Decode BLF communication with DBC context
Parse BLF recordings and apply the supplied DBC definitions to produce decoded CAN frames, signals, scaling, and interpretation notes where the recording and database support them.
Vehicle Data & Measurement
BLF decoding for practical vehicle data analysis
Turn BLF recordings into decoded CAN frames, signals, and engineering findings. The service supports focused investigation, repeatable processing, and clear interpretation of recorded vehicle communication.
Discuss a BLF ProjectProblems I can investigate
Find the behavior behind the symptom
- 01
Large measurement files
Large BLF recordings can make interactive inspection and repeated processing impractical. The work can be structured around targeted extraction, batch processing, and evidence relevant to the engineering question.
- 02
Intermittent vehicle behavior
Irregular symptoms often require comparison across recordings and correlation of decoded signals with the supplied problem description. Analysis focuses on observable evidence rather than assumptions about the cause.
- 03
Repetitive manual analysis
Repeated preparation and interpretation steps can consume engineering time and produce inconsistent results. A repeatable decoding or conversion workflow can make the same analysis easier to run again.
What I can help with
Focused engineering work in Vehicle Data & Measurement
Investigate signals across recordings
Examine timestamped CAN data for signal correlation, recurring patterns, and evidence relevant to intermittent vehicle behavior or an identified anomaly investigation.
Build repeatable data processing
Create a focused utility for parsing, converting, or batch processing recorded data so recurring analysis steps can be executed consistently.
Compare recorded and exported data
Convert or prepare results for practical review using supported vehicle-data formats such as ASC or CSV, while keeping the relationship to the source BLF recording clear.
What to send
Start with the evidence you already have
BLF recording
The Vector binary log containing the timestamped bus communication to decode or investigate.
DBC
The CAN database defining the messages and signals required for decoding.
Problem description
Observed symptoms, context, reproduction steps, and expected behavior to focus the analysis.
How the analysis works
From recorded data to engineering findings
- 01
Scope the engineering question
Review the problem description and identify the recordings, signals, time ranges, and comparison points relevant to the requested work.
- 02
Inspect the supplied data
Parse the BLF recording and assess the available CAN communication alongside the supplied DBC definitions.
- 03
Decode and analyze
Translate supported frames into engineering values, examine signal correlation, and investigate patterns associated with the reported behavior.
- 04
Make the process repeatable
Where useful, organize the processing as a repeatable converter or batch workflow for additional recordings and consistent review.
- 05
Document evidence and findings
Summarize the decoded data, analysis boundaries, relevant observations, and findings without overstating what the recording can establish.
What you receive
Deliverables matched to the investigation
Engineering analysis
A documented technical analysis with evidence, findings, relevant observations, and stated limitations.
CAN decoding results
Decoded CAN frames, signals, and interpretation notes derived from the supplied BLF recording and DBC.
Data converter
A repeatable utility that transforms the relevant automotive data formats for the agreed analysis workflow.
Technologies & formats
Automotive data and analysis environments
- BLF
Binary Logging Format
A Vector binary container for timestamped bus communication.
- CAN
Controller Area Network
A priority-based broadcast bus used for in-vehicle control communication.
- CANalyzer
Vector CANalyzer
A Vector environment for recording and analyzing vehicle-network communication.
- CANoe
Vector CANoe
A development, simulation, test, and analysis environment for vehicle networks.
- CAN-FD
CAN Flexible Data-rate
An extension of CAN with larger payloads and a faster data phase.
- DBC
CAN Database
A text format describing CAN messages, signals, nodes, scaling, and metadata.
- J1939
SAE J1939
A higher-layer vehicle network protocol suite using CAN, common in heavy vehicles.
- ISO-TP
ISO 15765-2 Transport Protocol
A segmented transport protocol for messages carried over CAN.
- python-can
python-can
A Python library providing a common API for CAN interfaces and messages.
- ASC
ASCII Log Format
A human-readable Vector format for timestamped bus events.
- UDS
Unified Diagnostic Services
ISO 14229 diagnostic services for communicating with vehicle ECUs.
- CAPL
Communication Access Programming Language
Vector event-driven language for network simulation, testing, and automation.
FAQ
Practical questions before an investigation
- What is needed to start a BLF decoding task?
- Provide the BLF recording, the applicable DBC, and a problem description covering the observed symptom, context, reproduction steps, and expected behavior.
- Can intermittent vehicle behavior be investigated from BLF recordings?
- Yes, when the recordings contain relevant communication and the symptom is represented in the available data. The analysis compares observable evidence and states what cannot be established from the supplied files.
- Can the decoding process be repeated for multiple recordings?
- Yes. Where the data and DBC structure are suitable, a repeatable converter or batch-processing utility can be delivered for recurring analysis steps.
- Can BLF data be converted for further review?
- A focused conversion workflow can be provided for supported automotive data formats, with the output and interpretation defined by the supplied recordings, DBC, and engineering question.
Discuss the evidence
Discuss a BLF Project
Send a BLF recording, its DBC, and a short problem description to discuss the required decoding or analysis.