Automated Laser Scanner Protection Zone Testing Device

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Solution Overview

Problem

Existing methods for testing protective fields monitored by vehicle laser scanners are manual and time-consuming, requiring manual positioning of test objects at multiple test positions.

Innovation Solution

A device comprising a rotary table and a rail system that allows for automated positioning of a vehicle and a test object, enabling precise setting of test positions both inside and outside the protective field, using drive units and a computing unit for control and storage of test results.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual positioning of test objects at multiple test positions is used, then testing can be performed, but the process is time-consuming and inefficient

Engineering Contradiction:

Improvetesting efficiencyVSAvoidtesting time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent applies the dynamics principle by replacing static manual positioning with a dynamic automated positioning system. The rotary table rotates to automatically bring different test positions into the laser scanner's detection range, while the drive unit dynamically adjusts the test object's position along the rail. This dynamic automation eliminates manual intervention and significantly reduces testing time.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent replaces the manual mechanical positioning system with an automated drive system. The drive unit, controlled by a computing unit, substitutes human operators to position the test object precisely at required locations. This mechanical substitution automates the repetitive positioning task and improves testing efficiency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If multiple test positions are checked manually, then comprehensive testing is achieved, but the complexity of positioning and coordination increases

Engineering Contradiction:

Improvetesting completenessVSAvoidpositioning system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The rotary table serves multiple functions: it holds the vehicle, positions test objects at multiple test positions, and rotates to present different positions to the laser scanner. This multi-functionality reduces the need for separate positioning mechanisms for each test position, thereby managing complexity while ensuring comprehensive testing coverage.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The computing unit controls the drive unit and rotary table based on predetermined test positions, creating a feedback-controlled system. The system automatically knows when to stop at each test position and when to rotate the rotary table, ensuring comprehensive testing without requiring complex manual coordination. The automated control logic manages the complexity by centralizing the coordination function.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4405709B1Device and method for checking a protection zone monitored by a laser scanner of a vehicle

Publication Date: 2026.03.25 SEW EURODRIVE GMBH & CO KG

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AI summary

The invention relates to a device for checking a protection zone monitored by a laser scanner of a vehicle (50), comprising a rotary table (20) for receiving a vehicle (50), and comprising a test body (30), wherein the rotary table (20) is rotatable about an axis of rotation (D), and the test body (30) is movable translationally relative to the axis of rotation (D). The invention also relates to a method for checking, by means of a device according to the invention, a protection zone monitored by a laser scanner of a vehicle.