JP2003200782A - Vehicle running status display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a vehicle traveling state display device that displays a warning to a vehicle behind when an emergency stop is performed. SOLUTION: When a control unit 101 recognizes that the vehicle has shifted from a high-speed running to a low-speed running and is in an emergency stop state, and a vehicle detecting unit 113 recognizes a warning display of a preceding vehicle, the control unit 101 performs the control. Is the hazard lamp 111
Flashing on the vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle running status display device which can be mounted on a moving body such as a vehicle and displays the running status of the moving body on a road. The present invention relates to a vehicle traveling status display device.

[0002]

2. Description of the Related Art Inadvertent frontal rear-end collisions are frequent accidents among automobile collisions. As one of the factors that causes a rear-end collision accident, the driver can respond to changes in the driving situation of the vehicle on the road, such as when the vehicle in front slows down by braking. There is a case of collision without hitting.

A specific example of the above requirement will be described below with reference to FIG.
It will be described using 0. FIG. 10 is an explanatory diagram showing a process of occurrence of a rear-end collision accident. In road traffic, traffic congestion may occur due to traffic restrictions due to traffic accidents or disasters, and disruption of vehicle intervals due to speed changes due to climbing slopes. In FIG. 10, vehicles 61 and 62 are in a traffic jam, and the vehicle 62 is a vehicle located at the end of the traffic (the tail vehicle in the figure).

When the vehicle 63 is approaching the vehicle 62 at high speed and it is delayed that the driver of the vehicle 63 becomes aware of the traffic jam, the driver delays the timing of applying the brake and collides with the vehicle 62. Further, when the vehicle 63 suddenly brakes, the vehicle following the vehicle 63 later collides with the vehicle 63 after noticing the stop of the vehicle 63, and the vehicle 63 collides with the vehicle 62 in the reaction of the rearward collision. As a result, a collision collision occurs.

Further, when the vehicle 62 presses the brake, the brake lamp is turned on and the intention of the vehicle 62 to stop can be notified to the vehicle 63. In spite of caution, the vehicle 62 may not react to the stop and may collide with the vehicle 62.

For this reason, conventionally, a driver of a vehicle in a traffic jam informs a succeeding vehicle that the vehicle will be stopped in an emergency such as a traffic jam, so that a hazard lamp of the vehicle is flashed before the vehicle stops to alert the driver. Was carried out to prevent the occurrence of a rear-end collision.

Further, as a display device for warning the following vehicle, Japanese Patent Laid-Open No. 2001-19 published on July 24, 2001.
No. 9260 “Vehicle distance control device, vehicle traveling status display device, vehicle speed control release device, and vehicle sudden braking warning device” (applicant: Matsushita Electric Industrial Co., Ltd., inventor: Akira Ishida). According to the present invention, when the lighting of the hazard lamp of the vehicle in front is detected, the inter-vehicle distance control device that changes the deceleration method according to the inter-vehicle distance at that time, the distance and the relative speed between the vehicle in front are measured, and the sudden braking is performed. There has been proposed a vehicle sudden braking warning device that lights or blinks a stop lamp or a hazard lamp when it is necessary to hang it up.

[0008]

However, in the related art, since the hazard lamp provided in the vehicle is to be manually blinked by the driver, the blinking operation is performed because the driver is distracted by other operations. There is a problem in that the driver may forget to do so or the start of blinking may be delayed, so that the following vehicles are not sufficiently alerted.

In FIG. 9, the vehicle 63 travels a braking distance proportional to the speed until the vehicle 63 traveling at high speed notices the last vehicle 62 in the traffic jam and suddenly brakes to stop. Therefore, the vehicle 62 needs to blink the hazard lamp in consideration of the braking distance until the vehicle 63 is suddenly braked and stopped. Especially on highways where the legal maximum speed of automobiles (including light automobiles) is 100 km / h, the timing of blinking the hazard lamps is very important, and a serious accident may occur depending on a mistake in the judgment. For this reason, in a traffic jam on a highway, the driver of the vehicle must pay close attention to the driving situation of the vehicle in front in order to avoid a rear-end collision with the vehicle at the end of the traffic jam. However, there was a problem that

In addition, a wireless base station, a relay device, or the like is installed in advance along a road so that VICS (Vehicle Information and
There is a system that avoids a rear-end collision accident by building a communication system (road traffic information system) to wirelessly transmit information about the preceding vehicle to the vehicle traveling on the road and call attention to the following vehicle. . However, it is uneconomical to install the system because it requires a huge amount of money and a vehicle needs a navigation system or the like to receive the information.

Further, in the inter-vehicle distance control device and the vehicle sudden braking warning device described in Japanese Patent Laid-Open No. 2001-199260, the hazard of the own vehicle with respect to the vehicle behind is based on the fact that the vehicle ahead is lighting the hazard lamp. It is not configured to turn on or blink the lamp, and it is not possible to blink the hazard lamp promptly in response to driving situations such as traffic jams.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle traveling status display device which can be mounted on a moving body such as a vehicle and which displays a warning to a succeeding vehicle when the moving body is in an emergency stop. And

[0013]

DISCLOSURE OF THE INVENTION The present invention for solving the above-mentioned problems of the prior art is, in a vehicle traveling status display device, mounted on a moving body and speed detecting means for detecting the speed of the moving body, The warning recognition means for recognizing the warning display of the vehicle in front of the moving body and the speed detection means detect a speed equal to or higher than the first specified value for a certain time or more, and the warning recognition means recognizes the warning means for the vehicle in front. Then, a warning display is provided to the vehicle behind, and after the warning is displayed, when the speed detection means detects a speed equal to or higher than the second specified value for a certain time or longer, the warning display is ended. Yes, a warning display can be reliably displayed at the rear during an emergency stop to prevent a rear-end collision accident.

