CMM Probe GUI Control via Display Screen Activation
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Solution Overview
Problem
The operation of portable three-dimensional coordinate measuring machines (CMMs) is inefficient due to the need for frequent switching between using the probe and computer input devices, such as a mouse or keyboard, to select operational modes and perform measurements.
Innovation Solution
An off-line graphical user interface (GUI) system that allows control of a CMM using the probe, where a GUI image with control operation icons is displayed and the controller defines coordinates and function activation zones within the CMM's coordinate system, enabling operational functions to be activated by moving the probe within these zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user uses a mouse or keyboard to select operational modes on the CMM computer, then the operational mode can be changed, but the user must repeatedly release the probe, use computer input devices, and then pick up the probe again, which is time-consuming and reduces productivity
Solution Approach 1:
The patent combines the probe with the computer input functionality by enabling the probe to serve dual purposes: both for making measurement touches and for selecting operational modes. The probe incorporates a switch that detects when it is placed on the display screen, allowing mode selection without releasing the probe. This merging eliminates the need to switch between separate input devices and the probe, thereby improving productivity while maintaining ease of operation.
2Adaptability or versatility
If the user uses hand-operated mouse or keyboard input devices to control the CMM, then operational functions can be selected, but the back-and-forth handling between input devices and the probe increases operational complexity and time consumption
Solution Approach 1:
The probe is designed to perform multiple functions: it serves as both the measurement tool for touching object points and as the input device for selecting operational modes. The switch mechanism within the probe detects its position relative to the display screen, enabling the same physical object (the probe) to execute different functions based on its location. This multi-functionality eliminates the need for separate input devices, reducing time loss while maintaining full control capability.
3Reliability
If the CMM requires separate input devices for mode selection, then precise control is achieved, but the operational process becomes tedious and inefficient due to repeated probe release and pickup
Solution Approach 1:
The system enables the probe to control itself by incorporating a switch that detects when the probe is positioned on the display screen. This self-service mechanism allows the probe to trigger mode selections and control functions without requiring external input devices. The probe's own position and movement are used to activate control functions, eliminating the need for separate controlling devices while maintaining reliable and precise control, thereby improving measurement throughput.
Data Source
AI summary
An off-line graphical user interface (GUI) system and method provide for input control of a three-dimensional coordinate measuring machine (CMM) using the CMM's probe. A GUI image presents a plurality of control operation icons associated with the CMM. A controller uses the CMM to locate the GUI image in a coordinate system of the CMM. The controller defines coordinates of the control operation icons and references the coordinates to the coordinate system of the CMM. The controller also defines a function activation zone associated with each of the control operation icons. Each function activation zone defines criteria relating movement of the CMM's probe therein to the operational function of the CMM associated with one of the control operation icons corresponding thereto. Satisfaction of the criteria causes the operational function of the CMM to be carried out by the CMM.


