Radar Sensor Power Management via Dynamic Target Detection
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Solution Overview
Problem
Radar systems face challenges in balancing power consumption with accuracy, as increasing power can improve detection and tracking but also leads to higher operational costs and heat generation, while reducing false detections requires further power increases or sophisticated signal processing.
Innovation Solution
An apparatus and method utilizing processing circuitry to determine the presence and range of moving objects in a radar sensor's field of view, activating a radar target function based on the range, which controls device operations using radar data, thereby optimizing power consumption and reducing false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power consumption is increased to improve detection and tracking accuracy, then the radar's ability to accurately detect and track targets is improved, but operational costs and heat generation increase
Solution Approach 1:
The radar system dynamically adjusts its operational mode based on detected target characteristics. When a moving object is detected within a predetermined range, the system activates high-power detection and tracking modes. When no target is present or the target is beyond the range, the system switches to low-power mode, thereby adapting power consumption to actual operational needs and resolving the contradiction between detection accuracy and power consumption.
Solution Approach 2:
The system changes key operational parameters (power output, detection frequency, processing intensity) based on the presence and range of detected objects. By adjusting these parameters dynamically rather than maintaining constant high settings, the system achieves high detection accuracy when needed while minimizing power consumption during normal operation.
2Reliability
If power consumption is increased to reduce false detections, then the radar system's accuracy is improved, but operational costs and heat generation increase
Solution Approach 1:
The system employs dynamic power management where processing intensity and signal transmission power are adjusted based on operational context. During periods with detected targets within range, the system uses higher power settings to reduce false detections. During periods without targets, the system reduces power consumption while maintaining acceptable reliability through lower-intensity monitoring.
3Measurement precision
If the radar target function is continuously activated to control device operations, then operational accuracy is maintained, but power consumption increases
Solution Approach 1:
The radar target function is activated periodically based on the presence of detected objects rather than continuously. When a moving object is detected within the predetermined range, the target function is activated to control device operations. When no target is present or the target moves beyond the range, the function is deactivated, creating a periodic activation pattern that maintains accuracy when needed while reducing overall power consumption.
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
The solution minimizes power consumption while maintaining high accuracy in detecting and tracking moving objects, reducing false alarms by activating the radar target function only when a target is within a predetermined range.
Implementation Method 1
The radar sensor is configured to transmit radio frequency (RF) waves into the field of view of the radar sensor and generate the radar data based on received reflections of the transmitted RF waves
Data Source
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AI summary
Provided is an apparatus comprising processing circuitry configured to determine, based on radar data, whether a moving object is present in a field of view (FoV) of a radar sensor. The processing circuitry is further configured to determine, based on the radar data, a range of the moving object if it is determined that the moving object is present in the FoV. The processing circuitry is further configured to activate a radar target function based on the range of the moving object. The radar target function is a function configured to control an operation of a device based on the radar data.