JP2001175991A5 - - Google Patents

Description

[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1
FIG. 1 is a schematic view of a vehicle detection apparatus and an information providing system according to a first embodiment, in which 1 is a visible camera installed on the roadside, 4 is a vehicle detection apparatus installed on the roadside, and B1 is a vehicle detection Detection coverage area of the device 4, 3 is a marking board installed on the roadside in front of the visible camera 1, B2 is a visual recognition area where the marking board 3 can be confirmed from passing vehicles, P1 is a road upstream end position of the visual recognition area B2 , P2 is visual recognition road downstream end position of the region B2, D2 is the distance viewing area B2, C1 is an event detection target of the vehicle, P0 is the position of the vehicle at the time of the event detection, D1 is the position P0 of the vehicle at the time of the event detection It is a relative distance with the road upstream end position P1 of the visual recognition area B2 of the marking board. Further, 1 and 4 constitute a vehicle detection device, 1, 3 and 4 constitute an information providing system.

[0017]
[Equation 1]

[0021]
Second Embodiment
FIG. 4 is a schematic view showing a vehicle detection apparatus and an information providing system according to a second embodiment of the present invention. In the figure, 5 has a function of transmitting a modulation signal of event information to a vehicle antenna such as a GPS antenna. 6 is a vehicle detection device having a function of transmitting event information to the radio wave transmitter 5, B3 is a reception coverage area of the radio wave transmitted from the radio wave transmitter 5, and P3 is a radio wave transmitter P4 is the road upstream end point of radio coverage B2 from P5, P4 is the road downstream end of reception coverage B2 of radio from radio transmitter 5 , D4 is the distance of reception coverage, C1 is the event P0 is the position of the vehicle at the time of event detection, and D3 is the position P0 of the vehicle at the time of event detection and the road upstream point P3 in the coverage area of the radio wave of radio transmitter 5. Relative distance with The vehicle C1 receives the modulated signal transmitted from the radio wave transmitter 5 in the reception area B3 by the on-vehicle antenna, demodulates the received signal by the on-vehicle receiver, and extracts event information, and the vehicle information is extracted from the event information Display warning etc. on the mounted display. 1, 5 and 6 constitute a vehicle detection apparatus, and further, an information provision system is constituted including a display mounted on a vehicle, an on-vehicle antenna and an on-vehicle receiver. Here, the radio wave transmitter 5 transmits a transmission signal or pseudo GPS signal of a specific frequency channel, and the on-vehicle receiver demodulates the signal and displays the received information on the display based on the demodulated information. . In this case, display information corresponding to the demodulated information is stored in advance in a memory, and a display corresponding to the demodulated information is performed by a display such as a display attached to car navigation.

Claims (5)

Vehicle detection means for detecting the position and speed of a passing vehicle;
This determines the traveling state of the traveling vehicles based on the detected position and speed, the output timing of the event information to be provided to the traveling vehicles based on this determination result, a control means for setting in accordance with the position and velocity Vehicle detection device equipped with The vehicle detection means
Visible camera which photographs passing vehicle,
Based on the image information from the camera, and image processing means for detecting the position and speed of the vehicle,
The vehicle detection device according to claim 1, comprising: The vehicle detection device according to claim 2 , wherein the visible camera is an infrared camera. Marking means for displaying information provided to the passing vehicle;
A vehicle detection means for detecting the position and speed of the passing vehicles,
Based on the detected position and velocity to determine the traveling state of the passing vehicles, as information based on the determination result is displayed in a position having the vehicle the viewing area of the sign means, and the position Control means for setting the indication timing of the indication means according to the speed ;
Information provision system equipped with A communication device for receiving information to be displayed on display means in the vehicle;
And transmitting means for transmitting the display information to the communication device,
Vehicle detection means for detecting the position and speed of a passing vehicle;
Based on the detected position and velocity to determine the traveling state of the passing vehicles, so that information by the position information based on the determination result with the vehicle in the region of the transmission means is displayed, the position and a control means for setting the transmission timing of the transmission unit according to the speed and,
Information provision system equipped with