Current driving system for a solenoid
First Claim
1. A current driving system for a solenoid valve, comprising:
- a pre-driver to control a control input of a transistor coupled to an electrical input of a solenoid valve, wherein the transistor supplies electric power to the solenoid valve when the transistor is switched on;
a signal generator to generate a small signal and to output the small signal to the electrical input of the solenoid valve, wherein an amount of electric power of the small signal input to the solenoid valve is substantially smaller than an amount of the electric power supplied by the transistor to the solenoid valve when the transistor is switched on;
a capacitor comprising a first electrode and a second electrode, wherein the first electrode is connected to an output of the signal generator, and wherein the second electrode is connected to the electrical input of the solenoid valve; and
a measurement unit to measure a response to the small signal.
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Accused Products
Abstract
A current driving system for a solenoid valve is described herein. In an embodiment, the current driving system comprises a pre-driver to control a control input of a transistor coupled to an electrical input of a solenoid valve. The transistor inducts electric power into the solenoid valve when the transistor is switched on.
The current driving system further comprises a signal generator to produce a small signal and to output the small signal to the electrical input of the solenoid valve. The electric power being supplied by the small signal into the solenoid valve is substantially smaller than the electric power being supplied by the transistor when the transistor is switched on. The current driving system further comprises a measurement unit to measure a response to the small signal at the electrical input of the solenoid valve.
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Citations
17 Claims
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1. A current driving system for a solenoid valve, comprising:
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a pre-driver to control a control input of a transistor coupled to an electrical input of a solenoid valve, wherein the transistor supplies electric power to the solenoid valve when the transistor is switched on; a signal generator to generate a small signal and to output the small signal to the electrical input of the solenoid valve, wherein an amount of electric power of the small signal input to the solenoid valve is substantially smaller than an amount of the electric power supplied by the transistor to the solenoid valve when the transistor is switched on; a capacitor comprising a first electrode and a second electrode, wherein the first electrode is connected to an output of the signal generator, and wherein the second electrode is connected to the electrical input of the solenoid valve; and a measurement unit to measure a response to the small signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for controlling a solenoid valve, comprising:
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generating, by a signal generator, a small signal; outputting, by the signal generator and via a capacitor, the small signal to an electrical input of the solenoid valve, wherein a first electrode of the capacitor is coupled to the signal generator and a second electrode of the capacitor is coupled to the electrical input of the solenoid valve; measuring, using a measurement unit, a response to the coupled small signal at the electrical input of the solenoid valve. - View Dependent Claims (16, 17)
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Specification