JP2011218826A - Traveling alarm device of vehicle with low travelling sound - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably invite an attention of pedestrians in a wide range around the vehicle having low traveling sound without degrading low noise property of the vehicle having low traveling sound, in a device to be mounted on a vehicle having low traveling sound such as an electric automobile and a hybrid automobile, for alerting pedestrians of the vehicle approaching.SOLUTION: The alarm device includes a pedestrian detection sensor 1 detecting a pedestrian around a vehicle C, and an alarm composed of a speaker device 2 and a light device 3 setting off an alarm directionally to the detected pedestrian. The pedestrian detection sensor 1, the speaker device 2 and the light device 3 are incorporated as a unit in a door mirror of a vehicle.

Description

  The present invention belongs to a technical field related to a device that is equipped on a vehicle with low traveling sound such as an electric vehicle or a hybrid vehicle and warns a pedestrian that the vehicle is approaching.

  Recently, the spread of electric vehicles and hybrid vehicles has been promoted due to requests for environmental measures. These electric and hybrid vehicles have no noise or low engine noise. Therefore, at low speeds where the wind noise is low, the pedestrian is not aware of the approach of the vehicle. is doing.

  For this reason, frequent occurrences of contact accidents between low running sound vehicles such as electric cars and hybrid cars and pedestrians are expected. Therefore, attempts have been made to generate a pseudo running sound in a low running sound vehicle, but generating a pseudo running sound normally causes the low noise characteristic to disappear. Therefore, the development of a technology capable of warning a pedestrian only when necessary is required because it would be contrary to the demand for environmental measures.

  Conventionally, as a technique capable of warning a pedestrian only when necessary, for example, a technique described in Patent Document 1 is known.

  Patent Document 1 includes a pedestrian detection sensor that detects a pedestrian in front of the vehicle, and a speaker that generates a pseudo running sound toward the front of the vehicle when the pedestrian detection sensor detects the pedestrian. A running warning device for a low running sound vehicle equipped at the front of the vehicle is described.

  The travel warning device for a low travel sound vehicle according to Patent Document 1 does not disclose a specific configuration, but discloses a basic idea of generating a pseudo travel sound only when necessary, not in a normal state.

Japanese Patent Laid-Open No. 2002-2424

  In the running warning device for a low running sound vehicle according to Patent Document 1, if a pseudo running sound is generated to the extent that a pedestrian is alerted, a considerable volume of sound is diffused around. There is a problem that the low noise characteristic is impaired. In addition, since the pedestrian detection sensor and the speaker are installed in the front part of the vehicle, there is a problem that the detection range of the pedestrian and the reach range of the pseudo driving sound of the speaker are limited by the vehicle body or the like. is there.

  The present invention has been made in consideration of such problems, and can reliably call attention to a wide range of pedestrians around a low-running sound vehicle without impairing the low-noise performance of the low-running sound vehicle. It is an object of the present invention to provide a running warning device for a low running sound vehicle.

  In order to solve the above-described problems, the low-sound vehicle traveling alarm device according to the present invention employs means described in each of the claims.

  That is, in claim 1, a pedestrian detection sensor for detecting a pedestrian around the vehicle and an alarm device for sending an alarm toward the detected pedestrian are incorporated in a door mirror of the vehicle. And

  In this means, since the alarm device has directivity with respect to the pedestrian, the alarm does not spread around. In addition, since the pedestrian detection sensor and the alarm device are incorporated into the door mirror protruding in the side direction from the vehicle body, the detection range of the pedestrian and the alarm reach range of the alarm device are not limited by the vehicle body. .

  Further, in claim 2, in the travel warning device for a low running sound vehicle according to claim 1, the pedestrian detection sensors are respectively installed on the door mirrors on both sides, and the pedestrian detection sensors walk on the detection signals from both sides. A controller for calculating the position of the person and instructing the alarm device to direct to the pedestrian is connected.

  In this means, the pedestrian detection sensor is composed of two units installed on the door mirrors on both sides, and the controller calculates the position of the pedestrian on the basis of the triangulation principle from the detection signals of the two pedestrian detection sensors. Thus, the position of the pedestrian is accurately determined.

  According to a third aspect of the present invention, the pedestrian detection sensor is capable of detecting a plurality of pedestrians at the same time, and the controller detects the plurality of detected pedestrians. It is characterized in that processing with a ranking is performed from a person close to the position, and an alarm device is instructed to point toward a pedestrian according to the ranking.

  With this means, a warning is given to a plurality of pedestrians detected by the pedestrian detection sensor from a person who is likely to come into contact with the vehicle by instructing the controller to issue a warning from a person close to the vehicle. .

  According to a fourth aspect of the present invention, in the driving alarm device for the low-running sound vehicle according to any one of the first to third aspects, the alarm device is a speaker that emits a pseudo driving sound and an actuator that directs the speaker to the detected pedestrian. A speaker device comprising:

  In this means, the alarm device is composed of a speaker device including a speaker and an actuator, and an alarm including a pseudo running sound is given.

