JP2021135680A - Notification device - Google Patents

Abstract

To provide a notification device capable of quickly recognizing a position of a moving object with respect to a vehicle.SOLUTION: A notification device comprises: a pair of detection units that are arranged apart from each other in a vehicle width direction and detect an object T approaching a vehicle; a pair of notification units 8a and 8b that are arranged correspondingly to the pair of detection units and notify a passenger of the approach of the object T; calculation units 6a and 6b that calculate a position and a moving direction of the object T based on the detection information of the pair of detection units; and a notification control unit 7 that controls the pair of notification units 8a and 8b based on the position and movement direction of the object T calculated by the calculation units 6a and 6b. The notification control unit 7 controls the pair of notification units 8a and 8b so that a degree of notification is changed between the pair of notification units 8a and 8b according to the movement of the object T in the case where the object T detected by one detection unit moves toward a detection range D2 of the other detection unit.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a notification device.

Conventionally, a blind spot monitor (BSM) or the like that transmits an object approaching the vehicle by transmitting, for example, a millimeter-wave radar around the vehicle and notifies the passengers on the vehicle of the approach of the object. Notification device has been put into practical use.
Here, since a commercial vehicle such as a truck has a wide range that the driver cannot directly see, it is required to detect an object in a wide range from the front to the side of the vehicle.

Therefore, as a technique for detecting an object in a wide range, for example, in Patent Document 1, a millimeter-wave radar is arranged at the front of the vehicle, and six cameras are arranged at the front, both sides, and the rear of the vehicle. The device is disclosed.

Japanese Unexamined Patent Publication No. 2011-063225

However, in the apparatus of Patent Document 1, when a plurality of notification units are arranged corresponding to a plurality of detection units and the object moves and is detected by different detection units, the corresponding notification units give a certain degree. Is notified of the approach of the object. Therefore, there is a possibility that the position of the moving object with respect to the vehicle cannot be quickly recognized.

An object of the present disclosure is to provide a notification device capable of quickly recognizing the position of a moving object with respect to a vehicle.

The notification devices according to the present disclosure are arranged apart from each other in the vehicle width direction, and are arranged corresponding to a pair of detection units for detecting an object approaching the vehicle and a pair of detection units, respectively, to the passenger. A pair of notification units that notify the approach of the object, a calculation unit that calculates the position and movement direction of the object based on the detection information of the pair of detection units, and a position and movement of the object calculated by the calculation unit. A notification control unit that controls a pair of notification units based on a direction is provided, and the notification control unit is used when an object detected by one detection unit moves toward the detection range of the other detection unit. The pair of notification units are controlled so that the degree of notification is changed between the pair of notification units according to the movement of the object.

According to the present disclosure, it is possible to quickly recognize the position of a moving object with respect to a vehicle.

It is a figure which shows the structure of the vehicle provided with the notification device which concerns on Embodiment 1 of this disclosure. It is a figure which shows the appearance that the speaker and the lamp are arranged. It is a figure which shows the state that an object moves obliquely with respect to a vehicle. It is a figure which shows the main part of the notification device which concerns on Embodiment 2. FIG.

Hereinafter, embodiments according to the present disclosure will be described with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 shows the configuration of a vehicle provided with the notification device according to the first embodiment of the present disclosure. The vehicle has a cab 1, a mounting portion 2, and a notification device 3. Examples of vehicles include commercial vehicles such as trucks.

The cab 1 is for passengers to board and is located at the front of the vehicle. Further, the cab 1 is formed with a length that fits in the front half of the vehicle in the front-rear direction of the vehicle.
The mounting portion 2 is for loading, for example, luggage, and is arranged behind the vehicle with respect to the cab 1. The mounting portion 2 is formed long in the front-rear direction of the vehicle so as to extend from the vicinity of the rear portion of the cab 1 to the rear portion of the vehicle.

The notification device 3 has a pair of front detection units 4a and 4b and a pair of side detection units 5a and 5b, and the calculation unit 6a is connected to the front detection unit 4a and the side detection unit 5a, and the front detection unit 3 is detected. The calculation unit 6b is connected to the unit 4b and the side detection unit 5b. Then, the calculation units 6a and 6b are connected to the notification units 8a and 8b via the notification control unit 7. The notification device 3 can be configured from, for example, a blind spot monitor.

