Automatic configuration method for CAN bus slave node identifiers in automatic testing device

A CAN bus, automatic test technology, applied in the direction of bus network, data exchange through path configuration, digital transmission system, etc., can solve the problems of complex ATE operation process, poor interchangeability of test modules, poor scalability of test modules, etc., to achieve The effect of shortening development time, reducing development cost, and improving scalability

Inactive Publication Date: 2015-01-28
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of the above problems, the present invention discloses a method for automatically configuring CAN bus slave node identifiers in automatic test equ

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  • Automatic configuration method for CAN bus slave node identifiers in automatic testing device
  • Automatic configuration method for CAN bus slave node identifiers in automatic testing device
  • Automatic configuration method for CAN bus slave node identifiers in automatic testing device

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Embodiment Construction

[0031] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The present embodiment is based on the integrated test bench of the helicopter airborne subsystem to illustrate the automatic configuration method of the CAN bus slave node network identifier of the present invention, that is: the automatic configuration of the CAN bus slave node network identifier in the helicopter airborne subsystem integrated test bench configuration method.

[0033] The commonly used airborne subsystems of helicopters generally include: more than 20 subsystems such as aircraft control, hydraulic control, fuel, AC power supply, DC power supply, engine control, lubricating oil, anti-icing, landing gear, and instruments. Helicopter airborne subsystem comprehensive test bench (hereinafter referred to as "test bench") designs corresponding test modules (slave nodes) for different airborne subsystems, such as ...

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Abstract

The invention belongs to the related field of distributed type communication control technologies, and discloses a method for achieving automatic function identifying and automatic network address distribution of CAN bus slave nodes in an automatic testing device. In order to automatically build a CAN bus network, an automatic configuration method for CAN bus system slave node network identifiers based on a client/server mode is provided. The method includes two stages including the node function identifying stage and the node address automatic distribution stage; fixed function codes are programmed in the slave nodes to conduct node function identification, a network state machine is adopted for conducting automatic distribution of slave network addresses, message transmitting conflicts of the slave nodes with the same function when address distribution is requested are avoided through asynchronous electrification, and automatic configuration of the CAN bus system node identifiers is accordingly achieved. The technology can be applied to the distributed automatic testing device based on a CAN bus, and node modules in a CAN bus system have the good interchangeability and the good expansibility.

Description

technical field [0001] The invention belongs to the related field of distributed communication control technology, and specifically relates to a method for automatically identifying the function of CAN bus slave nodes in automatic testing equipment and automatically assigning network addresses. Background technique [0002] With the rapid development of communication technology, electronic technology and computer technology, Automatic Testing Equipment (ATE), which can comprehensively test product performance, is widely used in the fields of aircraft, automobiles and robots. With more and more components of ATE, the bus technology has become an inevitable choice to improve the efficiency of ATE testing. Among various bus technologies, the CAN (Controller Area Network) bus technology based on the asynchronous serial transmission communication protocol is characterized by its multi-master mode, active filtering and retransmission of messages, extremely low bit error rate, hig...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/24H04L12/26
Inventor 任秉银梁兆东崔贤玉
Owner HARBIN INST OF TECH
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