Blower with Motion Sensor for Angle-Based Motor Control
Find Innovative SolutionsGenerate Solutions
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 non-working positions.
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 during transportation and adjustments, causing inconvenience and unnecessary energy consumption
Solution Approach 1:
The motion sensor enables the blower to automatically detect its own state (transportation vs. working position) and control its own operation without requiring continuous user input. The sensor monitors the blowpipe angle and autonomously activates or deactivates the motor based on predefined thresholds, allowing the device to serve itself in determining when operation is needed.
Solution Approach 2:
The manual mechanical trigger switch operation is replaced by an electronic motion sensing system. The motion sensor uses electronic detection of the blowpipe angle relative to the horizontal plane to control the motor, substituting the mechanical switching action with an electronic sensing and control system that automatically determines when the blower should operate.
2Reliability
If the blower operates continuously during transportation, then the motor remains ready for immediate use, but unnecessary wind is generated causing environmental impact and energy waste
Solution Approach 1:
The motion sensor provides continuous feedback about the blower's orientation angle to the control system. Based on this feedback, the system automatically adjusts the motor operation state. When the blowpipe angle indicates transportation position (below first threshold), the motor is deactivated. When the angle indicates working position (above second threshold), the motor is activated, creating a closed-loop feedback control system.
Solution Approach 2:
The system uses changes in the physical parameter of blowpipe angle to control operational parameters. By monitoring the angle parameter and comparing it against predefined thresholds, the system transitions the motor between on and off states, using parameter change detection to determine appropriate operational mode.
3Extent of automation
If a motion sensor with angle detection is added to the blower, then automatic control based on position is achieved, but the device complexity increases
Solution Approach 1:
The motion sensor serves multiple functions: it detects the blowpipe angle, determines whether the blower is in transportation or working position, controls motor activation, and provides feedback for automatic operation. This multi-functionality reduces the need for separate sensors and control mechanisms, thereby limiting the increase in overall device complexity despite adding automation capabilities.
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 prevents unnecessary wind generation, enhancing usability and extending the blower's service life by automatically controlling the blower's operation based on its orientation.
Implementation Method 1
the motion sensor is adapted to detect the angle formed by the blowpipe and the horizontal plane
Data Source
AI summary
A power tool is provided, which comprises a housing, a motor located within the housing, and 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 power tool. The motion sensor can determine the angle between the power tool and the horizontal plane, and operation of the motor is controlled accordingly.