What This Category of Data Looks Like
This category of data originates from daily documents of manufacturing enterprise equipment departments, workshop maintenance teams, and public utility departments. Documents include equipment ledgers, inspection sheets, maintenance plans, work orders, fault analysis reports, spare parts lists, and special equipment inspection records. Data sources cover EAM/CMMS systems, device sensor data, operator inspection records, maintenance history, spare parts inventory, and statutory inspection information. Update frequencies include shift-based, daily, weekly, monthly cycles, and immediate updates when faults occur. Most documents combine structured tables and plain text, with fields such as equipment number, inspection parameters, spare part model, and inspection validity period. Units include millimeters, hours, counts, and similar measurement units.
Constraints for Document Parsing and Chunking
Equipment-related documents contain large volumes of structured tables and parameter fields with units. Parsing processes must retain table structures to prevent content misalignment. Multi-source data has significant differences in update frequencies. Chunking must match document update rhythms to avoid mixing cross-cycle data. Special equipment inspection records have fixed format requirements. Chunking must ensure complete retention of inspection item paragraphs. Maintenance work orders are linked to equipment numbers and fault descriptions. Chunking must avoid splitting key associated fields. Large equipment ledgers may include multi-page historical data. Chunking must balance content integrity and retrieval efficiency.
Configuration Settings
The following configurations are based on FastGPT v4.17.0.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Equipment documents mostly consist of structured tables and parameter text. This range can retain complete paragraphs of a single inspection sheet or work order |
chunkSplitter | Separate by tables and line breaks | Equipment documents contain a large number of parameter tables with units. Separating by tables avoids misalignment of table content |
customPdfParse | Enabled | Adapts to complex-format PDF documents such as equipment ledgers and inspection records, retaining original typesetting |
PARSE_FILE_TIMEOUT_SECONDS | 300–600 seconds | Large equipment ledger PDFs contain multi-page historical records, requiring sufficient time to complete parsing |
UPLOAD_FILE_MAX_SIZE | 100 MB | A single equipment spare parts list or inspection record may contain multi-page historical data, requiring support for large file uploads |
chunkSettingMode | Manual configuration | Flexible adjustment of chunking parameters for different types of equipment documents (such as inspection sheets and work orders) to meet scenario requirements |
Three Common Misconfigurations
- Table content is misaligned after uploading a PDF, with chaotic column widths in the parsing result. The cause is that
chunkSplitteris not configured to separate by tables, and the default chunking truncates by characters, destroying the table structure. - File upload parsing fails and returns a timeout error during chat interactions. The cause is that the
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted, and the parsing time of large equipment ledger PDFs exceeds the default threshold. - The custom PDF parsing service does not take effect, and uploaded files still use the default parsing logic. The cause is that the
customPdfParseconfiguration is not enabled, or the custom service interface address is not correctly connected.
How to Verify Successful Configuration
- Upload a PDF of an equipment inspection sheet containing structured tables, and verify that the parsing result retains complete row and column structures of the table without content misalignment.
- Upload a PDF of equipment maintenance history with more than 10 pages, and verify that the parsing task duration matches the threshold set by
PARSE_FILE_TIMEOUT_SECONDSwithout timeout errors. - After enabling
customPdfParse, upload a PDF of special equipment inspection records, and confirm that the parsing result retains the original inspection item numbers and parameter typesetting. - Verify the system upload file limit, confirm that
UPLOAD_FILE_MAX_SIZEis larger than the typical single-file size of equipment documents, with no upload failure prompts.
The values provided are common starting points and should be evaluated against the reader's own samples.