What data for this category looks like
Core data for spraying and coating scenarios comes from coating supplier TDS/SDS documents, spray booth and oven operating data, colorimeters, film thickness gauges, environmental monitoring equipment, and MES systems. Daily documents include coating process cards, coating batch sheets, paint mixing records, film thickness and color difference reports, oven curves, defect repair orders, and VOCs ledgers.
Data update frequency varies based on each coating batch, each shift production cycle, and continuous device collection rates. Fields include coating viscosity, film thickness values, oven temperature ranges, and VOCs concentrations. Common units are Pa·s, μm, ℃, and mg/m³.
What constraints these characteristics impose on HTTP interfaces and external systems
The multi-source heterogeneous data structure and high-frequency update properties of coating scenarios impose specific requirements on HTTP interfaces. Interfaces must support data transfer in multiple formats, including structured coating batch sheets and unstructured oven curve files. Continuously collected real-time device data requires interfaces to deliver low-latency responses, to avoid blocking production workflows. Multi-batch concurrent paint mixing and repair data requires interfaces to support request authentication and batch processing. Interfaces must also adapt to transmission requirements for compliance data such as VOCs ledgers, to ensure traceability of all data transfers. Variations in fields across different business documents require interface parameters to support flexible configuration, to accommodate field mapping needs for distinct business scenarios.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
Authorization | Bearer {global authentication token} | Adapts to the authentication needs of multi-system integration in coating scenarios, prevents unauthorized access to device operating data and process documents |
variables | {"batch_no": "coating batch number", "film_thickness": "μm"} | Matches core business fields in coating scenarios, enables automatic mapping between interface parameters and business data |
responseData | Return parsed coating defect analysis results in txt format | Adapts to the text-based output requirements of maintenance Q&A, meets user needs for txt file returns |
| Request timeout | 600 seconds | Adapts to the transmission and processing duration of large-volume data such as oven curves and VOCs ledgers |
| Maximum data per request | Top 20 production records | Balances the production data update frequency in coating scenarios and interface load, avoids overload from single requests |
Three common configuration mistakes
- Symptom: The interface returns a
401 Unauthorizedstatus code, and coating process card data cannot be retrieved. Cause: TheAuthorizationparameter is not configured correctly, and a valid global authentication token is not included in requests. - Symptom: The returned txt file is empty after calling the interface, and coating defect analysis results cannot be viewed. Cause: Correct coating batch number or film thickness value is not passed via the
variablesparameter, so the backend cannot match the corresponding business data. - Symptom: The curl request returns a "connection timed out" error, but local testing succeeds. Cause: The interface timeout configuration does not accommodate large-volume data transfers in coating scenarios. The default timeout duration is not long enough to complete oven curve parsing and return.
How to confirm the configuration is correct
This document was written for FastGPT v4.17.0.
- Call the interface with a known coating batch number, and verify that the returned
responseDataincludes coating defect analysis content for that batch. - Review interface logs to confirm that the
Authorizationparameter is correctly included and passes authentication checks. - Upload a simulated oven curve txt file, and confirm that the interface correctly parses the file and returns a properly formatted result.
- Simulate multi-batch concurrent requests, and confirm that the interface can stably handle high-frequency data requests for coating scenarios.
The values provided are common starting points and should be evaluated against the reader's own samples.