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AssigneeConti Temic microelectronic GmbH
InventorLothar Weichenberger
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A method for the transmission of sensor data from a sensor assembly to one or more receivers is presented, in which, in response to a control signal, additional data are transmitted at least temporarily for a short time instead of the sensor data, whereby only a certain limited value range of the value range that is available for the sensor data transmission is used for the transmission of the additional data, so that even with receivers which do not recognize that the transmitted data are additional data, erroneous functions or malfunctions are to be excluded. Thus, especially that value range of the sensor data signal that is to be attributed to a noise of the quantity to be measured or of the sensor assembly and is therefore not evaluated by the receiver in the normal signal operation, is used for the transmission of the additional data. In occupant protection systems, the safety-uncritical value range of a sensor data signal, which leads to no triggering of the occupant protection system, can correspondingly be used for the transmission of the additional data.
Method for the transmission of a sensor data signal (s11) and an additional data signal (s14) from a sensor assembly (1) to at least one receiver of the sensor data signal (2) and one receiver of the additional data signal (3, 5) through a common transmission channel (4),
Method according to one of the preceding claims, in which the data transmission unit (13) comprises a monitoring unit (15), which detects the present actual values of the sensor data signal (s11) at least during the transmission of the additional data signal (s14), compares the present actual values with prescribed nominal values, and upon exceeding these nominal values terminates the transmission of the additional data signal (s14) and switches to the transmission of the sensor data signal (s11).
Method according to one of the preceding claims, in which the data transmission is achieved in digital code words,
Use of the method according to one of the preceding claims for detecting sensor production data, especially an individual sensor assembly number.
Acceleration sensor assembly for generating an acceleration signal in an occupant protection system,
Dependencies are inferred from the claim text.