Boots – shoes – and leggings
Patent
1981-01-16
1983-08-23
Gruber, Felix D.
Boots, shoes, and leggings
371 68, G06F 1516, G06F 1100
Patent
active
044007922
ABSTRACT:
A respective microcomputer is provided for each processing channel in a data processing system constructed according to safety principles. The information to be output to the process are determined by both microcomputers and are supplied in pairs to two non-fail-safe comparators which drive respective AND gates. Each of the AND gates drives a respective amplifier. The power supply of one amplifier occurs from a battery or the like and the power supply of the other amplifier occurs by transformer-coupled output signals of the first amplifier, which signals are then rectified. The information required for the process are coupled via at least one further amplifier whose power supply is provided by a transformer-coupled and rectified output signal of the second amplifier. Given a signal discrepancy between the two microcomputers, information is not permitted to the process which could lead to a dangerous situation.
REFERENCES:
patent: 4012717 (1977-03-01), Censier et al.
patent: 4149069 (1979-04-01), Strelow
patent: 4198678 (1980-04-01), Maatje et al.
patent: 4270168 (1981-05-01), Murphy et al.
patent: 4309768 (1982-01-01), Ault
Gruber Felix D.
Rutherford Douglas H.
Siemens Aktiengesellschaft
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