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This system shuts down power from a central control in an emergency. The shut-down encompasses all computers in a group of distributed processing computers.
English (United States)
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Master System Emergency Pull Control
This system shuts down power from a central control in an emergency. The
shut-down encompasses all computers in a group of distributed processing
The system includes a transmitter, shown in Figs. 1a and 1b, and a
receiver/power switch (reset) unit, shown in Fig. 2. Fig. 1a is a front view of the
Master System Emergency Pull Control 1 with a pushbutton 2 that is depressed
in case it is desired to shut power off in the system. Fig. 1b is a perspective view
of the unit showing a transmitter 3 for generating a signal at a selected
frequency, and a power connection represented by power cord 4. A battery
could also be used. In Fig. 2, each computer, such as computer 6, is connected
by means of a power cord 7 into a receiver unit 8, that in turn is connected into a
wall socket 9. When button 2 on unit 1 is depressed, a signal, such as an
ultrasonic signal, is transmitted to each of the receiver units of all of the
computers which are then activated to turn off power by way of a solenoid or
other electronic means.
An alternative is illustrated in Fig. 3. In this case, the Master System power
control unit 10 is enclosed in a free-standing enclosure for mounting on the
machine or on a nearby table.
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