Data Acquisition System with Input Device Memory for Wireless Data Loss

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current data acquisition systems in facilities face challenges with data loss due to communication abnormalities between input devices and recorders, particularly with the introduction of wireless communication, which increases the likelihood of simultaneous data loss across multiplexed recorders, and require costly duplication of recorders for data integrity, increasing system costs and maintenance burdens.

Innovation Solution

A data acquisition system that includes an input device capable of storing measurement data and sequence information, a data collector that generates time information and data loss information, and a data combiner that collates data from both the input device and recorder to supplement lost data, eliminating the need for duplicate recorders and reducing system costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless communication is used between input device and recorder, then communication flexibility is improved, but data loss probability increases

Engineering Contradiction:

Improvecommunication flexibilityVSAvoiddata loss probability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The input device stores measurement data and sequence information in its internal memory before transmission to the recorder. This preliminary storage ensures that even if wireless communication fails and causes data loss, the input device retains the measurement data and can later transmit it or provide it through alternative means, thus mitigating the reliability issue while maintaining communication flexibility.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If duplicate recorders are used to ensure data integrity, then data reliability is improved, but system cost increases

Engineering Contradiction:

Improvedata integrityVSAvoidsystem cost

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of duplicating the expensive recorder device, the patent creates a logical copy of the data by having the input device store measurement data and sequence information locally. This data copying approach allows the system to maintain data integrity without requiring duplicate hardware recorders, thereby reducing system cost while preserving reliability.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The input device performs self-storage of measurement data and sequence information in its own internal memory, eliminating the need for the recorder to duplicate data. This self-service capability at the input device level reduces the system's hardware requirements and cost while ensuring data integrity through the input device's own data retention function.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If input device stores measurement data, then data retrieval capability is improved, but device complexity increases

Engineering Contradiction:

Improvedata retrieval capabilityVSAvoidinput device complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The input device creates a local copy of measurement data and sequence information in its internal memory. This copying function is relatively simple and does not require complex real-time clock or data management systems, as it merely stores data in memory without needing sophisticated time management or processing capabilities, thus improving data retrieval capability with minimal added complexity.

Inventive Principle:

Principle #26Copying

4Loss of information

If recorder manages time and stores data, then data organization is improved, but loss of data during recorder failure occurs

Engineering Contradiction:

Improvedata organizationVSAvoiddata loss during recorder failure

Core Design Contradiction:

Loss of informationVSReliability

Solution Approach 1:

The input device acts as an intermediary that stores measurement data and sequence information locally before transmitting to the recorder. This intermediary storage at the input device level ensures that even if the recorder fails and cannot manage or store data, the measurement data is preserved at the input device and can be recovered, thus preventing data loss while maintaining data organization through the recorder's time management function when operational.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11513769B2Data acquisition system, input device, data acquisition apparatus, and data combining apparatus

Publication Date: 2022.11.29 YOKOGAWA ELECTRIC CORP

AI summary

A data acquisition system according to an embodiment includes an input device, a data acquisition apparatus, and a data combining apparatus. The input device includes a data measurer configured to acquire measurement data by performing measurement, generate sequence information representing a sequence of the acquired measurement data, and transmit the measurement data and the sequence information to the data acquisition apparatus. The data acquisition apparatus includes a data collector configured to, when receiving the measurement data and the sequence information, generate time information, and when failing to receive the measurement data and the sequence information, generate data loss information. The data combining apparatus includes a data combiner configured to acquire data from the input device and the data acquisition apparatus, collate the sequence information therein, and replace the data loss information with the measurement data in the data obtained from the input device, thereby generating combined data.