System and method for establishing center of gravity

摘要

A system for establishing a center of gravity of a device under test (DUT) includes a test platform and a control device. The test platform includes three support elements and a marker. A sensor is positioned on top of each support element. The control device includes three processing modules and a central processing unit (CPU). Each sensor senses a pressure of the DUT on a support element, and outputs an analog signal to a processing module. Each processing module converts the analog signal into a digital signal, and outputs the digital signal to the CPU. The CPU controls the marker to make a mark on the DUT when values of three digital signals received from the three processing modules are equal.

主权项

1. A system to establish a center of gravity of a device under test (DUT), the system comprising:
a test platform comprising:
a base board;three support elements positioned on the base board, and arranged at three vertices of an equilateral triangle;a telescoping marker movably assembled on the base board to extend and retract, and located at the center of the equilateral triangle; andthree sensors respectively positioned on tops of the three support elements; and a control device comprising:
three processing modules respectively connected to the three sensors;a central processing unit (CPU) connected to the processing modules and the marker; anda display connected to the CPU; wherein each sensor senses a pressure of the DUT applied on a corresponding support element, and outputs an analog signal to a corresponding processing module; each processing module converts the received analog signal into a digital signal, and outputs the digital signal to the CPU; the CPU controls the display to display values of pressures sensed by the three sensors according to the digital signals received from the three processing modules, determines whether the values of the digital signals are equal, and controls the marker to extend to make a mark on a contact plane of the DUT contacting the sensors; wherein in response to a first contact plane of the DUT being supported on the three sensors and the values of the three digital signals being equal, the CPU controls the marker to extend to make a first mark on the first contact plane; wherein in response to a second contact plane intersecting with the first contact plane be supported on the three sensors and the values of the three digital signals being equal, the CPU controls the marker to extend to make a second mark on the second contact plane; and wherein a first line perpendicular to the first contact plane at the first mark is obtained, a second line perpendicular to the second contact plane at the second mark is obtained, and the center of gravity of the DUT at an intersection of the first line and the second line is obtained.