MODULAR DATA COLLECTION SYSTEM

摘要

The invention concerns a modular data collection system (4), including a module comprising at least an analog-to-digital converter (12) for converting an analog input signal (IN1, IN2, IN3, IN4) into a digital signal (OUT1, OUT2, OUT3, OUT4), and a clock generating circuit (20) for supplying an internal clock signal (208). The module further comprises a connector for plugging in a removable connecting element (3) on the module (1) front face to connect it to a synchronisation bus connecting several modules in said system. A clock selecting circuit (204) enables to select either a slave-clock status, wherein the converters (12) are synchronised by an external synchronisation signal (fmaster) supplied by said synchronisation bus, or a master-clock status, wherein the converters are synchronised by said internal clock signal which is also used as external synchronisation signal on said synchronisation bus. Trigger signals can also be transmitted by the synchronisation bus and by the connecting elements.