Is it still tested in a car with high temperature and sultry heat, no air conditioning, dust and dust everywhere, and testing in large construction machinery that is noisy and dangerous? I really don't have to do this now, so I can see how the engineers at other homes are testing.
1, no hot air in summer
The CAN bus test points of the car are generally near the steering wheel, but the temperature of the car is very high after exposure to the sun. Some engineers will drop the temperature slightly in order to avoid exposure to the experimental building or in the shade. But the bus test is not so easy, the bus is generally tested outdoors and the parking location is not so choice.
Figure 1 interior temperature
2, the car is dust
In order to verify the power consumption, acceleration, braking and other performances of cars, trains and subways, it is often necessary to put some sandbags into the car. After the experiment was completed, the car was full of sand and dust. Testing the CAN bus in the car was a torment for those who loved the clean.
Figure 2 sandbag simulation
3, wireless test CAN bus
The most common and most commonly used tool in vehicle CANbus testing is the CAN box, but this method must be connected to the computer via the usb interface, ie the engineer must sit in the car with the computer. But with the popularity of high-speed wifi, CAN signals can be converted to wifi signals, so engineers can choose a relatively comfortable place to test through a computer or even a mobile phone.
Figure 3: CAN to wifi 
Figure 4 cover
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