Further, in the vehicle traveling status display device of the present invention, a speed detecting means mounted on a moving body for detecting the speed of the moving body, and a warning recognizing means for recognizing a warning display of a vehicle in front of the moving body, After the wireless communication means for transmitting and receiving a wireless signal including the information on the traveling condition of the moving body and the speed detection means detect a speed equal to or higher than the first specified value for a certain time or more,
When the speed below the second specified value is detected for a certain period of time,
A warning is displayed to the vehicle behind, and a wireless signal indicating that the moving body is decelerating and the warning is displayed is transmitted using the wireless communication means. When the speed is detected for a certain period of time or more, it has a control means for ending the warning display,
It is possible to prevent a rear-end collision accident by displaying a warning display and a warning notice immediately and surely at the time of an emergency stop.

Further, in the vehicle traveling status display device of the present invention, a speed detecting means mounted on a moving body for detecting the speed of the moving body, and a warning recognizing means for recognizing a warning display of a vehicle in front of the moving body, After the wireless communication means for transmitting and receiving a wireless signal including the information on the traveling condition of the moving body and the speed detection means detect a speed equal to or higher than the first specified value for a certain time or more,
When a speed equal to or lower than the second specified value is detected for a certain period of time or more and a wireless signal indicating that the wireless communication means is decelerating and a warning display is received from the vehicle in front, a warning display is made to the vehicle in the rear. A wireless signal indicating that the mobile body is decelerating and displaying a warning is transmitted using the wireless communication means, and after the warning is displayed, the speed detecting means detects a speed equal to or higher than the third specified value for a certain period of time or more. And, it has a control means for terminating the warning display, and at the time of an emergency stop, the warning display and the warning notification can be surely performed to the rear so that a rear-end collision accident can be prevented.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. A vehicle traveling status display device according to an embodiment of the present invention is mounted on a vehicle, and a state in which the speed of the vehicle is equal to or higher than a first prescribed value continues for a certain period of time or more, and a hazard lamp of a vehicle in front of the vehicle is displayed. When the blinking is detected, the hazard lamp is blinked to the vehicle behind after making a notification prompting the blinking of the hazard lamp, and after the hazard lamp blinks, the vehicle speed is the second specified value (first specified value> If the state of being equal to or more than the second prescribed value continues for a certain period of time or more, the flashing of the hazard lamp is stopped, whereby an easy and reliable warning is issued based on the speed of the own vehicle and the traveling condition of the vehicle ahead. The display can be done.

Further, the vehicle traveling status display device according to the embodiment of the present invention is mounted on a vehicle, and the state in which the speed of the vehicle is equal to or higher than the first specified value continues for a certain period of time or more. If the speed remains below the second specified value (the first specified value> the second specified value) for a certain period of time or more, the hazard lamp will be given to the vehicle behind after the warning of blinking the hazard lamp is issued. While blinking, sends a radio signal including information indicating that the hazard lamp is blinking and is decelerating to the vehicle behind, and after the hazard lamp blinks,
When the speed of the vehicle is equal to or higher than the third stipulated value (first stipulated value> third stipulated value) for a certain period of time or more, the blinking of the hazard lamp is stopped and the transmission of the wireless signal is stopped. Thus, it is possible to easily and surely perform the warning display based on the traveling condition of the own vehicle at the time of emergency stop.

Further, the vehicle traveling status display device according to the embodiment of the present invention is mounted on a vehicle, and the state in which the speed of the vehicle is equal to or higher than the first specified value continues for a certain period of time or more, and the vehicle ahead A wireless signal including information indicating that the hazard lamp is blinking and decelerating is received from the vehicle, and the vehicle speed is equal to or lower than a second specified value (first specified value> second specified value) If it continues for a certain period of time or more, a warning signal to blink the hazard lamp is issued and then the hazard lamp blinks to the vehicle behind and a wireless signal including information indicating that the hazard lamp is blinking and decelerating is transmitted to the rear. If the speed of the vehicle remains above the third specified value (first specified value> third specified value) for a certain period of time after the hazard lamp blinks, the hazard lamp will blink. Along with stopping It is intended to stop the transmission of the radio signal, which makes it possible to perform easily and reliably warning display based on the running condition of the vehicle and the front of the vehicle.

The speed detection means and the control means in the claims correspond to the control section in the figure, the warning recognition means corresponds to the vehicle detection section, and the wireless communication means corresponds to the wireless device.

First, a vehicle traveling status display device (first display device) according to a first embodiment of the present invention will be described with reference to the drawings. The first display device is mounted on a moving body such as a vehicle, detects the traveling state of the own vehicle and blinking of a hazard lamp of a vehicle ahead, and displays a warning, that is, blinks the hazard lamp based on the detection result. Is.

Next, the configuration of the vehicle traveling status display device according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a configuration block diagram of a vehicle traveling status display device and its peripheral devices according to a first embodiment of the present invention.

The first display device and peripheral devices are the control unit 1.
01, an acceleration sensor 102, a vehicle speed sensor 103,
Keyless unit control unit 104, ignition switch unit (ignition SW unit in the figure) 105, segment display unit 106, instrument panel switch 107, travel control unit 108, brake 109, throttle 11
0, hazard lamp 111, brake lamp 112
And a vehicle detection unit 113. Further, the instrument panel switch 107 is provided with a hazard switch (hazard SW in the figure) 107a. It should be noted that the first display device is realized by the warning display function in the control unit 101 and the vehicle detection unit 113 as a minimum configuration.

Next, each part of the first display device will be described. The control unit 101 controls each unit based on a signal input from each unit in the first display device. The specific operation of the warning display of the control unit 101 will be described later. The control unit 101 also plays the role of a control device in the vehicle, and controls the blinking and stopping of the hazard lamp 111 and the brake lamp 112 of the vehicle and signals from the keyless unit control unit 104 or the ignition switch unit 105. It controls the starting and stopping of the engine (not shown) of the vehicle, the vehicle detection unit 113, and the electronic circuit provided in the vehicle.

The acceleration sensor 102 detects a positive acceleration and a negative acceleration (deceleration) from a change in the vehicle speed and outputs the detection result to the control unit 101 as an acceleration data signal. As the acceleration sensor 102, for example, a capacitive semiconductor acceleration sensor or a silicon acceleration sensor is used, and the specification is such that acceleration is detected by extracting a capacitance change as a differential output, or a thermal resistance type acceleration sensor or the like is used. Then, the heating resistor may work, and the acceleration may be detected from the amount of change in the current displaced by the acceleration. The acceleration at the start of running the vehicle is, for example, 5.6 m / s ² when the initial speed is 0 m / s to 20 km / h in 2 seconds, and the vehicle is running at high speed. Therefore, the acceleration is about 6.0 m / s ² . In the first display device, the control unit 101 is 6.0 m
The specification is such that when an acceleration data signal of / s ² or more is input, it is recognized that the vehicle is traveling at high speed.

