Method for testing a container warning device of a compensation container, and testing apparatus for testing a container warning device
AssigneeContinental Teves AG & Co. oHG
InventorsHans-Jürgen Neumann, Peter Tandler, Johann Ludwig
Life of this patent
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Abstract
A method for testing a reservoir warning apparatus of a fluid reservoir for a hydraulic motor vehicle brake system, with the reservoir warning apparatus comprising a switching unit with at least one reed contact as the switching element. In order to find all possible faults in the reed contact, a dynamic contact resistance and a transient response of the reed contact are measured at the preassembled switching unit.
Claims15
A method for testing a reservoir warning apparatus of a fluid reservoir for a hydraulic motor vehicle brake system, with the reservoir warning apparatus comprising a switching unit with at least one reed contact as the switching element, comprising:
- applying a periodic signal to the switching unit to periodically switch the reed contact to a final closed position;
- measuring a dynamic contact resistance and a transient response of the reed contact of the switching unit in a preassembled state after the signal is applied to the switching unit and before the reed contact reaches the final closed position during the periodic switching of the reed contact;
- and
- identifying possible faults based on multiple measurements of the dynamic resistance and/or transient response measured after the signal is applied to the switching unit and before the reed contact reaches the final closed position during the periodic switching of the reed contact, the multiple measurements occurring in different periods of the periodic switching.
A test apparatus for testing a reservoir warning apparatus, the test apparatus comprising:
- means for applying a periodic signal to the switching unit to periodically switch the reed contact to a final closed position;
- means for measuring a dynamic contact resistance and a transient response of the reed contact of the switching unit in a preassembled state after the signal is applied to the switching unit and before the reed contact reaches the final closed position during the periodic switching of the reed contact;
- and
- means for identifying possible faults based on multiple measurements of the dynamic resistance and/or transient response measured after the signal is applied to the switching unit and before the reed contact reaches the final closed position during the periodic switching of the reed contact, the multiple measurements occurring in different periods of the periodic switching.
Dependencies are inferred from the claim text.