Method for detecting an obstacle in the detection area of a detection device
First Claim
1. A method for monitoring a space or a vicinity of an automotive vehicle for a presence of a foreign body or an obstacle using a monitoring device, the monitoring device having at least one transmitter and at least one first and one second receiving device, wherein the second receiving device is spaced further apart from the transmitter than the first receiving device, the method comprising the steps of:
- a) receiving at least one second received signal from the second receiving device;
b) evaluating at least one part of the second received signal for parasitic signal portions which indicate a presence of a parasitic signal source in the space; and
c) monitoring or evaluating a monitoring result only when no parasitic signal portion has been detected in step b), wherein the part of the second signal evaluated for detection of the parasitic signal portions is received before a threshold time represented by a spatial distance between the second receiving device and the transmitter.
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Accused Products
Abstract
A method and a device for monitoring a space for the presence of a foreign body comprises at least one transmitter and a first and second receiving device. The signal of the second receiving device which is spaced further apart from the transmitter than the first receiving device is evaluated for its parasitic signal portions. If the distance between the first and the second receiving device is not too great, it can be assumed that parasitic signal portions detected in the second received signal are also contained in the first received signal. In this case, it is recommended to discontinue monitoring the space or to discard any result of this monitoring already obtained at least until no parasitic signal portions are detected in a repeated evaluation of the second received signal.
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Citations
14 Claims
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1. A method for monitoring a space or a vicinity of an automotive vehicle for a presence of a foreign body or an obstacle using a monitoring device, the monitoring device having at least one transmitter and at least one first and one second receiving device, wherein the second receiving device is spaced further apart from the transmitter than the first receiving device, the method comprising the steps of:
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a) receiving at least one second received signal from the second receiving device; b) evaluating at least one part of the second received signal for parasitic signal portions which indicate a presence of a parasitic signal source in the space; and c) monitoring or evaluating a monitoring result only when no parasitic signal portion has been detected in step b), wherein the part of the second signal evaluated for detection of the parasitic signal portions is received before a threshold time represented by a spatial distance between the second receiving device and the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for monitoring a space or a vicinity of an automotive vehicle for a presence of a foreign body or an obstacle using a monitoring device, the monitoring device having at least one transmitter and at least one first and one second receiving device, wherein the second receiving device is spaced further apart from the transmitter than the first receiving device, the device comprising:
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means for receiving at least one second received signal from the second receiving device; means for evaluating at least one part of the second received signal for parasitic signal portions which indicate a presence of a parasitic signal source in the space; and means for monitoring or evaluating a monitoring result only when no parasitic signal portion has been detected in the second received signal, wherein the part of the second signal evaluated for detection of the parasitic signal portions is received before a threshold time represented by a spatial distance between the second receiving device and the transmitter. - View Dependent Claims (11, 12, 13, 14)
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Specification