Data acquisition for modular biometric monitoring system

A biometric monitoring system comprising:

• a plurality of modular components configured to sample a predetermined type of biometric data received from at least one respective input channel according to a data acquisition rate, each of the plurality of modular components comprising:
• a first memory structure configured to store housekeeping information associated with operation of the respective modular component, and
• a second memory structure configured to store a representation of the sampled biometric data, the housekeeping information in the first memory structure comprising data indicative of an amount of biometric data stored in the second memory structure and being updated in response to storing the representation of the sampled biometric data in the second memory structure;
• and
• a master module configured to retrieve data asynchronously, via a bus to which each of the plurality modular components is connected, from the second memory structure of the plurality modular components according to a relative fullness of the second memory structure in each of the plurality modular components as determined by the master module based on the updated housekeeping information in the plurality of modular components,
• wherein the master module further comprises a prioritization engine that determines a priority for establishing an order from which of the plurality of modular components that data is collected by the master module.