The front detection units 4a and 4b are arranged apart from each other in the vehicle width direction, and detect objects approaching the vehicle, respectively. The forward detection units 4a and 4b can be composed of, for example, a millimeter wave radar that transmits and receives millimeter waves to detect an object.

The front detection unit 4a is arranged near the left side portion in the front portion of the cab 1. The front detection unit 4a has a detection surface facing the front of the vehicle, transmits and receives millimeter waves from this detection surface, and detects an object existing in the detection range D1 extending in front of the detection surface. Here, the front detection unit 4a is arranged so as to be inclined so that the detection surface faces the left side.

The front detection unit 4b is arranged near the right side portion in the front portion of the cab 1. The front detection unit 4b has a detection surface facing the front of the vehicle, transmits and receives millimeter waves from this detection surface, and detects an object existing in the detection range D2 extending in front of the detection surface. Here, the front detection unit 4b is arranged so as to be inclined so that the detection surface faces the right side.

The side detection units 5a and 5b are arranged apart from each other in the vehicle width direction, and detect objects approaching the vehicle, respectively. The side detection units 5a and 5b can be composed of, for example, a millimeter wave radar that transmits and receives millimeter waves to detect an object.

The side detection unit 5a is arranged near the left side portion at the rear portion of the cab 1. The side detection unit 5a has a detection surface facing the left side of the vehicle, transmits and receives millimeter waves from this detection surface, and detects an object existing in the detection range D3 extending in front of the detection surface.
The side detection unit 5b is arranged near the right side portion in the rear portion of the cab 1. The side detection unit 5b has a detection surface facing the right side of the vehicle, transmits and receives millimeter waves from this detection surface, and detects an object existing in the detection range D4 extending in front of the detection surface.

The front detection units 4a and 4b and the side detection units 5a and 5b may be arranged at the same height position or at different height positions. For example, the side detection units 5a and 5b can be arranged at a lower position than the front detection units 4a and 4b.

The calculation unit 6a is connected to the front detection unit 4a and the side detection unit 5a, respectively. The calculation unit 6a calculates the position and the moving direction of the object existing in the detection range D1 based on the detection information of the front detection unit 4a. Further, the calculation unit 6a calculates the position and the moving direction of the object existing in the detection range D3 based on the detection information of the side detection unit 5a.

The calculation unit 6b is connected to the front detection unit 4b and the side detection unit 5b, respectively. The calculation unit 6b calculates the position and the moving direction of the object existing in the detection range D2 based on the detection information of the front detection unit 4b. Further, the calculation unit 6b calculates the position and the moving direction of the object existing in the detection range D4 based on the detection information of the side detection unit 5b.

The notification control unit 7 controls the notification units 8a and 8b based on the position and the moving direction of the object calculated by the calculation units 6a and 6b. Here, in the notification control unit 7, when the object detected by the front detection unit 4a or the side detection unit 5a moves toward the detection range D2 of the front detection unit 4b or the detection range D4 of the side detection unit 5b. The notification units 8a and 8b are controlled so as to change the degree of notification between the notification unit 8a and the notification unit 8b according to the movement of the object T to the detection range D2 or D4. Further, the notification control unit 7 moves toward the detection range D1 of the front detection unit 4a or the detection range D3 of the side detection unit 5a when the object detected by the front detection unit 4b or the side detection unit 5b moves. Controls the notification units 8a and 8b so as to change the degree of notification between the notification unit 8a and the notification unit 8b according to the movement of the object T to the detection range D1 or D3.

For example, when the notification control unit 7 moves toward the detection range D2 of the front detection unit 4b or the detection range D4 of the side detection unit 5b, the object detected by the front detection unit 4a or the side detection unit 5a moves. Controls the notification unit 8a so as to reduce the degree of notification and controls the notification unit 8b so as to increase the degree of notification according to the movement of the object. Further, the notification control unit 7 moves toward the detection range D1 of the front detection unit 4a or the detection range D3 of the side detection unit 5a when the object detected by the front detection unit 4b or the side detection unit 5b moves. Controls the notification unit 8b so as to reduce the degree of notification and controls the notification unit 8a so as to increase the degree of notification according to the movement of the object.

