Proximity Sensor Reading Control During Camera Infrared Illumination
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Solution Overview
Problem
VR devices face interference issues due to infrared light emitted by proximity sensors, leading to abnormal device states and unusability, affecting user experience and power consumption.
Innovation Solution
Implement a control method using a camera for face or eye tracking, determining the camera's state to avoid interference from an infrared lamp, and trigger sensor data reading via an interrupt signal when the camera is on, optimizing data acquisition and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the proximity sensor continuously reads data to determine wearing state, then the device can respond quickly to state changes, but the sensor may be interfered with by infrared light from the camera's infrared lamp, causing abnormal device states
Solution Approach 1:
The system checks the camera state before the proximity sensor reads data. When the camera is in the on state, the system preemptively skips the sensor reading to avoid interference from the infrared lamp, preventing abnormal device states before they occur
Solution Approach 2:
The data reading frequency of the proximity sensor is dynamically adjusted based on camera state. When the camera is off, the sensor reads data at a preset period; when the camera is on, the sensor skips reading or uses interrupt signals, making the reading frequency adaptive to avoid infrared interference
2Use of energy by moving object
If the proximity sensor reads data at a preset period when the camera is off, then power consumption is reduced, but the device may miss rapid state changes
Solution Approach 1:
The sensor reading frequency is dynamically adjusted: when the camera is off, the sensor reads at a preset period to save power; when the camera is on or during specific events, the system uses interrupt signals to trigger immediate readings, ensuring rapid response to state changes while optimizing power consumption
3Measurement precision
If the system uses interrupt signals to trigger sensor data reading when the camera is on, then interference is avoided and data accuracy is improved, but the system complexity increases
Solution Approach 1:
The camera state information is reused for dual purposes: it serves both the camera function and as a control signal for the proximity sensor. This multi-functional use of the camera state eliminates the need for separate interference detection mechanisms, reducing overall system complexity while improving data accuracy
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
Ensures reliable sensor operation by avoiding interference, improves user experience, and conserves battery energy by minimizing false wake-ups and misjudgments.
Implementation Method 1
Most Psensors emit infrared light in the form of pulses through infrared light-emitting diodes (IRLEDs), and detect infrared light reflected by an obstacle to determine whether there is an object approaching
Implementation Method 2
a camera configured to perform at least one of face tracking or eye tracking, and an infrared lamp configured to expose the camera
Data Source
AI summary
The present disclosure provides a control method and apparatus of an electronic device, a terminal, and a storage medium. The electronic device includes a sensor configured to determine whether the electronic device is in a wearing state, a camera configured to perform at least one of face tracking or eye tracking, and an infrared lamp configured to expose the camera. The control method of an electronic device includes: determining whether the camera is in an on state; based on determining that the camera is in an off state, reading data of the sensor according to a preset period to determine whether the electronic device is in the wearing state; and based on determining that the camera is in the on state, triggering generation and reading of the data of the sensor using an interrupt signal.