BMS communication protocols (CAN bus) in Power Electronics - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the main communication protocol used in BMS.

Power Electronics

protocol = "[1]"

Drag options to blanks, or click blank then click option'

ASPI

BI2C

CCAN bus

DUART

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing CAN bus with simpler serial protocols like UART.

Choosing protocols mainly used for short-distance or chip-level communication.

The CAN bus is the primary communication protocol used in Battery Management Systems (BMS) for reliable data exchange.

2fill in blank

medium

Complete the code to set the CAN bus speed commonly used in BMS.

Power Electronics

can_speed = [1]  # speed in kbps

Drag options to blanks, or click blank then click option'

A500

B125

C1000

D9600

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 9600 which is a typical UART baud rate, not CAN bus speed.

Selecting 1000 kbps which is used but less common in BMS.

500 kbps is a common CAN bus speed in BMS applications balancing speed and reliability.

3fill in blank

hard

Fix the error in the CAN message ID assignment code.

Power Electronics

message_id = 0x[1]

Drag options to blanks, or click blank then click option'

A7FF

B1FFF

C800

D123

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1FFF which exceeds 11-bit standard ID range.

Confusing standard and extended CAN ID formats.

0x7FF is the maximum standard 11-bit CAN ID value used in BMS communication.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps cell numbers to their voltages if voltage is above 3.0V.

Power Electronics

cell_voltages = {cell: voltage for cell, voltage in battery_data.items() if voltage [1] 3.0 and cell [2] 'cell'}

Drag options to blanks, or click blank then click option'

A>

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than or not equal operators incorrectly.

Confusing key matching with partial string checks.

The comprehension filters voltages greater than 3.0V and keys not equal to 'cell' to map cell voltages.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps sensor IDs in uppercase to their temperature values if temperature is below 60.

Power Electronics

temp_sensors = [1]: [2] for [3], [2] in sensor_data.items() if [2] < 60}

Drag options to blanks, or click blank then click option'

Asensor_id.upper()

Btemp

Csensor_id

Dtemperature

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing variable names for temperature values.

Not converting sensor IDs to uppercase.

This comprehension maps uppercase sensor IDs to their temperature values when temperature is below 60 degrees.