The notification unit 8a notifies the passenger of the approach of the object, and is arranged corresponding to the front detection unit 4a and the side detection unit 5a. The notification unit 8a has a speaker 9a and a lamp 10a connected to the notification control unit 7, respectively.
The notification unit 8b notifies the passenger of the approach of the object, and is arranged corresponding to the front detection unit 4b and the side detection unit 5b. The notification unit 8b has a speaker 9b and a lamp 10b connected to the notification control unit 7, respectively.

As shown in FIG. 2, the speaker 9a and the lamp 10a are arranged along the left pillar in the vehicle interior of the cab 1 corresponding to the front detection unit 4a and the side detection unit 5a. On the other hand, the speaker 9b and the lamp 10b are arranged along the right pillar in the vehicle interior of the cab 1 corresponding to the front detection unit 4b and the side detection unit 5b.

The speakers 9a and 9b notify the passenger of the approach of the object by sound. Further, the lamps 10a and 10b notify the passenger of the approach of the object by light.

The functions of the calculation units 6a and 6b and the notification control unit 7 can also be realized by a computer program. For example, a computer reading device reads the program from a recording medium on which a program for realizing the functions of the calculation units 6a and 6b and the notification control unit 7 is recorded, and stores the program in the storage device. Then, the CPU copies the program stored in the storage device to the RAM, sequentially reads the instructions included in the program from the RAM, and executes the program to realize the functions of the calculation units 6a and 6b and the notification control unit 7. be able to.

Next, the operation of the first embodiment will be described.

First, as shown in FIG. 1, millimeter waves are transmitted and received from the front detection units 4a and 4b and the side detection units 5a and 5b to the detection ranges D1 to D4, respectively. When millimeter waves are received by the front detection unit 4a and the side detection unit 5a, the reception signal is output to the calculation unit 6a. On the other hand, when millimeter waves are received by the front detection unit 4b and the side detection unit 5b, the reception signal is output to the calculation unit 6b.

Here, when an object exists in the detection ranges D1 to D4, for example, when the object exists in the detection range D1, the millimeter wave reflected by the object is received by the forward detection unit 4a in a short time, and the object is received. The received signal including the detection information of is output to the calculation unit 6a.

Then, the calculation unit 6a acquires detection information from the received signals sequentially output from the front detection unit 4a and the side detection unit 5a, and based on the detection information, determines the positions of the objects existing in the detection ranges D1 and D3. calculate. Further, the calculation unit 6b acquires detection information from the received signals sequentially output from the front detection unit 4b and the side detection unit 5b, and based on the detection information, determines the positions of the objects existing in the detection ranges D2 and D4. calculate. The calculated position of the object is output from the calculation units 6a and 6b to the notification control unit 7.

Subsequently, the notification control unit 7 corresponds to the front detection unit 4a and the side detection unit 5a when the position of the object is calculated by the calculation unit 6a, that is, when the object is detected in the detection ranges D1 and D3. The notification unit 8a is controlled to notify the passenger of the approach of the object to the vehicle. On the other hand, the notification control unit 7 calculates the position of the object by the calculation unit 6b, that is, when the object is detected in the detection ranges D2 and D4, the notification control unit 7 notifies the front detection unit 4b and the side detection unit 5b. The unit 8b is controlled to notify the occupant of the approach of the object to the vehicle.
As a result, the passenger can recognize the approach of the object and stop the vehicle to prevent the object from colliding with the vehicle.

Further, the calculation units 6a and 6b track the position of the object and calculate the moving direction of the object. Then, the notification control unit 7 controls the notification units 8a and 8b so as to change the degree of notification between the notification units 8a and 8b according to the movement of the object calculated by the calculation units 6a and 6b.

