JPH09180088A - Surrounding monitoring device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a signal image on one display while switching images at optimum timing by displaying the image photographed by a surrounding monitoring device on the display when a recognition signal is outputted corresponding to brake operations performed plural times in a prescribed time. SOLUTION: When a driver performs a specified brake operation at a speed lower than a prescribed speed, that operation is recognized by a brake operation recognizing device 5 so that the image of a surrounding monitoring device 1 can be displayed on a display 7. A certain pattern such as performing the brake operation plural times in a prescribed time, for example, is set to this specified driving operation and when the driver performs the brake operation plural times in this prescribed time, the brake operation recognizing device 5 outputs the recognition signal. When the recognize signal is outputted, the video signal of the surrounding monitoring device 1 is outputted to the display 7 by a selecting circuit 6, and the image photographed by the surrounding monitoring device 1 is displayed on the display 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a display for switching between a video signal captured by a surrounding monitor device for capturing a video image of the surroundings of a vehicle and a video signal output from a navigation device, a television receiver, a video device or the like. The present invention relates to a vehicle surrounding monitor device for outputting.

[0002]

2. Description of the Related Art A conventional vehicle surrounding monitor includes, for example,
There is JP-A-60-118782 shown in FIG.
This device is a device that outputs an image captured by a camera to a monitor when the speed becomes lower than a predetermined speed. In addition, the vehicle surroundings monitor device shown in FIG.
Japanese Patent Application Laid-Open No. 157642) is a device that divides and displays an image captured by a plurality of television cameras on one display unit.

[0003]

However, in such a conventional vehicle surroundings monitor device, when the display is shared by the surroundings monitor device and the navigation device, a predetermined condition is satisfied. If the driver wants to see the image of the navigation device, the above function needs to be stopped because the image is switched to the image of the surrounding monitor device when the vehicle is traveling at a low speed, such as when starting or in a traffic jam. There was a problem that there was.

Further, in an apparatus for synthesizing one video from images from a plurality of cameras, there is a limit to the screen size of a display that can be mounted on a vehicle, and the synthesized video of each camera becomes small, so that an obstacle or the like can be recognized. There was a problem that it would be difficult.

The present invention has been made in view of such a conventional problem, and detects a driving operation by a driver to switch between a video signal of a surrounding monitor device and a video signal of a navigation device to detect the surroundings. By displaying the video signal of the monitor device on the display, the driver does not need to operate a special switch, and the video can be switched at a more suitable timing to display a single video on one display. Has an aim.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a surrounding monitor device for photographing a video image around a vehicle, a device for outputting another video signal, and an on-vehicle device operated by a driver. A sensor that detects an operation state, an operation pattern recognition device that recognizes that a signal from the sensor is performed in a predetermined pattern, and outputs a recognition signal; and, when the recognition signal is output, the other The selection circuit outputs the video signal of the surrounding monitor device from the video signal of the device that outputs the video signal.

[0007]

According to the present invention, it is not necessary to operate a specific switch for switching to a camera image, it is possible to prevent an increase in switches due to an increase in on-vehicle equipment, and an image of a surrounding monitor device is displayed in a traffic jam. Can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a diagram showing a first embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a front side monitor device, which takes an image of an obstacle in a blind spot around a vehicle caused by a wall as shown in FIG. 2 and provides the image to a driver. It is a device. Reference numeral 2 is a video signal generating device, and for example, a device for outputting a video signal such as a navigation device, a television broadcast receiving device, a video reproducing device can be used. 3 is a vehicle speed sensor, and for example, a sensor that outputs a pulse according to the movement of the wheels can be used. Reference numeral 4 denotes a brake operation detection switch, which is a switch for detecting that the driver has performed a brake operation. Reference numeral 5 denotes a brake operation recognition device, which detects whether or not the driver's brake operation has performed a predetermined operation, and outputs a recognition signal.
It can be configured using a microcomputer or the like. Reference numeral 6 denotes a selection circuit, which switches a video signal output by the camera according to a camera video switching signal and a signal with the navigation device. The selection circuit uses a semiconductor such as a relay circuit or a diode as shown in FIG. Can be composed of The monitor 7 is a display, and is a device that displays a video signal using a CRT or LCD.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG.

When the driver performs a specific brake operation at a speed equal to or lower than a predetermined speed, the brake operation recognition device recognizes the operation to display the image of the surrounding monitor device on the display. For this specific driving operation, for example, a pattern is set in which a braking operation is performed a plurality of times during a predetermined time, and when the driver performs a plurality of braking operations during the predetermined time, the brake operation recognition device outputs a recognition signal. . When the recognition signal is output, the selection circuit outputs the image signal of the surrounding monitor device to the display, and the image captured by the surrounding monitor device is displayed on the display.

If the vehicle is going through a crossroad without a traffic light, the driver decelerates before the intersection and slightly advances the vehicle to check the safety. In such a situation, the driver operates the brakes in a short period of time to move the vehicle at a slow speed, and at that time, the image of the surrounding monitor device is displayed on the display to assist the driver's safety confirmation. it can.

