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Method for operating a sensor assembly in a motor vehicle on the basis of a dsi protocol

A sensor device, a technology for motor vehicles, applied in the field of vehicles, can solve problems such as inability to maintain ASIL level and reduced reliability of output data

Active Publication Date: 2021-03-16
VALEO SCHALTER & SENSOREN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it must be expected that the reliability of the output data of the ANN will be reduced, so the specified ASIL level may not be maintained

Method used

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  • Method for operating a sensor assembly in a motor vehicle on the basis of a dsi protocol
  • Method for operating a sensor assembly in a motor vehicle on the basis of a dsi protocol

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Embodiment Construction

[0047] figure 1 A vehicle 1 with a sensor arrangement according to a preferred exemplary embodiment of the invention is shown schematically. The sensor device 2 has a central processing unit 3 and three sensor units S1 , S2 and S3 . The host computer 3 and the sensor units S1, S2, S3 are connected to each other via a bus 4, which is a two-wire bus. Furthermore, it is considered that the three sensor units S1, S2, S3 and the central processing unit 3 are connected in series with each other, that is to say in a so-called daisy-chain configuration.

[0048] The central processing unit 3 is the master defined by the above-mentioned DSI3 specification, which is connected to the three sensor units S1, S2, S3 through the bus 4, and they act as slaves defined by the DSI3 specification, so in general, there are bus. Furthermore, sensor units S1 , S2 , S3 are ultrasonic sensor units for transmitting and / or receiving ultrasonic signals, which represent ultrasonic sensor units of a par...

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Abstract

The invention relates to a method for operating a sensor assembly (2) in a motor vehicle (1) on the basis of a DSI protocol, wherein the sensor assembly (2) has a central unit (3) as a master and a plurality of sensor units (S1, S2, S3) as slaves controlled by the master, the central unit (3) and the senor units (S1, S2, S3) are connected to a bus line (4) and communication between the central unit (3) and the sensor units (S1, S2, S3) occurs via the bus line (4), characterized by the following method steps: transmitting a first message from the central unit (3) to a first sensor (S1) and subsequently; transmitting a second message from the central unit (3) to a second sensor (S2) without the central unit (3) waiting to receive a reply message from the first sensor (S1). In this way, sucha method for operating a sensor assembly (2) in a motor vehicle (1) is provided, in which communication between the master and the slaves can occur regularly with a high payload rate while a predefined ASIL is ensured.

Description

technical field [0001] The invention relates to a method for operating a sensor device in a motor vehicle based on the DSI protocol, wherein the sensor device has a central processing unit as master and a plurality of sensor units as slaves controlled by the master, the central processing unit and the sensors The units are connected to the bus, and the communication between the central processing unit and the sensor units takes place via the bus. The invention also relates to the use of such a method in a motor vehicle, a sensor device and a vehicle having such a sensor device. Background technique [0002] In the automotive field, the DSI3 bus and the DSI protocol can be used to communicate with sensors in the vehicle. The DSI protocol Distributed System Interface (see: "DSI3 Bus Standard", Revision 1.00, dated February 16, 2011, the specification of which is hereby expressly incorporated into this disclosure) is a A protocol that allows the construction of sensor network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/403
CPCH04L12/403H04L2012/40273H04L12/4013H04L67/12
Inventor M.哈莱克M.莱万道斯基
Owner VALEO SCHALTER & SENSOREN
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