For example, when the object T moving in the detection range D1 is detected by the front detection unit 4a, the calculation unit 6a detects the position P1 of the object T based on the received signal from the front detection unit 4a. Further, the calculation unit 6a tracks the position of the object T and calculates the moving direction of the object T. Subsequently, the calculation unit 6a calculates whether or not the object T moves from the position P1 toward the detection range D2 of the front detection unit 4b, and outputs the calculation result to the notification control unit 7.

When the calculation unit 6a calculates that the object T does not move toward the detection range D2 of the front detection unit 4b, the notification control unit 7 controls the notification unit 8a so as to notify the object T to a normal degree.

On the other hand, when the notification control unit 7 calculates in the calculation unit 6a that the object T moves toward the detection range D2 of the front detection unit 4b, the notification control unit 7 increases as the object T approaches the front detection unit 4a from the position P1. The notification unit 8a is controlled so that the degree of notification is gradually increased.
As a result, the passenger can quickly recognize that the object T approaches the vehicle from the left side of the vehicle. The notification control unit 7 can also control the notification unit 8a so as to notify the object T to a certain degree while the object T approaches the front detection unit 4a from the position P1.

Subsequently, when the object T reaches a predetermined region R set in front of the vehicle, that is, reaches the position P2, the notification unit 8a is controlled and the notification is started so that the degree of notification is maximized. Controls the notification unit 8b. At this time, the notification unit 8b is controlled so as to notify the notification unit 8a to a smaller degree than the notification unit 8a. The predetermined area R can be set in a range between the right side portion and the left side portion in front of the vehicle, for example, and the position P2 is set at a position corresponding to the left side portion of the vehicle.

When the object T passes through the position P2 and enters the area R, the notification control unit 7 controls the notification unit 8a so that the degree of notification is gradually reduced as the object T approaches the front detection unit 4b. The notification unit 8b is controlled so as to gradually increase the degree of notification. Subsequently, when the object T reaches the boundary of the region R, that is, when the position P3 is reached, the notification control unit 7 controls the notification unit 8a so as to stop the notification and maximizes the degree of notification. Controls the notification unit 8b.

The timing at which the object T reaches the position P3 may be calculated by the calculation unit 6b based on the detection information of the front detection unit 4b, and the detection position of the object T by the front detection unit 4a, for example, the position P2. And the speed may be calculated by the calculation unit 6a. Further, the notification control unit 7 determines that the object T has reached the position P3 when a preset time has elapsed since the object T reached the position P2, and notifies the notification to stop the notification. It is also possible to control the notification unit 8a so as to control the unit 8a and maximize the degree of notification.

In this way, when the object T detected by the front detection unit 4a moves toward the detection range D2 of the front detection unit 4b, the notification control unit 7 determines the degree of notification according to the movement of the object. The notification unit 8a is controlled so as to make it smaller, and the notification unit 8b is controlled so as to increase the degree of notification.
As a result, the passenger can quickly recognize how the object T moves in the area R set in front of the vehicle.

Subsequently, when the object T moves to the outside of the region R, that is, to the right side of the vehicle, the notification control unit 7 controls the notification unit 8b so that the degree of notification gradually decreases as the distance from the front detection unit 4b increases. ..
The moving position of the object T outside the region R can also be calculated by the calculation unit 6b based on the detection information of the front detection unit 4b. Further, the calculation unit 6a may calculate based on the detection position of the object T by the front detection unit 4a, for example, the position P2 and the speed, and calculate based on the passage of a preset time from the position P2. May be good.

As a result, the passenger can quickly recognize that the object T has left the right side of the vehicle.

Generally, when the object T detected by the front detection unit 4a moves toward the detection range D2 of the front detection unit 4b, the object T is detected by the front detection unit 4a and the front detection unit 4b. Therefore, the notification unit 8a and the notification unit 8b have been notified to a certain degree. Therefore, the passenger may not be able to quickly recognize the position of the moving object T with respect to the vehicle.

