Truck compartment verification system with alternate truck ID
First Claim
1. A fluid overfill detection and control system for controlling the transfer of fluid into a transport vehicle having multiple fluid compartments, the system comprising:
- a plurality of overfill sensors, wherein each sensor is associated with a respective fluid compartment and produces a respective output pulse in response to a respective input pulse when a detected fluid level in the respective compartment is below a threshold level, and which does not produce the respective output pulse when the fluid level in the respective compartment has reached or exceeded the threshold level, and wherein the overfill sensors are arranged in series with one another such that the output pulse of one overfill sensor is provided as the input pulse to a next overfill sensor;
a controller that regulates the transfer of fluid into the transport vehicle and that provides an initial input pulse to a first overfill sensor in the series of overfill sensors and receives a last output pulse from a last overfill sensor in the series of overfill sensors, and that inhibits the transfer of fluid into the vehicle if the last output pulse is not received;
a diagnostic line connected to each of the overfill sensors, the diagnostic line providing a diagnostic signal to the controller indicative of a number of the overfill sensors that generate a respective output pulse; and
a sensor count signal source that provides a sensor count signal to the controller indicative of a total number of overfill sensors located in the vehicle, the controller comparing the sensor count signal to the diagnostic signal and inhibiting the transfer of fluid into the vehicle if the number of overfill sensors indicated by the diagnostic signal does not match the number of overfill sensors indicated by the sensor count signal,wherein the diagnostic signal has an initial value, andwherein each overfill sensor is configured to modify the diagnostic signal from the initial value by a predetermined amount when producing the respective output pulse.
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Accused Products
Abstract
A fluid overfill detection and control system for controlling the transfer of fluid into a transport vehicle having multiple fluid compartments includes a plurality of overfill sensors that are connected in series with one another and that each produces an output pulse when the fluid level in its associated compartment is below a threshold level. A diagnostic line connected to each of the overfill sensors provides a diagnostic signal indicative of the number of overfill sensors that generate an output pulse, while a module on the vehicle provides an indication of the total number of overfill sensors located in the vehicle. To prevent a hazard due to the possible bypass of a overfill sensor, the controller compares the overfill sensor count signal to the diagnostic signal and inhibits the transfer of fluid into the vehicle if the values do not match.
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Citations
22 Claims
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1. A fluid overfill detection and control system for controlling the transfer of fluid into a transport vehicle having multiple fluid compartments, the system comprising:
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a plurality of overfill sensors, wherein each sensor is associated with a respective fluid compartment and produces a respective output pulse in response to a respective input pulse when a detected fluid level in the respective compartment is below a threshold level, and which does not produce the respective output pulse when the fluid level in the respective compartment has reached or exceeded the threshold level, and wherein the overfill sensors are arranged in series with one another such that the output pulse of one overfill sensor is provided as the input pulse to a next overfill sensor; a controller that regulates the transfer of fluid into the transport vehicle and that provides an initial input pulse to a first overfill sensor in the series of overfill sensors and receives a last output pulse from a last overfill sensor in the series of overfill sensors, and that inhibits the transfer of fluid into the vehicle if the last output pulse is not received; a diagnostic line connected to each of the overfill sensors, the diagnostic line providing a diagnostic signal to the controller indicative of a number of the overfill sensors that generate a respective output pulse; and a sensor count signal source that provides a sensor count signal to the controller indicative of a total number of overfill sensors located in the vehicle, the controller comparing the sensor count signal to the diagnostic signal and inhibiting the transfer of fluid into the vehicle if the number of overfill sensors indicated by the diagnostic signal does not match the number of overfill sensors indicated by the sensor count signal, wherein the diagnostic signal has an initial value, and wherein each overfill sensor is configured to modify the diagnostic signal from the initial value by a predetermined amount when producing the respective output pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of controlling the transfer of fluid into a transport vehicle having multiple fluid compartments and a plurality of overfill sensors each associated with a respective compartment and each producing a respective output pulse in response to a received input pulse when a detected fluid level in the respective compartment is below a threshold level, the overfill sensors being arranged in series with one another such that the output pulse of one is provided as the input pulse to a next overfill sensor in series, the method comprising:
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providing, with a controller that regulates the transfer of fluid into the vehicle, an initial input pulse to a first overfill sensor in the series of overfill sensors; monitoring, with the controller, for the presence of a last output pulse from a last overfill sensor in the series of overfill sensors and inhibiting the transfer of fluid into the vehicle if the last output pulse is not detected; receiving, with the controller, a diagnostic signal from a diagnostic line connected to each of the overfill sensors, the diagnostic signal being indicative of a number of overfill sensors that each generates an output pulse, wherein the diagnostic signal has an initial value; comparing, with the controller, the diagnostic signal to an overfill sensor count signal indicative of the total number of overfill sensors located in the vehicle; inhibiting, with the controller, the transfer of fluid into the vehicle if the number of overfill sensors indicated by the diagnostic signal does not match the number of overfill sensors indicated by the overfill sensor count signal; and modifying, with each overfill sensor, the diagnostic signal from the initial value by a predetermined amount when producing the respective output pulse. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A system for controlling the transfer of fluid into a transport vehicle having a plurality of compartments, the system comprising:
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a plurality of active overfill sensors, each active overfill sensor associated with a respective compartment and configured to produce a respective output pulse, in response to a respective input pulse, only when a detected fluid level in its associated compartment is below a threshold level; a number of dummy overfill sensors, each dummy overfill sensor configured to produce a respective output pulse in response to a respective input pulse, wherein a total number of dummy overfill sensors and overfill sensors is a first predetermined number and wherein the dummy and overfill sensors are arranged in series with one another such that the output pulse of one sensor is provided as the input pulse to a next sensor; a diagnostic line connected to each of the active and dummy overfill sensors, the diagnostic line configured to provide a diagnostic signal indicative of a number of active and dummy overfill sensors that each generates an output pulse, wherein the diagnostic signal has an initial value; wherein each active and dummy overfill sensor is configured to modify the diagnostic signal from the initial value by a predetermined amount when producing the respective output pulse; and a controller configured to regulate transfer of fluid into the transport vehicle, the controller further configured to; retrieve an expected value representing an expected total number of active and dummy overfill sensors and dummy overfill sensors to be detected on the vehicle; provide an initial input pulse to a first sensor in the series of sensors on the vehicle; detect the presence or absence of a last output pulse from a last overfill sensor in the series, in response to the initial input pulse; detect a value of the diagnostic signal on the diagnostic line; determine if the detected value of the diagnostic signal corresponds to the expected total number of active and dummy overfill sensors; and prevent the transfer of fluid into the vehicle if; the detected diagnostic signal value does not correspond to the expected total number;
orthe last output pulse was not detected. - View Dependent Claims (22)
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Specification