Multi-level controller system and method
The invention is a state machine having a host controller that controls a level-1 controller, wherein the level-1 controller controls the level-2 controller. The level-2 controller controls system component controllers, which in turn control system components to execute a process segment. For example, the machine includes a host controller that selects a set of states to be executed, a level-1 controller that activates the set of states in a predetermined order, wherein each state includes commands, and a level-2 controller that controls system components according to the commands. A method of executing a process includes identifying a set of states to be executed, issuing state commands that need to be issued to execute the current state in the set of states, and activating a next state only after all expected status reports have been received for the current state.
1. A method of executing a biological fluid analysis process, the method comprising:
identifying a sequence of first level states to move through using a level-1 controller in the biological fluid analysis process, wherein each of the first level states is associated with a unique first state index number;
generating a level-1 controller table to implement the biological fluid analysis process, the level-1 controller table containing parameters using a processor, wherein the level-1 table associates first level commands with the first level states based upon the parameters, and includes a first column/row of the first level commands to issue to a level-2 controller, a second column/row specifying a status report sent by the level-2 level controller, a third column/row including test information for checking whether a predefined condition is fulfilled, and a fourth column/row defining a course of action if the predefined condition is fulfilled;
modifying at least one of the parameters using a user interface;
issuing one of the first level commands from the level-1 controller to the level-2 controller based upon the level-1 table association for the one first level command; and
receiving the status report from the level-2 controller by the level-1 controller, wherein the status report indicates a status of the level-2 controller in response to the first level command.
2. The method of claim 1 further comprising:
completing the one state and proceeding to another one of the first level states in response to the status report.
3. The method of claim 1 further comprising:
converting the first level command to a plurality of second level commands; and
forwarding the second level commands to a level-3 controller.
4. The method of claim 1 , wherein the level-2 controller accesses a second level table to identify a relevant second level state and a second level command to be issued in the second level state, wherein the second level command is used to selectively control system components.
5. The method of claim 1 , wherein the first level command directly or indirectly controls system components.
6. The method of claim 1 further comprising:
obtaining a sensor measurement to determine a parameter value;
comparing the parameter value to a reference value; and
moving from one of the first level states to another one of the first level states based on a relationship between the parameter value and the reference value.
7. The method of claim 1 further comprising moving from the one of the first level states to another one of the first level states after a predetermined time period in the one of the first level states.
8. The method of claim 1 further comprising issuing an error signal if the status report is not received within a predefined time period.