Title:
DIGITAL OUTPUT APPARATUS AND METHOD FOR GENERATING DIGITAL OUTPUT
Document Type and Number:
WIPO Patent Application WO/2022/224897
Kind Code:
A1
Abstract:
Provided is a digital output apparatus for generating alternating signals that differs from a software process, while maintaining the configuration and safety of the conventional art, in order to reduce the CPU processing load for generating alternating signals by a fail-safe CPU. This digital output apparatus is provided with two computation devices, a collation unit that collates the computation results from the two computation devices, and two output conversion units that each receives an output instruction based on the respective computation results from the two computation devices. The collation unit outputs a first alternating signal when the computation results match, and the two output conversion units output a second alternating signal when the output instruction is an alternating signal output instruction and output a non-alternating signal when the output instruction is an alternating signal stopping instruction.
Inventors:
MIYAJI MASAYUKI (JP)
MORITA KAZUKI (JP)
MORITA KAZUKI (JP)
Application Number:
PCT/JP2022/017771
Publication Date:
October 27, 2022
Filing Date:
April 14, 2022
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G05B9/02; G06F11/16
Foreign References:
| JPH10133900A | 1998-05-22 | |||
| JP2000276202A | 2000-10-06 | |||
| JP2012103882A | 2012-05-31 | |||
| JP2013085318A | 2013-05-09 | |||
| JP2005006376A | 2005-01-06 | |||
| JP2000039902A | 2000-02-08 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY DAI-ICHI KOKUSAI TOKKYO JIMUSHO (JP)
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