The vehicle speed sensor 103 detects the vehicle speed of the vehicle and outputs the detection result to the control unit 101 as a vehicle speed data signal. The vehicle speed sensor 103 is, for example, a means for detecting the vehicle speed from the output shaft of the engine, or a means for outputting a pulse signal according to the number of rotations of a member that rotates together with the drive wheels and the driven wheels of the vehicle. It is a means for detecting the vehicle speed of the vehicle based on the above.

The keyless unit controller 104 receives an electric wave signal from a distance, and the engine / vehicle detector 113.
And other electronic circuits provided in the vehicle are controlled by the control unit 10
It starts via 1 and controls the opening and closing of the door lock. The keyless unit control unit 104 uses the ID (identification ratio) transmitted from the remote key dedicated to the vehicle.
n) When the radio signal including the code is received, the control unit 101 outputs a signal for analyzing the ID code and controlling the engine start or door lock opening / closing according to the analysis result.
Output to.

The ignition switch unit 105 starts the engine / vehicle detection unit 103 via the control unit 101. Ignition switch unit 104
Outputs a signal to the control unit 101 to start the engine when an ignition key dedicated to the vehicle is pointed to and rotated to a specific position.

The segment display unit 106 includes a control unit 101.
Information about the vehicle is displayed to the driver based on the information signal output from the vehicle. Segment display section 10
In 6, the vehicle speed, engine speed, ABS (antilo
ck brake system) In addition to information indicating the vehicle status such as operation, warning information such as a hazard lamp warning prompting the driver to blink a hazard lamp, forgetting to close each door, and forgetting to pull the side brake is displayed.

The instrument panel switch 107 is provided with a switch for manually operating each instrument in the vehicle such as air conditioning. The instrument panel switch 107 is provided with a hazard switch 107a for manually blinking and turning off the hazard lamp 113.

The traveling control unit 108 detects the operating states of the brake 109 and the throttle 110 and outputs the detection result as a signal to the control unit 101. In the travel control unit 108, when the brake 109 is stepped on and a brake signal is output, a brake detection signal is output to the control unit 101. Further, the opening / closing degree of the valve in the throttle 110 is detected, and a throttle state signal corresponding to the opening / closing degree is output to the control unit 101.

The brake 109 has a brake pedal and a brake pedal switch (both not shown),
When the brake pedal is stepped on, the brake pedal switch is turned on to output a brake signal to the travel control unit 108.

The throttle 110 is interlocked with an accelerator pedal (not shown) of the vehicle. When the accelerator pedal is depressed, the valve is opened to increase the engine speed. Further, the opening / closing degree of the valve of the throttle 110 is monitored and detected by the traveling control unit 101.

The hazard lamps 111 are provided at the front and the rear of the vehicle, and blink when the hazard lamp blinking signal is input from the control unit 101 to mainly display a warning to the rear. The brake lamps 112 are provided in front of and behind the vehicle, and illuminate when a brake lamp lighting signal is input from the control unit 101 to inform the rear that the vehicle is decelerating or stopped.

The vehicle detection unit 113 is provided in front of the vehicle and detects the position of the vehicle located in front of the own vehicle and the presence / absence of blinking of the brake lamp and the hazard lamp of the vehicle. The signal is output to the control unit 101 as a signal. In the display device, the vehicle detection unit 11
In 3, a passive sensor, for example, is used to perform the above detection.

The passive sensor is characterized by recognizing a detection target without transmitting a signal such as light or radio wave, and is an active sensor which transmits a signal and recognizes the detection target based on the reflection result. Compared with the type sensor, it is not affected by the noise due to the reflected signal, and thus has the advantage that the detection target can be easily recognized without being influenced by external factors. In addition, since the vehicle detection unit 113 of the display device needs to be able to recognize the front situation in a wide range, a visible camera or an image sensor is used as a passive sensor, and pixel processing of image information is performed to detect the front situation. It has recognized.

FIG. 2 is a diagram showing a general view of the vehicle detection unit according to the embodiment of the present invention. In FIG. 2, the vehicle detection unit 113 includes an image processing unit 31 and a sensor 32. In addition, in the schematic view of FIG.
It is attached near the rearview mirror 33. In order to drive the vehicle safely, the windshield 34 is kept clean by the driver's wiping or wiper operation, so that the vehicle detection unit 113 can clearly recognize the front situation.

In FIG. 2, a visible camera or an image sensor which is a passive type sensor is used as the sensor 32.
The image information captured by the sensor 32 is output to the image processing unit 33, and the image processing unit 33 detects the position of the vehicle ahead and the presence or absence of blinking of the brake lamp and the hazard lamp based on the image information, A front situation signal including the detection result is output to the control unit 101 in FIG.

Next, the control operation of the warning display in the first display device will be described with reference to FIGS. FIG. 3 is a flowchart of a control operation of warning display on the first display device. The flowchart of FIG. 3 describes the operation of warning display when the vehicle travels on a highway.

First, when the ignition key is inserted into the ignition switch unit 105 of the first display device and rotated to a specific position, the ignition switch unit 105 is turned on (S11). When the ignition switch unit 105 is turned on, a signal indicating that the engine of the vehicle is started (engine start signal) is sent to the control unit 1.
01, and the control unit 101 causes a starter motor (not shown) to conduct to start the vehicle engine (S1).
2). The control unit 101 also starts the vehicle detection unit 103 when the engine start signal is output from the ignition switch unit 105 (S13).

The first display device may start the engine from the keyless unit controller 104.
Specifically, when the keyless unit control unit 104 receives the engine activation wireless signal transmitted from the remote key, the keyless unit control unit 104 outputs an engine start signal to the control unit 101, and the control unit 101 starts the engine and vehicle detection unit 113. .
After that, the vehicle detection unit 113 recognizes the situation in front of the vehicle by image processing and outputs it as a front situation signal to the control unit 101.

