What the Data for This Category Looks Like
Inspection and process record data for photovoltaic module packaging comes from battery sheet grading systems, glass adhesive film and backsheet batch ledgers, factory MES systems, string welding and lamination equipment, EL defect detectors, and IV power testers. Data updates in real time per individual module and per material batch. Daily documents include layout diagrams, material batch records, lamination process records, EL defect images, IV test reports, insulation voltage withstand records, and packing lists. Data fields include component unique IDs, battery sheet current grades, lamination temperature and duration, EL crack location coordinates, IV test power values, insulation voltage withstand values, and some fields are linked to binary-format image and test report files.
Constraints Imposed on HTTP Interfaces and External Systems
High-frequency real-time business data requires interfaces to support high-concurrency calls. This prevents inspection process blockage caused by data delays. Multiple heterogeneous data sources require integration with multiple external systems. Interfaces must support dynamic switching of request addresses and authentication parameters. Large-volume image and test report data increases request body transmission load. Request size limits must be configured appropriately. Fixed parameters cannot adapt to personalized data for each module. Global variables must be used to pass dynamic business identifiers, ensuring accurate interface calls. Severe error consequences require interfaces to include failure retry and status code verification mechanisms. This prevents erroneous data from entering subsequent audit links.
Configuration Settings
The following configurations are based on FastGPT v4.17.0, and are adapted for the inspection and process record audit scenario of photovoltaic module packaging:
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
Authorization | Bearer {global authentication token} | Legitimate authentication credentials must be carried when integrating with external MES and tester systems to avoid unauthorized access |
variables | Bind global variables such as component ID and material batch number | Each module corresponds to a unique business identifier. Dynamic parameters must be passed via global variables to adapt to high-frequency updated business data |
| Request timeout | 300–600 seconds | Requests require waiting for EL image parsing and IV test result returns. Single requests take a long time. Adjust settings based on actual measurement calibration |
responseData | Extract core business fields such as power value and crack determination result | Only retain data required for inspection and audit. This reduces interface transmission load and improves processing efficiency |
| Retry attempts | 2–3 times | Device interfaces may experience temporary fluctuations. Retries reduce temporary failure rates and avoid data abnormalities caused by repeated submissions |
Three Common Configuration Errors
- An HTTP module calls an interface and returns 401 or a connection failure, but the call works in Postman. The cause is incorrect configuration of the
Authorizationparameter, or failure to correctly pass the authentication token via global variables. This causes the request to fail external system verification. - An interface call returns a parameter error, prompting that a required field is missing. The cause is failure to bind dynamic business parameters via
variables. Fixed values are used to pass component IDs and material batch numbers, resulting in a mismatch with actual business data. - Execution exceptions occur after adding an HTTP request to a loop nest. The cause is failure to adjust the request timeout, where the single request duration exceeds the default limit. Or,
variablesare not correctly set to pass batch parameters in the loop, resulting in duplicate or missing parameters.
How to Verify Successful Configuration
- Call the test interface and check if the returned
responseDatafields include expected core business data such as power value and crack determination result. - Simulate changes to component IDs and material batch numbers. Check if the global parameters bound via
variablesupdate automatically, to ensure correct dynamic parameter passing. - Simulate an interface timeout scenario. Confirm that the request triggers a retry or returns a clear timeout error after the set timeout period.
- Check the request log to confirm that the
Authorizationparameter is correctly included in the request header, with no omissions or format errors.
All configuration values provided here are common starting points. They should be validated against the reader's own operational samples and adjusted as needed.