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Signal resolution method for quickly positioning CAN signal by utilizing diagnosis signal

An analysis method and signal technology, applied in general control systems, instruments, electrical testing/monitoring, etc., can solve problems such as low signal frequency, normal communication interference of diagnostic messages, affecting the normal operation of vehicles, etc., to reduce interference and shorten analysis. Periodic, time-sensitive effects

Active Publication Date: 2017-12-08
中汽院新能源科技有限公司 +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The frequency of the diagnostic request signal is not only low, but the diagnostic message it sends may interfere with the normal communication of the bus to a certain extent, and even affect the normal operation of the vehicle in some cases.

Method used

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  • Signal resolution method for quickly positioning CAN signal by utilizing diagnosis signal
  • Signal resolution method for quickly positioning CAN signal by utilizing diagnosis signal
  • Signal resolution method for quickly positioning CAN signal by utilizing diagnosis signal

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Embodiment Construction

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be mechanical connection or electrical connection, or two The internal communication of each element may be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms according to specific situations.

[0034] The present ...

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Abstract

The invention provides a signal resolution method for quickly positioning a CAN signal by utilizing a diagnosis signal. The method comprises the following steps: connecting a diagnostic apparatus to a benchmark vehicle diagnosis interface, carrying out diagnosis request on a benchmark vehicle and recording a diagnosis signal; adopting CAN signal acquisition hardware to connect with a communication CAN line to read communication CAN data, adopting CAN signal acquisition software to display the communication CAN data and recording the CAN data; carrying out format conversion on the recorded diagnosis signal and the CAN data; determining effective identification zones of all CAN signals in the diagnosis signal and the CAN data, and calculating similarity of the effective identification zones; and outputting the similarity of the effective identification zones and the CAN signals in the form of a matrix, and carrying out verification on the CAN signals in the matrix according to the sequence of the similarity of the effective identification zones from high to low, and finishing positioning of the CAN signals. The method is simple to operate, high in operation speed and wide in application range.

Description

technical field [0001] The invention relates to the field of electric vehicle performance testing, in particular to a signal analysis method for quickly locating CAN signals by using diagnostic signals. Background technique [0002] With the vigorous development of the new energy electric vehicle industry, accurate testing and evaluation of international advanced new energy vehicles has become one of the main tasks of the current automotive industry. Accurate and reliable signal acquisition can provide a basic guarantee for high-quality testing and evaluation of various new energy vehicles. Compared with signals obtained by other means, communication CAN signals have a series of advantages such as high reliability, high frequency, and better real-time performance. And with the continuous introduction of various advanced new energy vehicles, higher requirements are put forward for the timeliness of test evaluation. Therefore, it is of great significance for the testing and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213
Inventor 欧阳周舟关静杨欣茹唐国强徐磊王鹏尹华钢
Owner 中汽院新能源科技有限公司
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