Method for updating an operating function of a sensor, and sensor module
First Claim
1. A method for updating an operating function of a sensor of a sensor module located in a vehicle wheel, the sensor module including the sensor, an interface, a memory with a boot memory area for storing a boot function, and an operating memory area for storing an operating function, the method comprising the following steps:
- executing the boot function that is stored in the boot memory area of the memory of the sensor module;
checking whether an update of the operating function of the sensor is intended to be performed;
if an update of the operating function of the sensor is intended to be performed, carrying out a plausibility check;
if the plausibility check is successful, updating the operating function of the sensor by receiving data relating to a current operating function into the interface of the sensor module from an external unit and writing the data to the operating memory area, wherein receiving the data and writing the data to the operating memory area take place in parallel;
updating validity information relating to the operating function as soon as the received data relating to a current operating function have been completely written to the operating memory area; and
executing the current operating function.
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Accused Products
Abstract
A method for updating an operating function of a sensor, which has a memory that has a boot memory area for storing a boot function and an operating memory area for storing an operating function. The method has the following steps: execution of the boot function; checking whether an update for the operating function of the sensor needs to be performed; if an update for the operating function of the sensor does need to be performed, performing a plausibility check; if the plausibility check was successful, updating the operating function of the sensor such that data for an up-to-date operating function are received from an external unit and the data are written to the operating memory area. The reception of the data and the writing of the data to the operating memory area take place in parallel.
22 Citations
17 Claims
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1. A method for updating an operating function of a sensor of a sensor module located in a vehicle wheel, the sensor module including the sensor, an interface, a memory with a boot memory area for storing a boot function, and an operating memory area for storing an operating function, the method comprising the following steps:
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executing the boot function that is stored in the boot memory area of the memory of the sensor module; checking whether an update of the operating function of the sensor is intended to be performed; if an update of the operating function of the sensor is intended to be performed, carrying out a plausibility check; if the plausibility check is successful, updating the operating function of the sensor by receiving data relating to a current operating function into the interface of the sensor module from an external unit and writing the data to the operating memory area, wherein receiving the data and writing the data to the operating memory area take place in parallel; updating validity information relating to the operating function as soon as the received data relating to a current operating function have been completely written to the operating memory area; and executing the current operating function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A sensor module, comprising:
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a sensor for measuring a physical variable; a control module for executing an operating function for controlling said sensor; an interface configured to interact with said control module to receive data relating to a current operating function from an external unit; said control module having a memory with a boot memory area for storing a boot function and an operating memory area for storing an operating function of said sensor; and an update module having an execution unit for executing the boot function, an evaluation unit for checking whether an update for the operating function of the sensor is intended to be performed, a security unit configured for performing a plausibility check if an update for the operating function of the sensor is intended to be performed, and a writing unit for writing received data relating to a current operating function to the operating memory area; said writing unit being configured to write the received data relating to the current operating function to said operating memory area in parallel with receiving the data relating to the current operating function; wherein said sensor, said control module, said interface, and said update module are located within said sensor module; said memory including a non-volatile memory for storing validity information relating to the operating function, the validity information relating to the operating function being updated in said non-volatile memory as soon as the received data relating to the current operating function have been completely written to said operating memory area and before the current operating function is executed. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification