KR100437241B1 - A system and method for back warning of automobil - Google Patents

Abstract

The present invention relates to a vehicle rear monitoring device and a monitoring method, and a microcomputer for controlling the operation of the rear monitoring device of a vehicle, and a reverse signal detecting unit for detecting a backward signal generated when the transmission gear moves to a reverse position when the vehicle is driven. When the reverse signal is applied, the camera is turned on by the microcomputer to supply power, and is driven by a power supplied from the camera power supply to capture the rear of the vehicle and output a signal. A camera and a monitor for receiving an image pickup signal output from the camera to display the screen to monitor the rear state of the vehicle.

Therefore, the rear of the vehicle is detected only when reversing and parking, so you can watch TV or VCR (Video Cassette Recorder) except when the vehicle is reversed. This deterioration of the monitor can be suppressed.

Description

Vehicle rear monitoring device and method {A system and method for back warning of automobil}

The present invention relates to an apparatus and a method for monitoring the rear of a vehicle when reversing. In particular, the present invention relates to a vehicle rear monitoring apparatus and a method for monitoring a rear state by reproducing an image signal input from a camera installed at the rear of a vehicle on a monitor.

In general, a driver driving a vehicle reaches and parks a destination by maneuvering the vehicle while sitting in the driver's seat by moving forward, adjusting left and right, and reversing. In order to drive and park the vehicle to the destination, the driver must operate the vehicle while looking at the left, right, and rear sides as well as the front.

In addition, there are many vehicles that operate due to an increase in the penetration rate of automobiles, and in recent years, serious monitoring is required in front of, behind, left, and right. In particular, there is a greater demand for the monitoring and attention of the rear of the vehicle during reverse travel and parking reverse of the vehicle.

In general, the rear rearview mirror and the inner room mirror of the driver's left and right are used for rear monitoring of the vehicle. However, the direction in which the driver can monitor the rear of the vehicle through the left and right outer back and inner room mirrors is limited and there are blind spots not visible. Therefore, if the clock behind the vehicle is not secured when the vehicle is reversed and parked, and there is a person or an obstacle behind the vehicle, an accident may occur that injuries or breaks the vehicle.

Accordingly, a monitoring apparatus and method have been developed in which a camera is installed at the rear of an automobile to capture a state of the rear of the vehicle, and the captured image is displayed on a monitor installed inside the vehicle to clearly recognize the state of the rear of the vehicle.

The conventional rear monitoring apparatus and method of such a vehicle can know the state of the rear of the vehicle by displaying a state of the image captured by the camera installed in the rear of the vehicle during the forward driving, the backward driving and the parking backward. It was made.

However, since the vehicle rear monitoring apparatus and method according to the related art have to always turn on the monitor to monitor the rear of the vehicle when driving a car, not only the TV or VCR (Video Cassette Recorder) can be watched, but also the driving time of the monitor is long. There was a problem that easily deteriorates.

Accordingly, an object of the present invention is to provide a vehicle rear monitoring apparatus capable of displaying a state of the rear of the vehicle on a monitor only when the vehicle is driven backward and parked backward.

Another object of the present invention is to provide a vehicle rear monitoring method that can display the state of the rear of the vehicle on the monitor only when the vehicle driving backward and parking.

In order to achieve the above object, a vehicle rear monitoring apparatus according to the present invention includes a microcomputer for controlling an operation of a rear monitoring apparatus of a vehicle, and a reverse signal sensing for sensing a backward signal generated when a transmission gear moves to a reverse position when the vehicle is driven. And a camera power supply for supplying power by being turned on by the microcomputer when the reverse signal is applied, and driven by power supplied from the camera power supply to capture the rear of the vehicle as a signal. And a monitor configured to receive an image pickup signal output from the camera and display the screen to monitor a rear state of the vehicle.

Preferably, the monitor further includes a monitor power supply unit that is 'on' by the microcomputer when the monitor is in the 'off' state and supplies power to the monitor 'on'.

In addition, it is preferable that the monitor further includes a signal processing unit for separating the composite video signal input from the outside into a video signal and an audio signal when the 'on' state.

In addition, when the monitor is in the 'on' state, the video signal switching unit blocks the input of the video signal to the monitor and inputs the image pickup signal, and the audio signal is removed or output as audio under the control of a microcomputer. It is preferable to further include a signal removing unit.

The rear monitoring method according to the present invention for achieving the above another object is to determine whether the reverse signal is input to the reverse signal detection unit when the shifting gear to the 'reverse (R)' position for the reverse driving of the car and the reverse of parking. And sensing the reverse signal when the reverse signal is input, and generating power from the camera power supply unit to turn on the camera to capture an image of the rear of the vehicle, and to generate an image signal. Determining whether the monitor displaying the state behind the vehicle is in an 'on' state; and when the monitor is in the 'on' state, blocking the complex image signal input from the outside to the monitor and Inputting the control panel, and when the monitor is in an 'off' state, the monitor is 'on' under the control of the microcomputer to photograph And a step of inputting the signal, and by the imaging signal is the monitor type comprising a step of displaying the vehicle rear is to proceed.

