JP4975841B2 - Mobile object approach notification system and method - Google Patents

Description

  The present application discloses a moving body approach notification system and method for notifying a passerby of the approach of a moving body such as an electric vehicle.

  For example, Non-Patent Document 1 discloses a device that supports safe driving.

http://www.optex.co.jp/drive-recorder/safemeter/index.html

  The present application is made from the background described above, and provides a moving body approach notification system and method for notifying other moving bodies and passersby of the approach of a moving body with low noise generated during movement.

  In one embodiment of the present disclosure, an approach signal including approach information indicating an approach of the electric vehicle is determined in advance when the value of a sound generated during movement is disposed in an electric vehicle having a predetermined value or less. An approach signal transmitting device that transmits power with an electric power, and an approach notifying device disposed in a moving body other than the electric vehicle, wherein the sent approach signal is received and approached from the received first approach signal An approach notifying device having receiving means for obtaining information and a notifying unit for notifying that the electric vehicle has approached when the approach signal is obtained is configured.

[summary]
In the above-described embodiment of the present disclosure, the approach signal transmission device is provided in an electric vehicle that has low noise during movement and is hardly noticed by passers-by.
The approach notification device transmits an approach signal including approach information indicating the approach of the electric vehicle, for example, with power handled as a weak radio wave.
The approach notification device is incorporated in, for example, a wristwatch or a mobile phone, or carried by a passerby as an independent device.
In the approach notification device, the receiving means receives an approach signal from the electric vehicle and obtains approach information from the approach signal, and the notification unit indicates that the electric vehicle has approached when the approach signal is obtained. , A sound, light or vibration, or a combination thereof, is notified to a passerby carrying this approach notification device.

The technical advantages of the present disclosure and other technical advantages will become apparent to those skilled in the art upon reading the detailed description of the embodiments shown in the drawings.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
The drawings referred to in this specification should be understood as not being drawn to scale unless specifically noted.

The embodiments of the present disclosure will be best understood with reference to the following description, taken in conjunction with the drawings, for its construction and operation.
It is a figure which shows the structural example of the electric vehicle approach notification system concerning this application. It is a figure which shows the structure of the approach signal transmission apparatus shown in FIG. It is a figure which illustrates the data which the 1st data generation part shown in FIG. 2 generate | occur | produces. It is a figure which shows the structure of the 1st approach notification apparatus shown in FIG. It is a figure explaining operation | movement of the 1st electric vehicle approach notification system shown in FIG. It is a figure which shows the structure of the 2nd approach signal transmission apparatus shown in FIG. It is a figure which illustrates the data which the 2nd data generation part shown in Drawing 6 generates. It is a figure which shows the structure of the 2nd approach notification apparatus shown in FIG. It is a figure explaining operation | movement of the 2nd electric vehicle approach notification system shown in FIG.

Hereinafter, embodiments of the present disclosure will be described in detail.
Embodiments of the present disclosure are illustrated in the accompanying drawings.
While the present disclosure will be described in connection with an embodiment, those skilled in the art will appreciate that this embodiment is not intended to limit the present disclosure to that disclosure.
On the contrary, this disclosure is intended to cover alternatives, modifications and equivalents that may be included within the spirit of this disclosure and the scope of the claims.
The description of the present disclosure will be made specifically and in detail so that the present disclosure can be fully understood.
However, it will be apparent to those skilled in the art that the present disclosure cannot be practiced without these specific details and with all of the details described.

In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present disclosure.
It should be noted, however, that all of these and similar terms are to be associated with the appropriate physical quantities and are merely convenient labels attached to these quantities.
As will be apparent from the following discussion, discussions using terms such as “generate data,” “transmit,” and “receive” throughout the present disclosure, unless otherwise specified, It is understood to refer to the action and process of hardware resources such as circuits, CPUs and DSPs (Digital Signal Processors).

[First embodiment]
Hereinafter, the first embodiment of the present application will be described.
FIG. 1 is a diagram illustrating a configuration example of an electric vehicle approach notification system 1 (4) according to the present application.
As shown in FIG. 1, the first electric vehicle approach notification system 1 includes a first electric vehicle 10 attached to n (an integer of n ≧ 1, where n does not always indicate the same number). And the approach notification devices 3-1 and 3-2 incorporated in a wristwatch or a mobile phone carried by each of n passersby (users) (hereinafter, there may be a plurality of approaches) When the notification devices 3-1, 3-2, etc. are collectively described, they may simply be abbreviated as the approach notification device 3).
The electric vehicle approach notification system 1 uses these components to notify a passerby carrying the approach notification device 3 of the approach of the electric vehicle 10 and call attention.

