Universal Optoelectronic Safety Device for Two-Wire and Three-Wire Systems
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Solution Overview
Problem
Existing optoelectronic safety devices require separate manufacturing and provisioning for two-wire and three-wire connection systems, leading to increased complexity and costs due to incompatibility between systems with different terminal configurations.
Innovation Solution
An optoelectronic safety device designed to operate with both two-wire and three-wire electric lines, featuring a checking device to detect the line type and automatically switch modes, allowing for unified manufacturing and reduced assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate safety devices are manufactured for two-wire and three-wire connection systems, then system compatibility is improved, but manufacturing complexity and costs increase
Solution Approach 1:
The patent implements a universal safety device that can operate with both two-wire and three-wire connection systems through a single unified design. The device incorporates adaptive circuitry that automatically detects the connection type and configures its operation accordingly, eliminating the need for separate device variants and reducing manufacturing complexity while maintaining broad system compatibility.
Solution Approach 2:
The safety device employs dynamic configuration capabilities where internal circuit elements can be electronically switched or reconfigured based on the detected connection type. This dynamic adaptability allows the same physical device to present different electrical characteristics and operational modes depending on whether it is connected via two-wire or three-wire system, resolving the contradiction between universality and manufacturing simplicity.
2Adaptability or versatility
If separate safety devices are manufactured for two-wire and three-wire connection systems, then system compatibility is improved, but provisioning costs increase
Solution Approach 1:
By designing a single universal safety device that supports both connection types, the patent eliminates the need to manufacture, stock, and distribute multiple device variants. This unified approach reduces provisioning costs while maintaining compatibility with both two-wire and three-wire machine control systems through automatic detection and adaptation mechanisms.
3Manufacturing precision
If a safety device is designed for a specific wire configuration, then manufacturing precision is improved, but adaptability to different systems deteriorates
Solution Approach 1:
The patent employs dynamically reconfigurable circuitry that allows the safety device to adapt its internal electrical characteristics based on the external connection type. This dynamic design maintains manufacturing precision for a single device variant while achieving adaptability to both two-wire and three-wire systems through electronic configuration rather than physical customization.
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 a single safety device to function with both two-pole and three-pole machine control systems, reducing manufacturing and assembly costs by eliminating the need for separate systems, and ensuring reliable motor release signal transmission.
Implementation Method 1
a light barrier with a light emitter and a light receiver forming a light signal path in the region of a moving edge of the machine element
Implementation Method 2
The light receiver sends a dynamic electric signal to the light emitter via an electric connection in response to the dynamic light signal emitted by the light emitter and received by the light receiver
Data Source
AI summary
An optoelectronic safety device for monitoring a machine movement includes an emitter/receiver device, control electronics, an electric line which includes at least two wires to transmit a supply voltage and a control signal, and a device provided so that the supply voltage and the control signal can be transmitted where the at least two wires is a two-wire electric line or, alternatively, a three-wire electric line.