In FIG. 3, after the engine is started, the control unit 1
01 detects the acceleration data signal output from the acceleration sensor 102, the vehicle speed data signal output from the vehicle speed sensor 103, and the throttle state signal output from the travel control unit 108 (S14). Based on these signals, the control unit 101 determines the vehicle acceleration, the vehicle speed, and the throttle 11 respectively.
The open / close control state of the valve at 0 is detected to recognize the running state of the vehicle. That is, the control unit 101 determines whether the current speed of the vehicle is based on the vehicle speed data signal from the vehicle speed sensor 103, and whether the vehicle is accelerating based on the acceleration data signal from the acceleration sensor 102 and the throttle state signal from the travel control unit 108. Is detected, and the running state of the vehicle is recognized from these detection results.

The control unit 101 detects the signals in step S14 to detect the vehicle speed (vehicle speed) of 50 km / h.
When the above state is measured for 5 minutes (Yes in S15), the control unit 101 recognizes that the vehicle is traveling at high speed. Here, 50 km / h is the legally minimum speed on an expressway. Further, the control unit 101 includes the vehicle detection unit 1
From the front situation signal output from 13, the positions of the own vehicle and the vehicle in front are recognized (S16), and the vehicle in front is further recognized (S17). Specifically, the control unit 101 recognizes the positional relationship between the vehicle ahead and the own vehicle from the front situation signal,
In addition, the vehicle ahead in the same lane is recognized.

In step S15, the control unit 101 returns to step S14 if the vehicle speed is 50 km / h or less, or if the vehicle speed is 50 km / h or more but no measurement is performed for 5 minutes or more (No in step S15). Continue to recognize the running state of the vehicle.

When the vehicle ahead is recognized in the process S17, the control unit 101 detects whether or not the brake lamp of the vehicle ahead is lit and whether the hazard lamp is blinking or not by the front situation signal from the vehicle detection unit 113 (S18). ).
When the lighting of the brake lamp and the blinking of the hazard lamp are not detected in the process S18 (No in S18), the control unit 101 returns to the process S14 and recognizes the traveling state of the vehicle again.

When the lighting of the brake lamp or the blinking of the hazard lamp is detected in the process S18 (S18)
In the case of Yes), the control unit 101 subsequently determines whether or not the driver of the vehicle has manually turned on the hazard switch 107a of the instrument panel switch 107 (S1).
9). When the hazard switch 107a is turned on, the hazard switch 107a is electrically connected and an electric signal is input, and the control unit 101 determines the state of the hazard switch 107a based on the electric signal. When it is determined in step S19 that the hazard switch 107a is ON (Yes in S19), the control unit 101 blinks the hazard lamp 111 (S22).

When the control unit 101 determines in step S19 that the hazard switch 107a is in the OFF state (No in S19), the segment display unit 106 displays
A warning notice for prompting to turn on the hazard switch 107a is displayed (S20). Simultaneously with the start of the warning notification display, the control unit 101 activates a built-in timer (not shown) to measure the elapsed time from the warning notification display.

Hazard switch 1 is still activated after a specified time (2 seconds in consideration of high-speed running) has elapsed since the timer was started.
If 07a is not turned on, the control unit 101 outputs an instruction to the hazard switch 107a to automatically blink the hazard lamp 111 (S21) and blinks the hazard lamp 111 (S22). In step S22, the hazard lamp 111 blinks,
The vehicle can give a warning display to the following vehicle to notify that the vehicle ahead is performing an emergency stop.

Blinking process of the hazard lamp 111 (S2
Following 2), the control unit 101 determines whether or not the driver of the own vehicle has manually turned the hazard switch 107a off (S23). When it is determined in the process S23 that the hazard switch 107a is in the OFF state (Yes in S23), the control unit 101 stops blinking the hazard lamp 111 (S24) and ends the warning display.

When it is determined in step S23 that the hazard switch 107a is in the ON state (No in step S23), the control unit 101, similarly to step S14, the acceleration sensor 102, the vehicle speed sensor 103, and the traveling control unit 10.
Each signal output from 8 is detected to recognize the running state of the vehicle (S25).

The control unit 101 determines whether the vehicle speed is 20 km / h or more by detecting each signal in step S23.
When the measurement is performed for a second (Yes in S26), it is automatically decided to stop blinking the hazard lamp 111, and the blinking of the hazard lamp 111 is stopped (S24). Also, the process S
At 26, the vehicle speed is less than 20 km / h or 20 k
Even if m / h or more is not measured for 2 seconds or more (S2
In the case of No. 6), the control unit 101 returns to step S25,
Continue to recognize the running state of the vehicle.

In the first display device, the control unit 101 measures the speed of the vehicle, recognizes that the vehicle is traveling at high speed, and the vehicle in front turns on the brake lamp and blinks the hazard lamp. That is, when it is detected that the emergency stop is required, the control unit 101 notifies the driver of blinking the hazard lamp 111. After the notification, if the blinking does not occur within the specified time, the control unit 10
1 automatically blinks the hazard lamp 111.

By performing such control, the vehicle equipped with the first display device detects a state in which an emergency stop should be made immediately even during high-speed running, and the driver blinks the hazard lamp 111. Hazard lamp 111
Is blinked manually or automatically, so that it is possible to reliably display a warning to the vehicle behind and to prevent a rear-end collision accident at high speed.

In the first display device, after the hazard lamp 111 blinks, the control unit 101 continuously measures the vehicle speed of 20 km / h for a certain period of time in step S26, so that the vehicle is not in the emergency stop state. Recognizing that the normal traveling state has been entered, the hazard lamp 111 is automatically stopped from blinking. By performing such control, the hazard lamp 111 can be surely turned off when the vehicle shifts from the emergency stop state to the state in which the vehicle can normally run. Warning display can be prevented and traffic can be made smooth.

