Powerline Sensor Control for Safety-Critical Production

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Solution Overview

Problem

Current production processes in safety-critical environments face challenges with high installation and maintenance costs due to extensive cabling, limited flexibility and redundancy, data processing delays, and inadequate security against unauthorized access and manipulation.

Innovation Solution

A dual communication infrastructure is implemented, utilizing high-frequency signals over low-voltage power lines, with selective sensor reading and cascaded control units, encryption, and non-overwritable identifiers to ensure reliability, security, and adaptability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dedicated communication lines are used for data transmission, then data transmission reliability is improved, but installation and maintenance costs increase significantly

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoidinstallation and maintenance costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines power transmission and data communication functions into a single infrastructure by using power lines for both purposes. Powerline communication technology enables data transmission over existing electrical power distribution networks, eliminating the need for separate dedicated communication cables. This merging reduces installation complexity and maintenance costs while maintaining reliable data transmission for safety-critical monitoring.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The power line infrastructure is made multi-functional by enabling it to simultaneously perform both power delivery and data communication tasks. This universal use of existing power distribution networks allows the system to leverage already-installed infrastructure, avoiding the need for additional specialized communication lines while ensuring reliable data transmission for process monitoring.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If centralized data processing is implemented, then system control is simplified, but data processing delays increase

Engineering Contradiction:

Improvesystem control complexityVSAvoiddata processing delays

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent segments the centralized control architecture into distributed edge computing nodes deployed at various points within the safety-critical system. These edge devices perform local data processing and preliminary analysis, reducing the volume of data that must be transmitted to central systems and enabling faster local responses. This segmentation maintains simplified overall system control while eliminating processing bottlenecks.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Edge computing devices perform preliminary data processing, filtering, and analysis before data reaches central control systems. This preliminary action at the edge reduces transmission data volumes and enables immediate local responses to critical events, minimizing overall data processing delays while maintaining centralized coordination.

Inventive Principle:

Principle #10Preliminary action

3Area of stationary object

If extensive cabling infrastructure is deployed, then communication coverage is improved, but system flexibility and adaptability decrease

Engineering Contradiction:

Improvecommunication coverageVSAvoidsystem flexibility

Core Design Contradiction:

Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical cabling infrastructure with wireless communication technologies for data transmission. Wireless sensors and communication devices enable comprehensive coverage without physical cable installations, allowing rapid system reconfiguration, easy sensor relocation, and enhanced adaptability to changing process requirements while maintaining full communication coverage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Stability of the object's composition

If traditional communication infrastructure is used, then system stability is maintained, but security against unauthorized access is insufficient

Engineering Contradiction:

Improvesystem stabilityVSAvoidsecurity against unauthorized access

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent implements preliminary security measures including encryption, authentication protocols, and intrusion detection systems within the communication infrastructure. These preventive security mechanisms are built into the system architecture from the outset, protecting against unauthorized access and cyber threats before they can compromise system stability, while maintaining reliable and secure data transmission.

Inventive Principle:

Principle #9Preliminary anti-action

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 approach reduces costs, simplifies installation, enhances flexibility and redundancy, ensures secure data transmission, and improves process efficiency and reliability by enabling real-time adjustments and proactive monitoring.

Implementation Method 1

the second communication infrastructure operates at least one communication path by modulating high-frequency signals over a low-voltage power line

Methodology Applied

Scientific EffectSignal modulation: Phase Modulation

Data Source

PatentEP4685592A1Efficient control of terminal devices within a safety-critical production process

Publication Date: 2026.01.28 VOGT ANDREAS

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AI summary

The present invention describes a method and a system arrangement for the efficient control and monitoring of end devices within safety-critical production processes. The aim of this innovation is to significantly improve the efficiency, safety, and reliability of these processes. A communication infrastructure used is characterized by its ability to modulate high-frequency signals over low-voltage power lines. This method enables the cost-effective and simple use of existing power lines for data transmission. Within the production process, sensors are selected based on a predefined production scheme, and only the relevant sensors are read. These sensors monitor various parameters of the production equipment. The data from the selected sensors are acquired and processed by at least one control unit, which is also located within the second communication infrastructure.Another aspect of the invention is that the control units are equipped with non-overwritable identifiers. This measure ensures the authenticity and integrity of the control units and protects against unauthorized access and manipulation. The integration of encryption mechanisms into the signal modulation further enhances the security of data transmission. The described system arrangement creates a flexible and adaptable infrastructure that offers high reliability and efficiency. Direct and continuous monitoring of production parameters enables an immediate response to changes and potential problems, thereby increasing process reliability and product quality. Overall, the invention provides a robust, secure, and cost-effective solution for controlling and monitoring safety-critical production processes, thus meeting the complex requirements of modern production environments.Furthermore, a computer program product with control commands is proposed that implements the proposed method or operates the proposed device and arrangement.