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Changes for page Sensor Module

Last modified by Heimir Thordarson on 2026/07/05 12:56
From version 67.3
edited by Heimir Thordarson
on 2026/07/05 12:36
Change comment: There is no comment for this version
To version 64.8
edited by Heimir Thordarson
on 2026/03/23 19:39
Change comment: There is no comment for this version

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... ... @@ -259,7 +259,7 @@
259 259  (((
260 260  {{mathjax}}
261 261  $$
262 -Q = C_D \cdot A_D \sqrt{\frac{2 \cdot \Delta P}{\rho}}
262 +T = \frac{1}{\frac{1}{T_0} + \frac{1}{\beta} \ln\left(\frac{R_T}{R_0}\right)}
263 263  $$
264 264  {{/mathjax}}
265 265  )))
... ... @@ -267,34 +267,15 @@
267 267  
268 268  where:
269 269  
270 -* {{mathjax}}\(Q\){{/mathjax}}= Waterflow through the equivalent orifice
271 -* {{mathjax}}\(C_D \cdot A_D\){{/mathjax}}= practical cross section of the orifice
272 -* {{mathjax}}\(\Delta P\){{/mathjax}}= Pressure difference between the two pressure sensors
273 -* {{mathjax}}\(\rho\){{/mathjax}}= Density of the cooling liquid
270 +* {{mathjax}}\(\beta\){{/mathjax}}= material constant that defines the steepness of its resistance-temperature curve between two temperature points, usually 25/85 degrees celsius. In this case it is 3976 //**K.**//
271 +* {{mathjax}}\(T_0\){{/mathjax}}= The test temperature at which the thermistor is 10k {{mathjax}}\(\Omega\){{/mathjax}}, which in this case is 25 degrees celsius.
272 +* {{mathjax}}\(R_0\){{/mathjax}}= The resistance of the thermistor when it is 25 degrees celsius.
273 +* {{mathjax}}\(R_T\){{/mathjax}}= The live resistance of the thermistor.
274 274  
275 -The sensor used on the AR26 car is the [[Bosch Motorsport PST-F 1>>https://www.bosch-motorsport.de/content/downloads/Raceparts/Resources/pdf/Data%20Sheet_70496907_Pressure_Sensor_Combined_PST-F_1.pdf]] and has the following transfer function for the output voltages based on pressure and temperature.
276 276  
277 -=== Pressure sensor ===
278 278  
279 -The pressure sensor build into the PST-F 1 has an supply voltage of 5 volts and has a output voltage range of 0.5 to 4.5 volts. The following formula shows the pressure based on the output voltage.
280 280  
281 -{{mathjax}}
282 -$$
283 -P = 2.5 \cdot V - \frac{5}{4}
284 -$$
285 -{{/mathjax}}
286 286  
287 -Where:
288 -
289 -* {{mathjax}}\(P\){{/mathjax}} = Pressure from pressure sensor [bar]
290 -* {{mathjax}}\(V\){{/mathjax}} = Voltage output from the pressure sensor [volts]
291 -
292 -
293 -
294 -= Alternative Usecases =
295 -
296 -For the AR26 sensor module, it proved itself being useful in taking extra task if any other systems stopped working. During the Vehicel Status Video (VSV) was the sensor module used as the Vehicle Control Unit (VCU), but did not measure all of the sensors which the original VCU was intended to measure. This can be
297 -
298 298  = Bill of Materials =
299 299  
300 300  == Circuit Board ==