| 摘要 |
Abstract: 5 Method for Detecting a Wheel of a Vehicle The invention relates to a method for detecting a wheel by emitting a measuring beam, recording the frequencies of the reflected measuring beam over time as a received signal, and detecting a change of a predetermined kind in the received signal as a 10 wheel, wherein the vehicle comprises an onboard unit, which stores information that indicates the vehicle length at least indirectly, comprising: reading said information from the onboard unit by way of a radio communication and measuring the speed of the vehicle; computing the duration of the passage of the vehicle passing the detector unit based on this information and the speed; determining a time window in the received 15 signal which shows an approximately constant change of the received signal over the aforementioned duration; determining a spurious signal component in a segment of the received signal that immediately precedes the time window; and compensating the received signal in the time window by the spurious signal component. 20 (FIG. 2) Py Fig. 2 Af F0 - E 27 27' w 26 Fig 4 |
