Methods and systems for operating an electronic system
In one example, an electronic system includes, a user interface comprising an input device, a first actuator and a second actuator, the first and second actuators dually actuated by the input device, and a controller, including a comparator, a programmable device, and executable instructions residing in non-transitory memory thereon to, receive first and second output signals from the first and second actuators, respectively, convert the first and second output signals to first and second real-time logic states at the comparator, input the first and second real-time logic states from the comparator to the programmable device, and determine a fault status of the first and second actuators based on the first and second logic states input to a state machine of the programmable device, wherein the first and second logic states input to the state machine include the real-time logic states and historical logic states stored at the controller.
1. An electronic system including:
a user interface comprising an input device,
a first actuator and a second actuator, the first and second actuators dually actuated by the input device, and
a controller, including
a comparator,
a programmable device including a state machine, and
executable instructions residing in non-transitory memory thereon to,
receive first and second output signals from the first and second actuators, respectively,
convert the first and second output signals to first and second real-time logic states at the comparator,
input the first and second real-time logic states from the comparator to the programmable device, and
determine a fault status of the first and second actuators based on the first and second logic states input to the state machine, wherein the first and second logic states input to the state machine include the real-time logic states and historical logic states stored at the controller.
2. The electronic system of claim 1 , wherein the historic logic states include logic states input to the programmable device from the comparator and stored at the controller prior to inputting the real-time logic state to the programmable device from the comparator.
3. The electronic system of claim 1 , wherein the programmable device includes a field programmable gate array.
4. The electronic system of claim 1 , wherein the comparator includes an inverter with a Schmitt trigger.
5. The electronic system of claim 1 , wherein the first and second actuators include a dual switch.
6. The electronic system of claim 1 , wherein the executable instructions to transmit the first and second output signals from the first and second actuators, respectively, to the controller is in response to receiving user input at the input device.
7. The electronic system of claim 1 , wherein the controller includes a controller for a medical imaging system, and the input device includes a button for actuating motion control of the medical imaging system.
8. The electronic system of claim 7 , further comprising a computing device remotely located from but communicatively coupled to the medical imaging system, wherein the computing device includes the controller.
9. A method for controlling an electronic system, including:
at the electronic system,
in response to receiving input at an input device, actuating a dual actuator and transmitting output signals from the dual actuator to a controller,
converting the transmitted output signals to real-time logic states at the controller,
inputting the real-time logic states to a programmable device of the controller, and
determining a fault status of the dual actuators based on logic states input to the programmable device, wherein the logic states include the real-time logic states and historical logic states stored at the controller prior to inputting the real-time logic states to the programmable device.
10. The method of claim 9 , wherein actuating the dual actuator in response to receiving the input at the input device includes actuating a first actuator, and actuating a second actuator before a threshold duration elapses after actuating the first actuator.
11. The electronic system of claim 10 , wherein converting the transmitted output signals to logic states at the controller includes outputting a first logic state when the transmitted output signal is less than a lower threshold value and outputting a second logic state different from the first logic state when the transmitted output signal is greater than an upper threshold value.
12. The method of claim 10 , wherein the threshold duration includes 1.5 s.
13. The method of claim 10 , further comprising
indicating an error fault status at one of the first and second actuators in response to the real-time logic state of the first actuator being equivalent to the real-time logic state of the second actuator, and
maintaining operation of the input device in response to the indicated error fault status.
14. The method of claim 13 , further comprising
changing the error fault status indicated at one of the first and second actuators to a degraded status in response to the real-time logic state of the first actuator being equivalent to the real-time logic state of the second actuator persisting beyond the threshold duration, and
maintaining operation of the input device in response to the indicated degraded status.
15. The method of claim 13 , further comprising clearing the error fault status indicated at one of the first and second actuators in response to a change in the real-time logic state of the first actuator or the real-time logic state of the second actuator prior to the threshold duration.
16. A method of controlling an electronic system, comprising:
at the electronic system,
in response to receiving input at an input device, transmitting first and second output signals from first and second actuators, respectively, to a controller, the controller including a comparator and a programmable device,
converting the first and second output signals to first and second real-time logic states, respectively, at the comparator,
inputting the first and second real-time logic states from the comparator to the programmable device, and
determining a fault status of the first and second actuators based on logic states input to a state machine of the programmable device, wherein the logic states input to the state machine include the first and second real-time logic states and historical logic states stored at the controller.
17. The method of claim 16 , wherein determining the fault status of the electronic system based on the logic states input to the state machine includes indicating a normal mode during a first condition, including when the first and second real-time logic states are inequivalent.
18. The method of claim 17 , wherein determining the fault status of the first and second actuators based on the logic states input to the state machine includes indicating an error mode during a second condition, including when the first and second real-time logic states are equivalent.
19. The method of claim 18 , wherein
the historical logic states include a first historical logic state corresponding to the first actuator and a second historical logic state corresponding to the second actuator, and
the second condition further includes when the first historical logic state is different from the first real-time logic state or when the second historical logic state is different from the second real-time logic state.
20. The method of claim 19 , wherein the first condition further includes when the first historical logic state is different from the first real-time logic state or when the second historical logic state is different from the second real-time logic state.