Non-contact selection and control of lighting devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-021/55
G01C-003/08
G01J-001/00
출원번호
US-0466647
(2009-05-15)
등록번호
US-8243278
(2012-08-14)
발명자
/ 주소
Valois, Charles Bernard
출원인 / 주소
Integrated Illumination Systems, Inc.
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
15인용 특허 :
218
초록▼
The present disclosure presents systems and methods for providing for detecting a presence of an object or a user via a non-contact selection switch. An LED may emit a signal, comprising high components and low components within a plurality of pulses. A detector may determine that an average intensi
The present disclosure presents systems and methods for providing for detecting a presence of an object or a user via a non-contact selection switch. An LED may emit a signal, comprising high components and low components within a plurality of pulses. A detector may determine that an average intensity of a received portion of the electromagnetic signal is below a predetermined threshold. The average intensity may be responsive to a ratio of high components duration over a period of time to low components duration over the period of time. An object located in proximity of the non-contact switch may reflect the portion of the signal. The detector may detect presence of the object by determining that a sum of average intensities of the received portion of the electromagnetic signal and the reflected portion of the electromagnetic signal exceeds the predetermined threshold responsive to the ratio of a duration of high components to a duration of low components within or over the period of time.
대표청구항▼
1. A method for detecting a presence of an object, the method comprising: emitting, from a light emitting device (LED) of an apparatus, an electromagnetic signal, the electromagnetic signal comprising high components and low components;determining, by a detector of the apparatus, that an average int
1. A method for detecting a presence of an object, the method comprising: emitting, from a light emitting device (LED) of an apparatus, an electromagnetic signal, the electromagnetic signal comprising high components and low components;determining, by a detector of the apparatus, that an average intensity of a received portion of the electromagnetic signal is below a predetermined threshold, the average intensity determined responsive to a ratio of the high components duration over a period of time to the low components duration over the period of time; anddetecting, by the detector, a presence of an object, located in a first proximity of the detector and reflecting a portion of the electromagnetic signal, by determining that a sum of average intensities of the received portion of the electromagnetic signal and the reflected portion of the electromagnetic signal exceeds the predetermined threshold, the sum of average intensities determined responsive to the ratio. 2. The method of claim 1, wherein the received portion of the electromagnetic signal comprises a portion of the electromagnetic signal that is reflected by a glass of the apparatus. 3. The method of claim 1, further comprising: adjusting the ratio to detect the object at a second proximity, the second proximity comprising a different length of a detection range of the object from the apparatus than the first proximity. 4. The method of claim 1, wherein the object is a part of a body of a person. 5. The method of claim 1, further comprising: adjusting, by a gain circuit of the apparatus, gain of a sum of the received portion and the reflected portion detected by the detector, the gain adjusted to be within a predetermined gain range;filtering, by a frequency filter of the apparatus, a frequency of the sum of the received portion and the reflected portion detected by the detector, the frequency filter eliminating frequencies of the sum that are outside of a predetermined frequency range; anddetecting, by the detector, the presence of the object in response to determining, by a comparator of the apparatus that an average intensity of the sum adjusted by the gain circuit and filtered by the frequency filter exceeds the predetermined threshold. 6. A method for detecting a presence of an object, the method comprising: emitting, from a first light emitting device (LED) of an apparatus, a first signal comprising high components and low components;adjusting a ratio of time duration of the high components in relation to time duration of the low components;reflecting, by a glass of the apparatus, a portion of a second signal, the second signal emitted from a second LED of a non-contact switch; anddetecting, by a detector of the apparatus, a presence of an object located in a proximity of the apparatus and reflecting a portion of the first signal, by determining that an average intensity of a sum of the reflected portions of the first signal and the second signal exceeds a detection threshold of the detector, the average intensity of the sum exceeding the detection threshold based on the ratio. 7. The method of claim 6, wherein the reflected portion of the first signal propagates through the glass that reflects the second portion of the second signal. 