In the first display device, the criterion of the vehicle speed and the value of the measurement time in step S15 and step S26 may be changed manually or automatically according to the traffic environment and the like. For example, on an ordinary road, it is desirable that the vehicle speed in step S15 be lower than 50 km / h. Also,
The prescribed time until the hazard lamp 111 automatically blinks in step S21 is preferably determined in consideration of the vehicle speed and the inter-vehicle distance of the vehicle behind, and the time from the warning display until the vehicle behind can safely stop. .

Next, the running condition display device (second display device) according to the second embodiment of the present invention will be described focusing on the differences from the first display device. The second display device is mounted on a moving body such as a vehicle, detects the traveling state of the own vehicle, and displays a warning based on the detection result, that is, the hazard lamp blinks, and the own vehicle blinks the hazard lamp and decelerate. A wireless signal to the effect that it is in the middle is transmitted.

Further, when the second display device detects the running condition of the own vehicle and further receives the radio signal indicating that the hazard lamp is blinking and the vehicle is decelerating from the vehicle ahead, the second display device shows the detection result and the radio signal. Based on this, the hazard lamps are blinked, the hazard lights of the host vehicle are transmitted, and a radio signal indicating that the vehicle is decelerating is transmitted.

First, the configuration of the second display device will be described with reference to FIGS. 4 and 5. FIG. 4 is a configuration block diagram of the vehicle traveling status display device and its peripheral devices according to the second embodiment of the present invention, and FIG. 5 is a schematic view of the wireless device 114 in the second display device. Hereinafter, portions having the same configuration as the first display device will be described with the same reference numerals.

As shown in FIG. 4, the second display device is characterized in that a radio device 114 is added in addition to the structure of the first display device. It should be noted that the second display device is realized by the warning display function in the control unit 101 ′, the vehicle detection unit 113, and the wireless device 114 as a minimum configuration.

Under the control of the control unit 101 ', the wireless device 114 has information indicating that the hazard lamp 111 is blinking (hazard lamp blinking information) and information indicating that the brake lamp 112 is on ( Brake lamp lighting information) wireless signal is transmitted. The wireless device 114 also
When the wireless signal of the hazard lamp blinking information of the vehicle ahead and the brake lamp lighting information transmitted from the vehicle ahead is received, it is output to the control unit 101 '.

The control unit 101 'controls each unit having the same structure as the first display device and also controls the wireless device 114. The specific operation of the control unit 101 'for displaying a warning will be described later. The other parts of the second display device have the same structure as the corresponding parts of the first display device, and therefore the description thereof is omitted.

In FIG. 5, the wireless device 43 is attached to the side mirror 42 of the vehicle 41. During communication of the wireless signal, the wireless signal may be reflected by the vehicle 41 itself as an obstacle. Therefore, the wireless device 43 can be accurately transmitted to the rear without being reflected by the wireless device 43 by being attached to the side mirror 42 portion protruding from the vehicle 41 itself, and can reliably receive the wireless signal transmitted from the front. .

Next, the control operation of the warning display in the second display device will be described with reference to the drawings. The second display device performs the warning display by two kinds of methods, that is, a warning display based on the traveling state of the own vehicle and a warning display based on the traveling state of the own vehicle and reception of a radio signal. The operation control of the warning display will be described below for each type. FIG. 6 is a flowchart of a control operation of a warning display based on the traveling state of the own vehicle in the vehicle traveling status display device according to the second embodiment of the present invention. The flowchart of FIG. 6 describes the operation of warning display when the vehicle travels on a highway.

First, when the ignition key is inserted into the ignition switch unit 105 of the first display device and rotated to a specific position, the ignition switch unit 105 is turned on (S31). When the ignition switch unit 105 is turned on, it outputs an engine start signal to the control unit 101 ', and the control unit 101' conducts a starter motor (not shown) to start the engine of the vehicle (S32). The control unit 101 'also starts the wireless device 114 when the engine start signal is output from the ignition switch unit 105 (S33). Further, the second display device may start the engine from the keyless unit control unit 104, like the first display device. The specific operation is the same as that of the first display device, and thus the description thereof is omitted.

After the engine is started, the control unit 101 'detects the acceleration data signal output from the acceleration sensor 102, the vehicle speed data signal output from the vehicle speed sensor 103, and the throttle state signal output from the travel control unit 108 (S34). ). The control unit 101 ′ recognizes the vehicle running state by detecting the vehicle acceleration, the vehicle speed, and the valve open / close control state in the throttle 110 from these signals, respectively.

The control unit 101 'measures the state in which the vehicle speed is 50 km / h or more for 5 minutes by detecting each signal in the process S34 (in the case of Yes in S35), and thereafter, determines the state in which the vehicle speed is 10 km or less by 2 If you measure for a second (S
36 (Yes), the vehicle recognizes that it is in a state of emergency stop due to a transition from high speed to low speed. Further, the control unit 101 'determines whether or not the driver of the own vehicle manually turns on the hazard switch 107a of the instrument panel switch 107 (S37).

The control unit 101 ', in process S35,
When the vehicle speed is 50 km / h or lower, or is 50 km / h or higher but is not measured for 5 minutes or longer (No in S35), the process returns to step S34, and the running state of the vehicle is continuously recognized. Similarly, when the vehicle speed is 10 km / h or higher, or 10 km / h or lower, the control unit 101 'does not measure the vehicle speed for 2 seconds or longer (No in S36).
In the case of), the process returns to step S34, and the running state of the vehicle is continuously recognized.

The control unit 101 ', in the process S37,
When it is determined that the hazard switch 107a is ON (Yes in S37), the hazard lamp 111 is blinked (S40). When it is determined in step S37 that the hazard switch 107a is in the OFF state (No in S37), the control unit 101 'notifies the segment display unit 106 of a warning notification that the segment switch unit 106 prompts the hazard switch 107a to be turned ON. Display is performed (S38). Simultaneously with the start of the warning notification display, the control unit 101 'activates a built-in timer (not shown) to measure the elapsed time from the warning notification display.

Hazard switch 1 is still activated even after a specified time (2 seconds in consideration of high-speed running) has elapsed since the timer was started.
If 07a is not turned on, the control unit 101 'outputs an instruction to the hazard switch 107a to automatically blink the hazard lamp 111 (S39) and blinks the hazard lamp 111 (S40).

