Vehicle Throttle Locking Circuit and Method Thereof
First Claim
1. A system for limiting speed of a vehicle, comprising:
- a controller, coupled to a pedal sensor and a control unit of the vehicle, for receiving a clamping actuation signal, wherein the pedal sensor outputs detection voltages and the control unit determines status of the vehicle; and
a variable voltage clamping device, coupling to the pedal sensor, the control unit, and said controller, for clamping the detection voltages from the pedal sensor to the control unit,wherein said controller, according to the detection voltages, outputs clamping voltage signals to said variable voltage clamping device to gradually lower the detection voltages to clamping voltages, when said controller receives the clamping actuation signal, if the vehicle is moving initially.
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Accused Products
Abstract
A vehicle throttle locking circuit and method are provided. A control unit receives detection voltages from a pedal sensor and, when a clamping actuation signal is ON, digital clamping voltages are gradually reduced according to the detection voltages. A D/A conversion unit converts the digital clamping voltages to analog clamping voltages. A variable voltage clamping unit clamps the detection voltages according to the analog clamping voltages. The gradual reduction of the digital clamping voltages are stopped when the detection voltages are already clamped at an idle condition so that the pedal is effectively locked at the idle condition. As such, the present invention not only provides anti-theft function, but also avoids traffic accident and hazard to the safety of the driver or passers due to the vehicle'"'"'s sudden loss of power.
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Citations
20 Claims
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1. A system for limiting speed of a vehicle, comprising:
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a controller, coupled to a pedal sensor and a control unit of the vehicle, for receiving a clamping actuation signal, wherein the pedal sensor outputs detection voltages and the control unit determines status of the vehicle; and a variable voltage clamping device, coupling to the pedal sensor, the control unit, and said controller, for clamping the detection voltages from the pedal sensor to the control unit, wherein said controller, according to the detection voltages, outputs clamping voltage signals to said variable voltage clamping device to gradually lower the detection voltages to clamping voltages, when said controller receives the clamping actuation signal, if the vehicle is moving initially. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
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12. The system according to claim n, wherein the clamping actuation signal is provided from a wireless communication module, such that an instruction for limiting speed of the vehicle can be sent from a mobile device.
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15. A system for limiting speed of a vehicle, comprising:
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a controller, coupled to a pedal sensor and a control unit of the vehicle, for receiving a clamping actuation signal, wherein the pedal sensor outputs a first detection voltage and a second detection voltage, and the control unit determines status of the vehicle; means for clamping the detection voltage, coupling to the pedal sensor, the control unit, and said controller, including a first variable voltage clamping unit for clamping the first detection voltage from the pedal sensor to the control unit and a second variable voltage clamping unit for clamping the second detection voltage from the pedal sensor to the control unit respectively, wherein said controller, according to the first detection voltage and the second detection voltage, outputs a first clamping voltage signal and a second clamping voltage signal to said clamping means to gradually lower the first detection voltage and the second detection voltage to the first clamping voltage and the second clamping voltage respectively. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification