Tire pressure monitoring, a brief introduction to the systems by Dipl.-Ing. Michael Schröttle
Part 2:
Advertising philosophies:
Warning/Warning symbol only:
Problems:
a) User has no information about the tire pressure
b) Depending on the system, the user is lulled into a (possibly false) sense of security (see blind spots above)
Advantage:
a) no unnecessary distractions
Display of only one pressure value with indication of the wheel position:
Problems:
a) Distraction, as the display must be manipulated to query the values (usually a control button)
b) If pressure is lost in more than one tire, only one pressure value can be displayed.
Advantages:
a) The user can request to see the pressure values and thus achieve the aforementioned savings.
b) In case of a warning, the user is shown the wheel position and pressure value
Display all pressure values simultaneously:
Problems:
a) Minimal distraction due to additional display; however, this does not need to be manipulated to be read.
Advantages:
a) Complete information about the condition of the tire pressures at a glance
b) Changes are immediately visible
c) The system function and usually also the battery status can be seen at a glance; a sensor failure would be detected immediately.
d) Acoustic and visual warning with indication of pressure values
When considering failure probabilities, it makes sense to consider detectability and response options. A system should detect a failure, or at least make it detectable for the user, so that the user does not rely on a system that no longer functions. Furthermore, failures in the broadest sense should also include false warnings; here, too, detectability by the user is advantageous.
Example: When the sun shines from one side (e.g., left), the tire pressure in the left tire can quickly be 0.2 – 0.3 bar higher than in the right tire.
When all four pressure values are displayed simultaneously, the user can easily recognize this and classify it as unproblematic; an automatic system may have difficulties here.
TireMoni displays all pressure values simultaneously and recommends short metal valves, as the ADAC