Therefore, as described above, when the object T detected by the front detection unit 4a moves toward the detection range D2 of the front detection unit 4b, the notification control unit 7 sets the notification unit 8a and the notification unit 8b. The notification units 8a and 8b are controlled so that the degree of notification is changed according to the movement of the object T. As a result, the passenger can intuitively grasp the movement of the object T and can quickly recognize the position of the moving object T with respect to the vehicle.

Here, as shown in FIG. 2, the notification control unit 7 can control the volume and the amount of light between the speaker 9a and the lamp 10a and the speaker 9b and the lamp 10b so as to change according to the movement of the object T. can. Further, the notification control unit 7 can also control between the lamp 10a and the lamp 10b so as to change the color of the light according to the movement of the object T.

Further, the notification control unit 7 can change the degree of notification between the notification unit 8a and the notification unit 8b at the same ratio. As a result, the passenger can smoothly recognize the position of the object T without any discomfort. Further, the notification control unit 7 can change the degree of notification between the notification unit 8a and the notification unit 8b at different ratios.
Further, it is preferable that the notification control unit 7 sets the maximum value of the degree of notification of the notification unit 8a and the notification unit 8b to the same value.

Further, in general, when three or more detection units are connected to one calculation unit 6a, the amount of calculation increases significantly. Therefore, the front detection unit 4a and the side detection unit 5a are connected to the calculation unit 6a and the calculation unit is calculated. The front detection unit 4b and the side detection unit 5b are connected to 6b. At this time, since the calculation unit 6a and the calculation unit 6b separately calculate the detection information of the front detection unit 4a and the side detection unit 5a and the detection information of the front detection unit 4b and the side detection unit 5b, the notification control unit 7 It may be difficult to control the notification units 8a and 8b in an integrated manner.

Therefore, when the calculation unit 6a calculates that the object T detected by the front detection unit 4a moves toward the detection range D2 of the front detection unit 4b, the notification control unit 7 causes the calculation result of the calculation unit 6a. Based on the above, the notification units 8a and 8b are controlled so that the degree of notification is changed between the notification unit 8a and the notification unit 8b according to the movement of the object T. As a result, the notification control unit 7 can control based on the calculation result of only the calculation unit 6a, so that the notification units 8a and 8b can be controlled in an integrated manner while suppressing the amount of calculation.

Here, the calculation units 6a and 6b can calculate the moving speed of the object in addition to the position and the moving direction of the object. Then, the notification control unit 7 sets the notification units 8a and 8b so that the faster the moving speed of the object T calculated by the calculation unit 6a is, the faster the degree of notification is changed between the notification unit 8a and the notification unit 8b. Can be controlled.
As a result, the passenger can more quickly recognize the position of the moving object T with respect to the vehicle.

Further, as shown in FIG. 3, when the calculation unit 6a calculates that the object T moves in the oblique direction N1 so as to approach the vehicle, the notification control unit 7 is orthogonal to the central axis of the vehicle. The notification units 8a and 8b can be controlled so that the degree of notification is changed faster between the notification unit 8a and the notification unit 8b as compared with the case where the object T moves in the direction N2. That is, the notification control unit 7 controls the notification unit 8a so that the degree of notification decreases rapidly as the object T moves in the oblique direction N1, and controls the notification unit 8b so that the degree of notification increases rapidly. do.
As a result, the passenger can quickly recognize that the object T is approaching the vehicle from the oblique direction N1.

Further, when the calculation unit 6a calculates that the object T moves in the oblique direction N3 so as to move away from the vehicle, the notification control unit 7 notifies the object T as compared with the case where the object T moves in the direction N2. The notification units 8a and 8b can be controlled so that the degree of notification is gradually changed between the unit 8a and the notification unit 8b. That is, the notification control unit 7 controls the notification unit 8a so as to gradually reduce the degree of notification as the object T moves in the oblique direction N3, and the notification unit 8b so as to gradually increase the degree of notification. To control.
As a result, the passenger can quickly recognize that the object T moves in the oblique direction N3 with respect to the vehicle.

The notification control unit 7 can similarly control when the object detected by the side detection unit 5a moves toward the detection range D4 of the side detection unit 5b. Further, the notification control unit 7 also performs the same when the object detected by the front detection unit 4b or the side detection unit 5b moves toward the detection ranges D1 and D3 of the front detection unit 4a or the side detection unit 5a. Can be controlled to.