  Moreover, in Claim 5, in the driving | running | working warning device of the low running sound vehicle in any one of Claims 1-4, a warning device is aimed at the pedestrian by which the light and light which irradiate the road surface slightly before a pedestrian were detected. It is characterized by being a light device comprising an actuator to be operated.

  In this means, the alarm device is composed of a light device including a light and an actuator, and an alarm is formed by irradiating the road surface slightly before the pedestrian.

  The low running sound vehicle traveling warning device according to the present invention has a directivity to the pedestrian so that the warning does not spread to the surroundings. There is an effect that is not lost. In addition, since the pedestrian detection sensor and the alarm device are incorporated into the door mirror protruding in the side direction from the vehicle body, the detection range of the pedestrian and the alarm reach range of the alarm device are not limited by the vehicle body. Therefore, there is an effect that it is possible to surely call attention to a wide range of pedestrians around the low running sound vehicle.

  Furthermore, as claimed in claim 2, the pedestrian detection sensor is composed of two units installed on the door mirrors on both sides, and the controller determines the position of the pedestrian by the principle of triangulation from the detection signals of the two pedestrian detection sensors. By calculating, since the position of the pedestrian is accurately determined, there is an effect that accuracy is ensured in the directivity of the alarm device with respect to the pedestrian.

  Furthermore, as claimed in claim 3, from a person who is highly likely to come into contact with the vehicle by instructing a plurality of pedestrians detected by the pedestrian detection sensor to alarm from a person in a position near the vehicle. Since the alarm is issued, there is an effect that a contact accident between the low-running sound vehicle and the pedestrian is surely prevented.

  Further, as claimed in claim 4, since the alarm device is composed of a speaker device including a speaker and an actuator, and an alarm consisting of a pseudo driving sound is given, an accidental contact between a low-running sound vehicle and a pedestrian is caused by an audible alarm. There is an effect that is surely prevented.

  Further, as claimed in claim 5, since the alarm device is composed of a light device including a light and an actuator, and an alarm is formed by irradiating the road surface slightly ahead of the pedestrian, the visual alarm is used to walk with the low running sound vehicle. This has the effect of reliably preventing contact accidents with people.

It is a front view (including partial enlargement) of the form for carrying out the run warning device of the low running sound vehicle concerning the present invention. It is a top view of FIG. FIG. 3 is a control block diagram of FIG. 2. It is a figure which shows the example of a detection of the pedestrian in FIG. It is a figure which shows the example of a warning to the pedestrian in FIG. It is a figure which shows the example of a warning to the other pedestrian in FIG. It is a flowchart of control of FIGS.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the driving | running | working warning apparatus of the low driving | running | working sound vehicle which concerns on this invention is demonstrated based on drawing.

  In this form, what is applied to the vehicle C which consists of a normal passenger car is shown.

  As shown in FIGS. 1 and 2, this embodiment has a pedestrian detection sensor 1, an alarm device (speaker device 2) on the front side of both door mirrors D provided to protrude in the side direction at the front door of the vehicle C. , And a light device 3) are unitized and incorporated, and a controller 4 is connected to two pedestrian detection sensors 1 and alarm devices (speaker device 2 and light device 3).

  The pedestrian detection sensor 1 is configured to detect a plurality of pedestrians M1 and M2 walking in front of the vehicle C traveling forward by transmitting sound waves, light waves, electromagnetic waves and the like and receiving reflected waves. .

  The speaker 2 includes a speaker 21 that generates pseudo running sound and an actuator 22 that can change the direction of the speaker 21 in three dimensions. For the speaker 21, a speaker with high directivity that does not diffuse sound is selected and set so as to be directed to the average height (0.8 to 1.5 m) of the human ear. The actuator 22 is configured by combining a small motor and a gear structure.

  The light device 3 includes a light 31 that irradiates light and an actuator 32 that can change the direction of the light 31 in three dimensions. For the light 31, a highly directional light (for example, LED) that does not diffuse light around is selected, and is set to irradiate the road surface R slightly before walking (about 1 m) of the pedestrians M1 and M2. . The actuator 32 is configured by combining a small motor and a gear structure.

