IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0019075
(2008-01-24)
|
등록번호 |
US-7663737
(2010-04-04)
|
발명자
/ 주소 |
- Albers, Bas
- De Coi, Beat
- Nebiker, Peter
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
5 |
초록
▼
A sensor device including a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit designed to transmit electromagnetic radiation by means of the source and to determine a distance which the electromagnetic radiation emitted from the
A sensor device including a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit designed to transmit electromagnetic radiation by means of the source and to determine a distance which the electromagnetic radiation emitted from the source travels from the reflection surface of an object to respective receivers by evaluation of the delay time of the electromagnetic radiation and/or the phase of an oscillation modulated on to the electromagnetic radiation. The electronics unit for the detection of reflective objects, which are like floating parts and are distributed in three dimensions in a medium, is able to determine from the measured distances a first group of distances which fit a predetermined distribution, and, if there is more than one group member, to emit a signal which is associated with the detection of reflective objects which are like floating parts.
대표청구항
▼
We claim: 1. A sensor device comprising a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit, wherein the electronics unit transmits electromagnetic radiation from the electromagnetic source and the plurality of receivers receiv
We claim: 1. A sensor device comprising a source for electromagnetic radiation, a plurality of receivers for the electromagnetic radiation, and an electronics unit, wherein the electronics unit transmits electromagnetic radiation from the electromagnetic source and the plurality of receivers receive electromagnetic radiation reflected from a reflection surface of an object to determine a distance which the electromagnetic radiation emitted from the source travels from the reflection surface of the object to the respective receiver by evaluation of at least one of the delay time of the electromagnetic radiation and the phase of an oscillation modulated on to the electromagnetic radiation, wherein each of the plurality of receivers is evaluated individually, the electronics unit detects reflective objects, which are like floating parts and are distributed in three dimensions in a medium, by determining from the measured distances a first group of distances which fit a predetermined distribution and the sensor device emits a signal which is associated with the detection of reflective objects which are like floating parts when the first group of distances contains more than one group member. 2. The device of claim 1, wherein the first group contains distances which differ by less than 30%. 3. The device of claim 1, wherein the distances which are compared for formation of the first group of distances are from a subset of the plurality of receivers that have a specific geometric arrangement with respect to one another. 4. The device of claim 1, wherein the number of group members in the first group must be greater than 5, for the electronics unit to pass on a signal which is associated with the detection of reflective objects which are like floating parts. 5. The device of claim 1, wherein the electronics unit evaluates distances which are less than the mean value of approximately equal distances as members of the first group. 6. The device of claim 1, wherein the electronics unit detects at least one of the presence and movement of objects, which are considerably larger than the reflective objects which are like floating parts, as a function of the measured distances. 7. The device of claim 1, wherein the electronics unit determines the intensity of the received electromagnetic radiation. 8. The device of claim 7, wherein the received electromagnetic radiation is light. 9. The device of claim 1, wherein the electronics units controls a driven moving element. 10. The device of claim 9, wherein the driven moving element is a door. 11. The device of claim 1, wherein, the electronics unit continuously emits an appropriate signal when reflective objects which are like floating parts have been detected. 12. The device of claim 11, wherein the electronics unit continues to emit the appropriate signal even when no more reflective objects, which are like floating parts, are detected. 13. The device of claim 1, wherein each of the plurality of receivers comprises a camera chip. 14. The device of claim 1, wherein the electronics unit determines from the distances measured not only the first group but also a second group of approximately equal distances, and the distances of the second group and the distances of the first group are dealt with as if only one group were present. 15. The device of claim 1, wherein the first group contains distances which differ by less than 15%. 16. The device of claim 1, wherein the first group contains distances which differ by less than 5%. 17. The device of claim 1, wherein the electromagnetic radiation is light. 18. The device of claim 1, wherein the first group of distances are approximately identified distances for at least a predetermined subset of the plurality of receivers.
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