Ultrasonic Time-Slot Device Control Without UWB Hardware
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Solution Overview
Problem
Existing intelligent home device control methods are tedious and complex, requiring multiple app interactions, and the use of ultra-wideband (UWB) technology is limited by hardware availability and precision issues, especially when UWB modules are not integrated, leading to increased costs and reduced detection accuracy.
Innovation Solution
A communication method utilizing ultrasonic signals for control between a master device and controlled devices, employing time division mode to increase capacity and precision without additional hardware, using existing loudspeakers and microphones for acoustic emitters and receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB technology is used for device control, then detection precision and control accuracy are improved, but hardware cost increases and hardware availability is reduced
Solution Approach 1:
The patent replaces the UWB (electromagnetic) communication system with an acoustic communication system using ultrasonic waves. The master device and controlled devices use existing loudspeakers and microphones to transmit and receive ultrasonic signals, eliminating the need for specialized UWB hardware modules. This substitution maintains detection precision through acoustic signal processing while significantly reducing hardware costs and improving universality across different device types.
Solution Approach 2:
The patent creates an acoustic signal copy of the UWB communication function. Instead of using electromagnetic waves directly, it transmits equivalent control information through ultrasonic acoustic waves that can be detected and processed similarly to how UWB signals would be handled, achieving the same control functionality with different physical medium.
2Adaptability or versatility
If multiple controlled devices are managed through traditional methods, then control coverage is maintained, but operation complexity increases
Solution Approach 1:
The patent segments the control process into distinct phases: the master device sends detection timing information to multiple controlled devices, each controlled device independently generates ultrasonic sweep signals at its assigned timing, and the master device receives and processes signals from multiple devices. This segmentation allows multiple devices to be controlled simultaneously without increasing operational complexity for the user.
Solution Approach 2:
Each controlled device autonomously generates and transmits its ultrasonic sweep signal at the detection timing received from the master device. The devices self-organize their communication without requiring manual configuration or complex user intervention, enabling the master device to manage multiple controlled devices through simple one-finger operation.
3Productivity
If time division mode is used for ultrasonic communication, then system capacity and detection precision are improved, but time coordination complexity increases
Solution Approach 1:
The master device performs preliminary action by sending detection timing information to each controlled device before the ultrasonic communication process begins. Each controlled device receives and stores its assigned detection timing, ensuring that when the communication occurs, all devices are already synchronized and ready to transmit at the correct time slots without requiring complex real-time coordination.
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 efficient, cost-effective, and universal control of multiple devices through one-finger operation, enhancing detection precision and system capacity while avoiding the need for UWB modules, thus improving user experience and reducing costs.
Implementation Method 1
sending an ultrasonic sweep signal at the response time
Implementation Method 2
receiving, in each time slot in the detection cycle, an ultrasonic sweep signal sent by the controlled device
Data Source
AI summary
A communication method, applied to a master device, includes: determining, according to the number of controlled devices and a preset time slot length, detection cycles and detection timing of various controlled devices in a detection cycle; receiving, in a time slot in the detection cycle, an ultrasonic sweep signal sent by the controlled device; and determining, according to the detection timing and the ultrasonic sweep signal, a detection result of the master device and a controlled device.