Further, the control unit 101 'includes the wireless device 114
And outputs a wireless signal transmission command to the wireless device 114.
Is the hazard lamp 11
If 1 is blinking, the hazard lamp blinking information is wirelessly transmitted, and if the brake 109 of the vehicle is stepped on and the brake lamp 112 is lit, the brake lamp lighting information is wirelessly transmitted (S41). Here, the brake lamp lighting information indicates that the vehicle is decelerating. The second display device performs the process S4.
Flashing of hazard lamp 111 at 0 and processing S41
By transmitting the wireless signal in (2), it is possible to display two types of warning displays for the following vehicle and to reliably notify the situation in which the own vehicle is performing an emergency stop.

In FIG. 6, following the blinking process of the hazard lamp 111, the control unit 101 'determines whether or not the driver of the vehicle has manually turned the hazard switch 107a off (S42). When it is determined in the process S42 that the hazard switch 107a is in the OFF state (Yes in S42), the control unit 101 '.
Stops blinking the hazard lamp 111 (S43) and ends the warning display. In addition, the control unit 101 ′ performs processing S43.
At, the wireless device 114 outputs a wireless signal transmission stop command, and the wireless device 114 stops transmitting the wireless signal.

When it is determined in step S42 that the hazard switch 107a is ON (No in step S42), the control unit 101 'performs the same process as step S14 to recognize the running state of the vehicle. (S44).

The control unit 101 'recognizes that the vehicle is in the normal running state when the vehicle speed of 20 km / h or more is measured for 2 seconds by the detection of each signal in the process S44 (Yes in S45). , It is automatically decided to stop the blinking of the hazard lamp 111,
Stops blinking (S43). In step S45, if the vehicle speed is 20 km / h or less, or if it is not measured for 2 seconds or more even if the vehicle speed is 20 km / h or more (No in S45), the control unit 101 ′ returns to step S44, and the vehicle continues to operate. To recognize the running condition.

In the control operation of FIG. 6, the control unit 101 '
Measures the speed of the vehicle, and if the driver recognizes that the vehicle is moving from high speed to low speed and is in an emergency stop state, the driver is informed that the hazard lamp 111 should blink. After the notification, if the blinking does not occur within the specified time, the control unit 101 'automatically sets the hazard lamp 111
Blink. Further, the control unit 101 ′ causes the wireless device 114 to transmit a wireless signal after the hazard lamp 111 blinks.

By performing such control, the vehicle equipped with the second display device can reliably display a warning message on the vehicle behind the vehicle even when an emergency stop situation occurs immediately in front of the vehicle. It is also possible to give a warning notification and prevent a rear-end collision accident at high speed. Particularly, in the second display device, a warning display is provided by blinking the hazard lamp 111 of the own vehicle and transmitting a wireless signal to the rear side, so that even if blinking of the hazard lamp 111 cannot be confirmed due to weather conditions during traveling, the wireless Since the warning can be notified by the signal, the emergency stop warning can be reliably notified to the vehicle that can receive and recognize the wireless signal.

7 and 8 are flowcharts of the control operation of the warning display based on the traveling state of the own vehicle and the reception of the radio signal in the vehicle traveling state display device according to the second embodiment of the present invention. It should be noted that FIGS. 7 and 8 are continuous flowcharts, and the operation of warning display when the vehicle travels on a highway is described. In the description of FIG. 7 and FIG. 8, it is assumed that the front and front vehicles are equipped with the second display device.

In FIG. 7, steps S51 to S54.
The control operation up to the steps S31 to S in FIG.
Since it is the same as the control operation in 34, description thereof will be omitted. The control unit 101 'recognizes that the vehicle is traveling at a high speed when the vehicle speed of 50 km / h or more is measured for 5 minutes by the detection of each signal in the process S54 (Yes in S55). Next, the control unit 101 ′ controls the wireless device 1
It is detected whether or not the wireless signal of the brake lamp lighting information has been received from the vehicle ahead of 14 (S56).

In process S56, when the control unit 101 'does not detect the reception of the wireless signal of the brake lamp lighting information (No in S56), the process proceeds to process S54, and the traveling state of the vehicle is recognized again. When the reception of the wireless signal of the brake lamp lighting information is detected (Yes in S56)
s), the control unit 101 ′ further determines that the wireless device 114
In step S57, it is detected whether or not a wireless signal of hazard lamp blinking information has been received from the vehicle ahead.

In step S57, when the control unit 101 'does not detect the reception of the radio signal of the hazard lamp blinking information (No in S57), it is assumed that the vehicle ahead does not blink the hazard lamp yet. For this reason, the control unit 101 'causes the wireless device 114 to wirelessly transmit a request signal to the front vehicle to further transmit the hazard lamp blinking information of the vehicle in front (front of the own vehicle). S58). In process S58, the vehicle in front, when receiving the request signal, wirelessly transmits the hazard lamp blinking information received from the vehicle in front to the own vehicle. In process S57, the control unit 101 'detects the hazard lamp blinking information of the vehicle ahead of the vehicle received from the vehicle ahead as the hazard lamp blinking information of the vehicle ahead.

In process S57, when the control unit 101 'detects the reception of the radio signal of the hazard lamp blinking information (Yes in S57), it performs the same process as process S54 to recognize the running state of the vehicle (S59). ).

When the control section 101 'measures the state where the vehicle speed is 30 km / h or less for 2 seconds by detecting each signal in the processing S59 (in the case of Yes in S60), the vehicle shifts to the low speed traveling and the emergency stop is performed. Recognize a situation. Then, the control unit 101 ′ causes the segment display unit 106 to display a warning notice for urging the hazard switch 107a to be turned on (S61). Simultaneously with the start of the warning notification display, the control unit 101 'activates a built-in timer to measure the elapsed time from the warning notification display. Further, in processing S60, the vehicle speed is 20 km / h.
Above, or if it is not measured for 2 seconds or more even if it is 20 km / h or less (No in S60), the control unit 101 ′
Returns to step S59 and continues to recognize the running state of the vehicle.

Hazard switch 1 is still activated after the lapse of a prescribed time (2 seconds in consideration of high-speed running) from the start of the timer.
If 07a is not turned on, the control unit 101 'outputs an instruction to the hazard switch 107a to automatically blink the hazard lamp 111 (S62) and blinks the hazard lamp 111 (S63).

