Method of initializing a system for open/closed-loop control of the operational sequences of a motor vehicle and a system for carrying out the method
First Claim
1. A system for performing an open/closed-loop control of an operating sequence of a motor vehicle that includes a controller connected to a plurality of sensors via a data bus, the sensors being subdivided into sensors of the same type, the system comprising:
- an arrangement located in each of the plurality of sensors for, when a transmission request is sent from the controller, allowing each sensor to transmit a response staggered in time to the controller.
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Abstract
A method of initializing a system for open/closed-loop control of the operating sequences of a motor vehicle is described. The system has a controller which is connected to a number of sensors via a data bus. The sensors have suitable means which allow a response to be transmitted staggered in time. In order to initialize the system, the controller first transmits a transmission request to sensors of the same type. The sensors of the same type transmit responses staggered in time back to the controller. During the transmission of the responses, a data field of each response is overwritten by the controller with a sensor-specific identifier and a corresponding transmission priority.
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Citations
9 Claims
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1. A system for performing an open/closed-loop control of an operating sequence of a motor vehicle that includes a controller connected to a plurality of sensors via a data bus, the sensors being subdivided into sensors of the same type, the system comprising:
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an arrangement located in each of the plurality of sensors for, when a transmission request is sent from the controller, allowing each sensor to transmit a response staggered in time to the controller. - View Dependent Claims (2, 3)
the arrangement includes a random generator.
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3. The system according to claim 1, wherein:
the data bus includes a CAN bus.
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4. A method of initializing a system for an open/closed-loop control of an operating sequence of a motor vehicle that includes a controller connected to a plurality of sensors via a data bus, the method comprising the steps of:
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subdividing the sensors into sensors of the same type;
causing the controller to transmit a transmission request to the sensors of the same type;
causing the sensors of the same type to transmit a response to the controller that is staggered in time by an operation of a staggering arrangement; and
during the transmission of the response, causing the controller to overwrite a data field of each response of the sensors with a sensor-specific identifier and a corresponding transmission priority. - View Dependent Claims (5, 6, 7, 8, 9)
each sensor includes the staggering arrangement, and the staggering arrangement includes a random generator.
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6. The method according to claim 4, further comprising the step of:
storing in a non-volatile memory a result of the overwriting of each response with the sensor-specific identifier and the corresponding transmission priority.
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7. The method according to claim 4, further comprising the steps of:
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identifying the plurality of sensors; and
after the identifying step, assigning the plurality of sensors to respective locations.
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8. The method according to claim 7, wherein the step of assigning the plurality of sensors includes the step of:
comparing signals delivered by the plurality of sensors with test signals.
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9. The method according to claim 4, wherein:
the data bus includes a CAN bus.
Specification