The electric vehicle 10 is driven by rotating the motor 14 with the electric power stored in the battery 12 to obtain power, and the noise during driving is significantly smaller than that of the gasoline vehicle. It is difficult to notice a passerby who does not carry the device 3.
In general, the noise of a quiet gasoline vehicle is about 60 dB, whereas the noise of the electric vehicle 10 is, for example, 50 dB or less.
In this way, the approach signal transmission device 2 of the electric vehicle approach notification system 1 can thus approach even if an object such as a passerby or a building approaches the object, such as a sound value generated during movement, that is not more than a predetermined value. Can be widely applied to moving objects that are difficult to notice.
Further, the approach notification device 3 can be configured as an independent device without being incorporated in another device such as a watch.

FIG. 2 is a diagram illustrating a configuration of the approach signal transmission device 2 illustrated in FIG. 1.
FIG. 3 is a diagram illustrating data generated by the first data generation unit 200 illustrated in FIG.
As shown in FIG. 2, the approach signal transmission apparatus 2 includes a first data generation unit 200, a modulation unit 202, an oscillation unit 204, a transmission unit 206, and an antenna 210, and the transmission unit 206 and the antenna 210 as necessary. Attenuator 208 is inserted between them (hereinafter, substantially the same components are denoted by the same reference numerals).
The approach signal transmitting device 2 can transmit an approach signal transmitted in the form of a radio wave, receive the approach signal, and demodulate the approach signal data (FIG. 3) included in the received approach signal by using these components. The approach notification device 3 is notified of the approach of the electric vehicle 10.
In the approach signal transmitting device 2, the data generating unit 200 includes a synchronization signal and approach signal data indicating the approach of the electric vehicle 10, as shown in FIG. Generated data that may include the device identifier (which may be omitted) is generated and output to the modulation unit 202.

The modulation unit 202 performs modulation for transmitting the data (FIG. 3) input from the data generation unit 200 based on the carrier signal input from the oscillation unit 204 using, for example, the PSK modulation method. The approach signal obtained as a result of the modulation is output to the transmission unit 206.
The transmitting unit 206 appropriately converts the frequency of the approach signal input from the oscillating unit 204, is treated as, for example, a weak radio wave by law, and is amplified to power that anyone can use freely, via the antenna 210. Send.

When the power of the approach signal output from the transmission unit 206 becomes equal to or greater than a predetermined value, an attenuator 208 is appropriately inserted between the transmission unit 206 and the antenna 210, and the approach signal is the approach signal. The power is attenuated to a power suitable for the use of the transmitter 2.
The frequency of the approach signal is, for example, 40 kHz or 60 kHz used for a radio timepiece, or 800 MHz or 1.5 GHz used for a mobile phone.
It is also possible to configure the approach signal transmitting device 2 to transmit an approach signal having a frequency other than the above.

FIG. 4 is a diagram illustrating a configuration of the first approach notification device 3 illustrated in FIG. 1.
As illustrated in FIG. 4, the first approach notification device 3 includes an antenna 210, a reception unit 300, a demodulation unit 302, a first determination unit 304, and a notification output unit 306.
The approach notification device 3 receives the approach signal transmitted by the approach signal transmission device 2 by these components, and when the approach signal data (FIG. 3) is detected from the received approach signal, sound, light and vibration or By these combinations, a passerby (user) is notified of the approach of the electric vehicle 10.
The receiving unit 300 receives the approach signal from the approach signal transmitting device 2 via the antenna 210, performs frequency conversion and amplification as appropriate, and outputs the result to the demodulation unit 302.

The demodulator 302 demodulates the approach signal input from the receiver 300 and outputs the demodulated signal to the determination unit 304.
The determination unit 304 processes the data included in the demodulated approach signal, synchronizes using the synchronization data (FIG. 3), and extracts the approach signal data (and the device identifier).
Furthermore, when the approach signal data is normally obtained from the data included in the approach signal input from the demodulator 302, the determination unit 304 controls the notification unit 306 to control the electric vehicle 10 for the passerby (user). Notify approaching.
The notification output unit 306 includes, for example, a buzzer having an output frequency of 3 kHz and a volume of about 70 dB, an LED, a vibrator, and the like. Notify passersby (users) by combination.