8. The method of claim 7, further comprising: determining, by the detector, that the reflected portion of the second signal does not exceed the detection threshold; anddetecting, by the detector, presence of the object by determining that the sum exceeds the detection threshold. 9. The method of claim 6, further comprising: adjusting, by a gain circuit of the apparatus, gain of the sum, the gain of the sum adjusted to be within a predetermined gain range;filtering, by a frequency filter of the apparatus, a frequency of the sum, the frequency filter eliminating frequencies outside of a predetermined frequency range; anddetermining, by a comparator of the apparatus, that the sum adjusted by the gain circuit and filtered by the frequency filter exceeds the detection threshold. 10. The method of claim 9, wherein the gain circuit adjusts the gain to maintain the reflected portion of the second signal received by the detector below detection threshold and wherein the frequency filter filters out signals with carrier frequencies below 35 kilohertz and above 45 kilohertz. 11. A system for detecting a presence of an object, the system comprising: a light emitting device (LED) of an apparatus emits an electromagnetic signal, the electromagnetic signal comprising high components and low components;a detector of the apparatus determines that an average intensity of a received portion of the electromagnetic signal is below a predetermined threshold, the average intensity determined responsive to a ratio of the high components duration over a period of time to the low components duration over the period of time; andthe detector detects a presence of an object, located in a proximity of the apparatus and reflecting a portion of the electromagnetic signal, by determining that a sum of average intensities of the received portion of the electromagnetic signal and the reflected portion of the electromagnetic signal exceeds the predetermined threshold, the sum of average intensities determined responsive to the ratio. 12. The system of claim 11, wherein the received portion of the electromagnetic signal comprises a portion of the electromagnetic signal that is reflected by a glass of the apparatus. 13. The system of claim 11, wherein a user adjusts a ratio, the adjusted ratio enabling detection of the object at a second proximity, the second proximity comprising a different length of a detection range of the object from the apparatus than the proximity. 14. The system of claim 11, wherein the object is a part of a body of a person. 15. The system of claim 11, wherein: an intensity filter of the apparatus adjusts gain of a sum of the received portion and the reflected portion detected by the detector, the gain adjusted to be within a predetermined gain range;a frequency filter of the apparatus filters a frequency of the sum of the received portion and the reflected portion detected by the detector, the frequency filter eliminating frequencies of the sum that are outside of a predetermined frequency range; andthe detector detects the presence of the object in response to determining, by a comparator of the apparatus, that an average intensity of the sum exceeds the predetermined threshold. 16. A system for detecting a presence of an object, the system comprising: a first light emitting device (LED) of an apparatus emitting a first signal comprising high components and low components; a ratio adjuster for adjusting a ratio of time duration of the high components in relation to time duration of the low components;a glass of the apparatus reflecting a portion of a second signal, the second signal emitted from a second LED of a non-contact switch;a detector of the apparatus detecting a presence of an object, located in a proximity of the apparatus and reflection a portion of the first signal, by determining that an average intensity of a sum of the reflected portions of the first signal and the second signal exceeds a detection threshold of the detector, the average intensity of the sum exceeding the detection threshold based on the ratio. 17. The system of claim 16, wherein the reflected portion of the first signal propagates through the glass that reflects the second portion of the second signal. 18. The system of claim 16, wherein the detector determines that the reflected portion of the second signal does not exceed the detection threshold and detects the presence of the object by determining that the sum exceeds the detection threshold. 19. The system of claim 16, wherein a gain circuit of the apparatus adjusts gain of the sum, the gain of the sum adjusted to be within a predetermined gain range; a frequency filter of the apparatus filters a frequency of the sum, the frequency filter eliminating frequencies outside of a predetermined frequency range; anda comparator of the apparatus determines that the sum adjusted by the gain circuit and the frequency filtered by the frequency filter exceeds the detection threshold. 20. The system of claim 19, wherein the gain circuit adjusts the gain to maintain the reflected portion of the second signal received by the detector below the detection threshold and wherein the frequency filter filters out frequencies below 35 kilohertz and above 45 kilohertz.
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