Design of data acquisition unit
Varsamäki, Teemu (2018)
2018
Sähkötekniikka
Tieto- ja sähkötekniikan tiedekunta - Faculty of Computing and Electrical Engineering
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Hyväksymispäivämäärä
2018-12-05
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201811022535
https://urn.fi/URN:NBN:fi:tty-201811022535
Tiivistelmä
This master’s thesis describes the process of designing hardware for a data acquisition unit. The unit was designed to be a general purpose IoT hardware platform. It has interfaces for sensors and other peripherals and a cellular modem for communicating with a cloud service.
Manufacturability was an important design aspect because production volumes will be high. The processes for manufacturing and production testing were chosen early. The unit was designed so that it is cost effective to manufacture and test with the chosen processes.
The unit needs to comply to the legislation of Europe and North America. Especially compliance to the EMC standards is important. The unit was also designed to operate in the harsh EMC conditions of industrial environments.
The unit was tested carefully to verify it operates correctly in all conditions. Compliance to the EMC standards was also tested. With the first revision the unit failed a part of the tests. Some components needed to be changed and the circuit board was modified. All the tests were passed with the second revision of the unit. It is now ready for mass production.
Manufacturability was an important design aspect because production volumes will be high. The processes for manufacturing and production testing were chosen early. The unit was designed so that it is cost effective to manufacture and test with the chosen processes.
The unit needs to comply to the legislation of Europe and North America. Especially compliance to the EMC standards is important. The unit was also designed to operate in the harsh EMC conditions of industrial environments.
The unit was tested carefully to verify it operates correctly in all conditions. Compliance to the EMC standards was also tested. With the first revision the unit failed a part of the tests. Some components needed to be changed and the circuit board was modified. All the tests were passed with the second revision of the unit. It is now ready for mass production.