Further, since the image of the surrounding monitor device can be displayed on the display by the brake operation,
It is not necessary to operate a specific switch, and the displayed content can be changed to the image of the surrounding monitor device without being distracted by the operation.

Further, since the image of the surrounding monitor device can be displayed by the driver performing the brake operation a plurality of times in a short time, even if the above situation is not satisfied,
The driver can freely change the display contents.

[Second Embodiment] FIG. 5 is a view showing a second embodiment of the present invention.

In FIG. 5, 8 is a rear monitor device,
For example, it is a device as shown in FIG. 6, which captures an image including a blind spot behind the vehicle with a video camera and presents it to the driver. 2 is a video signal generator, for example,
A device that outputs a video signal such as a navigation device, a television broadcast receiving device, or a video reproducing device can be used. 3 is a vehicle speed sensor, and for example, a sensor that outputs a pulse according to the movement of the wheels can be used. A traveling direction detection sensor 9 detects whether the vehicle is moving forward or backward by detecting the gear position using a position sensor, for example. Reference numeral 10 denotes a rear monitor selection determination device, which can be configured using a microcomputer or the like. Reference numeral 6 denotes a selection circuit, which switches a video signal output by the camera according to a camera video switching signal and a signal with the navigation device,
A selection circuit using a semiconductor such as a relay circuit or a diode as shown in FIG. 3 can be used. The monitor 7 is a display, and is a device that displays a video signal using a CRT or LCD.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG.

The traveling direction detection sensor detects whether the vehicle is moving forward or backward. When the traveling direction changes from forward to backward, the image of the rear monitor device is output to the display. When the traveling direction is changed to forward, and if the vehicle speed measured by the vehicle speed sensor is less than or equal to a predetermined value, the display on the display is held in the image on the rear monitor device. If the vehicle speed is equal to or higher than the predetermined value, the display is returned from the rear monitor device to the image of the device immediately before the traveling direction is changed from forward to backward.

When moving forward and backward repeatedly at a low speed, such as during parking, the image of the rear monitor device is constantly displayed on the display, and the state behind the vehicle is monitored by the driver during the driving operation for parking. be able to.

Furthermore, when the vehicle speed increases from the parking lot to the road, the image of the original device is displayed again, so that the driver does not need to select the image.

[Third Embodiment] FIG. 8 is a diagram showing a third embodiment of the present invention.

In FIG. 8, reference numeral 1 denotes a front side monitor device, which takes an image of an obstacle in a blind spot around the vehicle caused by a wall as shown in FIG. 2 and provides the image to the driver. It is a device. Reference numeral 2 is a video signal generating device, and for example, a device for outputting a video signal such as a navigation device, a television broadcast receiving device, a video reproducing device can be used. 3 is a vehicle speed sensor, and for example, a sensor that outputs a pulse according to the movement of the wheels can be used. Reference numeral 11 denotes a rudder angle sensor, which uses, for example, a rotary encoder to detect the rotation angle of the column shaft. Reference numeral 12 denotes a surrounding monitor selection determining device, which can be configured by using a microcomputer or the like. Reference numeral 6 is a selection circuit, which switches a video signal output by the camera according to a camera video switching signal and a signal with the navigation device, and is composed of a selection circuit using a semiconductor such as a relay circuit or a diode as shown in FIG. can do. The monitor 7 is a display, and is a device that displays a video signal using a CRT or LCD.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG.

The rudder angle sensor measures the rudder angle, and the rate of change of the rudder angle is integrated. The traveling speed is calculated by integrating the vehicle speed measured by the vehicle speed sensor. The steering angle rate = integrated value of the steering angle change rate / distance traveled is calculated every predetermined time. When the steering angle ratio becomes larger than a predetermined value, the image on the display is switched to the image on the surrounding monitor device. If the vehicle travels on a narrow road, more steering is performed than on a highway. Therefore, while traveling on the highway, even if there is congestion, the image of the image device other than the surrounding monitor device is displayed, and while traveling on the bottleneck,
Since the image of the surrounding monitor device is displayed on the display, the driver can view the image of the surrounding monitor device without the need to operate the switch.

[Fourth Embodiment] FIG. 10 shows a fourth embodiment of the present invention.
FIG. In FIG. 10, reference numeral 1 denotes a front monitor device, for example, a device that uses a video camera to shoot an image of an obstacle in a blind spot in front of the vehicle and provide the image to the driver. Reference numeral 8 denotes a rear monitor device, which is, for example, a device that captures an image of an obstacle in a blind spot behind the vehicle using a video camera and provides the image to the driver. Reference numeral 2 is a video signal generating device, and for example, a device for outputting a video signal such as a navigation device, a television broadcast receiving device, a video reproducing device can be used. An ignition switch 14 is a switch operated by the driver to start the engine.
Reference numeral 15 is an ignition switch on determination device, which can be configured using a microcomputer or the like. Reference numeral 6 is a selection circuit, which switches a video signal output by the camera according to a camera video switching signal and a signal with the navigation device, and is composed of a selection circuit using a semiconductor such as a relay circuit or a diode as shown in FIG. can do. 7 monitor is a display, CR
It is a device that displays a video signal using a T, an LCD, or the like.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG.