Determining whether the reverse signal is blocked in the reverse signal detecting unit when the shifting gear is moved from the 'reverse (R)' position to the other position after completion of the reverse driving and parking reverse of the vehicle; Preferably, the reverse signal detecting unit further includes a step of converting the reverse signal into a state before the reverse signal is input.

1 is a block diagram of a vehicle rear monitoring apparatus according to the present invention.

2 is a flowchart showing a vehicle rear monitoring method according to the present invention;

Explanation of symbols on the main parts of the drawings

11: microcomputer 13: backward signal detection unit

15: power supply 17: camera

19: signal processing unit 21: image signal switching unit

23: monitor power supply 25: monitor

27: audio signal removing unit 29: audio

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a vehicle rear monitoring apparatus according to the present invention.

The vehicle rear monitoring apparatus according to the present invention includes a microcomputer 11, a reverse signal detecting unit 13, a power supply unit 15, a camera 17, a signal processing unit 19, an image signal switching unit 21, and a monitor power supply unit. 23, a monitor 25, an audio signal removing unit 27 and an audio 29.

In the above, the reverse signal detecting unit 13 detects a power applied to the reverse lamp, that is, a reverse signal when the shift gear is moved to the 'reverse (R)' position for reversing driving and reversing parking of the vehicle in the driving state. Transfer to microcomputer 11. In the above, the driving state of the vehicle may be a starting or forward driving state.

The camera power supply unit 15 is turned on by the microcomputer 11 when the reverse signal is applied, and supplies power to the camera 17.

The camera 17 is installed at the rear of the vehicle and is driven by the power supplied from the camera power supply 15 to capture the rear of the vehicle. The camera 17 uses a charge coupled device (CCD) camera.

The signal processor 21 separates a composite video signal of a TV or VCR input from the outside into a video signal and an audio signal.

When the monitor 25 is in the 'ON' state, the image signal switching unit 21 blocks the image signal output from the image signal switching unit 21 by the control signal of the microcomputer 11 and captures the image output from the camera 17. The signal is transmitted to the monitor 25. In addition, since the composite video signal is not input when the monitor 25 is in the 'off' state, the image signal switching unit 21 directly transfers the captured image signal output from the camera 17 to the monitor 25.

The image signal switching unit 21 transmits the image signal separated by the signal processing unit 19 to the monitor 25 when the reverse signal is not input to the reverse signal detecting unit 13, that is, when the vehicle moves forward. .

The monitor power supply unit 23 supplies power to the monitor 25 in the 'off' state when the backward signal is input to the backward signal detecting unit 13.

The monitor 25 receives and displays a signal obtained by photographing a state of the rear of the vehicle transmitted from the image signal switching unit 21. When the monitor 23 is in the 'off' state, the monitor 23 is in the 'on' state by the power input to the monitor power supply 23 to display the rear state of the vehicle transmitted from the image signal switching unit 21.

The voice signal removing unit 27 removes the voice signal separated by the signal processing unit 19 by the control of the microcomputer 11 or outputs the audio signal to the audio 29. The voice signal remover 27 may be a voice signal of an audio device (not shown) as well as a voice signal separated from the signal processor 19.

The audio 29 outputs a voice signal not removed by the voice signal removing unit 27 as voice.

2 is a flowchart illustrating a vehicle rear monitoring method according to the present invention.

The operation of the vehicle rear monitoring apparatus shown in FIG. 1 will be described with reference to the flowchart of FIG. 2.

First, it is determined whether the reverse signal of the transmission gear is input to the reverse signal detecting unit 13 when the vehicle is in the driving state, that is, the start or the forward driving state. The reverse signal is generated when the transmission gear is moved to the 'reverse (R)' position for reversing driving and reversing parking while the vehicle is in a start state or a stop state while driving forward (step 1). (S1)). At this time, if the reverse signal is not input to the reverse signal detecting unit 13, the signal is returned to perform a return.

The microcomputer 11 detects the backward signal input to the backward signal detecting unit 13 and is installed at the rear of the vehicle to turn on the camera power supply unit 15 for supplying power for driving the camera 15 for monitoring the rear. (Step 2 (S2)), the camera 15 is turned on by this power supply, and the back of the vehicle to be taken is imaged (Step 3 (S3)).

When the backward signal is input to the backward signal detecting unit 13, it is determined whether the A / V (Audio / Video) system including the monitor 25 and the audio 29 is in an 'on' state (step 4 (S4). )).

When the A / V (Audio / Video) system is in the 'on' state, the microcomputer 11 controls that the video signal separated from the composite video signal of the TV or VCR input from the outside is input to the monitor 25. The video signal switching unit 21 cuts off (step 5 (S5)). Therefore, the signal picked up by the camera 17 is input to the monitor 25.

