System, controller and method for testing a solenoid
First Claim
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1. A controller for a braking system comprising:
- a battery power port;
an isolating device electrically connected to the battery power port;
a first power switch electrically connected to the isolating device;
a first high solenoid port electrically connected to the first power switch and configured to electrically connect to an associated first solenoid;
a low solenoid port configured to electrically connect to the associated first solenoid;
a voltage regulator electrically connected to the battery power port and the first high solenoid port;
control logic electrically connected to the voltage regulator, the first power switch, and the isolating device;
wherein the control logic is capable of determining a voltage rating of the associated first solenoid; and
a port for receiving a signal indicative of ignition power and the control logic is capable of determining the voltage rating of the associated first solenoid upon receiving the signal indicative of ignition power.
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Abstract
Various embodiments for determining a voltage rating of a solenoid in an electropneumatic valve are disclosed. A braking system controller comprises a power switch electrically connected to an associated first solenoid. The power switch provides a low current regulated voltage to the associated first solenoid. The current through the solenoid is converted to a voltage. The voltage is compared to a predetermined voltage range to determine the voltage rating of the associated first solenoid. In another embodiment, the control logic is capable of determining the voltage rating of multiple solenoids in each of the electropneumatic valves connected to the controller.
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Citations
33 Claims
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1. A controller for a braking system comprising:
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a battery power port; an isolating device electrically connected to the battery power port; a first power switch electrically connected to the isolating device; a first high solenoid port electrically connected to the first power switch and configured to electrically connect to an associated first solenoid; a low solenoid port configured to electrically connect to the associated first solenoid; a voltage regulator electrically connected to the battery power port and the first high solenoid port; control logic electrically connected to the voltage regulator, the first power switch, and the isolating device;
wherein the control logic is capable of determining a voltage rating of the associated first solenoid; anda port for receiving a signal indicative of ignition power and the control logic is capable of determining the voltage rating of the associated first solenoid upon receiving the signal indicative of ignition power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for determining a voltage rating of a solenoid for a braking system comprising:
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receiving battery power at a battery power port of a controller; receiving a signal indicative of ignition power; disconnecting battery power from a first power switch at an isolation device upon receiving the signal indicative of ignition power; providing a regulated voltage based on the battery power at the first power switch; activating the first power switch to provide the regulated voltage to a first solenoid through a high solenoid port; deactivating a ground switch when the first power switch is activated; receiving a current through the first solenoid at a low solenoid port; and determining the voltage rating of the first solenoid based on the current received at a low solenoid port. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for determining a voltage rating of a solenoid comprising:
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a controller containing control logic; a first solenoid electrically connected to the controller; a battery power source connected to the controller; an input at the controller for receiving a signal indicative of ignition power; the control logic capable of determining a voltage rating of the first solenoid, the determining comprising; isolating the battery power source from the first solenoid; providing a regulated voltage to the first solenoid in response to the signal indicative of ignition power; receiving a voltage corresponding to a current through the first solenoid; and determining the voltage rating of the first solenoid based on the received voltage. - View Dependent Claims (30, 31, 32, 33)
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Specification