Title: FPGA based emulation of multiple 1-wire sensors for hardware in the loop tests
Abstract: In this paper a Field Programmable Gate Array (FPGA) based emulator of multiple 1-Wire temperature sensors is proposed. The system is developed for the verification of an electronic control system. Various possible design approaches are briefly discussed. Due to the high number of sensors that can be emulated simultaneously, a FPGA based solution is proposed. The system is implemented on an off-the-shelf FPGA evaluation board. For interfacing this board with the physical 1-Wire buses, a custom made bus interface is developed. The sensor emulation itself runs on the FPGA and replicates the functional behavior of 1-Wire temperature sensors. The architecture of the FPGA is structured in logic modules, such as timing analysis, sensor logic or slave registers. Each of these modules emulates a specific part of the sensor's functionality. Additionally, a slave control module is developed which allows remote access to the emulated slaves. Thus, it's possible to remote control tests from a standard computer, by configuring the individual slaves and setting defined temperature values. Finally, a functional test, verifying the basic functionality of the developed system, is presented in the paper and a brief conclusion as well as an outlook towards future enhancements of the developed system is given.
Publication Year: 2016
Publication Date: 2016-04-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 2
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