Skin Measurement Indicator for Pressing Angle and Force
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Solution Overview
Problem
Existing skin condition measurement devices face challenges in accurately measuring moisture content and resilience due to unstable contact angles and pressing forces, leading to inconsistent and unreliable results.
Innovation Solution
A measurement device with movable components, including a case, a measurement auxiliary unit, and a sensor part, equipped with display parts that visually indicate the states of pressing angle and force, ensuring proper alignment and contact, thereby stabilizing the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a sensor including electrodes is pressed against derma via a spring to stabilize pressing force, then pressing force is stabilized, but contact angle is not stabilized and derma deformation occurs leading to unstable resilience
Solution Approach 1:
The probe is divided into two independent functional components: a guide surface portion that stabilizes contact angle and a sensor portion that applies pressing force. This segmentation allows each component to perform its specific function optimally without interfering with the other, resolving the contradiction between stabilizing pressing force and maintaining measurement reliability.
Solution Approach 2:
The guide surface acts as an intermediary element between the user's pressing action and the sensor. It first receives the pressing force, stabilizes the contact angle, and then transmits the force to the sensor, which subsequently measures the derma. This intermediary structure ensures both contact angle stability and reliable measurement.
2Area of stationary object
If a wide area plane probe end surface is used to press against skin, then contact area is increased, but pressure distribution becomes uneven on curved surfaces leading to unstable pressing force
Solution Approach 1:
The guide surface is designed with different local qualities: a wide area portion that contacts the skin to stabilize contact angle, and a narrower transmission portion that connects to the sensor. This local differentiation allows the probe to accommodate curved skin surfaces while maintaining uniform pressure transmission to the sensor.
Solution Approach 2:
The guide surface is designed with a curved configuration that can adapt to the curvature of skin surfaces. This curved design allows the wide area guide surface to maintain contact with curved surfaces while the transmission portion ensures uniform force transmission to the sensor, resolving the issue of uneven pressure distribution.
3Device complexity
If display means shows only sensor position relative to case, then device complexity is reduced, but human error cannot be prevented as appropriate pressing angle and force cannot be confirmed
Solution Approach 1:
The display mechanism uses color-coded regions to indicate different operational states: a first color region indicates proper contact angle, and a second color region indicates proper pressing force. This visual feedback system allows users to quickly confirm correct operation without complex displays, preventing human error while maintaining simple device architecture.
Solution Approach 2:
The display mechanism automatically provides feedback about pressing angle and force through the color-coded regions, allowing users to self-correct their technique without external assistance or complex electronic displays. The system serves itself by providing intuitive visual guidance that prevents human error.
Data Source
AI summary
Provided is an indicator for a measurement device for measuring skin conditions of a human, which can display degrees of progress in at least two kinds of states. The includes: a case; a measurement auxiliary unit slidably supported by the case; and a sensor part slidably supported by the measurement auxiliary unit. The indicator has: a window part formed in a side surface portion of the case; a first display part slidably supported inside the window part and connected to the measurement auxiliary unit; and a second display part slidably supported inside the window part and connected to the sensor part. A slide direction and slide amount of the first display part coincides with a slide direction and slide amount of the measurement auxiliary unit, and a slide direction and slide amount of the second display part coincide with a slide direction and slide amount of the sensor part.