Patent ID: 11921126
Assignee: TECHNISCHE UNIVERSITÄT MÜNCHEN
Field: Measurement (Instruments)
Classification: CPC B  G | IPC A  C  G

Claim 13:
14. A system, comprising:
a device comprising:
a plurality of first fluid channels connected to one or more first fluid inlets;
a plurality of first valves, each of said first valves having a first control port which allows for blocking or un-blocking a flow through one of the first fluid channels based on a pressure applied to said first valve via said first control port;
a plurality of first control channels, each of said first control channels being connected to at least one of said first control ports; and
self-test equipment, featuring:
a plurality of second fluid channels;
a plurality of second valves, each of said second valves having a second control port which allows for blocking or un-blocking a flow through one of the second fluid channels based on a pressure applied to said second valve via said second control port; and
a plurality of second control channels, each of said second control channels being connected to at least one of said second control ports;
wherein each of said first control ports is connected to at least one second control port;

wherein the system is configured to:
pressurize/de-pressurize selected ones of the first control channels;
determine which ones of the second fluid channels are blocked and/or which ones of the second fluid channels are un-blocked, by visually detecting absence or presence of fluid flow through said second fluid channels; and
detect blockage or leakage regarding said first control channels by comparing an expected absence/presence pattern with an actual absence/presence pattern.