Vehicle including multiple analog switch monitoring system with simultaneous switch-state detection
First Claim
1. An automotive vehicle including a switch detection system, comprising:
- a hardware controller including a power supply that generates a supply voltage;
a first switch assembly including an input terminal that receives the supply voltage, the first switch assembly including a first switch that operates in a first plurality of switch states;
a second switch assembly connected in series with the first switch assembly and including an output terminal connected to a voltage reference point, the second switch assembly including a second switch that operates in a second plurality of switch states,wherein based on a voltage potential across the input terminal and the output terminal, the hardware controller determines the first plurality of switch states independently from the second plurality of switch states, and determines the second plurality of switch states independently from the first plurality of switch states, andwherein based on a combination of a current switch state of the first switch assembly and a current switch state of the second switch assembly, the hardware controller determines a current operating state of the automotive vehicle from among a plurality of different operating states,wherein the at least one first switch resistor comprises;
a first resistor including a first terminal connected to the input terminal and an opposing terminal connected to a first pole of the first switch; and
a second resistor including a first terminal connected to the opposing terminal of the first resistor, and a second terminal connected to a second pole of the first switch such that the second resistor is connected in parallel with the first switch,wherein the at least one second switch resistor comprises;
a third resistor including a first terminal connected to both the second terminal of the second resistor and the second pole of the first switch, and a second terminal connected directly to a first pole of the second switch; and
a fourth resistor including a first terminal connected directly to both the second terminal of the third resistor and the first pole of the second switch, the third resistor further including an opposing terminal connected directly to a second pole of the second switch such that the fourth resistor is connected in parallel with the second switch.
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Accused Products
Abstract
An automotive vehicle includes a switch detection system with a hardware controller having a power supply configured to generate a supply voltage. A first switch assembly includes an input terminal configured to receive the supply voltage. The first switch assembly includes a first switch configured to operate in a first plurality of switch states. A second switch assembly is connected in series with the first switch assembly and includes an output terminal connected to a voltage reference point. The second switch assembly includes a second switch configured to operate in a second plurality of switch states. Based on a voltage potential across the input terminal and the output terminal, the hardware controller determines the first plurality of switch states independently from the second plurality of switch states, and determines the second plurality of switch states independently from the first plurality of switch states.
51 Citations
17 Claims
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1. An automotive vehicle including a switch detection system, comprising:
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a hardware controller including a power supply that generates a supply voltage; a first switch assembly including an input terminal that receives the supply voltage, the first switch assembly including a first switch that operates in a first plurality of switch states; a second switch assembly connected in series with the first switch assembly and including an output terminal connected to a voltage reference point, the second switch assembly including a second switch that operates in a second plurality of switch states, wherein based on a voltage potential across the input terminal and the output terminal, the hardware controller determines the first plurality of switch states independently from the second plurality of switch states, and determines the second plurality of switch states independently from the first plurality of switch states, and wherein based on a combination of a current switch state of the first switch assembly and a current switch state of the second switch assembly, the hardware controller determines a current operating state of the automotive vehicle from among a plurality of different operating states, wherein the at least one first switch resistor comprises; a first resistor including a first terminal connected to the input terminal and an opposing terminal connected to a first pole of the first switch; and a second resistor including a first terminal connected to the opposing terminal of the first resistor, and a second terminal connected to a second pole of the first switch such that the second resistor is connected in parallel with the first switch, wherein the at least one second switch resistor comprises; a third resistor including a first terminal connected to both the second terminal of the second resistor and the second pole of the first switch, and a second terminal connected directly to a first pole of the second switch; and a fourth resistor including a first terminal connected directly to both the second terminal of the third resistor and the first pole of the second switch, the third resistor further including an opposing terminal connected directly to a second pole of the second switch such that the fourth resistor is connected in parallel with the second switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A switch detection system installed on an automotive vehicle, the switch detection system comprising:
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a first switch assembly including a first node that receives a supply voltage, and including a first switch that operates in a first plurality of switch states; a second switch assembly connected to a voltage reference point via a second node and connected in series with the first switch assembly via a third node, the second switch assembly including a second switch that operates in a second plurality of switch states; and a hardware controller that determines an existing voltage potential across the first and second nodes among a plurality of different voltage potentials, and based on the existing voltage potential, determines the first plurality of switch states independently from the second plurality of switch states, and the second plurality of switch states independently from the first plurality of switch states, and wherein based on a combination of a determined switch state of the first switch assembly from among the first plurality of switch states and a determined switch state of the second switch assembly from among the second plurality of switch states, the hardware controller determines a current operating state of the automotive vehicle from among a plurality of different operating states, wherein the at least one first switch resistor comprises; a first resistor including a first terminal connected to the input terminal and an opposing terminal connected to a first pole of the first switch; and a second resistor including a first terminal connected to the opposing terminal of the first resistor, and a second terminal connected to a second pole of the first switch such that the second resistor is connected in parallel with the first switch, wherein the at least one second switch resistor comprises; a third resistor including a first terminal connected to both the second terminal of the second resistor and the second pole of the first switch, and a second terminal connected directly to a first pole of the second switch; and a fourth resistor including a first terminal connected directly to both the second terminal of the third resistor and the first pole of the second switch, the third resistor further including an opposing terminal connected directly to a second pole of the second switch such that the fourth resistor is connected in parallel with the second switch. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of simultaneously detecting switch states of a plurality of switches installed on an automotive vehicle, the method comprising:
generating a voltage potential across an input terminal and an output terminal of an input switching circuit, the input switching circuit comprising; a first switch assembly that includes a first switch that operates in a first plurality of switch states; and a second switch assembly connected in series with the first switch assembly, the second switch assembly including a second switch that operates in a second plurality of switch states, varying the voltage potential in response to adjusting a resistance of the input switching circuit, and based on the varied voltage potential, determining the first plurality of switch states independently from the second plurality of switch states, and determining the second plurality of switch states independently from the first plurality of switch states, determining a current operating state of the automotive vehicle from among a plurality of different operating states based on a combination of a determined switch state of the first switch assembly from among the first plurality of switch states and a determined switch state of the second switch assembly from among the second plurality of switch states. - View Dependent Claims (15, 16, 17)
Specification