Configurable Radar Motion Detector Wireless Parameter Adjustment
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Solution Overview
Problem
Motion detectors integrated into building automation devices are difficult to access and configure, requiring disassembly and potentially disrupting other devices on the same supply line, which complicates parameter adjustments such as delay time, sensitivity, and sensor settings.
Innovation Solution
A radar-based motion detector with a control unit that evaluates radar signals for configuration parameters, allowing parameter changes via specific movement patterns or encoded signals, eliminating the need for physical access and reducing the necessity for safety measures and device disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the motion detector is integrated into a light fixture or building automation device, then the device becomes compact and integrated, but configuration and parameter adjustment become difficult requiring disassembly
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms (potentiometers, push buttons, screws) with wireless communication-based configuration. The control unit receives configuration data wirelessly via radio frequency signals, eliminating the need for physical access to adjustment mechanisms and resolving the contradiction between integrated compactness and configuration accessibility.
2Object-affected harmful factors
If adjustment mechanisms such as potentiometers, push buttons, or screws are made inaccessible when installed, then safety is improved, but configuration capability deteriorates
Solution Approach 1:
The patent replaces mechanical adjustment mechanisms with wireless configuration capability. The control unit can be reconfigured remotely via radio frequency signals, maintaining safety by keeping adjustment mechanisms inaccessible while preserving full configuration capability through wireless communication.
3Object-affected harmful factors
If the supply voltage is switched off for safety during configuration, then safety is improved, but functionality of other devices on the same supply line deteriorates
Solution Approach 1:
The patent replaces power-based configuration methods with wireless communication-based configuration. Configuration data is transmitted via radio frequency signals that do not require switching off the supply voltage, allowing safe remote configuration while maintaining continuous operation of the building automation system.
4Ease of operation
If configuration data is transmitted during regular predefined time intervals, then communication capability is improved, but detection accuracy deteriorates due to signal interference
Solution Approach 1:
The patent uses periodic communication intervals specifically designed for configuration data transmission. By scheduling configuration transmissions during predefined time intervals when motion detection is temporarily suspended or less critical, the system allows accurate configuration without permanently compromising detection accuracy.
Solution Approach 2:
The patent introduces a signal processing intermediary that distinguishes between configuration signals and motion detection signals. The control unit evaluates signal characteristics to differentiate configuration data from actual motion events, preventing false detections during configuration transmissions.
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 easy configuration of motion detector parameters without disassembling the device, reducing costs and safety concerns, while maintaining normal operation of connected devices like lights, by using radar signals to trigger parameter changes based on predefined criteria.
Implementation Method 1
a radar transmitter (7b) and a radar receiver (7a), wherein the control unit (5) is configured to use a received radar signal as a configuration signal
Data Source
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AI summary
In one aspect, a radar-based motion detector is provided, wherein the motion detector comprises: a radar transmitter, a radar receiver, and a control unit configured to control the radar transmitter to transmit and to evaluate radar signals received by the radar receiver, wherein the control unit is configured to use a received radar signal as a configuration signal for at least one operating parameter of the motion detector if the received radar signal meets a predetermined signaling criterion.