Force Sensor Device Side-Mounted IC Integration
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Solution Overview
Problem
Conventional force sensor devices with external active components, such as ICs, result in increased device size due to the need for separate mounting spaces for each axis, leading to enlarged dimensions.
Innovation Solution
The integration of control ICs into a two-in-one package and placement on the side surfaces of the strain generator allows for the downsizing of the force sensor device while maintaining the ability to digitize and correct output signals without enlarging the device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If active components such as ICs are provided on the outside of the force sensor device, then signal processing functionality is achieved, but the total device size becomes greater
Solution Approach 1:
The patent integrates the active component (IC) directly into the sensor chip structure, merging the sensing element and signal processing unit into a single integrated device. This eliminates the need for separate external mounting of ICs while maintaining all signal processing functionalities, thereby resolving the contradiction between functionality and device size.
2Measurement precision
If multiple strain gauges are used to detect forces in multiple axes, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The integrated IC design enables a single sensor chip to perform multi-axis force detection through integrated strain gauge patterns and signal processing circuits. The universal design allows detection of forces in multiple directions (X, Y, Z axes) without requiring separate discrete components for each axis, thus improving measurement precision while reducing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the force sensor device to maintain functionality with improved noise tolerance and reduced size, allowing for efficient detection of forces and moments across multiple axes without increasing the overall device dimensions.
Implementation Method 1
a first detection beam 113a, a second detection beam 113e, both having the same length, the same width, and the same thickness
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3
AI summary
A force sensor device includes a sensor chip configured to detect displacement in a predetermined axis direction; a strain generator configured to transfer an applied force to the sensor chip; and an active component electrically connected with the sensor chip. The active component is placed on a side surface of the strain generator.