Power door safety locking system
First Claim
1. A safety locking system comprising:
- a central processing unit having an input and an output, the input to receive a low signal, a high signal, or a pulsed signal oscillating between the low signal and the high signal; and
a safety switch electrically connected to the input of the central processing unit, the safety switch having an enabled state and a disabled state,wherein the input receives the low signal when the safety switch is in the enabled state,wherein the input receives the pulsed signal when the safety switch is in the disabled state,wherein the central processing unit detects an open fault condition when the input receives the high signal for a time period greater than a threshold time period, andwherein the central processing unit detects a ground fault condition when the input receives the low signal and the safety switch operates as if the safety switch is in the disabled state.
1 Assignment
0 Petitions
Accused Products
Abstract
A safety locking system is provided to detect an open fault or a ground fault condition. The safety locking system includes a central processing unit with an input and an output, and a safety switch electrically connected to the input of the central processing unit. The input receives a low signal when the safety switch is in an enabled state and a pulsed signal when the safety switch is in a disabled state. The central processing unit detects an open fault condition when the input receives a high signal for a time period greater than a threshold time period, and a ground fault condition when the input receives the low signal and the safety switch operates as if the safety switch is in the disabled state.
-
Citations
18 Claims
-
1. A safety locking system comprising:
-
a central processing unit having an input and an output, the input to receive a low signal, a high signal, or a pulsed signal oscillating between the low signal and the high signal; and a safety switch electrically connected to the input of the central processing unit, the safety switch having an enabled state and a disabled state, wherein the input receives the low signal when the safety switch is in the enabled state, wherein the input receives the pulsed signal when the safety switch is in the disabled state, wherein the central processing unit detects an open fault condition when the input receives the high signal for a time period greater than a threshold time period, and wherein the central processing unit detects a ground fault condition when the input receives the low signal and the safety switch operates as if the safety switch is in the disabled state. - View Dependent Claims (2, 3, 4)
-
-
5. A power door assembly for a vehicle comprising:
-
a power door; a first latch to latch the power door in a closed position; an inner handle to manually disengage the first latch; an inner handle switch activated by the inner handle to electrically disengage the power door from the first latch; a rear switch to electrically disengage the power door from the first latch when activated; and a safety locking system, the safety locking system including; a central processing unit having an input and an output, the input to receive a low signal, a high signal, or a pulsed signal oscillating between the low signal and the high signal; and a safety switch electrically connected to the input of the central processing unit, the safety switch having an enabled state and a disabled state, wherein the input receives the low signal when the safety switch is in the enabled state, wherein the input receives the pulsed signal when the safety switch is in the disabled state, wherein the central processing unit detects an open fault condition when the input receives the high signal for a time period greater than a threshold time period, and wherein the central processing unit detects a ground fault condition when the input receives the low signal and the power door moves from the closed position to an open position when the inner handle switch is activated. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of detecting a fault condition of a safety switch of a safety locking system for a vehicle power door assembly via a central processing unit associated with the safety locking system, the safety switch having an enabled condition wherein the power door is prevented from moving from a closed position to an open position and a disabled condition wherein the power door is not prevented from moving from the closed position to the open position, the method comprising:
-
detecting a low signal via the central processing unit when the safety switch is in the enabled condition at an input of the central processing unit; detecting a pulsed signal via the central processing unit when the safety switch is in the disabled condition at the input of the central processing unit; detecting an open fault condition in the safety locking system via the central processing unit by detecting a high signal at the input of the central processing unit for a time period longer than a threshold time period; and detecting a ground fault condition in the safety locking system via the central processing unit by detecting a low signal at the input of the central processing unit when the power door is moved from the closed position to the open position. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification