Method and sensor bus system
AssigneeRobert Bosch GmbH
InventorsAlbrecht Klotz, Balint Nagy, Dirk Schmid, Michael Schumann, Torsten Reiner
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Abstract
A method for transmitting data in a sensor bus system and a sensor bus system. The sensor bus system includes an electronic controller, a plurality of sensors, and a twisted two-wire line between the electronic controller and the sensors, wherein the electronic controller is designed to supply electrical energy to the sensors via the twisted two-wire line, and the sensors are designed to transmit received information to the electronic controller in an I/Q-modulated manner via the twisted two-wire line.
Claims11
A sensor bus system, comprising:
- an electronic controller;
- a plurality of sensors;
- and
- a twisted two-wire line between the electronic controller and the plurality of sensors, wherein the electronic controller configured to supply the plurality of sensors with electrical energy via the twisted two-wire line, and wherein the plurality of sensors are configured to transmit received environmental information to the electronic controller in an I/Q (in-phase/quadrature)-modulated manner via the twisted two-wire line,
- wherein the twisted two-wire line connects the electronic controller and the plurality of sensors via a ring structure or a linear structure, in terms of information technology and energy,
- wherein the plurality of sensors include ultrasonic sensors,
- wherein the I/Q modulation uses a fundamental frequency of at least 100 KHz.
A sensor bus system comprising:
- an electronic controller;
- a plurality of sensors;
- and
- a twisted two-wire line between the electronic controller and the plurality of sensors, wherein the electronic controller configured to supply the plurality of sensors with electrical energy via the twisted two-wire line, and wherein the plurality of sensors are configured to transmit received information to the electronic controller in an I/Q (in-phase/quadrature)-modulated manner via the twisted two-wire line,
- wherein each of the plurality of sensors stores a data set representing preconfigured behaviors with respect to:
- transmission of measurement signals into an environment, and/or
- reception of echoes of the measurement signals, and/or
- transmission of the received information, in a sensor-specific manner, as raw data or as echo data evaluated in the sensor, which echo data in each case be selectively activated using the electronic controller.
A method for data transmission in a sensor bus system, in which a plurality of sensors and an electronic controller are connected to one another in terms of information by a twisted two-wire line, the method comprising the following steps:
- supplying electrical energy to the plurality of sensors by the electronic controller via the twisted two-wire line;
- receiving information by the plurality of sensors;
- I/Q (in-phase/quadrature) modulating the information in the plurality of sensors;
- and
- transmitting the I/Q-modulated information from the plurality of sensors to the electronic controller via the twisted two-wire line,
- wherein the twisted two-wire line connects the electronic controller and the plurality of sensors via a ring structure or a linear structure, in terms of information technology and energy,
- wherein the plurality of sensors include ultrasonic sensors,
- wherein the I/Q modulation uses a fundamental frequency of at least 100 KHz.
Dependencies are inferred from the claim text.