Onboard monitoring of signal delay
AssigneeVolvo Truck Corporation
InventorFaouzi Al Mouatamid
Life of this patent
Estimating the term…
Abstract
A method of monitoring signal delay at a battery of a vehicle utilizes a switching circuitry. The switching circuitry has a first path comprising a first switch, a second path comprising a second switch, a parallel third path comprising a third switch and a resistor in series with the third switch. The method includes closing the first switch and opening the second switch closing the third switch detecting a change in an electric property of the battery in response to the closing of the third switch and determining the signal delay by determining a delay in the detected change in the electric property in response to the closing of the third switch.
Claims20
An electronic control unit configured to monitor signal delay at a battery of a vehicle by utilizing a switching circuitry, the switching circuitry comprising:
- a first path comprising a first switch configured to be controlled to selectively connect the battery to a load;
- a second path comprising a second switch configured to be controlled to selectively connect the battery to the load;
- a third path comprising a third switch configured to selectively connect the battery to the load and a resistor in series with the third switch, the third path being connected in parallel with the second path;
- electronic control unit being configured to:
- close the first switch and open the second switch;
- close the third switch;
- detect a change in an electric property of the battery in response to the closing of the third switch;
- determine the signal delay by determining a delay in the detected change in the electric property in response to the closing of the third switch.
A method of monitoring signal delay at a battery of a vehicle by utilizing a switching circuitry, the switching circuitry comprising:
- a first path comprising a first switch configured to be controlled to selectively connect the battery to a load;
- a second path comprising a second switch configured to be selectively connect the battery to the load;
- a third path comprising a third switch configured to selectively connect the battery to the load and a resistor in series with the third switch, the third path being connected in parallel with the second path;
- the method comprising:
- closing the first switch and opening the second switch;
- closing the third switch;
- detecting a change in an electric property of the battery in response to the closing of the third switch;
- determining the signal delay by determining a delay in the detected change in the electric property in response to the closing of the third switch.
Dependencies are inferred from the claim text.