Blower with motion detector
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Solution Overview
Problem
Existing hand-held blowers require constant manual triggering, leading to inconvenience and unnecessary energy consumption when not in use, such as during transportation or adjustments in direction.
Innovation Solution
Incorporation of a motion sensor that controls the blower's operation based on the angle of the blowpipe relative to the horizontal plane, allowing intelligent activation only when the user intends to use the blower, with adjustable thresholds to prevent activation during transportation or extreme tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual trigger switch is used to control the blower, then the user has direct control over operation, but the user must repeatedly operate the switch causing inconvenience and labor
Solution Approach 1:
The blower system performs self-control through the motion sensor that automatically detects the user's carrying motion and activates the motor without requiring manual trigger operation. The system serves itself by monitoring its own operational state through motion detection and autonomously starting/stopping the motor based on detected motion patterns.
Solution Approach 2:
The mechanical trigger switch operation is replaced by an electronic motion sensing system. The motion sensor detects physical motion and converts it into electronic signals that automatically control the motor, substituting the manual mechanical switching mechanism with an automated sensing and control system.
2Reliability
If the blower operates continuously when carried, then the blower is always ready to use, but energy is wasted during transportation and non-working periods
Solution Approach 1:
The blower's operational state dynamically changes based on real-time motion detection. The system transitions between ON and OFF states according to the detected motion characteristics, allowing the blower to be ready when needed (when motion is detected) while conserving energy during static periods (transportation or storage).
Solution Approach 2:
The motion sensor provides continuous feedback about the blower's motion state to the control system. This feedback loop enables the system to automatically adjust its operational state based on whether the blower is being actively used or merely transported, optimizing the balance between readiness and energy consumption.
3Ease of operation
If the blower starts automatically during carrying, then convenience is improved, but unwanted wind is generated during transportation
Solution Approach 1:
The motion sensor is positioned to detect motion at a specific location and orientation, allowing the system to distinguish between carrying motions that indicate intended use versus motions that indicate transportation. The sensor's specific placement and detection angle create a localized detection zone that helps differentiate between useful and useless motion patterns.
4Ease of manufacture
If the blower structure is kept simple, then manufacturing is easier and cost is lower, but the blower lacks intelligent control functionality
Solution Approach 1:
The motion sensor serves multiple functions: it detects carrying motion to activate the blower, distinguishes between useful and useless motion to prevent unwanted operation, and provides feedback for energy-saving control. This single component performs multiple intelligent control tasks that would otherwise require a complex system of sensors and controls.
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
Reduces user labor, saves energy, and minimizes unwanted wind, extending the blower's service life and reducing environmental impact.
Implementation Method 1
a motion sensor. The motion sensor is adapted to control the operation of the motor in response to changes in position or angle of the blower
Implementation Method 2
the motion sensor is adapted to detect the angle formed by the blowpipe and the horizontal plane
Data Source
AI summary
A blower is provided, which comprises a housing, a blowpipe coupled to the housing, a motor located within the housing, and blades driven by the motor to generate air flow. The blower also comprises a motion sensor. The motion sensor is adapted to control the operation of the motor in response to changes in position or angle of the blower. The motion sensor can determine the angle between the blower and the horizontal plane, thereby intelligently determining whether the user wants to carry the blower by hand and wants to perform air blowing, and controls the operation of the motor accordingly.