发明名称 |
DISTANCE MEASURING SENSOR AND METHOD FOR RECORDING AND DETERMINING THE DISTANCE OF AN OBJECT |
摘要 |
A distance-measuring sensor (10) is provided for detecting and determining the distance of objects (18) in a monitored zone comprising a transmitter (12) for transmitting transmitted pulses; a receiver (20) for generating a received signal from the transmitted pulses remitted in the monitored zone; a first comparator unit (36a) for digitizing the received signal with reference to a first threshold; and a control and evaluation unit (30) which is configured to transmit a plurality of transmitted pulses via the transmitter (12), to collect the received signals thereupon generated by the receiver (20) in a histogram and to determine a received time point from the histogram and thus to determine a measured value for the signal transit time from the sensor (10) to the object (18). In this respect, a second comparator unit (36b) is provided for digitizing the received signal with reference to a second threshold, wherein the first comparator unit (36a), the second comparator unit (36b) and the control and evaluation unit (30) are configured to acquire three digital states of a respective section of the received signal with reference to the first threshold and to weight the contributions of the section to the histogram in dependence on the digital state. |
申请公布号 |
EP2942645(B1) |
申请公布日期 |
2016.03.23 |
申请号 |
EP20150161471 |
申请日期 |
2015.03.27 |
申请人 |
SICK AG |
发明人 |
ROTHENBERGER, BERND;JACHMANN, FABIAN;ENGLER, DR. MICHAEL;DOLLMANN, THOMAS |
分类号 |
G01S17/10;G01S7/486;G01S7/487;G01S17/08;G01S17/42 |
主分类号 |
G01S17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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