The resulting behavior of the sensor voter, and checks that it is sufficiently reliable, is traditionally tested by massive simulation, which is very costly. The rounding makes the model non-linear.ĭepending on the type of sensors (range, measurement uncertainty, etc) a typical voting algorithm needs to be configured by setting different constants(thresholds etc). If one disregards the floating point rounding, the latches and the output have piecewise linear definitions. The output is computed from the input of the three sensors and from these latches. The sensor voter model can be thought of as consisting of a set of floating point latches that are updated at every reading. The voting mechanism averages/centers the set of three input values over time to avoid being overly affected by a single faulty sensor. To create a reliable signal, the outputs of three identical sensors are composed into a single signal by a voting component. In order to meet high redundancy requirements in avionics, a common technique is to use triple redundant sensor voters. We have tested the performance in real world industrial examples and in this blog post we will take a look at the floating point performance of PSL on a real world problem from avionics. * Additional Requirements: Reflashing software application, data subscription from OEM and a PC with Internet access.In a previous blog post, a playful concrete example was given to show off PSL’s newly added support for IEEE 754 floating point calculations. The interface connects to a PC (not included), and to the vehicle through the OBD connector. Pass Thru Pro IV includes the necessary software device drivers, and the vehicle communication interface. Upgradable through user-installable software. Pass Thru Pro IV can program emission-related ECUs on any J2534-compliant vehicle, using software provided directly from automotive manufacturers.* Meets SAE J2534 reprogramming standards which are required standard for every auto sold in the US since model year 2004.Ĭompatible with SAE J2534-1 and J2534-2 including 04.04 and v500 API reprogramming standards for every automaker. Fix software-controlled driveability issues and emission issues, program new ECUs. Replace the existing software/firmware in electronic control units (ECUs) with updated OEM software. OEM-level reprogramming brought to the independent shop. SAE J2534 Compliant Programming Interface
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