Wearable Torque Sensing With Wireless Power and Data Transfer
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Solution Overview
Problem
The existing wearable apparatuses face challenges in reducing size and weight due to the presence of wires and connectors for power and data transmission, which are twisted during motor rotation, and the use of hollow motors increases volume and weight.
Innovation Solution
Implementing wireless power transmission and communication to connect a torque sensor module, using a wireless power transmitter and receiver to supply power and transmit torque data without wires, thereby reducing the need for physical connections and minimizing size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires and connectors are used to transmit power and data to the torque sensor module, then the sensor module can receive power and transmit data, but the wearable apparatus size and weight increase
Solution Approach 1:
The patent replaces the mechanical wire-based power transmission system with a wireless electromagnetic field-based power transmission system. The wireless power transmitter generates electromagnetic fields that induce current in the torque sensor module without physical contact, eliminating the need for wires and connectors while maintaining reliable power supply.
Solution Approach 2:
The patent extracts and removes the wires and connectors from the system by implementing wireless power transmission. The torque sensor module is designed to receive power wirelessly, completely eliminating the heavy wire infrastructure from the wearable apparatus.
2Loss of information
If wires are connected to the sensor in the output link, then the sensor can transmit sensing data, but the wires become twisted during motor rotation
Solution Approach 1:
The patent replaces the mechanical wire-based data transmission system with a wireless communication system. The torque sensor module transmits sensing data wirelessly to the controller using electromagnetic fields, eliminating physical wires that would twist and tangle during motor rotation.
3Ease of operation
If a hollow motor is used to accommodate wires, then wires can be connected to the sensor through the hole, but the volume of the driving module increases
Solution Approach 1:
The patent extracts and eliminates the need for the hollow motor structure by implementing wireless power transmission. The motor becomes solid without requiring internal holes for wire passage, as power is transmitted wirelessly to the torque sensor module.
4Reliability
If connectors are used for power and data transmission, then reliable connections can be established, but the weight of the wearable apparatus increases
Solution Approach 1:
The patent replaces the mechanical connector system with a wireless electromagnetic field-based transmission system. Power and data are transmitted through electromagnetic fields without physical connectors, eliminating the weight of connectors while maintaining reliable transmission through field-based communication.
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 allows for a more compact and lightweight wearable apparatus by eliminating the need for wires and connectors, while ensuring precise alignment and compatibility of power transmission coils, facilitating a simplified charging protocol and efficient data communication.
Implementation Method 1
a wireless power transmitter configured to perform wireless power transmission
Implementation Method 2
a wireless power receiver configured to receive wireless power transmitted by the wireless power transmitter, convert the received wireless power, supply the converted wireless power to the torque sensor module
Data Source
AI summary
Disclosed is a wearable apparatus to be worn on a body of a user, the wearable apparatus including a driving module configured to generate power to be applied to the user, an output link connected to the driving module, the output link including a torque sensor module configured to generate torque data by measuring a torque generated by at least one of an operation of the driving module and a motion of the user, a wireless power transmitter configured to perform wireless power transmission, a wireless power receiver configured to receive wireless power transmitted by the wireless power transmitter, convert the received wireless power, supply the converted wireless power to the torque sensor module, receive the torque data from the torque sensor module, and transmit the received torque data to the power transmitter, and a processor configured to receive the torque data from the wireless power transmitter through the driving module, generate a control signal for controlling the driving module based on the torque data and motion information of the user, and control the driving module based on the generated control signal.