Status | In progress |
Owner | @Eliana Tejeda |
|---|---|
Contributors | @Mikail Sadic |
Approved | @Diya Rajon |
Due date | Eventually |
Decision |
|
On this page |
Timeline:
Problem statement
Controls is tasked with creating a list of requirements and components for the Pedals Daughter Board. We need to come up with a design that accommodates for the PST-360, Hall-Effect Through-Shaft Rotary Position Sensor and ETL-200-375 (M) SERIES transducer pressure sensor.
Research insights
The hall effect sensor is a non-contact sensor, based solely on magnetic sensors that generate electrical signals proportional to the magnetic field applied.
This senor can produce analog or digital signal depending on the circuit design.
The transducer pressure sensor gives a current reading 4ma (idle) - 20ma (max pressure), from 25psi - 2500psi. Current understanding from mech is that we have a range of 25psi - 600psi.
Solution
We are creating a daughter board to handle all sensing and isolation for both accel and brake pedal. We are inputting the analog voltage into ADC’s of a PSOM to be exported through CAN.
Datasheets:
Hall effect: Nissan VQ35
Transducer: ETL-200-375.pdf
Design options
Need to isolate power for 5V to power the hall effect sensors, make sure all signals are isolated, and feed into the ADC’s.
Current Status
Board schematic is done, layout begun. Under review.
Testing
Hall effect sensor - Behaving as intended. 0.5V - 4.5V analog output.
Transducer - Behaving as intended for now. 4ma output at idle confirmed, needs more testing for upper range.