CN108417090A - An automatic early warning system for vehicles at intersections without traffic lights at night - Google Patents

Abstract

The present invention discloses a kind of night without traffic lights intersection vehicle automatic early-warning system, is related to technical field of intelligent traffic.It include the road conditions detection device at crossing, the VISIBLE LIGHT EMISSION machine in roadside and front of the car visible photoreceiver, road conditions detection device detects the information of intersection or so both direction vehicle and pedestrian in real time, the vehicle for driving to corresponding crossing is sent to using the LED street lamp in the roadside by the VISIBLE LIGHT EMISSION machine in roadside, the visible photoreceiver of the front of the car receives the form reported by vehicle-mounted voice after signal and the information of the crossing or so both direction vehicle and pedestrian is passed to driver.Pass through above-mentioned technical proposal, intersection both sides blind area situation timely and effectively can be passed to driver by the present invention, to make correct driver behavior, to ensure driving safety, night is reduced without the traffic accident because caused by sight is inadequate of traffic lights intersection.

Description

An automatic early warning system for vehicles at intersections without traffic lights at night

technical field

The invention relates to the technical field of intelligent transportation, in particular to an automatic warning system for vehicles at intersections without traffic lights at night.

Background technique

With the rapid development of LEDs, all kinds of LEDs have been widely used in traffic lights. Because LEDs have the advantages of ultra-high brightness, energy saving and environmental protection, and also have the characteristics of fast switching response, they can be used in the visible light communication part of intelligent transportation.

In the existing intelligent traffic system, there are many researches on traffic flow and traffic signal control at intersections, and this technology is becoming mature. However, there are few effective early warning systems for such accident-prone traffic scenes as intersections without traffic lights at night. This intersection without traffic lights is ubiquitous in towns and villages and highway entrances and exits. Even if there is a reminder of the traffic slow-moving indicator board, it will be negligent due to the subjective judgment of the driver, which is easy to cause traffic accidents.

Contents of the invention

In order to solve the problem that traffic accidents are easily caused by insufficient sightlines at intersections without traffic lights at night, the present invention provides an automatic early warning system for vehicles at intersections without traffic lights at night, which can give warnings to passing vehicles and other intersections at intersections without traffic lights. The vehicle or pedestrian information will remind the driver in the form of on-board voice broadcast, thereby reducing the occurrence of traffic accidents.

To achieve the above object, the present invention adopts the following technical solutions:

An automatic early warning system for vehicles at intersections without traffic lights at night, which includes a road condition detection device at the intersection, a visible light transmitter on the side of the road and a visible light receiver at the front of the vehicle. The information is sent to the vehicle driving to the corresponding intersection through the visible light transmitter on the roadside by using the LED street lamp on the roadside. and pedestrian information to the driver.

Further, the road condition detection device includes a detection device, a data processing device and a wireless data transmitting device connected in sequence, the detection device collects the road condition information corresponding to each intersection, sends the collected information to the data processing device for processing, and The processed information is sent to the corresponding visible light transmitter through the data wireless transmitter.

Further, the visible light transmitter includes a data wireless receiving device, a data converting device and a visible light emitting device connected in sequence, the data wireless receiving device receives the road condition information from the data wireless transmitting device correspondingly, and passes the received information through the data converting device Convert it into a visible light signal, and send the visible light signal to the vehicle driving to the corresponding intersection through the visible light emitting device.

Further, the visible light receiver includes a visible light receiving device, a signal conversion device and a voice broadcast connected in sequence. The visible light receiving device receives the optical signal sent by the visible light emitting device, converts the optical signal into voice information through the signal conversion device, and passes the connected The car audio system transmits road condition information to the driver in the form of voice broadcast.

Beneficial effect:

1. The present invention utilizes the advantages of visible light communication, which can not only provide vision for vehicles at night, but also realize communication between road vehicles, so as to timely and effectively transmit the situation of blind spots on both sides of the intersection to the driver, so that the driver can do better. Make correct driving operation, ensure driving safety, and reduce traffic accidents caused by insufficient sight at intersections without traffic lights at night.

2. In the present invention, since the direction of illumination of the LED street lamps installed at each intersection is the opposite direction of the vehicle at the intersection, vehicles at other intersections will not receive the signal sent by the visible light transmitter at the intersection, thereby avoiding the signal At the same time, the present invention utilizes the characteristic of good directivity of visible light communication, so that the actual communication cost and practicability are superior to other wireless communication methods.

Description of drawings

Fig. 1 is a schematic diagram of an application scene of an automatic early warning system for vehicles at intersections without traffic lights at night according to an embodiment of the present invention;

2 is a schematic structural diagram of a road condition detection device according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a visible light transmitter according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a visible light receiver according to an embodiment of the present invention;

In the figure: 1-road condition detection device, 2-visible light transmitter, 3-visible light receiver, 11-detection device, 12-data processing device, 13-data wireless transmitting device, 21-data wireless receiving device, 22-data conversion device, 23-visible light emitting device, 31-visible light receiving device, 32-signal conversion device, 33-voice broadcast.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

This embodiment proposes an automatic early warning system for vehicles at intersections without traffic lights at night, as shown in FIG. When there are vehicles to pass through the first intersection and the third intersection, the road condition detection device 1 at the second intersection and the fourth intersection sends the detected road condition information to the visible light transmitter 2 at the first intersection and the third intersection. Visible light transmitter 2 at the intersection with the third intersection sends the received information to the vehicles at the first intersection and the third intersection through visible light communication (the illumination light emitted by the LED street lamp on the roadside at night), and the vehicles at the first intersection and the third intersection The visible light receiver 3 at the front end of the vehicle at the intersection conveys the received signal to the vehicle drivers at the first intersection and the third intersection in the form of voice broadcast.

As shown in Figure 2, road condition detection device 1 comprises detection device 11, data processing device 12 and data wireless transmitting device 13, and detection device 11 (can be based on infrared rays) collects the road condition information corresponding to each crossroads, and the collected information Send to the data processing device 12 for processing, and send the processed information to the corresponding visible light transmitter 2 through the data wireless transmitting device 13 . For example, the detection device 11 at the first intersection and the third intersection sends the collected road condition information to the visible light transmitter 2 at the second intersection and the fourth intersection, and the detection devices 11 at the second intersection and the fourth intersection transmit the collected traffic information. The road condition information is sent to the visible light transmitter 2 at the first intersection and the third intersection.

As shown in Figure 3, the visible light transmitter 2 includes a data wireless receiving device 21, a first signal converting device 22 and a visible light transmitting device 23, and the data wireless receiving device 21 receives the road condition information from the data wireless transmitting device 13 accordingly, and transmits The received information is converted into a visible light signal by the signal converting device 22 , and the visible light signal is sent to the vehicle traveling to the corresponding intersection through the visible light emitting device 23 . The visible light transmitter 2 here mainly utilizes the characteristic of its transmitting signal direction, and the signal sent by it can only be received by the vehicles at the intersection, and there will be no signal interference.

As shown in Figure 4, the visible light receiver 3 includes a visible light receiving device 31, a second signal conversion device 32, and a voice broadcast 33. The light signal is converted into voice information by the second signal conversion device 32, and the road condition information is transmitted to the driver in the form of voice announcement 33 through the connected car audio system.

For the limitation of the protection scope of the present invention, those skilled in the art should understand that on the basis of the technical solution of the present invention, various modifications or deformations that those skilled in the art can make without creative labor are still within the protection scope of the present invention within.

Claims (4)

1. An automatic early warning system for vehicles at a crossroad without traffic lights at night, which comprises a road condition detection device (1) at the intersection, a visible light transmitter (2) at the roadside and a visible light receiver (3) at the front end of the vehicle, characterized in that: The road condition detection device (1) detects the information of vehicles and pedestrians in the left and right directions of the intersection in real time, and transmits the information to the vehicles driving to the corresponding intersection through the visible light transmitter (2) on the roadside using the LED street lamp on the roadside, The visible light receiver (3) at the front end of the vehicle transmits the information of vehicles and pedestrians in the left and right directions of the intersection to the driver in the form of on-board voice broadcast after receiving the signal. 2. the nighttime automatic early warning system for vehicles without traffic lights at intersections according to claim 1, characterized in that: said road condition detection device (1) comprises a detection device (11), a data processing device (12) and a data processing device (12) connected successively. A wireless transmitting device (13), the detection device (11) collects road condition information corresponding to each intersection, sends the collected information to the data processing device (12) for processing, and passes the processed information through The data wireless transmitting device (13) sends to the corresponding visible light transmitter (2). 3. The automatic early warning system for vehicles at intersections without traffic lights at night according to claim 1, characterized in that: the visible light transmitter (2) includes a data wireless receiving device (21) and a data conversion device (22) connected in sequence and the visible light transmitting device (23), the wireless data receiving device (21) receives the road condition information from the wireless data transmitting device (13) correspondingly, and passes the received information through the data conversion device (22) It is converted into a visible light signal, and the visible light signal is sent to a vehicle traveling to a corresponding crossing through the visible light emitting device (23). 4. The automatic early warning system for vehicles at intersections without traffic lights at night according to claim 1, characterized in that: the visible light receiver (3) comprises a visible light receiving device (31), a signal converting device (32) and Voice broadcast (33), the visible light receiving device (31) receives the light signal sent by the visible light emitting device (23), converts the light signal into voice information through the signal conversion device (32), and transmits the light signal through the connected The vehicle audio system of the vehicle transmits the road condition information to the driver in the form of the voice broadcast (33).