External NFC Antenna for Motor Communication Range
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Solution Overview
Problem
Existing electric motors with internal electronic controls face challenges in radio-based communication due to limited signal range and interference from metal enclosures, making it difficult for users to interact with the motors safely and efficiently, especially when trying to retrofit communication capabilities.
Innovation Solution
An external NFC antenna is mounted on the motor controller, allowing signals to be received from a handheld device and relayed to the motor controller, extending the communication range outside the motor housing and enabling safe and efficient user interaction without the need for internal modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic controls are enclosed inside the motor housing to protect from environment, then reliability is improved, but communication range deteriorates
Solution Approach 1:
The patent introduces an external antenna as an intermediary component that mediates between the handheld device and the internal NFC antenna. This external antenna extends the magnetic field range beyond the motor housing, allowing communication without requiring the housing to be opened or the internal antenna to be accessed directly.
2Strength
If metal enclosure is used to protect motor components, then strength and protection are improved, but signal transmission deteriorates
Solution Approach 1:
The external antenna acts as a mediator that bypasses the metal enclosure's signal-blocking effect. By positioning the antenna externally and extending its magnetic field through the housing material, the system achieves signal transmission without compromising the protective metal enclosure.
3Reliability
If antenna is positioned inside motor housing, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent transitions the communication interface from a two-dimensional internal plane (inside the housing) to a three-dimensional external space. The external antenna projects the magnetic field beyond the housing boundaries, allowing users to communicate from various positions outside the motor without needing physical access to internal components.
4Adaptability or versatility
If NFC components are used for communication, then adaptability is improved, but communication range deteriorates
Solution Approach 1:
The external antenna serves as an intermediary that amplifies and extends the range of the internal NFC components. It takes the limited-range NFC signal and projects it externally, maintaining the adaptability of radio-based communication while overcoming the inherent range limitation of NFC technology.
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 solution allows users to control and configure electric motors from outside the housing, enhancing safety and reducing retrofitting costs by providing a reliable and efficient means of communication through an external antenna, improving operational parameter adjustments and diagnostics.
Implementation Method 1
an NFC system requires at least two inductive components that generate magnetic fields
Implementation Method 2
When the components' magnetic fields overlap, the components will inductively transfer their currents
Data Source
AI summary
An electric machine includes a motor assembly including a motor and a motor controller coupled to the motor and configured to control operation of the motor. The electric machine also includes a motor housing defining an interior space and enclosing the motor assembly within the interior space. The electric machine further includes an electric machine housing. The motor housing is enclosed within the electric machine housing. The electric machine also includes an NFC antenna communicatively coupled to the motor controller and mounted such that an antenna range of the NFC antenna extends on an exterior of the electric machine housing. The NFC antenna is configured to receive a signal relating to a user command from a handheld device and relay the signal to the motor controller. The motor controller is configured to adjust an operational parameter of the motor based at least partially on the user command.