According to the present embodiment, the notification control unit 7 sets the object detected by the front detection unit 4a or the side detection unit 5a into the detection range D2 of the front detection unit 4b or the detection range D4 of the side detection unit 5b. When moving toward, the notification units 8a and 8b are controlled so as to change the degree of notification between the notification unit 8a and the notification unit 8b according to the movement of the object to the detection range D2 or D4. Further, the notification control unit 7 moves toward the detection range D1 of the front detection unit 4a or the detection range D3 of the side detection unit 5a when the object detected by the front detection unit 4b or the side detection unit 5b moves. Controls the notification units 8a and 8b so as to change the degree of notification between the notification unit 8a and the notification unit 8b according to the movement of the object to the detection range D1 or D3. As a result, the degree of notification of the notification units 8a and 8b changes according to the movement of the object T, so that the passenger can intuitively grasp the movement of the object T and move with respect to the vehicle. The position of the object to be used can be quickly recognized.

(Embodiment 2)
Hereinafter, the second embodiment of the present disclosure will be described. Here, the differences from the above-described first embodiment will be mainly described, and the common reference numerals will be used for the common points with the above-described first embodiment, and detailed description thereof will be omitted.

In the above-described first embodiment, two calculation units 6a and 6b are arranged with respect to the front detection units 4a and 4b and the side detection units 5a and 5b, but the calculation unit for calculating the position and the moving direction of the object. It suffices if it can be arranged, and it is not limited to two.
For example, as shown in FIG. 4, the calculation unit 21 can be arranged in place of the calculation units 6a and 6b of the first embodiment.

The calculation unit 21 is connected to the front detection units 4a and 4b and the side detection units 5a and 5b, respectively. The calculation unit 21 calculates the position and the moving direction of the object existing in the detection ranges D1 to D4 based on the detection information of the front detection units 4a and 4b and the side detection units 5a and 5b.

In this way, since the calculation unit 21 calculates based on the detection information of the front detection units 4a and 4b and the side detection units 5a and 5b, the positions and moving directions of the objects existing in the detection ranges D1 to D4 are set high. It can be calculated accurately.

Subsequently, the notification control unit 7 controls the notification units 8a and 8b based on the position and the moving direction of the object calculated by the calculation unit 21. For example, when the notification control unit 7 moves toward the detection range D2 of the front detection unit 4b or the detection range D4 of the side detection unit 5b, the object detected by the front detection unit 4a or the side detection unit 5a moves. Controls the notification unit 8a so as to reduce the degree of notification and controls the notification unit 8b so as to increase the degree of notification according to the movement of the object. Similarly, in the notification control unit 7, when the object detected by the front detection unit 4b or the side detection unit 5b moves toward the detection range D1 of the front detection unit 4a or the detection range D3 of the side detection unit 5a. The notification unit 8b is controlled so as to reduce the degree of notification and the notification unit 8a is controlled so as to increase the degree of notification according to the movement of the object.
In this way, since the calculation unit 21 calculates the position and the moving direction of the object with high accuracy, the notification control unit 7 can control the notification units 8a and 8b with high accuracy according to the movement of the object.

According to the present embodiment, the calculation unit 21 calculates the position and the moving direction of the object with high accuracy based on the detection information of the front detection units 4a and 4b and the side detection units 5a and 5b. As a result, the notification control unit 7 can control the notification units 8a and 8b with high accuracy according to the movement of the object, and the passenger can more quickly recognize the position of the moving object T with respect to the vehicle. can do.

In the above-described first and second embodiments, the notification units 8a and 8b are arranged apart from each other in the vehicle width direction, but the front detection unit 4a, the side detection unit 5a, the front detection unit 4b, and the side detection unit 4a and the side detection unit 4b are separated from each other. It suffices as long as it is arranged corresponding to the part 5b, and the present invention is not limited to this.
For example, the notification units 8a and 8b may be arranged apart from each other in the vertical direction. However, since the notification units 8a and 8b can intuitively recognize the position of the object, it is preferable that the notification units 8a and 8b are arranged apart from each other in the vehicle width direction.

