Methods, systems, and devices for detecting and locating fluid leaks along a resistance cable

A system for monitoring a sense cable that comprises a source wire and a resistance wire, the system comprising:

• control circuitry;
• current measurement circuitry coupled with the control circuitry, wherein the control circuitry is configured for:
• determining a first current value of a first measured leak current at a near end of the resistance wire;
• determining a second current value of a second measured leak current at a far end of the resistance wire;
• and
• determining an approximate location of a leak coupling via a fluid between the source wire and the resistance wire based on the first current value, the second current value, and a resistance parameter of the resistance wire, wherein:
• the current measurement circuitry comprises switch circuitry;
• and
• the control circuitry is further configured for:
• when determining the first current value of the first measured leak current at the near end of the resistance wire, electrically decoupling the current measurement circuitry from the far end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the near end of the resistance wire via the switch circuitry;
• and
• when determining the second current value of the second measured leak current at the far end of the resistance wire, electrically decoupling the current measurement circuitry from the near end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the far end of the resistance wire via the switch circuitry.

A method implemented on at least one processor for monitoring a sense cable that comprises a source wire and a resistance wire, the method comprising:

• determining a first current value of a first measured leak current at a near end of the resistance wire via current monitoring circuitry;
• determining a second current value of a second measured leak current at a far end of the resistance wire via the current monitoring circuitry;
• determining an approximate location of a leak coupling via a fluid between the source wire and the resistance wire based on the first current value, the second current value, and resistance parameter of the resistance wire;
• and
• providing an indication of the approximate location via at least one of a user interface and a communication interface, wherein:
• the current measurement circuitry is configured for simultaneously providing:
• a first virtual threshold to the near end of the resistance wire;
• and
• a second virtual threshold to the far end of the resistance wire;
• and
• the first virtual threshold is approximately equal to the second virtual threshold.

A non-transitory computer-readable storage medium storing instructions to be implemented by at least one processor, the instructions when executed by the at least one processor provide a method for monitoring a sense cable that comprises a source wire and a resistance wire, the method comprising:

• determining a first current value of a first measured leak current at a near end of the resistance wire via current monitoring circuitry;
• determining a second current value of a second measured leak current at a far end of the resistance wire via the current monitoring circuitry;
• determining an approximate location of a leak coupling via a fluid between the source wire and the resistance wire based on the first current value, the second current value, and a resistance parameter of the resistance wire;
• and
• providing an indication of the approximate location via at least one of a user interface and a communication interface, wherein:
• the current measurement circuitry is configured for simultaneously providing:
• a first virtual threshold to the near end of the resistance wire;
• and
• a second virtual threshold to the far end of the resistance wire;
• and
• the first virtual threshold is approximately equal to the second virtual threshold.

A method implemented on at least one processor for monitoring a sense cable that comprises a source wire and a resistance wire, the method comprising:

• determining a first current value of a first measured leak current at a near end of the resistance wire via current monitoring circuitry;
• determining a second current value of a second measured leak current at a far end of the resistance wire via the current monitoring circuitry;
• determining an approximate location of a leak coupling via a fluid between the source wire and the resistance wire based on the first current value, the second current value, and resistance parameter of the resistance wire;
• and
• providing an indication of the approximate location via at least one of a user interface and a communication interface, wherein:
• the current measurement circuitry comprises switch circuitry;
• and
• the control circuitry is further configured for:
• when determining the first current value of the first measured leak current at the near end of the resistance wire, electrically decoupling the current measurement circuitry from the far end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the near end of the resistance wire via the switch circuitry;
• and
• when determining the second current value of the second measured leak current at the far end of the resistance wire, electrically decoupling the current measurement circuitry from the near end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the far end of the resistance wire via the switch circuitry.

A non-transitory computer-readable storage medium storing instructions to be implemented by at least one processor, the instructions when executed by the at least one processor provide a method for monitoring a sense cable that comprises a source wire and a resistance wire, the method comprising:

• determining a first current value of a first measured leak current at a near end of the resistance wire via current monitoring circuitry;
• determining a second current value of a second measured leak current at a far end of the resistance wire via the current monitoring circuitry;
• determining an approximate location of a leak coupling via a fluid between the source wire and the resistance wire based on the first current value, the second current value, and a resistance parameter of the resistance wire;
• and
• providing an indication of the approximate location via at least one of a user interface and a communication interface, wherein:
• the current measurement circuitry comprises switch circuitry;
• and
• the control circuitry is further configured for:
• when determining the first current value of the first measured leak current at the near end of the resistance wire, electrically decoupling the current measurement circuitry from the far end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the near end of the resistance wire via the switch circuitry;
• and
• when determining the second current value of the second measured leak current at the far end of the resistance wire, electrically decoupling the current measurement circuitry from the near end of the resistance wire via the switch circuitry and electrically coupling the current measurement circuitry to the far end of the resistance wire via the switch circuitry.