JPS6031077A - Rear monitor apparatus for vehicle - Google Patents

Abstract

PURPOSE:To attain to accurately monitor the rear without generating erroneous judgement, by displaying the position of matter present in the rear of a vehicle by an alarm corresponding to the position direction. CONSTITUTION:Three sensor 2a-2c, each of which intermittently projects an ulrasonic pulse signal and receives the reflected waves from detected matter, are provided to the rear part of a vehicle 1. In addition, three alarms 4a-4c such as speakers or buzzers corresponding to the sensors 2a-2c are provided to the rear panel 3 in the vihicle 1 and, when a matter is present in a right side, an alarm sound is generated from the right side alarm 4a corresponding to the position direction thereof. In this case, the discrimination of a distance direction is displayed by changing a sound amount or oscillation frequency corresponding to a mode.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a vehicle rear monitoring device using an ultrasonic detector.

[Background Art] Conventional detection output display means in this type of device include those that appeal to the senses of sight or hearing.

Displays that appeal visually include lamp displays, (1) displays using light emitting diodes (LEDs), and analog displays; displays that appeal to the senses include buzzers,
There is an alarm sound from a speaker or a voice alarm.

The output display mode varies depending on the position of the detected object, for example, in FIG. 1, there are left, middle, right, and 0.
It is divided into 5m, 1.0m, and 20m and displayed in nine modes. That is, the distance to the location where the object exists and the position in the left and right direction are determined. In FIG. 1, 1 is a vehicle, and 2 is a sensor of an ultrasonic detector.

When displaying these modes, there are relatively simple and many different ways to display them using visually appealing display means.
For example, by installing a display on the front panel of the driver's seat,
These methods include a method using an LED panel or lamp that divides the mode as described above, or a method of displaying in an analog manner using a display section corresponding to the position in the left and right direction.

However, for safety reasons, a rear monitoring device for a vehicle needs to inform the driver of the location of an object accurately and without misunderstanding, and the means of display should be auditory rather than visual. It can be said that things are better.

When a means that appeals to the senses of hearing is used, the display mode is as follows: ■ The volume of the speaker or buzzer is changed in accordance with each mode.

■ Change the oscillation frequency according to each mode.

■Displayed by audio pedestal.

■ Others are possible. The method (■) mentioned above is considered to be suitable for determining the distance direction, but is not suitable for determining the left/right direction because it may lead to incorrect judgment.

In addition, in method (2), there is a time lag between displaying and understanding, which may result in slow display speed and poor understanding.

(Object of the Invention) The present invention has been made in view of the above points, and its object is to provide a vehicle monitoring device that appeals to the sense of hearing, is accurate, and does not cause misjudgment.

(Disclosure of the Invention) FIG. 2 is a simplified diagram showing an embodiment of the present invention, in which there are three devices at the rear of the vehicle 1 that intermittently project ultrasonic pulse signals and receive reflected waves from sensing objects. sensor 211. 2b
, 2c are installed on the rear panel 3 inside the vehicle. Three alarm devices 4a, 4b, 4c such as speakers or buzzers corresponding to 2b, 2C are installed. For example, if an object exists on the right side, the alarm device 4a on the right side corresponding to the direction of the object emits an alarm sound. Further, the determination of the distance direction is displayed using the method (1) or (2) described in the background art section. In addition, 5 in the figure indicates each sensor 2a, 2b,
The main body has a built-in signal processing section that creates, processes, and outputs 2C signals.

The present invention does not need to be limited to the above embodiments; for example, a plurality of sensors may be used, and the alarm does not need to be installed on the rear panel.

(Effects of the Invention) As described above, the present invention displays the position of an object behind the vehicle using an alarm corresponding to the position direction.
It has been possible to provide a vehicle rear monitoring device that is accurate and free from the risk of misjudgment, and which poses no problem in terms of safety.

[Brief explanation of the drawing]

Figure 1 is a simplified diagram illustrating the display mode of the rear monitoring device for a vehicle, and Figure 2 is a simplified diagram illustrating an embodiment of the present invention. 1...Vehicle, 2...Sensor, 4...Alarm, 5
...Body. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 2

Claims (1)

[Claims] (1) For vehicles, consisting of multiple sensor units that intermittently project ultrasonic pulse signals and receive reflected waves from sensing objects, and a main body signal processing unit that creates, processes, and outputs signals from the sensor units. A rear monitoring device for a vehicle, characterized in that a plurality of alarm devices that output alarm sounds corresponding to the plurality of sensors are installed in the vehicle.