FIG. 5 is a diagram for explaining the operation of the first electric vehicle approach notification system 1 shown in FIG.
As shown in FIG. 5, when the distance between the electric vehicle 10 and a passerby (user) is within a range in which the approach signal reaches and the approach signal data is normally obtained from the approach signal, that is, the approach signal. When the distance is shorter than the reach distance, the approach notification device 3 notifies the approach of the electric vehicle 10 to the passerby (user).
On the other hand, when the distance between the electric vehicle 10 and the passerby (user) is not within the range in which the approach signal reaches and the approach signal data is normally obtained from the approach signal, the approach notification device 3 The approach of the electric vehicle 10 to the user) is not notified.
The approach signal arrival distance described above can be set to an appropriate length for the electric vehicle 10 and a passerby (user) by adjusting the transmission unit 206 or the attenuator 208.

In FIG. 1, in the electric vehicle approach notification system 1, the case where the electric vehicle 10 has only the approach signal transmission device 2 and the passerby (user) carries only the approach notification device 3 is shown. The electric vehicle approach notification system 1 and a passerby (user) may have both the approach signal transmission device 2 and the approach notification device 3.
In this case, the approach signal includes the device identifier shown in FIG. 3, and the determination unit 304 includes the device identifier and the approach signal data of the other approach notification device 3 in the approach signal. Only when it is determined that there is a notification, the notification output unit 306 is controlled to notify the passerby.
The approach notification device 3 can also be incorporated in a portable music player carried by a passerby (user). In this case, the access notification device 3 is electrically connected via earphones / headphones worn by the passerby (user) on the ear. The approach of the automobile 10 may be notified.
Further, the approach notification device 3 can be incorporated into various items such as a vine and a hat of a passerby (user).

[Second Embodiment]
Hereinafter, a second embodiment of the present application will be described.
As shown in FIG. 1, a second electric vehicle approach notification system 4 shown as the second embodiment of the present application uses a first approach signal transmission device 2 of the electric vehicle approach notification system 1 as a second approach signal transmission. It replaces with the device 5 and adopts a configuration in which the first approach notification device 3 is replaced with the second approach notification device 6.
The second electric vehicle approach notification system 4 notifies the passersby (users) of the approach of the electric vehicle 10 by using these components, as in the first electric vehicle approach notification system 1.

FIG. 6 is a diagram illustrating a configuration of the second approach signal transmission device 5 illustrated in FIG. 1.
As shown in FIG. 6, the second approach signal transmission device 5 replaces the first data generation unit 200 with a second data generation unit 502, and a position data generation unit 500 is placed in front of the data generation unit 502. Adopted the configuration.
In the first approach signal transmission device 5, the position data generation unit 500 includes a GPS (Global Positioning System) device, an integral position detection device, or a combination thereof, and the position of the electric vehicle 10, for example, the electric vehicle 10 exists. The position data indicating the position of the detected electric vehicle 10 is output to the data generation unit 502.

FIG. 7 is a diagram illustrating data generated by the second data generation unit 502 illustrated in FIG. 6.
As shown in FIG. 7, the second data generation unit 502 generates data including synchronization data, device identifiers, approach signal data, position data input from the position data generation unit 500, and other additional data. And output to the modulation unit 202.
Accordingly, the approach data transmitted by the second approach signal transmitter 5 includes each data shown in FIG.

The device identifier included in the data generated by the data generation unit 502 can be omitted when there is no use.
Further, when the electric vehicle 10 includes a car navigation device, the position data generation unit 500 can be substituted by a position detection unit of the car navigation device.

FIG. 8 is a diagram showing the configuration of the second proximity notification device 6 shown in FIG.
As illustrated in FIG. 8, the second proximity notification device 6 replaces the determination unit 304 of the first approach signal transmission device 2 with the second determination unit 602 and connects the position detection unit 600 to the determination unit 602. Adopted the configuration.
The position detection unit 600 detects the position of the second proximity notification device 6 and determines the position data indicating the position of the proximity notification device 6 in the same manner as the position data generation unit 500 of the second approach signal transmission device 5. To the unit 602.

