Title:
FUNCTIONAL SAFETY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/157365
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a functional safety device that is able to detect an abnormality occurring in a circuit monitoring a power supply voltage before an abnormality in the power supply voltage occurs. This functional safety device (101) comprises a plurality of central processing devices (205, 206), a power supply generation unit (204), a plurality of voltage monitoring circuits (207, 208), a plurality of switches (209, 210), and a plurality of shutoff confirmation circuits (211, 212), wherein, when one central processing device among the plurality of central processing devices (205, 206) begins an operation confirmation for the voltage monitoring circuit corresponding to the other central processing device, said one central processing device outputs, to the voltage monitoring circuit corresponding to the other central processing device, a shutoff notification commanding a shutoff of the supply of the power supply voltage, and the other central processing device confirms whether the shutoff confirmation has been output, on the basis of the shutoff notification from the relevant voltage monitoring circuit.
Inventors:
TAKANO SHIGENORI (JP)
KAWASAKI SUMITOSHI (JP)
YAMAGUCHI YASUO (JP)
KAWASAKI SUMITOSHI (JP)
YAMAGUCHI YASUO (JP)
Application Number:
PCT/JP2022/035644
Publication Date:
August 24, 2023
Filing Date:
September 26, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G05B9/03; G06F1/30
Foreign References:
| JP2020021308A | 2020-02-06 | |||
| JP2019071001A | 2019-05-09 | |||
| JP2014204570A | 2014-10-27 | |||
| JP2019101515A | 2019-06-24 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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