If the A / V system is determined to be in the 'off' state in step 4 (S4), that is, when the composite video signal of the TV or the VCR is not input from the outside, the microcomputer 11 supplies power for turning on the monitor 25. Turn on the monitor power supply 23 to supply (step 6 (S6)). At this time, the signal picked up by the camera 17 is input to the monitor 25.

The monitor 25 displays the rear at which the vehicle is to be driven by the imaging signal input from the camera 17 (step 7 (S7)). At this time, the audio 29 outputs sound by the voice signal separated from the signal processor 19, but the voice signal is removed from the voice signal remover 27 under the control of the microcomputer 11, so that the sound is not output. You can do this.

In the step 7 (S7) it is possible to recognize the rear state by the screen displayed on the monitor 25, to avoid the accident of collision with people and obstacles when reversing in progress and when parking, can prevent personal injury and vehicle damage have.

When reversing is completed during the reverse driving and parking of the vehicle, if the shifting gear is moved to the driving, neutral or parking position, the reverse signal is not inputted to the backward signal detecting unit 13 which turns off the reverse lamp since power is not applied to the reverse lamp. (Step 8 (S8)). When the reverse signal is continuously input to the reverse signal detecting unit 13, it is determined that reversal is not completed during the reverse driving and parking of the vehicle and continues.

If the reverse signal is not input to the reverse signal detecting unit 13, the microcomputer 11 has the initial monitor 25 and the audio 29 in the 'on' or 'off' state before the shift gear is moved to the reverse position. (Step 9 (S9)).

If the first monitor 25 and the audio 29 were in the 'on' state before the shift gear was moved to the reverse position in step 9 (S9), the video and audio signals separated by the signal processor 19 are monitored. And audio 29 are respectively inputted, whereby the monitor 25 and audio 29 are outputted by outputting video and audio (step 10 (S10)).

However, if the first monitor 25 and audio 29 were in the 'off' state before the shift gear was moved to the reverse position in step 9 (S9), the monitor power supply unit 23 is controlled by the control of the microcomputer 11. OFF ', thereby completing the operation by turning off the monitor 25 so that the screen is not displayed (step 11 (S11)).

As described above, the present invention captures the rear state by turning on the rear surveillance camera installed at the rear of the vehicle only when the vehicle travels backward and parks, and inputs the captured signal to the monitor to rearward the vehicle. The monitor displays the status, but when the monitor is 'on', the video signal separated from the composite video signal input from the outside is blocked from being input to the monitor. When the monitor is 'off', power is supplied from the monitor power supply. To turn this monitor on. Therefore, since the monitor inputs an image pickup signal and the monitor displays a rear state in which the vehicle is to be driven by the image pickup signal input from the camera, the monitor can recognize the rear state.

Therefore, since the present invention detects the rear state of the vehicle only when reversing during driving and parking, it is possible to watch TV or VCR (Video Cassette Recorder) except when the vehicle is reversed. This has the advantage of suppressing deterioration of this monitor which is degraded by use.

Claims (6)

In a conventional vehicle rear monitoring apparatus including a microcomputer, a reverse signal detecting unit, a camera, a monitor, The rear monitoring device of the vehicle, Camera power supply for supplying power to the camera is turned on by the microcomputer when the reverse signal is applied from the backward signal detector, A monitor power supply for supplying power to the monitor such that the image information photographed by the camera is displayed when the reverse signal is applied from the reverse signal detecting unit by being turned on by the microcomputer; A signal processing unit for separating a complex video signal input from the outside into a video signal and an audio signal when the monitor is in an 'on' state, An image signal switching unit which blocks the image signal from being input to the monitor and inputs the image pickup signal when the monitor is in an 'on' state; And a voice signal removing unit configured to remove or output the voice signal through the control of the microcomputer. delete delete delete Determining whether a reverse signal is input to the reverse signal detecting unit when the shifting gear is moved to the reverse position for reversing driving and reversing the parking; When the reverse signal is input, the microcomputer detects the reverse signal and generates power from the camera power supply unit to turn on the camera to photograph the rear of the vehicle to generate an imaging signal; Determining whether the monitor displaying the state behind the vehicle is in an 'on' state by the imaging signal; If the monitor is in an 'on' state, blocking an external composite image signal from being input to the monitor and inputting the captured image signal; If the monitor is in an 'off' state, inputting the imaging signal by 'turning on' the monitor under the control of the microcomputer; And displaying the rear at which the vehicle is to be driven by the imaging signal inputted by the monitor. The method as set forth in claim 5, further comprising: determining whether the reverse signal is blocked in the reverse signal detecting unit when the shift gear is moved from the 'reverse (R)' position to the other position after completion of the reverse driving and parking reverse of the vehicle; And converting the monitor into a state before the reverse signal is input to the reverse signal detecting unit.