Back to results
US 2023/0144978 A1Published application
Relay drive systems
AssigneeHamilton Sundstrand Corporation
InventorsFrancis C. Belisle, Joshua C. Swenson
Life of this patent
Estimating the term…
Abstract
A drive system for a switch can include a control module configured to control, directly or indirectly, a state of a switch between a first state and a second state. The drive system can also include a transition timing system configured to measure a transition time that the switch is in transit between the first state and the second state.
Claims20
A drive system for a switch, comprising:
- a control module configured to control, directly or indirectly, a state of the switch between a first state and a second state;
- and
- a transition timing system configured to measure a transition time that the switch is in transit between the first state and the second state.
A switch system, comprising:
- a switch having a contactor coil and an armature;
- and
- a drive system for driving the switch between a first state and a second state, comprising:
- a control module configured to control, directly or indirectly, a state of the switch between the first state and the second state;
- and
- a transition timing system configured to measure a transition time that the switch is in transit between the first state and the second state.
3 more elements
A method, comprising:
- measuring a transition time between a first state of a switch and a second state of a switch;
- and
- determining a health of the switch based on the transition time.
The method of claim 19, wherein measuring a transition time includes:
- turning on a contactor to provide voltage to a coil of the switch to move an armature of the switch from a first position to a second position;
- starting a transition timer when the contactor is turned on;
- waiting until the voltage turn-on transients subside for a blanking time;
- detecting a voltage spike when the armature stops after the blanking time;
- stopping the transition timer when the voltage spike is detected after the blanking time;
- and
- reporting the turn-on transition time.
4 more elements
Dependencies are inferred from the claim text.