Method for determining the locations of at least two impacts
First Claim
1. Method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors;
- and comprising;
a) identifying the location x of one impact, andb) determining a modified sensed signal si′
(t) for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at a reference location j.
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Abstract
A method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, and the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors. To be able to determine simultaneous impacts of different amplitudes the method includes identifying the location x of one impact, and determining a modified sensed signal si′(t) for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison, in particular a correlation, of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at location j. The method can also be based on couples of sensed signals.
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Citations
35 Claims
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1. Method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors;
- and comprising;
a) identifying the location x of one impact, and b) determining a modified sensed signal si′
(t) for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at a reference location j. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, and the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors and comprising:
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a) identifying the location x of one impact, and b) determining a modified signal based on the sensed signal si(t) in which the contribution of the identified impact is reduced and which is furthermore based on a comparison of pairs of sensed signals si(t) and si′
(t) and pairs of corresponding predetermined reference signals rij(t) and ri′
j(t) corresponding to a reference impact Rj at a reference location i. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. Computer program product, comprising one or more non-transitory computer readable media having computer-executable instructions adapted to perform the following:
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a) identify the location x of one impact, and b) determine a modified sensed signal si′
(t), i=1 to n, with n being the number of sensors, for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at location j.
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35. A device for determining the locations of at least two impacts F1 and F2 on a surface comprising:
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a processing unit, and one or more sensors configured and arranged to transmit a sensed signal being the result of the at least two impacts to the processing unit, wherein the processing unit is configured and arranged to; a) identify the location x of one impact, and b) determine a modified sensed signal si′
(t), i=1 to n, with n being the number of sensors, for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at location j.
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Specification