Schiffsuhrensysteme Marine Time Systems

Smart Secondary Clock Mechanism
Smart Secondary Clock Mechanism
Microcomputer-Controlled Secondary Clock Mechanism
Mühle smart secondary clocks are equipped with an analogue secondary mechanism with its
own microcomputer-based control system. The time information is provided by a central
time unit in the form of digital data. This design configuration produces advantages for use on
means of transport such as ships and trains where, for example, time zone adjustments
need to be made as quickly as possible, or the link to the central time unit is frequently interrupted
(railway carriages). In this secondary-clock concept each clock synchronises itself
independently and quickly from the different pointer positions when the data signal from the
central time unit and the power supply are applied. When used in stationary clock installations
such as in railway stations and airports the system also offers a number of advantages, such
as rapid switchover from summer time to winter time, along with higher reliability and less
susceptibility to faults, as the low-resistance motor control pulses are generated in each clock
mechanism itself. The secondary timepiece referred to (display of the hour and minute) was
developed for use in clock systems installed on seagoing vessels. This area of application is
therefore prominent in the following descriptions. Further developments such as secondary
clocks with additional seconds display are envisaged, but are not described further in this report.
Please refer to the appendix for details and technical specifications.
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