【Smart Kitchen】Environmental Sensor PCB Design

太阳上的骑士

【Smart Kitchen】Environmental Sensor PCB Design [Copy link]

 

The schematic diagram of the environmental sensor has been completed before. This time, the main focus is on drawing the device package and PCB.

There is nothing special about the device package. You can draw it according to the description in the data sheet. PCB drawing mainly requires

Pay attention to reducing the heat diffusion of SHT45. The first method is to reduce the connection between SHT45 PCB and other PCBs.

Second, do not lay copper in the SHT45 PCB area to reduce heat diffusion.

PCB front:

PCB back side:

After the environmental sensor board is completed, you need to make an 8*8 ToF sensor board.

秦天qintian0303

You can make some copper cladding to avoid air gaps

qwqwqw2088

Three-dimensional circuit drawing is really good

What does "Don't place copper in the SHT45 PCB area to reduce heat spread" mean?

qwqwqw2088

Line 2 in the box can be moved right

Close to the hole

太阳上的骑士

qwqwqw2088 posted on 2022-9-5 07:29 Three-dimensional circuit drawing is really good. "Don't lay copper in the SHT45 PCB area to reduce heat diffusion." What's the saying about this...

This is mainly because the sensor needs to be heated to remove the impact of polymer contamination, and to reduce the offset caused by long-term operation in a high-humidity environment. Good heat dissipation has low heating efficiency and high power consumption.