Conveyor Safety Control Module Self-Calibration

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conveyor systems face issues with speed inconsistencies and mechanical failures, such as misaligned or missing steps, which can lead to safety hazards and require costly, time-consuming maintenance and replacement of safety monitoring devices to comply with changing regulations.

Innovation Solution

A safety control system with sensors and a safety control module that automatically adjusts and calibrates safety parameters, including step speed and presence detection, to ensure compliance with safety codes and regulations, adaptable to various conveyor types and capable of self-calibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If safety monitoring devices are manually configured and preprogrammed for each specific conveyor type and location, then safety compliance is achieved, but device complexity and time consumption increase significantly

Engineering Contradiction:
Improvesafety complianceVSAvoidconfiguration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The safety monitoring device automatically determines operational and mechanical characteristics of the conveyor through self-calibration routines, eliminating the need for manual configuration. The device performs self-testing and self-adjustment to comply with safety codes without requiring service technician intervention for each specific conveyor type.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system automatically adjusts safety control parameters based on detected conveyor characteristics. By dynamically changing parameters such as speed thresholds, stop distances, and monitoring frequencies according to the specific conveyor's operational profile, the device achieves compliance without manual pre-programming for each conveyor type.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If safety monitoring devices are manually configured for each specific conveyor application, then safety compliance is achieved, but time consumption and cost increase

Engineering Contradiction:
Improvesafety complianceVSAvoidconfiguration time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The device performs automatic self-calibration and determination of conveyor characteristics during installation and operation, eliminating the time-consuming manual configuration process. Service technicians no longer need to spend hours pre-programming each device for specific conveyor types and locations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary automatic calibration and characterization routines during initial startup to establish safety parameters before normal operation begins. This preliminary self-configuration eliminates the need for time-consuming manual setup while ensuring safety compliance from the start.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If existing safety devices are replaced to comply with changing safety codes, then safety compliance is maintained, but productivity and cost are negatively impacted

Engineering Contradiction:
Improvesafety complianceVSAvoidconveyor downtime
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The safety monitoring device dynamically adapts to changing safety codes and regulations through automatic parameter adjustment and self-updating capabilities. Instead of requiring physical replacement when codes change, the device can modify its operational parameters and compliance criteria software-based, minimizing downtime and maintaining productivity.

Inventive Principle:
Principle #15Dynamics

4Reliability

If safety monitoring devices are customized for each conveyor type, location, and application, then safety compliance is achieved, but adaptability and upgradeability are reduced

Engineering Contradiction:
Improvesafety complianceVSAvoidadaptability to changes
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The safety monitoring device is designed as a universal platform that can adapt to various conveyor types, locations, and applications through automatic self-characterization. The device performs preliminary routines to determine the specific conveyor's operational and mechanical characteristics, then configures itself accordingly, eliminating the need for custom hardware designs for each application while maintaining full adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP2421786B1Automatic adjustment of parameters for safety device
Publication Date: 2018.12.26 OTIS ELEVATOR CO
  • EP2421786B1 patent drawingFigure 1
  • EP2421786B1 patent drawingFigure 2
  • EP2421786B1 patent drawingFigure 3

AI summary

A device (100) and method (300) for automatically adjusting safety control parameters of a conveyor (10, 10a) are disclosed. The safety device (100) may include various sensors (102, 102a, 104, 104a, 106, 106a, 108, 108a) and a safety control module (200, 200a). The safety control module (200, 200a) may be preprogrammed with a learn- run method (300) configured to learn operational and mechanical characteristics of a conveyor (10, 10a), validate the operational characteristics of the conveyor (10, 10a) based on predefined nominal specifications, and determine a safety function with calibrated safety control parameters by which to monitor conveyor operation.