JPS62247500A - Sign information apparatus for road - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to sign information 5 related to safe driving technology on roads.
The present invention relates to a road sign information device, and in particular, it is intended to provide a road sign information device that allows a driver of a car to reliably recognize road signs.

Traditionally, roads have been equipped with road signs that display a wide variety of regulations or precautions for vehicle operation, such as intersection signs, railroad crossing signs, road width change signs, speed limit signs, or warning information signs. Based on this information, the driver operates the vehicle to ensure safe operation on the road.

[Problems to be solved by the invention] However, most of these road signs appeal to the driver's eyesight, and in addition, these road signs may be installed in poor locations, or there may be a large number of them. It is not desirable as a means of transmitting information, especially for vehicles traveling at high speeds, as it may be difficult to identify the signs due to simultaneous markings, and there are problems such as oversight or incorrect identification. had.

This invention has been made in view of the above problems, and it is an object of the present invention to arouse the driver's attention so that he or she can more reliably recognize road signs, and to display the road signs to the driver as necessary. At the same time, Unsei fK buff kyoi 1-
) - The purpose of this invention is to provide a sign information device for the Masutto λ1-61 road.

Means for Solving Problems] Road sign information system of this invention! A weak radio wave transmitter that emits weak radio waves of a specific frequency from a transmitting antenna that is buried or erected on the road near the road sign corresponding to the road sign, and a weak radio wave transmitter that is installed on the body of a car or a part thereof. and a weak radio wave reception notification means that audibly or visually announces the presence of a road sign to a motor vehicle driver using radio waves of a specific frequency received from a receiving antenna for the above-mentioned transmitted radio waves. be.

[Operation] The road sign information device having the above configuration is used, for example, for intersection signs, railroad crossing signs, and road width change signs.

A transmitting antenna is installed on the road surface in front of various road signs such as speed limit display signs or caution information display signs, and the transmitter constantly transmits weak radio waves of a specific frequency.The receiving antenna of a car driving on the road When the signal from the transmitting antenna is received, a "warning sound" is emitted through the reception notification means to notify the driver of the vehicle that there is some kind of road sign ahead, and to draw attention to it.

[Embodiment 1] An embodiment of the road sign information device of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the road sign information device of the present invention, where A is a roadside device and B is a vehicle side device. The roadside device A transmits a weak radio wave of a specific frequency (to the extent that it does not interfere with radio waves from other nearby transmitting antennas 1) from a transmitting antenna 1 installed on the road surface in front of the road sign 11a. It consists of a weak radio wave transmitter 2 for road sign a.
It constantly transmits a unique signal set in advance according to the situation.

The vehicle-side device B sends a signal to the microcomputer 3 mounted on the vehicle through a weak radio wave receiver 5 that detects the radio waves received by the receiving antenna 4 that receives the weak radio waves transmitted from the transmitting antenna 1. In addition to inputting the detected information, vehicle speed information from the vehicle speed sensor 6 is also input. The microcomputer 3 also outputs and controls drive signals for the display device 7 and the voice synthesis output device 8, which are notification means.

As shown in FIG. 2, the roadside device A crosses the roadway at the standing position of the road surface R of the road sign a (the illustrated road sign a indicates a speed limit of 50 km/h). In addition to installing the transmitting antenna 1 as shown in FIG. It is set up.

Next, an example of the operation of the sign information device having the above configuration will be described according to the flowchart shown in FIG. As a car passes over the transmitting antenna 1 in front of the intersection, as shown in FIG. Enter 3. Based on this input information, an "intersection sign" is displayed on the intersection 7 by λ拮maszarro 1 sobi 1 - 11 ÷ gisu 7, and at the same time, the speech synthesis output device 8 says "There is an intersection ahead. ” is announced.

Further, warning information display signs such as stop signs, railroad crossing signs, road width change signs, etc. make announcements corresponding to each sign in the same way as the intersection sign a1.

Also, for example, a speed limit sign that restricts the speed to 40km/h when driving at 60km/h! When passing over the transmitting antenna 1 at the Ja2 position, the receiving antenna 4 receives a weak radio signal corresponding to the speed limit sign a2, and inputs the information detected by the weak radio wave receiver 5 to the microcomputer 3.

Based on this input information, the microcomputer 3 first outputs a '40 km/h speed limit sign' to the display device 7 if the input information is speed limit information. After that, the vehicle speed is calculated from the output of the vehicle speed sensor 6, and if the vehicle speed exceeds the speed limit input from the sign, the voice synthesis output device 8 outputs a value of 40 kst/h.
If the vehicle continues to exceed the speed limit after a certain period of time has elapsed, the transmission antenna 1 at the 40h/h limit position displayed on the display device 7 will be notified.
If the speed of this car is 40 km/h or less when passing above, the microcomputer 3 first displays the speed limit of 40 km/h on the display device 7, since this input information is speed limit information. Outputs "indicator". After that, the vehicle speed is calculated from the output of the vehicle speed sensor 6,
It is determined that the vehicle speed is within the speed limit input from the sign, and the voice synthesis output device 8 and the "warning" are not displayed.

In the above embodiment, the weak radio wave transmitters 2 of various road signs have respectively output different unique signals. It goes without saying that the basic object of the present invention can be achieved by configuring the weak radio wave receiver 5 to detect the reception and emit a simple reception "warning sound."

In this case, the driver who hears the "warning sound" needs to check the road sign a installed on the road, so the transmitting antenna 1 installed on the road surface must be installed in front of the road sign a. It won't happen.

[Effects of the Invention] As described above, according to the present invention, a transmitting antenna that emits a radio signal in response to a road sign is installed on the road, and a microcomputer installed in a car receives the radio signal from a receiving device. Since the information is processed and accurate driving information is provided to the driver, the driver will be able to more reliably recognize road signs and ensure safe driving. In addition, this invention is excellent in the safe operation of automobiles on roads, as the notification means can provide information by appealing to the driver's auditory senses using audio depending on the type of road sign. It has a great effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the road sign information device of the present invention, FIG. 2 is a schematic front view showing how the above sign information device is used, and FIG. 3 is an operational implementation of the above sign information device. FIG. 4 is a flowchart showing an example, and is a plan view illustrating the road situation when implementing the above-mentioned sign information device. 1... Transmission antenna, 2... Weak radio wave transmitter, 3.
...Microcomputer, 4...Receiving antenna, 5
... Weak radio wave receiver, 6... Vehicle speed sensor, 7...
Display device, 8...Speech synthesis output device, a...
・Road sign, b...car.

Claims (1)

[Claims] A weak radio wave transmitter that transmits weak radio waves of a specific frequency from a transmitting antenna that is buried or erected on the road near the road sign corresponding to the road sign, and a weak radio wave transmitter that is installed under the vehicle body or a part thereof. and weak radio wave reception notification means for audibly or visually announcing the presence of the road sign to a motor vehicle driver using radio waves of a specific frequency received from the receiving antenna for the above-mentioned transmitted radio waves. Information device.