Advanced driver assistance systems test-interface for automated driving sensors

Patent metadata

Field	Value
Publication number	US-11091169-B2
Application number	US-201815934041-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Mar 23, 2018
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

An object sensor test system includes a sensor and a test bench. The sensor includes a test interface configured to receive test data and at least one control signal, selectively inject the test data into a selected input of a processing chain based on the at least one control signal, and selectively extract processed test data at a selected output of the processing chain based on the at least one control signal. The test bench is configured to transmit the test data and the at least one control signal to the test interface, receive the processed test data from the sensor, compare the received processed test data with expected data to generate a comparison result, and determine that a segment of the processing chain is operating normally or abnormally based on the comparison result.

First claim

What is claimed is:

1. An object sensor test system comprising:
a sensor comprising a receiver configured to receive a reflected signal and a processing chain that includes a plurality of processing components configured to process at least one measurement signal generated in response to the reflected signal,
the sensor further comprising a first test interface configured to receive test data and at least one control signal, selectively inject the test data into a selected input of a plurality of inputs in the processing chain based on the at least one control signal, and selectively extract processed test data at a selected output of a plurality of outputs in the processing chain based on the at least one control signal, wherein the selected output is downstream from the selected input in the processing chain; and
a test bench comprising a second test interface configured to communicate with the first test interface, the test bench configured to transmit the test data and the at least one control signal to the first test interface, receive the processed test data from the sensor, compare the received processed test data with expected data to generate a comparison result, and determine that a segment of the processing chain is operating normally or abnormally based on the comparison result.

2. The object sensor test system of claim 1 , wherein the segment of the processing chain corresponds to a processing component of the plurality of processing components located between the selected input and the selected output.

3. The object sensor test system of claim 1 , wherein the test bench is configured to select the selected input based on a processing component of the plurality of processing components selected for testing, and select or generate the test data to transmit to the first test interface based on the selected input.

4. The object sensor test system of claim 3 , wherein the test data is selected or generated from a plurality of hierarchical data types, each of the plurality of hierarchical data types corresponding to a different segment in the processing chain.

5. The object sensor test system of claim 3 , wherein the test data is selected or generated from a virtual raw measurement data, a virtual three-dimensional (3D) point cloud data, virtual object data, or advanced driver assistance systems (ADAS) data.

6. The object sensor test system of claim 1 , wherein the test bench is configured to select the selected output, and select or generate the expected data based on the test data and the selected output.

7. The object sensor test system of claim 1 , wherein the sensor is a Light Detection and Ranging (LiDAR) sensor, and the processing chain is configured to generate a sensor output data based on the at least one measurement signal.

8. The object sensor test system of claim 1 , wherein the test bench is an advanced driver assistance systems (ADAS) test bench configured to test an ADAS algorithm triggered in response to the test data.

9. The object sensor test system of claim 1 , wherein the first test interface includes at least one multiplexer configured to control, based on the at least one control signal, a processing component having the selected input to receive the test data and disable an input corresponding to a data path originating at the receiver.

10. The object sensor test system of claim 9 , wherein the at least one multiplexer is configured to receive, based on the at least one control signal, the processed test data from a processing component having the selected output and transmit the processed test data to the test bench.

11. The object sensor test system of claim 1 , wherein the test bench is configured to select an input among the plurality of inputs according to a rule and select an output among the plurality of outputs along the processing chain according to the rule, and identify a faulty processing component of the plurality of processing components based on the selection of the input and the output.

12. The object sensing test system of claim 11 , wherein the test bench is configured to select the test data from a plurality of hierarchical data types based on the selection of the input and the output according to the rule.

13. A method of testing an object sensor comprising a processing chain that includes a plurality of processing components configured to process at least one measurement signal generated in response to a reflected signal, the method comprising:
transmitting test data and at least one control signal to the object sensor;
selectively injecting the test data into a selected input of a plurality of inputs in the processing chain based on the at least one control signal;
selectively extracting processed test data at a selected output of a plurality of outputs in the processing chain based on the at least one control signal, wherein the selected output is downstream from the selected input in the processing chain;
comparing the processed test data with expected data to generate a comparison result; and
determining that a segment of the processing chain is operating normally or abnormally based on the comparison result.

14. The method of claim 13 , further comprising:
selecting the selected input based on a processing component of the plurality of processing components selected for testing; and
selecting or generating the test data to transmit to the object sensor from a plurality of test data based on the selected input.

15. The method of claim 13 , further comprising:
controlling, based on the at least one control signal, a processing component having the selected input to receive the test data and disable an input of the processing component corresponding to a data path originating at a receiver of the object sensor.

16. The method of claim 15 , further comprising:
selecting the selected input among the plurality of inputs according to a rule;
selecting the selected output according to the rule; and
identifying a faulty processing component among the plurality of processing components based on the selected input, the selected output, and the comparison result.

17. An object sensor comprising:
a receiver configured to receive a reflected signal and generate at least one measurement signal based on the received reflected signal;
a processing chain that includes a plurality of processing components configured to process the at least one measurement signal; and
a test interface configured to receive test data and at least one control signal, selectively inject the test data into a selected input of a plurality of inputs in the processing chain based on the at least one control signal, and output processed test data at an output of the processing chain, the processed test data being derived from the test data.

18. The object sensor of claim 17 , wherein the object sensor is a Light Detection and Ranging (LiDAR) sensor, and the processing chain is configured to generate sensor data based on the at least one measurement signal.

19. The object sensor of claim 17 , wherein the test interface includes at least one multiplexer configured to control, based on the at least one control signal, a processing component having the selected input to receive the test data and to disable an input corresponding to a data path originating at the receiver.

20. The object sensor of claim 17 , wherein the output of the processing chain is a selected output of a plurality of outputs in the processing chain, and the test interface is configured to selectively receive the processed test

Assignees

• Infineon Technologies Ag

Inventors

• Druml Norbert

Classifications

• G01S7/4052

  by simulation of echoes · CPC title

• G01S7/4073

  involving an IF signal injection · CPC title

• G01S17/931

  of land vehicles · CPC title

• B60W50/0205 Primary

  Diagnosing or detecting failures; Failure detection models · CPC title

• B60W2050/021

  Means for detecting failure or malfunction · CPC title