Handheld Radio Remote Control with Motion Sensor Reference Attitude
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Solution Overview
Problem
Existing radio remote controls for machines with movable components, such as cranes and hoists, lack intuitive operation capabilities, as they do not accurately record hand-held device movements in space, leading to suboptimal user control experiences.
Innovation Solution
Incorporating a feedback transmitter and receiver system with an acoustic and/or haptic display device in the hand-held device, allowing the radio remote control to detect and convert natural hand postures as reference positions, enabling precise movement detection and conversion into control commands only when the device is within a specified tolerance range, thereby enhancing intuitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hand-held device with motion sensor is used to detect natural hand postures and convert movements into control commands, then intuitive operation is improved, but device complexity increases due to the need for feedback transmitter and receiver system
Solution Approach 1:
The patent implements a feedback transmitter in the receiving device that sends feedback information to the hand-held device, and a feedback receiver that receives this information. This feedback mechanism allows the system to provide acoustic and/or haptic signals to confirm control commands, resolving the contradiction by adding complexity only where necessary to enable intuitive motion-based control while maintaining system reliability
Solution Approach 2:
The patent introduces an intermediary feedback system that mediates between the motion sensor detection and the control command execution. The feedback transmitter and receiver act as intermediaries to translate natural hand movements into meaningful control commands with confirmation, allowing intuitive operation without direct complex processing in the hand-held device
2Measurement precision
If movement detection is enabled only within a specified tolerance range of reference position, then control precision is improved, but ease of operation deteriorates due to strict positioning requirements
Solution Approach 1:
The patent establishes a reference position before movement detection begins. The system performs preliminary action by defining the tolerance range and reference frame, allowing subsequent movements to be detected with precision relative to this pre-established baseline, thus maintaining both precision and ease of operation
Solution Approach 2:
The patent dynamically adjusts the tolerance range parameter based on the reference position. By changing the parameter of acceptable deviation from the reference position, the system maintains precision for small movements while allowing greater operational freedom, resolving the contradiction between precision and ease of operation
3Reliability
If feedback information is transmitted with each control command, then reliability is improved, but energy consumption increases
Solution Approach 1:
The feedback transmitter sends feedback information periodically or at specific intervals rather than continuously. This periodic action maintains reliable communication between the receiving device and hand-held device while significantly reducing energy consumption compared to continuous feedback transmission
Solution Approach 2:
The feedback system is designed to operate autonomously, with the feedback transmitter automatically sending confirmation signals and the feedback receiver automatically processing them. This self-service mechanism ensures reliable control command transmission without requiring additional energy-intensive manual intervention or continuous monitoring
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
This configuration allows for intuitive and precise control of machines by converting natural hand movements into control commands, improving user interaction and machine control, with features like differential output and adjustable signal strength providing feedback for optimal ergonomic handling.
Implementation Method 1
at least one motion sensor, wherein the control unit is set up to convert detected movements of the hand-held device in space
Implementation Method 2
the receiving device has a feedback transmitter and is set up to activate the feedback transmitter for sending feedback information when control commands are received
Implementation Method 3
a feedback receiver that is controlled by the control unit has an acoustic and/or haptic display device, by means of which operating function information of the radio remote control can be displayed
Data Source
AI summary
The present invention relates to a radio remote control system of a machine that comprises at least one machine drive for a moveable machine part, which machine drive can be controlled by the radio remote control system, comprising a hand-held unit (10) comprising a control unit, a transmitter and at least one motion sensor, wherein the control unit is configured to communicate control commands issued by a user to a transmitter, and to cause the transmitter to transmit the control commands to the machine, in particular to an associated receiver, and wherein movements of the hand-held unit (10) in space about at least one tilt axis or pitch axis (KA, DA) can be detected by the motion sensor in such a way that in a motion control mode, the detected movements can be converted by the control unit into control commands, which can be communicated to the machine, wherein the motion control mode can be activated by a user input at the hand-held unit (10). It is proposed according to the invention that the control unit is also configured such that on activating the motion control mode, the current attitude (I) of the hand-held unit (10) in space is detected as the current reference attitude (I), so that movements relative to this current reference attitude (I) can be detected by the motion sensor, and can be communicated by the control unit as control commands to the machine. The invention also relates to an operating method for a radio remote control system according to the invention.