Further, the control unit 101 'has the wireless device 114
And outputs a wireless signal transmission command to the wireless device 114.
Wirelessly transmits the hazard lamp blinking information and the brake lamp lighting information to the vehicle behind (S64).

Following the blinking of the hazard lamp 111, the control unit 101 'controls the stop of blinking of the hazard lamp and the stop of the transmission of the radio signal from steps S65 to S68. These operations are performed from step S42 of FIG. The description is omitted because it is the same as S45.

In the control operation of FIGS. 7 and 8, the control unit 101 'measures the speed of the vehicle, recognizes that the vehicle is moving from high speed to low speed, and is in an emergency stop,
When the wireless signal of the brake lamp lighting information and the hazard lamp blinking information is received from the vehicle ahead, the driver is notified that the hazard lamp 111 blinks. After notification
If the hazard lamp 111 does not blink within the specified time, the control unit 101 'automatically blinks the hazard lamp 111. Further, the control unit 101 ′ causes the wireless device 114 to transmit a wireless signal after the hazard lamp 111 blinks.

By performing such control, the vehicle equipped with the second display device can surely display the warning display on the vehicle behind the vehicle based on the driving conditions of the vehicle and the vehicle ahead. , It is possible to prevent a rear-end collision at high speed. In particular, in the second display device, the warning is issued by blinking the hazard lamp 111 and transmitting a wireless signal, so that the warning can be detected by the wireless signal even when the blinking of the hazard lamp 111 cannot be confirmed due to weather conditions during traveling. It is possible to reliably detect an emergency stop warning and give a warning to the rear regardless of the traveling environment.

FIG. 9 is an explanatory view showing the traffic condition of the vehicle when the second display device is used. In FIG. 9, both vehicles 51 and 52 are equipped with a second display device. By using the second display device, the vehicle 52
Can detect the traveling state of the vehicle in front by the radio signal transmitted from the vehicle 51, and based on the detection result and the traveling state of the vehicle 52, the hazard lamp can be blinked for the vehicle behind with a margin. Therefore, even in the case of an emergency stop due to traffic congestion or the like, it is possible to prevent a rear-end collision accident due to high-speed traveling.

Similarly to the first display device, the second display device may manually or automatically change the vehicle speed determination criterion and the measurement time value according to the traffic environment or the like. Further, it is desirable that the prescribed time until the hazard lamp 111 is automatically blinked is determined in consideration of the vehicle speed and the inter-vehicle distance of the vehicle behind, and the time from when the warning is displayed until the vehicle behind can be safely stopped.

In the second display device, the vehicle detection unit 113 and the wireless device 114 may be arbitrarily or automatically switched and used as means for detecting the traveling condition of the vehicle ahead. For example, when the weather is good, it is optimal to detect the traveling condition by using the vehicle detection unit 113, and when the weather is bad and the blinking of the hazard lamp cannot be confirmed, the wireless device 114 is used.

Further, in the second display device, information other than the hazard lamp blinking information and the brake lamp lighting information may be transmitted as the wireless signal. For example, the state of the vehicle in front (during wiper operation, low speed operation, etc.) can be grasped to grasp the traffic situation in front. In addition, by transmitting the traveling direction and traveling lane of the vehicle as information, and confirming this information when receiving it, radio signals from vehicles traveling in the opposite lane or other lanes can be eliminated, and the same lane can be eliminated. It is possible to accurately detect a radio signal from a vehicle traveling on the road.

Further, in the second display device, a matrix LED (Light Emitting Diode) or the like may be used to display the warning in the rear of the message. By displaying a warning with a message, it is possible to display a warning of character information, and it is possible to inform the vehicle behind in an easy-to-understand manner. The message warning display means may be provided in the vehicle by using car navigation or the like. For example, the character information of the failure condition is wirelessly transmitted from the vehicle in front, and the driver of the vehicle behind can check the failure condition in the warning display means in the vehicle, thereby urgently recognizing the vehicle in front. Therefore, it is possible for the following vehicles to pass through smoothly.

According to the vehicle traveling status display device of the embodiment of the present invention, the host vehicle moves from high speed to low speed,
When it is recognized that it is in an emergency stop situation and the warning display of the vehicle in front is detected, the warning display is displayed for the vehicle behind and when it is recognized that the own vehicle has shifted to normal driving, the warning display is terminated. By doing so, it is possible to reliably display a warning on the vehicle behind when an emergency stop occurs, and it is possible to prevent a rear-end collision accident at high speed.

Further, according to the vehicle traveling status display device of the embodiment of the present invention, when it is recognized that the host vehicle is shifting from high speed to low speed and is in an emergency stop, the vehicle behind is recognized. The warning signal is displayed, the wireless signal indicating that the vehicle is decelerating and the warning display is transmitted, and when it is recognized that the vehicle has moved to normal driving, the warning display and the transmission of the wireless signal are terminated. Even if an emergency stop occurs, the warning display and the warning notification can be promptly and reliably given to the vehicle behind, and there is an effect that a rear-end collision accident at high speed can be prevented.

Further, according to the vehicle running condition display device of the embodiment of the present invention, it is recognized that the host vehicle is shifting from high speed to low speed and is in an emergency stop, and the vehicle ahead decelerates. When it receives a wireless signal indicating that it is displaying a warning, it displays a warning to the vehicle behind it, sends a wireless signal indicating that it is decelerating and displays a warning, and the vehicle has moved to normal driving. When it is recognized, the warning display and the transmission of the wireless signal are terminated, so that the warning display and the warning notification can be surely given to the vehicle behind when an emergency stop occurs, and a rear-end collision accident at high speed can be expected. There is an effect that can be prevented.

[0094]

According to the present invention, a speed detecting means mounted on a moving body for detecting the speed of the moving body, a warning recognizing means for recognizing a warning display of a vehicle in front of the moving body, and a speed detecting means. When a speed equal to or higher than the first prescribed value is detected for a certain period of time and the warning means of the vehicle in front is recognized by the warning recognition means, a warning display is displayed for the vehicle behind and the speed detection means is displayed after the warning is displayed. In the vehicle traveling status display device having a control means for terminating the warning display when a speed equal to or higher than the second prescribed value is detected for a certain time or longer, the warning display is surely displayed in the rear at the time of emergency stop, It has the effect of preventing a rear-end collision accident.

