SIGNAL PROCESSING DEVICE, CONTROL METHOD THEREOF, CONTROL PROCEDURE AND RECORDING MEDIUM

• US 20170222839A1
• Filed: 12/13/2016
• Published: 08/03/2017
• Est. Priority Date: 01/29/2016
• Status: Active Application

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: MIYAKE, Hiroki, KOJIMA, Toshiyuki
• Granted Patent: US 10,257,000 B2
• Time in Patent Office: Days
• CPC Class Codes: G01D 3/032 affecting incoming signal, e.g. by averaging; gating undesired signals
• CPC Class Codes: H04L 25/03299 with noise-whitening circuitry
• CPC Class Codes: H04L 43/028 by filtering

Abstract

The invention is adapted to properly suppress noises of various frequency bands. An input unit (10) includes an acquiring element (11) for periodically acquiring signals from a load cell, so as to obtain time series signals; a plurality of frequency filters (121-123) for filtering the time series signals according to frequencies; and a transfer element (13) for transferring the signal filtered by at least one of the frequency filters (121-123) according to the frequency to a control device (90). The suppressed frequency bands of the frequency filters (121-123) are not repeated.

Claims

1. A signal processing device, adapted to filter signals coming from a sensor and transfer the signals to a control device, the signal processing device comprising:

a data acquiring element, periodically acquiring the signals from the sensor, so as to obtain the signals of a time series as time series signals;

a plurality of frequency filters, filtering the time series signals acquired by the data acquiring element according to frequencies, wherein frequency bands suppressed by the frequency filters are not repeated; and

a transfer element, transferring the signal filtered by at least one of the frequency filters according to the frequency to the control device.

2. The signal processing device as claimed in claim 1, further comprising:

a filter switching element, switching each of the frequency filters according to whether the plurality of frequency filters are adapted to the time series signals acquired by the data acquiring element.

3. The signal processing device as claimed in claim 2, wherein the filter switching element switches the frequency filters according to whether the frequency filters are adapted to the time series signals acquired by the data acquiring element during the process that the data acquiring element acquires the signals of the time series.

4. The signal processing device as claimed in claim 3, wherein the filter switching element receives a control command from the control device, and switches the frequency filters according to the control command.

5. The signal processing device as claimed in claim 3, wherein the filter switching element switches the frequency filters according to a flag configured to each of the frequency filters,

wherein the flags are rewritten by the control device.

6. The signal processing device as claimed in claim 1, wherein the frequency filters comprise low pass filters and notch filters.

8. A control procedure, adapted to be loaded to a computer serving as the signal processing device as claimed in claim 1, wherein the control procedure is loaded to the computer to implement functions of the data acquiring element, the frequency filters and the transfer element.

9. A recording medium, recording the control procedure as claimed in claim 8 and adapted to be accessed by a computer.

7. A control method of a signal processing device, adapted to filter signals coming from a sensor and transfer the signals to a control device, the control method of the signal processing device comprising:

a data acquiring step, periodically acquiring the signals from the sensor, so as to obtain the signals of a time series as time series signals;

a filtering step, filtering the time series signals acquired in the data acquiring step according to frequencies, wherein at least one of a plurality of frequency filters with suppressed frequency bands being not repeated is used to perform the filtering step; and

a transfer step, transferring the signal obtained by performing filtering according to the frequency in the filtering step to the control device.