Signal processing device, signal processing method, information processing program and recording medium
AssigneeOMRON Corporation
InventorsZiqiang Xu, Katsufumi Yoshida
Life of this patent
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Abstract
The invention relates to a signal processing device, a signal processing method, an information processing program and a recording medium, which removes wide-range frequency noise. In a signal processing device (10), a cycle of acquiring a signal from a sensor is a data acquisition cycle, which is shorter than a cycle of forwarding time sequence data from which noise is removed to a controller, that is, a forwarding cycle.
Claims7
A signal processor, processing a signal from a sensor and forwarding the signal to a control device, wherein the signal processor comprises:
- an acquisition circuitry that acquires the signal from the sensor with a specified data acquisition cycle, thereby generating time sequence data;
- a noise removal circuitry that removes frequency noise from the time sequence data;
- and
- a forwarding circuitry that periodically forwards the time sequence data, from which the frequency noise is removed via the noise removal circuitry, to the control device with a specified forwarding cycle,
- the data acquisition cycle is shorter than the forwarding cycle,
- the forwarding cycle is an integer multiple of two or more than two of the data acquisition cycle.
A signal processing method, processing a signal from a sensor and forwarding the signal to a control device, wherein the signal processing method comprises:
- an acquisition step of acquiring the signal from the sensor with a specified data acquisition cycle, thereby generating time sequence data;
- a noise removal step of removing frequency noise from the time sequence data;
- and
- a forwarding step of periodically forwarding the time sequence data, from which the frequency noise is removed via the noise removal step, to the control device with a specified forwarding cycle,
- the data acquisition cycle is shorter than the forwarding cycle,
- the forwarding cycle is an integer multiple of two or more than two of the data acquisition cycle.
A non-transitory recording medium, recording an information processing program and computer-readable,
- the information processing program is for causing a computer to process a signal from a sensor and forwarding the signal to a control device and to be configured to:
- acquire the signal from the sensor with a specified data acquisition cycle, thereby generating time sequence data;
- remove frequency noise from the time sequence data;
- and
- periodically forward the time sequence data, from which the frequency noise is removed to the control device with a specified forwarding cycle,
- the data acquisition cycle is shorter than the forwarding cycle,
- the forwarding cycle is an integer multiple of two or more than two of the data acquisition cycle.
Dependencies are inferred from the claim text.