JP2002022828A - Detector for moving object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take necessary countermeasures to secure safety such as warning or the like by detecting a moving object approaching from behind without turning back. SOLUTION: There are set a moving object-detecting means 13 for detecting the moving object approaching from behind a vehicle or a man, and a warning means 12 for generating a warning by evaluating a risk of the moving object. Also, there are set the moving object-detecting means 13 for detecting the moving object approaching from behind the vehicle, the warning means for generating the warning by evaluating the risk of the moving object, and lock means A4-A6 for locking doors of the vehicle when the warning is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving object detecting apparatus, and more particularly, to a moving object such as a stopped vehicle or a vehicle approaching from behind a walking human to detect a moving object and to provide a warning or the like necessary for ensuring safety. Related to the device to take measures.

[0002]

2. Description of the Related Art When a door of a stopped vehicle is opened, if the door is on the driver's seat side, the presence or absence of a vehicle approaching from behind can be confirmed by looking at a room mirror or a door mirror.
You can open the door safely.

[0003]

However, in the case of other doors, there is no way to confirm the safety unless the driver looks back. Therefore, especially at the door on the side of the backseat road, the door is approached from behind by unexpected opening. There is a safety problem that it is undeniable that there is a risk of contact with the vehicle (see FIG. 2).

Accordingly, an object of the present invention is to detect a moving object approaching from behind without looking back, and to take measures necessary for ensuring safety such as warning.

[0005]

According to the first aspect of the present invention,
It is characterized by comprising moving object detection means for detecting a moving object approaching from behind a vehicle or a human, and warning means for estimating a degree of danger of the moving object and issuing a warning. According to a second aspect of the present invention, there is provided a moving object detecting means for detecting a moving object approaching from behind a vehicle, a warning means for evaluating a risk of the moving object and issuing a warning, and the warning is issued. Locking means for sometimes locking the vehicle door.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS.
An embodiment applied to a door car will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a passenger car;
Is the headlight, 4 is the front right door, 5 is the left front door, 6
Is a rear right door, and 7 is a rear left door. Each of the four doors 4 to 7 is an outward opening type door that is opened to the side by operating a knob (not shown) provided on the indoor side. Each of the doors 4 to 7 is provided with a sensor S * for detecting door opening and an actuator A * (lock means) for automatic locking. Here, * is a substitute substitution character for the door code. For example, if the front door is the right door 4, S
4, A4.

Signals 8 to 11 from all the sensors S * are collected in a control unit 12 (warning means). The control unit 12 includes, but is not limited to, a microcomputer. The control unit 12 executes a predetermined program to control the rear confirmation device 13 attached to the rear of the vehicle body. A series of processes are performed in which the degree of danger of a moving object approaching from behind is evaluated and warnings and other necessary measures necessary for ensuring safety are taken.

Here, the rear confirmation device 13 has a function as a moving object detection means, and emits a high-frequency signal 15 such as a radio wave, a sound wave or a light wave in a monitoring direction behind the vehicle body and exists in the same direction. Signal 16 from a moving object
To measure the distance to the object, the moving speed and the moving direction of the object. The distance can be obtained by the time from the emission of the signal to the reception of the reflected signal, the moving speed can be obtained by the phase difference (or frequency difference) between the emitted signal and the reflected signal, and the moving direction can be obtained. , And the polarity of the same phase difference (or frequency difference). For example, assuming that the emission time of the signal is A and the reception time of the reflected signal is B, the distance can be obtained by A [seconds] −B [seconds] × (light speed) ÷ 2. Further, if the phase difference (or frequency difference) between the emission signal and the reflection signal is ν, the moving object is approaching when ν becomes smaller than 0 (that is, becomes larger in the negative direction) due to the Doppler effect, When ν becomes larger than 0 (that is, becomes larger in the positive direction), the moving object is moving away. Therefore, the moving speed (relative speed) can be obtained from the magnitude of ν, and the moving direction is obtained from the polarity of ν. be able to.

Hereinafter, some examples of the processing program executed by the control unit 12 will be described. <First Example> In this example, when the approach of a moving object from behind is detected when the door is opened, an alarm or the like is issued to prompt the door to be closed immediately. That is, the controller 12 controls the sensors S4 to S4 attached to the doors 4 to 7, respectively.
7, the rear confirmation device 13 is activated immediately (or may be activated beforehand) when any one of the doors 7 indicates the open state of the door, and based on the detection signal 14, the degree of danger of the moving object approaching from behind is detected. After evaluating the (distance, speed, direction), if the degree of danger is equal to or higher than a certain level, a series of processing is performed to emit a warning sound or a voice synthesis sound in the room to prompt the door to be closed. According to this, when the door is started to be opened, a warning is issued when the vehicle is approaching from behind and there is a possibility of contact with the vehicle, so that the door can be closed immediately. As a result, a special effect that the safety of the own vehicle as well as other vehicles can be ensured can be obtained.

