170907 - Signals and CAN

Question 1

Signals are transferred in digital format across ECU’s.

Answer 1

True

Question 2

In general, by digitizing a signal, we lose information.

Answer 2

True

Question 3

Sample frequency is an indicator of how much information we lost in term of time resolution.

Answer 3

True

Question 4

The number of bits of a digital signal inform us about its resolution and the quantization error.

Answer 4

True

Question 5

If we convert an analog signal to digital and use 10 bits, the digital signal can only assume 1024 values.

Answer 5

True

Question 6

Use an extremely high sampling frequency and bit resolution may be the best solution.

Answer 6

False

Question 7

ECU’s may communicate in different ways, a common one being via the CAN bus.

Answer 7

True

Question 8

The (CAN) bus reduces the wiring needed to connect all sensors and ECU’s.

Answer 8

True

Question 9

Analog signals are transferred on the CAN bus.

Answer 9

False

Question 10

The CAN bus is very robust.

Answer 10

True

Question 11

It is possible to log and access the CAN bus in real time with a PC.

Answer 11

True

Question 12

Each signal (frame) have a different priority which is used to avoid frame collisions on the CAN bus.

Answer 12

True

Question 13

The DBC files explain the priority of the different ECU’s.

Answer 13

False