OBJECT DETECTOR APPARATUS AND METHOD
First Claim
1. An object detector apparatus, comprising:
- a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and
an analyser being configured to sample a signal received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set;
in which the analyser is operable to sample a signal received by the receiver using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set.
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Abstract
An object detector apparatus. The object detector apparatus comprises a receiver which is configured to receive a signal from an object having a repetitive motion, in which the signal repeats at a frequency that is dependent on the frequency of the repetitive motion of the object. The object detector apparatus further comprises an analyser which is configured to sample a signal received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set. The analyser is also operable to sample a signal received by the receiver using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set.
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Citations
30 Claims
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1. An object detector apparatus, comprising:
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a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser being configured to sample a signal received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set; in which the analyser is operable to sample a signal received by the receiver using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25)
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20. An object detector apparatus, comprising:
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a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser coupled to the receiver, the analyser being configured to sample the signal according to a first set of sampling parameters into a first sampled data set, and to produce a first output signal based on a comparison of the first sampled data set with at least one previously sampled data set, and to concurrently sample the signal using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an second output signal based on a comparison of the second sampled data set with at least one previously sampled data set.
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21. An object detector apparatus, comprising:
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a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; and an analyser coupled to the receiver, the analyser being configured to sample a first signal received by the receiver according to a first set of sampling parameters and to produce a first output signal based on a comparison of the first sampled data set with at least one previously sampled data set, and the analyser being configurable to subsequently sample a second signal received by the receiver subsequent to the first signal according to a second set of sampling parameters which differ to the first set of sampling parameters, and to produce an second output signal based on a comparison of the second sampled data set with at least one previously sampled data set.
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22. An object detector apparatus, comprising:
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a receiver configured to receive a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; an analyser coupled to the receiver, the analyser being configured to sample the signal according to a first set of sampling parameters into a first sampled data set, and to produce a first output signal based on a comparison of the first sampled data set with at least one previously sampled data set; and an input mechanism by which the first set of sampling parameters can be input to the analyser. - View Dependent Claims (23, 24)
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26. A method of detecting the presence of an object, the method comprising:
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(i) receiving a signal from an object having a repetitive motion, the signal repeating at a frequency that is dependent on the frequency of the repetitive motion of the object; (ii) sampling the signal received according to a first set of sampling parameters into a first sampled data set, and producing an output signal based on a comparison of the first sampled data set with a first previously sampled data set; and (iii) sampling the signal received according to a second set of sampling parameters which differ to the first set of sampling parameters into a second sampled data set, and producing an output signal based on a comparison of the second sampled data set with a second previously sampled data set. - View Dependent Claims (27, 28, 29, 30)
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Specification