Method of controlling a suction device
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Solution Overview
Problem
Existing suction device control methods are limited in providing an auto-start function for various machine tools, particularly hand-held tools, regardless of their power supply type, such as battery-operated or pneumatically operated tools, as they rely on a specific power source connection.
Innovation Solution
A method that records vibration data from a suction hose using a sensor module, evaluates this data against comparison data, and controls the electric motor based on the comparison result, allowing the suction device to autonomously start or stop, regardless of the machine tool's power supply, ensuring compatibility with diverse energy sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the suction device uses a mains socket connection for auto-start function, then the auto-start capability is achieved, but the compatibility with battery-operated and pneumatically operated machine tools is lost
Solution Approach 1:
The patent replaces the electrical/mains-based auto-start detection system with a vibration-based detection system. Instead of relying on electrical connections or power supply types, the suction device uses vibration sensors to detect the operational state of any machine tool through mechanical vibrations transmitted through the suction hose, enabling universal compatibility across different power supply types.
Solution Approach 2:
The patent introduces vibration signals as an intermediary medium for detecting machine tool operation. The vibration sensor acts as an intermediary that translates mechanical vibrations from any machine tool into control signals for the suction device, bypassing the need for direct electrical connection or power supply integration.
2Ease of operation
If the suction device monitors vibration data to detect machine tool operation, then universal auto-start functionality is achieved, but the device complexity increases due to additional sensors and control logic
Solution Approach 1:
The suction device performs self-diagnosis and self-starting by automatically detecting machine tool operation through vibration signals. The control unit autonomously processes vibration data, compares it with reference values, and triggers the suction function without requiring user intervention or complex external control systems.
Solution Approach 2:
The patent monitors changes in vibration parameters (amplitude, frequency, pattern) to detect the operational state of the machine tool. By tracking parameter changes in the vibration signal rather than using complex absolute measurements, the system achieves reliable detection with simpler sensor and control requirements.
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 universal auto-start functionality for suction devices with both mains-connected and battery-operated hand-held machine tools, enhancing user convenience and compatibility across different manufacturers and energy supply types.
Implementation Method 1
a sensor module (70) arranged on the suction hose (36) for detecting vibration data (110), in particular for detecting vibrations of a machine tool (100), in particular of a hand-held power tool
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method (200) for controlling a suction device (10), wherein the suction device (10) comprises at least one electric motor (80) at least for generating a suction function, comprising at least the following method steps - detecting vibration data (120) on a suction hose (36) of the suction device (10), - evaluating the vibration data (120) by comparing it with comparison data and generating a comparison result, - controlling the electric motor (80) in accordance with the comparison result.