Collision monitoring system
DCFirst Claim
1. A method for detecting the presence of an object caught between a closure and its respective frame of a power system comprising:
- providing a closure for opening and closing via a regulator driven by an electric drive motor controlled by a control circuit;
calculating a predicted variable parameter value utilizing a system equation, said system equation including a number of coefficients which are multiplied by a number of different parameter values measured over a period of time, such that said predicted variable parameter value for any one of a series of different times is based upon a plurality of measured parameter values measured over a period of time;
sensing a variable parameter value of the power system during closing of the closure;
comparing said sensed variable parameter value to a previously predicted variable parameter value based upon a presumption of how said predicted variable parameter value would behave without the presence of an object; and
detecting an object caught between the closure and its respective frame based on the result of the compared parameter values.
3 Assignments
Litigations
1 Petition
Accused Products
Abstract
Disclosed is an improved system and method for sensing both hard and soft obstructions for a movable panel such as a sunroof. A dual detection scheme is employing that includes an optical sensing as the primary means and electronic sensing of motor current as a secondary means. The secondary means utilizes system empirical precharacterization, fast processing algorithms, motor parameter monitoring including both current sensing and sensorless electronic motor current commutation pulse sensing, and controller memory, to adaptively modify electronic obstacle detection thresholds in real time without the use of templates and cycle averaging techniques.
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Citations
24 Claims
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1. A method for detecting the presence of an object caught between a closure and its respective frame of a power system comprising:
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providing a closure for opening and closing via a regulator driven by an electric drive motor controlled by a control circuit; calculating a predicted variable parameter value utilizing a system equation, said system equation including a number of coefficients which are multiplied by a number of different parameter values measured over a period of time, such that said predicted variable parameter value for any one of a series of different times is based upon a plurality of measured parameter values measured over a period of time; sensing a variable parameter value of the power system during closing of the closure; comparing said sensed variable parameter value to a previously predicted variable parameter value based upon a presumption of how said predicted variable parameter value would behave without the presence of an object; and detecting an object caught between the closure and its respective frame based on the result of the compared parameter values. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for detecting the presence of an object caught between a closure and its respective frame of a power system comprising:
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providing a closure for opening and closing via being driven by an electric drive motor controlled by a control circuit; calculating a variable parameter value utilizing a system equation, said system equation including a number of coefficients which are multiplied by a number of different parameter values measured over a period of time, such that said variable parameter value for any one of a series of different times is based upon a plurality of measured parameter values measured over a period of time; sensing a variable parameter value of the power system during closing of the closure; comparing said sensed variable parameter value to a previously calculated variable parameter value based upon a presumption of how said predicted variable parameter value would behave without the presence of an object; and detecting an object caught between the closure and its respective frame based on the result of the compared parameter values. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for controlling activation of a motor for moving a window or panel along a path of travel and de-activating the motor if an obstacle is encountered during movement of the window or panel along its path of travel, the method comprising:
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measuring a parameter of the motor that varies in response to the window or panel encountering an obstacle while moving along its path of travel; calculating a threshold value utilizing a system equation, said system equation including a number of coefficients which are multiplied by a number of different parameter values measured over a period of time, such that said threshold value for any one of a series of different times is based upon a plurality of measured parameter values measured over a period of time; sensing a value of the parameter during movement of the window or panel along its path of travel; and determining if an obstacle has been encountered by the window or panel by comparing the sensed parameter value to the previously calculated threshold value based upon a presumption of how said calculated threshold value would behave without encountering an obstacle. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A power closure system comprising:
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a closure opening and closing via a regulator that is driven by an electric drive motor which is controlled by a motor control circuit; a sensor for sensing a variable parameter value of the power system; and a digital control circuit in communication with said sensor for comparing the sensed variable parameter value during closing of the closure to a previously predicted variable parameter value calculated utilizing a system equation which includes coefficients multiplied by parameter values from various locations through a path of movement of said closure and providing an indication of how said predicted variable parameter value would behave without the presence of an object in order to detect an object caught between the closure and its respective frame based on the result of the compared parameter values. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification