Method and system for detecting with radar the passage by a vehicle of a point for monitoring on a road
First Claim
1. A method for monitoring a road and detecting the passage of a vehicle past a monitoring point, comprising:
- transmitting from a transmitting and receiving location remotely situated from said monitoring point at least one substantially continuous radar beam to the monitoring point;
receiving reflections from the at least one transmitted radar beam at the transmitting and receiving location; and
determining from the received reflections that the vehicle is passing the monitoring point by calculating from the received reflections a distance of the vehicle from the transmitting and receiving location and comparing the thus calculated distance to a known distance between the transmitting and receiving location and the monitoring point.
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Accused Products
Abstract
The invention relates to a method for detecting the passage by a vehicle of a determined point for monitoring on a road, wherein from a remotely situated location a radar beam is transmitted continuously to the point for monitoring, reflections from the transmitted radar beam are received at the remotely situated location, and it is determined from the received reflections that the vehicle is passing the point for monitoring. The radar beam can herein be transmitted at an acute angle to the travel direction of the passing vehicle. The detection can be used to activate a red-light camera, to measure the speed of the vehicle or measure the traffic intensity, without sensors, for instance induction loops, having to be arranged in the road for this purpose.
21 Citations
24 Claims
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1. A method for monitoring a road and detecting the passage of a vehicle past a monitoring point, comprising:
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transmitting from a transmitting and receiving location remotely situated from said monitoring point at least one substantially continuous radar beam to the monitoring point; receiving reflections from the at least one transmitted radar beam at the transmitting and receiving location; and determining from the received reflections that the vehicle is passing the monitoring point by calculating from the received reflections a distance of the vehicle from the transmitting and receiving location and comparing the thus calculated distance to a known distance between the transmitting and receiving location and the monitoring point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A detection system for monitoring a road and detecting the passage of a vehicle by a monitoring point, comprising:
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a transmitting and receiving device disposed at a remote location from the monitoring point comprising; (1) a radar transmitter for transmitting at least one substantially continuous radar beam to the monitoring point, (2) a receiver for monitoring reflections from the at least one transmitted radar beam, and (3) a radar device for determining from the received reflections that a vehicle is passing the monitoring point, wherein the transmitting and receiving device is adapted to calculate from the received reflections a distance of the vehicle from the transmitting and receiving device and to compare the thus calculated distance to a known distance between the transmitting and receiving device and the monitoring point. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification