JP2000099886A - Radio wave traffic sign system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio wave traffic sign system capable of alerting sufficient caution without being influenced by weather by a passenger of a vehicle. SOLUTION: A radio wave is transmitted from an on-vehicle terminal of an entering vehicle A to arrive an installing position of a radio wave mirror 3, the transmitted radio wave is received by the radio wave mirror 3 and the radio wave is transmitted to an oncoming vehicle B via the radio wave mirror 3. The radio wave from the radio wave mirror 3 is received by the oncoming vehicle B and existence of the entering vehicle A is displayed on a display of an on-vehicle terminal of the oncoming vehicle B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave traffic sign system, and more particularly to a radio wave mirror.

[0002]

2. Description of the Related Art Conventionally, traffic signs have been arranged along roads to call for traffic regulation and attention. In particular, a curve mirror is installed on a sharp curve so that dangerous information such as the presence of an oncoming vehicle with respect to the traveling vehicle can be recognized.

[0003]

However, the above-mentioned conventional method has a problem that the traffic sign becomes difficult to see under bad weather, which hinders safe driving. In particular, in the case of fog or snowstorm, visibility may be poor, and it may be difficult to visually recognize a traffic sign. SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above problems and to provide a radio wave traffic sign system capable of prompting a passenger of a vehicle to be sufficiently alerted without being influenced by the weather.

[0004]

In order to achieve the above object, the present invention provides: [1] In a radio wave traffic sign system, a radio wave traffic sign disposed at a desired position and a radio wave traffic sign are provided. And a vehicle having an in-vehicle terminal capable of transmitting and receiving a radio wave, so that the existence of the own vehicle with respect to the other vehicle can be recognized by the radio wave via the radio wave traffic sign.

[2] In the radio traffic sign system according to the above [1], the radio traffic sign is a radio mirror. [3] The radio wave traffic sign system according to the above [2], wherein the radio wave mirror is arranged at a sharp curve point or a dangerous zone. [4] In the radio traffic sign system according to the above [1], the radio traffic sign is such that a radio sign function is added to a visual sign.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic diagram of a radio wave traffic sign system showing an embodiment of the present invention, FIG. 2 is a perspective view showing an arrangement of a vehicle-mounted terminal mounted on the vehicle,
FIG. 3 is a block diagram of the on-board terminal, FIG. 4 is a block diagram of a mirror as a radio wave traffic sign, and FIG. 5 is an operation flowchart of the radio wave traffic sign system.

In this embodiment, an ordinary road sign, a curved mirror or the like is provided with a radio beacon function to provide information other than regulation / danger information to a vehicle. As shown in FIG. 1, a center line 2 is provided on a sharply curved road 1, and a radio wave mirror 3 as a radio traffic sign is arranged on a curve of the road 1 for an approaching vehicle A.

Here, as shown in FIGS. 2 and 3, the vehicle 6 has an on-board terminal 10 mounted thereon.
Is a transmitting / receiving antenna 11, an amplifier 12 for amplifying a received beacon, a demodulator 13 for demodulating the amplified beacon, a microcontroller 14 for reading the demodulated signal wave, and a microcontroller 14
A notification device 15 (display device 15A, audio device 15B) is provided.

The microcontroller 14 has a reader / writer unit 18 for reading data from an IC card (not shown) and a power supply unit 19. In addition, 16 is a modulator for transmitting a radio wave from the vehicle-mounted terminal 10, and 17 is an amplifier for amplifying the transmitted radio wave. Next, a configuration of a radio wave mirror according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 4, a radio mirror (microchip) 20 is provided with a receiving antenna (coil antenna) 21, a demodulator 22, an SP / SP, arranged to receive radio waves from the approaching vehicle A with good directivity. A PS conversion unit 23, a main control unit 24, an oscillator 26, a modulator 27, an amplifier 28, and a transmission antenna (coil antenna) 29 arranged to transmit radio waves to the oncoming vehicle B with good directivity are provided.

