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SENT protocol test system and method thereof

A protocol testing and monitoring module technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of inability to be common to all ECUs, many wiring harnesses and connectors, and high complexity, to simplify the test SENT process, The effect of shortening the test time period and simplifying the test conditions

Pending Publication Date: 2021-07-27
常州易控汽车电子股份有限公司
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Problems solved by technology

With this test method, although it is possible to test the transmission of the SENT signal and verify the action of the ECU after receiving the SENT, due to the large number of sensors and ECUs used in a car, the wiring harness required in the actual test And there are many connectors, and it is impossible to achieve common use among various ECUs. In addition, some test environments are harsh and require professional testers to operate, resulting in high cost, long time period and complexity for a SENT protocol test. High, making it very difficult to test the SENT protocol

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  • SENT protocol test system and method thereof
  • SENT protocol test system and method thereof

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[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present specification in conjunction with the accompanying drawings in the embodiments of the present specification. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] It should be noted that the terms "include" and "have" in the embodiments of this specification and the drawings, as well as any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other step...

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Abstract

The embodiment of the invention provides a SENT protocol test system and a method thereof. The SENT protocol test system comprises an upper computer, a SENT signal simulator, an ECU and a monitoring module, the upper computer is configured to be used for inputting corresponding virtual sensor parameters under a test environment condition, generating virtual data according to the virtual sensor parameters and transmitting the virtual data to the SENT signal simulator; the SENT signal simulator is configured to decode the received virtual data and then simulate the transmission of the SENT signal; the ECU is configured to be used for receiving the transmitted simulated SENT signal; and the monitoring module is configured to detect transmission of the SENT signal and to monitor an action after the verification ECU receives the SENT signal. According to the invention, the virtual sensor parameters are input through the upper computer, and then the SENT signal simulator simulates the SENT signal and sends the SENT signal to the ECU, so that the problem that in the prior art, the SENT protocol test can be carried out only after the whole vehicle sensor is placed in an actual environment is solved, the test conditions are simplified, the test complexity is reduced, the test time period is shortened, and the test cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a SENT protocol testing system and a method thereof. Background technique [0002] Single Edge Nibble Transmission (SENT) is a point-to-point, one-way reliable and economical vehicle data communication solution, which is used for data transmission between vehicle sensors and electronic control units (ECUs) , because there is no need for a receiver and an integrated transmitter, the cost is lower than CAN or Lin, and it has good transmission accuracy and speed. The digital data transmission speed can reach 30kb / s. Some companies gradually adopt this standard in power systems, and It is used in subsystems such as vehicle sensors, actuators, and Drive-by-wire remote control. Therefore, more and more sensors support SENT-type signals. [0003] The SENT protocol adopts single-wire data transmission, which reduces the number of signal wires, plus power and ground wires, a total of 3 w...

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Application Information

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IPC IPC(8): H04L12/26
CPCH04L43/18H04L43/50
Inventor 金泉池穆林孙磊磊李中方成郝守刚
Owner 常州易控汽车电子股份有限公司
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