Device for determining the movement of a rotary element, particularly for readings of water and/or gas meters
First Claim
1. A device for determining the movement of a rotary element equipped with a pattern representing a reflected binary code on at least three bits, comprising:
- a detection circuit comprising at least three sensors interacting with the rotary element and configured to deliver an incident signal encoded in reflected binary code on at least three bits during the rotation of said pattern in front of said sensors, wherein said reflected binary code on at least three bits comprises one or more prohibited states,a transcoding circuit configured to convert the incident signal into an intermediate signal encoded in reflected binary code on two bits,a decoding circuit configured to receive the intermediate signal and to deliver at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing a direction of rotation, anda processing circuit configured to determine the movement of the rotary element and comprising at least one general purpose timer configured to receive said at least one clock signal and said direction signal.
1 Assignment
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Accused Products
Abstract
A rotary element is equipped with a pattern representing a reflected binary code on at least three bits. A detection circuit is configured to sense the pattern and deliver an incident signal encoded in reflected binary code on at least three bits. The incident signal is converted by a transcoding circuit into an intermediate signal encoded in reflected binary code on two bits. A decoding stage decodes the intermediate signal and outputs at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing the direction of rotation. A processing circuit determines the movement of the rotary element, and has at least one general purpose timer designed to receive the at least one clock signal and direction signal.
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Citations
12 Claims
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1. A device for determining the movement of a rotary element equipped with a pattern representing a reflected binary code on at least three bits, comprising:
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a detection circuit comprising at least three sensors interacting with the rotary element and configured to deliver an incident signal encoded in reflected binary code on at least three bits during the rotation of said pattern in front of said sensors, wherein said reflected binary code on at least three bits comprises one or more prohibited states, a transcoding circuit configured to convert the incident signal into an intermediate signal encoded in reflected binary code on two bits, a decoding circuit configured to receive the intermediate signal and to deliver at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing a direction of rotation, and a processing circuit configured to determine the movement of the rotary element and comprising at least one general purpose timer configured to receive said at least one clock signal and said direction signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for determining the movement of a rotary element equipped with a pattern representing a reflected binary code on at least three bits, comprising:
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a sensing circuit interacting with the rotary element and configured to deliver an incident signal encoded in reflected binary code on at least three bits in response to rotation of the rotary element, a transcoding circuit configured to convert the incident signal into an intermediate signal encoded in reflected binary code on two bits, a decoding circuit configured to decode the intermediate signal and output at least one clock signal representing the amount of rotation of the rotary element and a direction signal representing a direction of rotation, a synchronous timer circuit having an input receiving said at least one clock signal, wherein the synchronous timer circuit is clocked by a control clock signal, and a clock gating circuit configured to selectively pass a base clock signal as said control clock signal in response to a clock gating signal. - View Dependent Claims (11, 12)
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Specification