Method and apparatus for the graphic registration of moving vehicles
First Claim
1. A method for registering oncoming vehicles, comprising the steps of:
- determining a measured speed value of an oncoming vehicle with a radar speed measuring device, said measured speed value being determined during a measuring stage after a vehicle enters a measuring beam of said radar speed measuring device;
producing a frontal record of said vehicle with a frontal recording device when said measured speed value exceeds a predetermined threshold value;
checking said measured speed value to verify an accurate speed measurement, said speed measurement being verified with measurements from said radar speed measuring device as the vehicle travels through a verification distance; and
indicating the measured speed value on said frontal record produced by said frontal recording device, said indicating step following said checking step such that said measured speed value is indicated on said record only after said speed measurement is verified by said checking step.
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Accused Products
Abstract
Vehicles are measured and photographed from the direction in which they are travelling by a Doppler radar speed measuring device equipped with a camera. During a measuring stage after the vehicle enters the radar beam, a measured speed value is determined and when this exceeds a specific limit value, the camera is triggered. The Doppler signal for checking the measured speed value is then further evaluated over a verification distance. If the measured speed value is confirmed then it is printed on the photograph at the end of the verification distance, if it has not been confirmed, then a cancellation indicator is printed. The film is then advanced and the detection of the entry of another vehicle is awaited. As a result of this checking of the measured speed value, the measuring reliability when registering oncoming vehicles is substantially increased and overtaking in particular can be detected in the range of the radar beam.
29 Citations
16 Claims
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1. A method for registering oncoming vehicles, comprising the steps of:
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determining a measured speed value of an oncoming vehicle with a radar speed measuring device, said measured speed value being determined during a measuring stage after a vehicle enters a measuring beam of said radar speed measuring device; producing a frontal record of said vehicle with a frontal recording device when said measured speed value exceeds a predetermined threshold value; checking said measured speed value to verify an accurate speed measurement, said speed measurement being verified with measurements from said radar speed measuring device as the vehicle travels through a verification distance; and indicating the measured speed value on said frontal record produced by said frontal recording device, said indicating step following said checking step such that said measured speed value is indicated on said record only after said speed measurement is verified by said checking step. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for registering oncoming vehicles, comprising:
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a radar speed measuring device for determining a measured speed value of an oncoming vehicle during a measuring stage after a vehicle enters a measuring beam of said radar speed measuring device; recording means for producing a frontal record of said vehicle when said measured speed value exceeds a predetermined threshold value; means for checking said measured speed value to verify an accurate speed measurement said checking means verifying said speed measurement on the basis of measurements from said radar speed measuring device as said vehicle travels through a verification distance; and means for indicating said measured speed on said frontal record, said indicating means indicating said measured speed value on said frontal record only after said checking means verifies said speed measurement. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification