Method and device for the multi-technology detection of vehicles
First Claim
Patent Images
1. A method of detecting vehicles on at least one stretch of a carriageway implementing:
- an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway;
and at least one detection chosen from;
a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway;
a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected;
and comprising processing the results of the acoustic detection and at least one of the video and radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle;
wherein each detection performs the acquisition and processing steps at a sufficient frequency to allow at least two acquisitions of a vehicle travelling in the monitoring zone at a given reference speed.
1 Assignment
0 Petitions
Accused Products
Abstract
Method of detecting vehicles on at least one stretch of a carriageway implementing at least two types of detection chosen from:
- a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway;
- an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway;
- a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected,
and comprising at least one step of processing the results of the optical and/or sound and/or radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle.
8 Citations
30 Claims
-
1. A method of detecting vehicles on at least one stretch of a carriageway implementing:
-
an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway; and at least one detection chosen from; a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway; a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected; and comprising processing the results of the acoustic detection and at least one of the video and radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle; wherein each detection performs the acquisition and processing steps at a sufficient frequency to allow at least two acquisitions of a vehicle travelling in the monitoring zone at a given reference speed. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of detecting vehicles on at least one stretch of a carriageway implementing:
-
an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway; and at least one detection chosen from; a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway; a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected; and comprising processing the results of the acoustic detection and at least one of the video and radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle; wherein each detection provides at least one item of information regarding the presence of a mobile object in the monitoring zone and a confidence index related to the presence information. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. A method of detecting vehicles on at least one stretch of a carriageway implementing:
-
an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway; and at least one detection chosen from; a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway; a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected; and comprising processing the results of the acoustic detection and at least one of the video and radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle; wherein the comparison between the result of one of the detections with the result of another detection is performed on the basis of a time offset determined as a function of the speed, optionally of the direction of the movement of the vehicle and of the distance between the monitoring zones for the detections whose results are compared. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A device for detecting vehicles on at least one stretch of a carriageway comprising:
-
acoustic detection means comprising at least one microphone disposed in such a way as to record the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of the carriageway and means for processing the sound; and at least one type of means of detection chosen from; video detection means comprising a video camera disposed in such a way as to monitor at least one zone, termed the video monitoring zone, of the stretch of the carriageway and means for processing video images provided by the video camera; radar detection means comprising a microwave source emitting towards at least one zone, termed the radar monitoring zone, of the stretch of the carriageway, means for receiving the microwave electromagnetic radiation reflected, and means for processing the radiation reflected; as well as a processing unit linked to the acoustic detection means and at least one of the video and radar detection means and adapted for delivering at least one item of information regarding the presence or absence of at least one vehicle; wherein, on the one hand, the detection means are adapted to acquire the sound and at least one of the video images and radiation reflected and, on the other hand, the processing means and processing unit are adapted for processing the results of the acoustic detection and at least one of the video and radar detections, at a sufficient frequency to allow at least two acquisitions of a vehicle travelling in the monitoring zone at a given reference speed. - View Dependent Claims (20, 21, 22)
-
-
23. A device for detecting vehicles on at least one stretch of a carriageway comprising:
-
acoustic detection means comprising at least one microphone disposed in such a way as to record the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of the carriageway and means for processing the sound; and at least one type of means of detection chosen from; video detection means comprising a video camera disposed in such a way as to monitor at least one zone, termed the video monitoring zone, of the stretch of the carriageway and means for processing video images provided by the video camera; radar detection means comprising a microwave source emitting towards at least one zone, termed the radar monitoring zone, of the stretch of the carriageway, means for receiving the microwave electromagnetic radiation reflected, and means for processing the radiation reflected; as well as a processing unit linked to the acoustic detection means and at least one of the video and radar detection means and adapted for delivering at least one item of information regarding the presence or absence of at least one vehicle and a confidence index related to the presence information. - View Dependent Claims (24, 25, 26)
-
-
27. A device for detecting vehicles on at least one stretch of a carriageway comprising:
-
acoustic detection means comprising at least one microphone disposed in such a way as to record the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of the carriageway and means for processing the sound; and at least one type of means of detection chosen from; video detection means comprising a video camera disposed in such a way as to monitor at least one zone, termed the video monitoring zone, of the stretch of the carriageway and means for processing video images provided by the video camera; radar detection means comprising a microwave source emitting towards at least one zone, termed the radar monitoring zone, of the stretch of the carriageway, means for receiving the microwave electromagnetic radiation reflected, and means for processing the radiation reflected; as well as a processing unit linked to the acoustic detection means and at least one of the video and radar detection means and adapted for delivering at least one item of information regarding the presence or absence of at least one vehicle; wherein the processing unit is also adapted to compare the result of one of the detections with the result of another detection on the basis of a time offset determined as a function of the speed, optionally of the direction of the movement of the vehicle and of the distance between the monitoring zones for the detections whose results are compared. - View Dependent Claims (28, 29, 30)
-
Specification