<Second Example> A drawback of the above-described example is that safety confirmation at the rear does not start unless the door is started to be opened.
Therefore, if the door is suddenly opened, there is a possibility that the warning may not be made in time, and there is a disadvantage that the reliability is poor. In this example, the inconvenience is solved. In short, the control unit 12 detects the speed of the own vehicle (hereinafter, vehicle speed), and stops the vehicle when the vehicle speed becomes extremely low (zero or near zero). Judgment is made, and thereafter, the rear confirmation device 13 is activated (may be activated in advance), and based on the detection signal 14, the degree of danger (distance, speed, direction) of the moving object approaching from behind is evaluated. In addition, a series of processes of issuing a warning sound or a synthesized voice sound in the room when the degree of danger is equal to or more than a certain level to urge the closing of the door is executed. According to this, the rear safety check is started before the door is opened, so that there is no safety inconvenience even if the door is suddenly opened unless a warning or the like is issued.

<Third Example> The above two examples are both
It only alerts the approach of moving objects from behind with warnings, etc.Since the opening of the door depends solely on the judgment of the occupant, for example, some people did not know the meaning of the warning or ignored the warning In this case, there is a disadvantage that safety cannot be ensured at all. In this example, perfect safety is ensured by using an existing door lock mechanism. That is, the control unit 12 detects the speed of the own vehicle (hereinafter, vehicle speed), determines that the vehicle is stopped when the vehicle speed becomes extremely low (zero or near zero), and thereafter activates the rear confirmation device 13 ( (It may be activated in advance.) Based on the detection signal 14, the degree of danger (distance, speed, direction) of a moving object approaching from behind is evaluated. Emits sounds and voice synthesis sounds,
Further, a series of processes of activating the actuators A4 to A6 of the doors 4 to 7 to lock the doors are executed.
According to this, the approach of a moving object from behind is notified by a warning or the like, and all the doors 4 to 7 are immediately locked, so that there are people who do not know the meaning of the warning or who ignore the warning. However, since the door cannot be opened at all, perfect safety can be ensured.

In this embodiment, the door is locked in advance so that the door is unlocked when there is no approach of a moving object from behind or when the approaching object has a low danger. You may.

As described above, in each of the above examples, a moving object such as a vehicle approaching from behind can be detected, and necessary safety measures such as a warning and a door lock can be taken. However, other than this, for example, the present invention can be applied to a walking person. That is, the rear confirmation device 13 of FIG. 1 is carried on the back, and the control unit 12 and the warning device of FIG. 1 are carried. Note that the sensor S * and the actuator A * in FIG. 1 are not required. In this case, the control unit 12 may emit the signal 15 at regular intervals to confirm the safety of the rear, and may issue a warning by sound or light when there is a moving object approaching from behind. If it is attached to a school bag or the like, it is possible to plan traffic safety measures for children on their way to school.

[0015]

According to the first aspect of the present invention, a moving object detecting means for detecting a moving object approaching from behind a vehicle or a human, and a warning for estimating a risk of the moving object and issuing a warning. Means, it is possible to check the safety of the rear without looking back. According to the second aspect of the present invention, a moving object detecting means for detecting a moving object approaching from behind the vehicle, a warning means for evaluating the degree of danger of the moving object and issuing a warning, and issuing the warning And locking means for locking the door of the vehicle when it is received, so that careless opening of the door can be particularly prevented, and contact with a moving object approaching from behind can be reliably avoided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment.

FIG. 2 is a rear approach diagram of a moving object.

[Explanation of symbols]

 A4 to A6 Actuator (locking means) 12 Control unit (warning means) 13 Rear confirmation device (moving object detecting means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60R 21/00 626 B60R 21/00 626D 628 628D G01S 15/93 G01S 15/93 G08B 21/00 G08B 21 / 00 NF term (reference) 5C086 AA51 AA53 BA22 BA30 CA06 CA09 CA11 CA21 CA25 CB27 CB28 DA02 EA13 EA17 EA45 FA07 FA11 5J070 AB01 AC02 AC06 AC11 AE01 AF03 AK22 BA01 BD04 BD08 BF02 BF03 BF04 5J083 AB13 AD04 AD04

Claims (2)

[Claims] 1. A moving object detecting means for detecting a moving object approaching from behind a vehicle or a human, and a warning means for evaluating a degree of danger of the moving object and issuing a warning. Moving object detection device. 2. A moving object detecting means for detecting a moving object approaching from behind a vehicle, a warning means for evaluating a degree of danger of the moving object and issuing a warning, and when the warning is issued, A moving object detection device comprising: a lock unit that locks a door of a vehicle.