Dual-Bridge Force Sensor for Wireless Real-Time Data Checking
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Solution Overview
Problem
Existing force sensors in robots cannot wirelessly transmit data to external devices due to the integration of strain gauges with robot controllers, limiting real-time data checking from remote locations.
Innovation Solution
A force sensor equipped with a strain element, first and second bridge circuits for force and moment detection, and a wireless communication module to transmit data to a remote device, enabling real-time data checking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strain gauges are connected to robot controllers for force sensor operation, then the robot can operate based on force sensor data, but wireless communication modules cannot be connected to the strain gauges for remote data transmission
Solution Approach 1:
The patent divides the strain gauge system into two independent sets: first strain gauges connected to the robot controller for operational control, and second strain gauges connected to the wireless communication module for remote data transmission. This segmentation allows both robot operation and remote monitoring to function simultaneously without interference.
Solution Approach 2:
The patent introduces a wireless communication module as an intermediary component that receives data from the second bridge circuit (connected to second strain gauges) and transmits it to external devices. This intermediary enables remote data access without disrupting the existing connection between strain gauges and robot controller.
2Device complexity
If a single bridge circuit is used for force detection, then the structure remains simple, but real-time wireless data transmission to external devices cannot be achieved
Solution Approach 1:
The patent segments the bridge circuit system into a first bridge circuit for robot controller connection and a second bridge circuit for wireless communication module connection. This allows independent optimization of each circuit path without compromising the other.
Solution Approach 2:
The force sensor achieves multi-functionality by enabling the same sensor element to serve dual purposes: providing data to the robot controller through the first bridge circuit and simultaneously providing data to external devices through the second bridge circuit and wireless communication module.
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
Enables real-time data checking of force and moment data from remote locations, facilitating remote management of robot operations and work quality.
Implementation Method 1
a first bridge circuit that includes a first strain gauge group provided on the strain element and that detects a force in a specific direction which acts on the strain element or a moment about a specific axis which acts on the strain element
Data Source
AI summary
To check data outputted from a force sensor, in a real-time manner. The force sensor includes: a strain element; a first bridge circuit that includes a first strain gauge group provided on the strain element and that detects a force in a specific direction which acts on the strain element or a moment about a specific axis which acts on the strain element; a second bridge circuit that includes a second strain gauge group provided on the strain element and that detects a force in the same direction as the force detected by the first bridge circuit or a moment about the same axis as the moment detected by the first bridge circuit; and a wireless communication module that is connected to the second bridge circuit and that is configured to wirelessly transmit, to a first device, a signal outputted from the second bridge circuit.