  As shown in FIG. 3, the controller 4 includes an actuator driver 52 that controls the driving of the actuator 22 of the speaker device 2 and an actuator driver 53 that controls the driving of the actuator 32 of the light device 3. And are connected. As shown in FIG. 4, the central processing unit 41 receives the detection signals of both pedestrian detection sensors 1, and determines the positions of the pedestrians M1, M2 based on the principle of triangulation from the received angles a, b, c, d. X-axis and Y-axis coordinates) are calculated, and a plurality of pedestrians M1 and M2 are ranked from those who are close to the vehicle C. Then, as shown in FIG. 5, the central processing unit 41 applies the actuator 22 of the speaker device 2 and the actuator 32 of the light device 3 to the pedestrian M1 that is closest to the vehicle C (first place). It is driven to direct the direction of the speaker 21 of the speaker device 2 and the direction of the light 31 of the light device 3 in a three-dimensional manner so as to generate a pseudo running sound and emit light. Next, as shown in FIG. 6, the central processing unit 41 applies the actuator 22 of the speaker device 2 and the actuator 32 of the light device 3 to the pedestrian M2 that is in a position close to the next to the vehicle C (second place). To direct the direction of the speaker 21 of the speaker device 2 and the direction of the light 31 of the light device 3 in a three-dimensional manner, and instruct to emit pseudo running sound and emit light. . This warning for pedestrians M1 and M2 is repeated several times. The central processing unit 41 stores pseudo running sound generated by the speaker 21 of the speaker device 2 and adjusts the volume by amplifying the volume corresponding to the position (distance) of the pedestrians M1 and M2. Features are provided. Further, the central processing unit 41 is provided with a light amount adjustment function for adjusting the light amount of the light 31 of the light device 3 corresponding to the positions (distances) of the pedestrians M1 and M2, and also has a function of blinking the light 31. It has been.

  According to this form, pedestrian M1. When M2 is detected, the pedestrian M1. An alarm is issued by sound and light having directivity with respect to M2. Therefore, a contact accident between the vehicle C and the pedestrians M1 and M2 is reliably prevented. In addition, since the sound and light alarms are not unnecessarily diffused to the surroundings, the low noise performance of the low running sound vehicle is not impaired. Note that the light alarm is effective for people with hearing impairments and is set to be easy to visually recognize as being about 1 m before irradiation corresponding to the line of sight while walking.

  Further, the pedestrian detection sensor 1, the speaker device 2, and the light device 3 are incorporated in the door mirrors D on both sides protruding in the side direction from the vehicle body, so that the detection range of the pedestrians M1 and M2, the speaker device 2, and the light device 3 Since the reach of the alarm is not limited by the vehicle body or the like, it is possible to reliably call attention to a wide range of pedestrians M1 and M2 around the low running sound vehicle.

  Further, according to this embodiment, since the pedestrian detection sensor 1, the speaker device 2, and the light device 3 are incorporated in the door mirror D as a unit, the vehicle C can be easily installed. Further, the existing vehicle C can be easily modified.

  In addition, if the location where the pedestrian detection sensor 1, the speaker device 2, and the light device 3 are incorporated in the door mirror D is changed, the pedestrians M1 and M2 walking behind the vehicle C when traveling backward can also be detected. . In both forward traveling and backward traveling of the vehicle C, it is possible to detect pedestrians M1 and M2 walking both forward and backward.

  As described above, the speaker device 2 and the light device 3 can be incorporated only into the door mirror D on one side in addition to the illustrated embodiment.

  Furthermore, even if there are three or more pedestrians M1 and M2, it is naturally possible to cope.

  The running warning device for low running sound vehicles according to the present invention can be applied to various vehicles other than ordinary passenger cars.

1 Pedestrian detection sensor 2 Speaker device (alarm)
21 Speaker 22 Actuator 3 Light device (alarm)
31 Light 32 Actuator 4 Controller C Vehicle D Door mirror M1, M2 Pedestrian R Road surface

Claims (5)

  A low-running sound vehicle characterized by incorporating a pedestrian detection sensor for detecting pedestrians around the vehicle and an alarm device for sending an alarm toward the detected pedestrian in a door mirror of the vehicle. Alarm device.   2. The low-sound vehicle travel warning device according to claim 1, wherein the pedestrian detection sensors are respectively installed on the door mirrors on both sides, and the pedestrian detection sensors calculate the positions of the pedestrians with detection signals from both sides. A running warning device for a low running sound vehicle, characterized in that a controller for instructing the direction to a pedestrian is connected to the alarm device.   The low-sound-vehicle running alarm device according to claim 2, wherein the pedestrian detection sensor can simultaneously detect a plurality of pedestrians, and the controller detects a plurality of detected pedestrians from a person close to the vehicle. A traveling warning device for a low-running sound vehicle, characterized in that ranking processing is performed and an alarm device is directed to a pedestrian according to the ranking.   The low-sounding vehicle traveling warning device according to any one of claims 1 to 3, wherein the alarm device is a speaker device including a speaker that emits pseudo traveling sound and an actuator that directs the speaker to a detected pedestrian. A running warning device for a low running sound vehicle.   5. The driving alarm device for a low running sound vehicle according to any one of claims 1 to 4, wherein the alarm device comprises a light for irradiating a road surface slightly ahead of the pedestrian and an actuator for directing the light to the detected pedestrian. A running warning device for a low running sound vehicle, characterized in that:

Images