System for detecting the state of a switch device
First Claim
1. A system for sensing the state of a switch device having at least two states, said system comprising:
- a driver circuit having an output operative to provide a driver output signal;
a controller connected to control said driver circuit;
an indicator electrically connected between the output of said driver circuit and the switch device, said indicator being activated in response to the driver output signal and the switch device being in a first state of the at least two states, and a monitoring circuit connected to an electrical node between said indicator and the output of said driver circuit, said monitoring circuit being responsive to the switch device through said indicator, said monitoring circuit being operative to provide a first signal which effects energization of said controller in response to the switch device being in the first state and operative to provide a second signal which effects deenergization of said controller in response to the switch device being in a second state.
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Accused Products
Abstract
A system (10) for detecting the state of a switch device (60) includes a driver circuit (40) having an output (42) operative to provide a driver output signal. An indicator (44) is electrically connected between the driver circuit (40) and the switch device (60). The indicator (44) is activated in response to the driver output signal and upon the switch device (60) being in a first state. A monitoring circuit (70), which is responsive to the switch device (60) through the indicator (44), is electrically connected to a node (64) between the indicator (44) and the driver circuit (40). The monitoring circuit (70) is operative to provide a first signal in response to the switch device (60) being in the first state and a second signal in response to the switch device (60) being in a second state. The monitoring circuit (70) controls energization of a controller (28) so as to power the controller (28) when the switch device (60) is in the first state. The controller (28) controls the driver circuit (40) and a use device (12) in response to a control switch (26) condition.
27 Citations
14 Claims
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1. A system for sensing the state of a switch device having at least two states, said system comprising:
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a driver circuit having an output operative to provide a driver output signal;
a controller connected to control said driver circuit;
an indicator electrically connected between the output of said driver circuit and the switch device, said indicator being activated in response to the driver output signal and the switch device being in a first state of the at least two states, and a monitoring circuit connected to an electrical node between said indicator and the output of said driver circuit, said monitoring circuit being responsive to the switch device through said indicator, said monitoring circuit being operative to provide a first signal which effects energization of said controller in response to the switch device being in the first state and operative to provide a second signal which effects deenergization of said controller in response to the switch device being in a second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification