Textile Machine Service Unit Camera Positioning
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Solution Overview
Problem
Existing textile machine systems face challenges in accurately and reliably controlling service units across multiple work stations due to the complexity and cost of sensor systems, with prior methods being inaccurate and requiring additional positioning devices.
Innovation Solution
Implementing a camera system that generates images of service unit and work station components to determine their positions and states, allowing for control and operation without the need for extensive sensor networks, using simple webcams and image processing methods integrated into the control unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are used to detect states and positions of work stations and service units, then measurement precision and reliability are improved, but device complexity and costs increase due to the large number of work stations
Solution Approach 1:
The camera system serves multiple functions: it detects the position of the service unit, identifies work station numbers, monitors the states of work stations, and provides visual documentation. This single multi-functional device replaces what would otherwise require multiple specialized sensors, thereby reducing device complexity while maintaining measurement precision
Solution Approach 2:
Instead of using physical sensors at each work station to detect states and positions, the invention uses optical copying through camera images. The camera captures visual information that is then processed to extract position and state data, replacing physical sensor networks with an optical information copying system
2Reliability
If infrared interfaces are installed at every work station for communication and positioning, then communication reliability is improved, but device complexity and costs increase
Solution Approach 1:
The invention extracts the communication function from the work stations themselves and consolidates it into the moving service unit. Instead of each work station having its own infrared interface, the camera-equipped service unit captures visual information containing work station identifiers and communicates with the central control, removing the need for distributed communication infrastructure
Solution Approach 2:
The camera system acts as an intermediary between the work stations and the central control. Rather than direct communication between control units and work stations, the camera captures and transmits information about work station states and positions, serving as a mobile mediation layer that simplifies the overall communication architecture
3Measurement precision
If positioning coils with small distances are used for precise service unit positioning, then positioning precision is improved, but the risk of collisions increases and accuracy demands are higher
Solution Approach 1:
The invention replaces the mechanical/electromagnetic positioning coil system with an optical positioning system using a camera. The camera captures images of work station identifiers and uses image processing to determine position, substituting a mechanical sensing approach with an optical one that allows for larger safety margins and reduced collision risk
Solution Approach 2:
Instead of using physical proximity sensing through positioning coils, the system uses optical copying of visual identifiers. The camera captures images of work station numbers or markers from a distance, processes them to determine position, and controls the service unit accordingly, eliminating the need for close-proximity electromagnetic coupling
Data Source
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AI summary
The invention relates to a textile machine (1) having a plurality of work stations (2) and at least one service unit (16) that can be moved along the work stations (2) for operating and/or maintaining the individual work stations (2), wherein the at least one service unit (16) comprises at least one camera (50), and wherein the camera (50) is designed to produce images that include components of the service unit (16) and/or the work stations (2) and to transmit them to a control unit (17, 6, 10) of the textile machine (1) for detecting and evaluating the components and/or the current absolute or relative positions thereof, said control unit using the information obtained for controlling the service unit (16) and/or the work station (2) requiring operation and/or control. The invention further relates to a method for operating a textile machine (1) of said kind.