Calculadora de Temporización Bus LIN
Calcula la temporización de trama LIN, tiempo de campo break y velocidad de transmisión.
Fórmula
T_{bit} = \frac{1}{baud\_rate},\quad T_{frame} = (13+1+10+10+10N+10) \cdot T_{bit}
Referencia: LIN Specification Package Revision 2.2A
Cómo Funciona
The LIN (Local Interconnect Network) bus is a serial communication protocol designed for automotive networks, providing a low-cost, simple alternative to CAN bus for less critical communication. The LIN frame structure consists of specific timing components that define how data is transmitted between nodes, with precise bit timing critical for reliable communication.
Ejemplo Resuelto
Problem: Calculate the frame transmission time for a LIN message with 2 data bytes at 9.6 kbps Solution: 1. Bit time (Tbit) = 1 / 9600 = 0.104 ms 2. Break field: ≥13 bits = 13 × 0.104 ms = 1.352 ms 3. Delimiter: 1 bit = 0.104 ms 4. Sync field: 10 bits = 1.04 ms 5. Identifier: 10 bits = 1.04 ms 6. Data (2 bytes): 16 bits = 1.664 ms 7. Checksum: 10 bits = 1.04 ms Total frame time: ≈ 6.236 ms
Consejos Prácticos
- ✓Always verify the exact baud rate of your LIN network
- ✓Consider temperature and electrical noise when designing LIN interfaces
- ✓Use standard LIN slave timing windows to ensure reliable communication
Errores Comunes
- ✗Incorrectly calculating bit time for different baud rates
- ✗Neglecting the variable length of data field
- ✗Misunderstanding the mandatory frame components
Preguntas Frecuentes
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