Further, in the above-described first and second embodiments, the front detection units 4a and 4b and the side detection units 5a and 5b are arranged, but a pair of detection units arranged apart from each other in the vehicle width direction may be arranged. , Not limited to this. For example, only the front detection units 4a and 4b may be arranged, or five or more detection units may be arranged.

Further, in the above-described first and second embodiments, the front detection units 4a and 4b and the side detection units 5a and 5b are arranged in the cab 1, but they may be arranged apart from each other in the vehicle width direction. It is not limited to this. For example, the side detection units 5a and 5b may be arranged at the rear part of the mounting unit 2 so as to detect the rear part of the vehicle. However, it is preferable to arrange the detection unit only in the cab 1 because the detection unit may interfere with the installation work if the detection unit is arranged in the installation unit 2.

Further, in the above-described first and second embodiments, the front detection units 4a and 4b and the side detection units 5a and 5b are composed of millimeter-wave radars, but it is sufficient if an object approaching the vehicle can be detected. It is not limited. For example, the front detection units 4a and 4b and the side detection units 5a and 5b can be composed of an ultrasonic sensor, a laser radar, a camera, and the like. However, it is preferable that the front detection units 4a and 4b and the side detection units 5a and 5b are composed of millimeter-wave radars from the viewpoint of straightness and the like.

Further, in the above-described first and second embodiments, the mounting portion 2 is arranged for loading luggage, but it may be arranged behind the vehicle with respect to the cab 1 and is limited to this. It is not something that can be done.

In addition, the above embodiments are merely examples of embodiment of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. be. That is, the present invention can be implemented in various forms without departing from its gist or its main features. For example, the disclosure of the shape, number, and the like of each part described in the above embodiment is merely an example, and can be appropriately modified and implemented.

The notification device according to the present disclosure can be used as a device that detects an object approaching the vehicle and notifies the passenger of the approach of the object.

1 Cab 2 Mounting unit 3 Notification device 4a, 4b Front detection unit 5a, 5b Side detection unit 6a, 6b, 21 Calculation unit 7 Notification control unit 8a, 8b Notification unit 9a, 9b Speaker 10a, 10b Lamps D1 to D4 detection Range T Object P1 to P3 Position R Predetermined area N1 to N3 direction

Claims (5)

A pair of detectors that are arranged apart from each other in the vehicle width direction and detect objects approaching the vehicle, respectively.
A pair of notification units, which are arranged corresponding to the pair of detection units and notify the passenger of the approach of the object,
A calculation unit that calculates the position and moving direction of the object based on the detection information of the pair of detection units.
A notification control unit that controls the pair of notification units based on the position and moving direction of the object calculated by the calculation unit is provided.
When the object detected by one detection unit moves toward the detection range of the other detection unit, the notification control unit determines the degree of notification between the pair of notification units. A notification device that controls the pair of notification units so as to change according to movement. The notification control unit controls one notification unit corresponding to the one detection unit so as to reduce the degree of notification according to the movement of the object, and the other so as to increase the degree of notification. The notification device according to claim 1, wherein the other notification unit corresponding to the detection unit is controlled. The calculation unit calculates the moving speed of the object,
The notification device according to claim 1 or 2, wherein the notification control unit controls the pair of notification units so that the faster the moving speed of the object is, the faster the degree of notification is changed between the pair of notification units. When the object moves diagonally so as to approach the vehicle, the notification control unit performs the pair of notifications as compared with the case where the object moves in a direction orthogonal to the central axis of the vehicle. The notification device according to any one of claims 1 to 3, wherein the pair of notification units are controlled so that the degree of notification is rapidly changed between the units. When the object moves diagonally away from the vehicle, the notification control unit performs the pair of notifications as compared with the case where the object moves in a direction orthogonal to the central axis of the vehicle. The notification device according to any one of claims 1 to 4, wherein the pair of notification units are controlled so that the degree of notification is gradually changed between the units.

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