In FIG. 11, whether or not the ignition switch is turned on is read by the ignition switch on discrimination device. When the ignition switch is turned on, power is supplied to the front and rear monitor devices and the display. After that, a signal is output from the ignition switch on determination device to the selection circuit so that the image of the front monitor device is displayed on the display for a predetermined time, and the image of the front monitor device is displayed on the display.

Next, the image of the rear monitor device is displayed on the display for a predetermined time.

When the power is turned on, the driver can confirm the operating state of the camera such as dirt on the lens surface and the line-of-sight direction of the camera before traveling.

[0031]

As described above, according to the present invention, when switching the video signal of the surrounding monitor device and the video signal of the navigation device or the like, the driving operation by the driver is detected and the video signal of the surrounding monitor device is detected. Is configured to be displayed on the display. 1. It is not necessary to operate a specific switch to switch to the camera image. To prevent the increase of switches due to the increase of in-vehicle devices, 3. When the image of the surrounding monitor device is needed when parking or passing through a narrow road, the image can be appropriately output, and the output of the image of the surrounding monitor device can be reduced when traffic is congested. 4 Since the image to be displayed on one display can be switched at any time, it is possible to display the image without dividing the screen and reducing the display image.

In addition, the driver needs to perform a brake operation in order to see the image on the surroundings monitor device, which can prompt the driver to perform a deceleration operation. Further, by outputting the image on the surroundings monitor at the time of engine startup, the lens There is an effect that the driver can confirm the dirt and the failure of the surrounding monitor device.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a front side monitor device according to the present invention.

FIG. 3 is a diagram showing an example of a selection circuit in the present invention.

FIG. 4 is a flowchart illustrating the operation of the first embodiment of the present invention.

FIG. 5 is a diagram showing a second embodiment of the present invention.

FIG. 6 is a diagram showing an example of a rear monitor device according to the present invention.

FIG. 7 is a flowchart illustrating the operation of the second embodiment of the present invention.

FIG. 8 is a diagram showing a third embodiment of the present invention.

FIG. 9 is a flowchart illustrating the operation of the third embodiment of the present invention.

FIG. 10 is a diagram showing Embodiment 4 of the present invention.

FIG. 11 is a flowchart illustrating the operation of the fourth embodiment of the present invention.

FIG. 12 is a diagram showing an example of a conventional vehicle surroundings monitor device.

FIG. 13 is a view showing another example of a conventional vehicle surroundings monitor device.

[Explanation of symbols]

 1 Front-side monitor device 2 Video signal generator device 3 Vehicle speed sensor 4 Brake operation detection switch 5 Brake operation recognition device 6 Selection circuit 7 Monitor

Claims (5)

[Claims] 1. A surrounding monitor device for photographing a video image around a vehicle, a device for outputting another video signal, a sensor for detecting an operation state of an in-vehicle device operated by a driver, and a signal from the sensor. The operation pattern recognition device that recognizes that the pattern has been performed and outputs a recognition signal, and, when the recognition signal is output, a video signal of the surrounding monitor device from a video signal of a device that outputs the other video signal. A vehicle surroundings monitoring device including a selection circuit that outputs a signal. 2. A brake operation detecting device for detecting an operation of a brake operated by a driver, an operation pattern recognition device for recognizing that a brake operation is performed in a predetermined pattern, and outputting a recognition signal, the recognition. The vehicle surroundings monitor device according to claim 1, wherein, when the signal is output, the surroundings monitor device video signal is output from a video signal of the device that outputs the other video signal. 3. A vehicle speed sensor for detecting the speed of the vehicle, a traveling direction detection sensor for detecting whether the vehicle is moving forward or backward, and a predetermined speed when the vehicle is moving backward and after the vehicle is moving backward. A traveling state recognition device that recognizes that the vehicle has moved forward and outputs a recognition signal, and, when the recognition signal is output, a video signal of the surrounding monitor device from a video signal of a device that outputs the other video signal. The vehicle surroundings monitoring device according to claim 1, wherein the surroundings monitoring device outputs. 4. A vehicle speed sensor for measuring a vehicle speed, a steering angle sensor for measuring a steering angle steered by a driver, and a travel distance for integrating a vehicle speed measured by the vehicle speed sensor to calculate a travel distance of the vehicle. A calculation device, a steering amount calculation device that integrates the steering angle measured by the steering angle sensor to calculate the steering amount performed by the driver, and a ratio of the steering amount to the movement amount, and the predetermined position where the result is calculated. A monitor output display determination device that outputs a switching signal for displaying a video signal of the surrounding monitor device on a display when the switching signal is within the range; and a device that outputs the other video signal when the switching signal is output. 2. The vehicle surroundings monitor device according to claim 1, wherein the surroundings monitor device outputs a video signal from the video signal. 5. An ignition switch for starting an engine of a vehicle, and a switching signal generator for outputting a switching signal for displaying images of a plurality of surrounding monitor devices on a display for a predetermined time immediately after the ignition switch is turned on. 5. The vehicle surrounding monitor according to claim 1, wherein, when the switching signal is output, a video signal of the surrounding monitor device is output from a video signal of a device that outputs the other video signal. apparatus.