The determination unit 602 determines the proximity notification device 3 (user) and the electric vehicle 10 from the position data of the proximity notification device 3 detected by the position detection unit 600 and the position data of the electric vehicle 10 obtained from the approach signal. Calculate the distance between them.
The determination unit 602 obtains approach signal data from the received approach signal, and the calculated distance between the proximity notification device 3 and the electric vehicle 10 is equal to or less than a predetermined length (for example, 20 m; notification execution distance). Sometimes, the notification output unit 306 is controlled to notify the passerby (user) of the approach of the electric vehicle 10, and in other cases, the approach of the electric vehicle 10 is not notified.

FIG. 9 is a diagram for explaining the operation of the second electric vehicle approach notification system 4 shown in FIG.
In the second electric vehicle approach notification system 4, when the distance between the approach notification device 3 and the electric vehicle 10 is longer than the approach signal arrival distance, the approach notification device 3 is connected to the passerby (user) by the electric vehicle 10. No notification of approach.
In addition, even when the distance between the approach notification device 3 and the electric vehicle 10 is shorter than the approach signal arrival distance, when the distance is longer than the execution notification distance, the approach notification device 3 is an electric vehicle for a passerby (user). Do not give 10 approach notifications.
On the other hand, when the distance between the approach notification device 3 and the electric vehicle 10 is shorter than the approach signal arrival distance and the execution notification distance, the approach notification device 3 notifies the passerby (user) of the approach of the electric vehicle 10.

The above embodiments have been presented for purposes of illustration and description, and are not exhaustive of all embodiments disclosed herein.
Further, the above embodiment is not intended to limit the technical scope of the disclosure of the present application to the disclosure content thereof, and can be variously changed and modified in light of the disclosure content.
Further, since the above embodiments have been selected and described so as to best explain the principle of the present disclosure and its practical application, those skilled in the art will understand the present disclosure and the The embodiment can be utilized with various modifications to optimize it for all possible practical applications.
In addition, the technical scope of the present disclosure is intended to be defined by the description and equivalents.

  The present disclosure can be used to notify the approach of a moving object.

1, 4 ... Electric vehicle approach notification system,
2, 5 ... Approach signal transmitter,
200, 502 ... data generator,
202... Modulation unit,
204... Oscillator
206: Transmitter,
208 ... Attenuator,
500 ... position data generation unit,
3, 6 ... approach notification device,
300 ... receiving part,
302 ... demodulator,
304, 602... Determination unit,
600 ... position detector,

Claims (3)

A first approach signal transmitting device disposed in an electric vehicle having a sound value generated during movement of a predetermined value or less, and a second approach signal transmitting device disposed in a moving body other than the electric vehicle A moving body approach notification system comprising: a first approach notification device disposed in the electric vehicle; and a second approach notification device disposed in the mobile body,
The first approach signal transmission device includes:
A first position detector for detecting the position of the electric vehicle on which the first approach signal transmitter is disposed;
A first approach signal including position data indicating the position of the detected electric vehicle, approach signal data indicating the approach of the electric vehicle, and a device identifier for uniquely identifying the first approach signal transmitting device; A first approach signal transmitter for transmitting at a predetermined power, and
The second approach signal transmission device includes:
A second position detecting unit for detecting the position of the moving body on which the second approach signal transmitting device is disposed;
A second approach signal including position data indicating the position of the detected moving object, approach signal data indicating the approach of the moving object, and a device identifier for uniquely identifying the second approach signal transmitting device; A second approach signal transmitter for transmitting,
The first approach notification device includes:
A third position detector for detecting the position of the electric vehicle on which the first approach notification device is disposed ;
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. A first receiver for obtaining an identifier;
Only when the approach signal is obtained and the obtained device identifier is different from the device identifier of the first approach signal transmitting device provided in the electric vehicle in which the first approach notification device is provided. When the distance between the position of the moving object indicated by the obtained position data and the position of the electric vehicle detected by the third position detection unit is equal to or less than a predetermined length, the moving object A first notification unit for notifying that the vehicle is approaching,
The second approach notification device includes:
A fourth position detection unit for detecting the position of the moving body provided with the second approach notification device ;
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. A second receiving unit for obtaining an identifier;
Only when the approach signal is obtained and the obtained device identifier is different from the device identifier of the second approach signal transmitting device provided in the moving object in which the second approach notification device is provided. When the distance between the position of the electric vehicle indicated by the obtained position data and the position of the moving body detected by the fourth position detector is equal to or less than a predetermined length, the electric vehicle A moving body approach notification system comprising: a second notification unit that notifies that the vehicle is approaching. A first approach signal transmitting device disposed in an electric vehicle having a sound value generated during movement of a predetermined value or less, and a second approach signal transmitting device disposed in a moving body other than the electric vehicle And a moving body approach notifying method in a moving body approach notifying system having a first approach notifying device disposed in the electric vehicle and a second approach notifying device disposed in the moving body,
The first approach signal transmitter is
Detecting the position of the electric vehicle on which the first approach signal transmission device is disposed,
A first approach signal including position data indicating the position of the detected electric vehicle, approach signal data indicating the approach of the electric vehicle, and a device identifier for uniquely identifying the first approach signal transmitting device; , Transmit at a predetermined power,
The second approach signal transmitter is
Detecting the position of the moving body on which the second approach signal transmitting device is disposed;
A second approach signal including position data indicating the position of the detected moving object, approach signal data indicating the approach of the moving object, and a device identifier for uniquely identifying the second approach signal transmitting device; Send
The first approach notification device includes:
Detecting the position of the electric vehicle the first proximity notification device is disposed,
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. Get the identifier and
Only when the approach signal is obtained and the obtained device identifier is different from the device identifier of the first approach signal transmitting device provided in the electric vehicle in which the first approach notification device is provided. When the distance between the position of the moving body indicated by the obtained position data and the position of the detected electric vehicle is equal to or shorter than a predetermined length, the mobile body is informed that it has approached,
The second approach notification device is
The second approach notification device detects the position of the movable body which is arranged,
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. Get the identifier and
Only when the approach signal is obtained and the obtained device identifier is different from the device identifier of the second approach signal transmitting device provided in the moving object in which the second approach notification device is provided. When the distance between the position of the electric vehicle indicated by the obtained position data and the position of the detected moving body is equal to or less than a predetermined length, the electric vehicle is notified of the approach. Body approach notification method. A first approach signal transmitting device disposed in an electric vehicle having a sound value generated during movement of a predetermined value or less, and a second approach signal transmitting device disposed in a moving body other than the electric vehicle An approach notifying device disposed on the moving body in a moving body approach notifying system having an approach notifying device disposed on the electric vehicle and an approach notifying device disposed on the moving body,
The first approach signal transmission device includes:
A first position detector for detecting the position of the electric vehicle on which the first approach signal transmitter is disposed;
A first approach signal including position data indicating the position of the detected electric vehicle, approach signal data indicating the approach of the electric vehicle, and a device identifier for uniquely identifying the first approach signal transmitting device; A first approach signal transmitter for transmitting at a predetermined power, and
The second approach signal transmission device includes:
A second position detecting unit for detecting the position of the moving body on which the second approach signal transmitting device is disposed;
A second approach signal including position data indicating the position of the detected moving object, approach signal data indicating the approach of the moving object, and a device identifier for uniquely identifying the second approach signal transmitting device; A second approach signal transmitter for transmitting,
The approach notification device disposed in the electric vehicle is:
A third position detector for detecting the position of the electric vehicle ;
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. A first receiver for obtaining an identifier;
The approach signal is obtained only when the obtained device identifier is different from the device identifier of the first approach signal transmission device provided in the electric vehicle in which the access notification device is provided. The moving body has approached when the distance between the position of the moving body indicated by the position data and the position of the electric vehicle detected by the third position detecting unit is equal to or less than a predetermined length. A first notification unit for notifying
The approach notification device disposed on the moving body is:
A fourth position detector for detecting the position of the moving body ;
The first approach signal and the second approach signal that are sent out are received, and the position data , the approach signal data, and the device are received from the received first approach signal and the second approach signal, respectively. A second receiving unit for obtaining an identifier;
The access signal is obtained only when the access signal is obtained and the obtained device identifier is different from the device identifier of the second access signal transmission device provided in the moving object in which the access notification device is provided. That the electric vehicle has approached when the distance between the position of the electric vehicle indicated by the position data and the position of the moving body detected by the fourth position detector is equal to or less than a predetermined length. An approach notification device disposed on the moving body.

Images