Therefore, when a radio wave from the transmitting / receiving antenna 11 of the on-board terminal 10 of the approaching vehicle A is received by the receiving antenna (coil antenna) 21 of the radio wave mirror 20, it is amplified, controlled, modulated, and then amplified again. Thus, a radio wave is transmitted from the transmission antenna (coil antenna) 29 to the oncoming vehicle B. Then, in the oncoming vehicle B, the radio wave is received by the transmitting / receiving antenna 11 of the on-board terminal 10,
The presence of the approaching vehicle A can be recognized because it is processed and notified by the notification device 15. Similarly, the approaching vehicle A can recognize the presence of the oncoming vehicle B by receiving the radio wave from the on-board terminal 10 of the oncoming vehicle B via the radio wave mirror 20.

The operation of the radio sign according to the present invention will now be described with reference to FIG.
This will be described with reference to FIG. (1) First, a radio wave is transmitted from the in-vehicle terminal 10 of the approaching vehicle A arriving at the installation location of the radio traffic sign (radio wave mirror) (step S1). (2) When the transmission radio wave is received by the radio traffic sign (radio wave mirror) (step S2), the radio wave is transmitted to the opposite road direction (oncoming vehicle side) via the radio traffic sign (step S3).

(3) Then, the oncoming vehicle B receives the radio wave from the radio traffic sign (step S4), and can display the presence of the approaching vehicle A on the display device 15A of the on-board terminal 10 of the oncoming vehicle. (Step S5). Similarly, the approaching vehicle A can also recognize the presence of the oncoming vehicle B. In addition, since the traffic sign can be added with the radio wave mirror function of the present invention while leaving the conventional sign by visual recognition as it is, together with the sign by visual recognition, the passengers of the vehicle can be more securely alerted. be able to.

As described above, according to the present invention, by using the radio traffic sign, it is possible to ensure the existence between the approaching vehicle and the oncoming vehicle in a curve or a dangerous zone, thereby contributing to the safe operation of the vehicle. It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0015]

As described above, according to the present invention, the following effects can be obtained. (A) In the operation of the vehicle, the passenger of the vehicle receives the information by radio wave traffic signs regardless of the weather,
Safe driving can be performed.

(B) Particularly, in the case of a radio wave mirror, information is transmitted even in the case of poor visibility (fog, snowstorm, etc.) in a sharp curve or in a dangerous zone, which can contribute to safe driving. (C) Further, the radio wave mirror of the present invention and a normal traffic sign /
By having the two functions of the curved mirror (the information from the radio wave mirror and the original visual information), the attention of passengers of the vehicle can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a radio traffic sign system showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an arrangement of an in-vehicle terminal mounted on a vehicle according to the embodiment of the present invention.

FIG. 3 is a block diagram of an in-vehicle terminal mounted on a vehicle, showing an embodiment of the present invention.

FIG. 4 is a block diagram of a mirror as a radio traffic sign showing an embodiment of the present invention.

FIG. 5 is an operation flowchart of the radio wave traffic sign system according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 road 2 central line 3,20 radio mirror 6 vehicle 10 on-board terminal 11 transmitting / receiving antenna 12,17,28 amplifier 13,22 demodulator 14 microcontroller 15 notification device 15A display device 15B audio device 16,27 modulator 18 reader / writer Unit 19 Power supply unit 21 Receiving antenna (coil antenna) 23 SP / PS converter 24 Main control unit 26 Oscillator 29 Transmitting antenna (coil antenna) A Approaching vehicle B Oncoming vehicle

Claims (4)

[Claims] 1. A vehicle comprising: (a) a radio wave traffic sign disposed at a desired position; and (b) a vehicle having an on-board terminal capable of transmitting and receiving radio waves to and from the radio wave traffic sign; A radio wave traffic sign system, wherein the presence of the own vehicle with respect to the other vehicle can be recognized by radio waves via the radio wave traffic sign. 2. The radio traffic sign system according to claim 1, wherein said radio traffic sign is a radio mirror. 3. The radio wave traffic sign system according to claim 2, wherein the radio wave mirror is arranged at a sharp curve point or a dangerous zone. 4. The radio traffic sign system according to claim 1, wherein said radio traffic sign is obtained by adding a radio sign function to a visual sign.