Further, according to the present invention, when mounted on a moving body,
A speed detecting means for detecting the speed of the moving body, a warning recognizing means for recognizing a warning display of a vehicle in front of the moving body, a wireless communication means for transmitting and receiving a wireless signal including information on the traveling state of the moving body, and a speed When the detection means detects a speed equal to or higher than the first specified value for a certain period of time and then detects a speed equal to or lower than the second specified value for a certain amount of time, a warning display is given to a vehicle behind and the wireless communication means When a speed detection means detects a speed equal to or higher than a third specified value for a certain period of time or more after the warning is displayed, the mobile terminal decelerates using the With the vehicle traveling status display device having the control means for terminating the above, there is an effect that a warning display and a warning notification can be promptly and surely provided to the rear at the time of an emergency stop, and a rear-end collision accident can be prevented.

Further, according to the present invention, when mounted on a moving body,
Speed detection means for detecting the speed of the moving body, warning recognition means for recognizing the warning display of the vehicle in front of the moving body, wireless communication means for transmitting and receiving a wireless signal containing information on the traveling state of the moving body, speed After the detection means detects a speed equal to or higher than the first specified value for a fixed time or longer, a speed equal to or lower than the second specified value is detected for a fixed time or more, and the wireless communication means decelerates to display a warning. When a wireless signal of is received from the vehicle in front, a warning is displayed for the vehicle behind and a wireless signal indicating that the moving body is decelerating and the warning is displayed is transmitted using the wireless communication means, and after the warning is displayed. When the speed detection unit detects a speed equal to or higher than the third specified value for a certain period of time or more for a certain period of time, the vehicle traveling status display device has a control unit that terminates the warning display. Perform shows and warning notification, there is an effect that can prevent rear-end collisions.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a vehicle traveling status display device and its peripheral devices according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a general view of a vehicle detection unit 113 according to the embodiment of the present invention.

FIG. 3 is a flowchart of a warning display control operation in the vehicle traveling status display device according to the first embodiment of the present invention.

FIG. 4 is a configuration block diagram of a vehicle traveling status display device and its peripheral devices according to a second embodiment of the present invention.

FIG. 5 is a schematic view of a wireless device 114 in a vehicle traveling status display device according to a second embodiment of the present invention.

FIG. 6 is a flowchart diagram of a control operation of a warning display based on the traveling state of the own vehicle in the vehicle traveling state display device according to the second embodiment of the present invention.

FIG. 7 is a flowchart of a control operation of a warning display based on the traveling state of the own vehicle and reception of a radio signal in the vehicle traveling status display device according to the second embodiment of the present invention.

FIG. 8 is a flowchart of a control operation of a warning display based on the traveling state of the own vehicle and reception of a radio signal in the vehicle traveling status display device according to the second embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a traffic situation of a vehicle when the vehicle traveling situation display device according to the second embodiment of the present invention is used.

FIG. 10 is an explanatory diagram showing a process of occurrence of a rear-end collision accident.

[Explanation of symbols]

31 ... Image processing unit, 32 ... Sensor, 33 ... Room mirror, 34 ... Windshield, 41 ... Car body, 42
... side mirrors, 43,114 ... wireless devices, 101,
101 '... Control unit, 102 ... Acceleration sensor, 103
... vehicle speed sensor, 104 ... keyless unit control unit, 1
05 ... Ignition switch section, 106 ... Segment display section, 107 ... Instrument panel switch, 108 ... Travel control section, 109 ... Brake, 110 ... Throttle,
111 ... Hazard lamp, 112 ... Brake lamp,
113 ... Vehicle detection unit

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B60R 21/00 628 B60R 21/00 628B 630 630G G08G 1/16 G08G 1/16

Claims (3)

[Claims] 1. A speed detecting means mounted on a mobile body for detecting the speed of the mobile body, a warning recognizing means for recognizing a warning display of a vehicle in front of the mobile body, and a first speed detecting means in the speed detecting means. When a speed equal to or higher than a specified value is detected for a certain period of time or more, and when the warning recognizing means recognizes the warning means of the vehicle in front, the warning display is performed for the vehicle behind, and after the warning is displayed, 2. A vehicle traveling condition display device, comprising: a control unit that terminates the warning display when a speed equal to or higher than a specified value of 2 is detected for a certain time or more. 2. A speed detection means mounted on a mobile body for detecting the speed of the mobile body, a warning recognition means for recognizing a warning display of a vehicle in front of the mobile body, and information on a traveling state of the mobile body. And a wireless communication unit that transmits and receives a wireless signal including a signal, and the speed detection unit detects a speed equal to or higher than a first specified value for a predetermined time or more, and then detects a speed equal to or lower than a second specified value for a predetermined time or more. A warning signal is displayed to the vehicle behind, and a wireless signal indicating that the moving body is decelerating and the warning is displayed using the wireless communication means is transmitted. The vehicle running condition display device further comprising control means for terminating the warning display when a speed equal to or higher than the prescribed value is detected for a predetermined time or longer. 3. A speed detecting means mounted on a mobile body for detecting the speed of the mobile body, a warning recognizing means for recognizing a warning display of a vehicle in front of the mobile body, and information on a traveling state of the mobile body. A wireless communication means for transmitting and receiving a wireless signal including, and a speed not less than a first specified value is detected for a certain period of time or more in the speed detection part, and then a speed not more than a second specified value is detected for a certain period of time or more, Moreover, when a wireless signal indicating that the wireless communication means is decelerating and displaying a warning is received from a vehicle in front, a warning display is made to a vehicle in the rear, and the moving body is decelerated by using the wireless communication means. There is a control means for transmitting a radio signal indicating that the warning display is being performed, and after the warning display, if the speed detection means detects a speed equal to or higher than a third prescribed value for a certain time or more, the warning display is ended. Special A vehicle traveling status display device.