Vehicular crash test measuring system
View Patent ↗A fixture for positioning an ATD relative to a vehicle includes a housing attached to the vehicle having a first end and a second end. A locator is mounted on the housing and is movable along the housing between the first end and the second end to identify a position of the ATD relative to the housing. A target is disposed on the ATD and is spaced apart from the housing for alignment with the locator. A first measurement device outputs an angle of the housing that identifies an angular position of the target relative to a plane extending through the first end of the housing.
1. A fixture for positioning an automotive test dummy relative to a vehicle, the fixture comprising:
a housing attached to the vehicle and including a first end and a second end;
a locator mounted on said housing and movable along said housing between said first end and said second end to identify a position of the automotive test dummy relative to the housing;
a target disposed on the automotive test dummy and spaced apart from said housing for alignment with said locator; and
a first measurement device outputting an angle of said housing to identify an angular position of said target relative to a plane extending through said first end of said housing.
2. The fixture of claim 1 , wherein said housing is pivotally attached to the vehicle at said first end.
3. The fixture of claim 2 , wherein said first end is attached to a door opening of the vehicle.
4. The fixture of claim 2 , wherein said first end is attached to a striker mounted in a door frame of the vehicle.
5. The fixture of claim 1 , further comprising a laser pointer mounted on said locator.
6. The fixture of claim 5 , wherein said laser pointer is movable with said locator along said housing between said first end and said second end, said laser pointer generating a laser to position said locater and said housing relative to said target.
7. The fixture of claim 1 , further comprising a second measurement device mounted to said housing to identify a position of said locator along said housing between said first end and said second end.
8. The fixture of claim 7 , wherein said second measurement device includes a series of graduations to identify a position of said locator relative to said housing between said first end and said second end.
9. The fixture of claim 7 , wherein said second measurement device includes a potentiometer interacting with said locator to generate a signal indicative of a position of said locator between said first end and said second end of said housing.
10. The fixture of claim 7 , further comprising a controller in communication with said first measurement device and said second measurement device, said controller determining a position of said target relative to the vehicle based on a signal received from said first measurement device and a signal received from said second measurement device and outputting a signal indicative of said position of said target relative to the vehicle.
11. A method of positioning an automotive test dummy relative to a vehicle, the method comprising:
positioning the automotive test dummy in the vehicle;
attaching a first end of a housing to a vehicle opening;
rotating said housing relative to the vehicle to position said housing relative to the automotive test dummy;
translating a locator slidably attached to said housing between a first end of said housing and a second end of said housing to position said locator relative to said target disposed on the automotive test dummy;
identifying a position of said locator along said housing between said first end and said second end;
identifying an angle of said housing relative to a plane intersecting a pivot point of said housing; and
determining a position of said target relative to the vehicle opening based on said position of said locator along said housing between said first end and said second end and said angle of said housing relative to said plane.
12. The method of claim 11 , wherein said positioning said locator relative to said target includes generating a laser and positioning said laser relative to said target.
13. The method of claim 11 , wherein said determining said position of the automotive test dummy relative to the vehicle opening includes multiplying a distance of said locator from said first end of said housing by the sine of said identified angle to determine a position of said target along a first axis.
14. The method of claim 11 , wherein said determining said position of said target relative to the vehicle opening includes multiplying a distance of said locator from said first end of said housing by the cosine of said identified angle to determine a position of said target along a second axis.
15. The method of claim 11 , further comprising transmitting said identified position of said locator along said housing and said identified angular position of said housing to a controller.
16. The method of claim 15 , wherein said determining said position of said target relative to the vehicle opening is performed by said controller.
17. The method of claim 11 , wherein said determining said position of said target includes determining at least one of a position of a head, a hip, and a knee of the automotive test dummy.
18. The method of claim 11 , further comprising adjusting a position of the automotive test dummy relative to the vehicle opening based on said position of said target relative to said vehicle opening.
19. The method of claim 11 , further comprising comparing said determined position of said target relative to the vehicle opening and outputting an error.
20. The method of claim 19 , further comprising adjusting a position of the automotive test dummy based on said error.