Method and device for testing microcomputer control system of diesel locomotive

Abstract

The invention discloses a method and a device for testing a microcomputer control system of a diesel locomotive. A CAN bus or a serial bus is used for communication with an host computer to receive a test command from the host computer, and an inter CAN bus is used to receive the test command and transmits the test command to internal signal generation modules which generate a corresponding test signal according to the test command and transmit the test signal to equipment to be tested through an adapter cable; a signal detection module of a testing device detects an output signal of the equipment to be tested and transmits the output signal to a CPU board through the CAN bus, and the CAN bus or serial bus transmits the output signal to the host computer; and the host computer compares a given signal with the detected signal to realize the fully automatic closed loop test of the equipment to be tested. The fully automatic closed-loop test is a fully automatic loop test of the equipment to be tested which is implemented in a way that: the inside of the testing device adopts a distribution type module based on the CAN bus, the CPU board is connected with a digital quantity input and output board, a frequency board, a constant-current source board and a DA board through the internal CAN bus, and the testing device uses the external CAN bus or serial bus of the CPU board to communicate with the host computer and to realize the automatic circulating test of the equipment to be tested.

Description

Technical field [0001] The invention relates to a microcomputer control system testing method and device for a locomotive, in particular to a microcomputer control system testing method and device for a diesel locomotive based on a microcomputer network control system. Background technique [0002] The existing diesel locomotive microcomputer control system test devices are various in road bureaus and manufacturers, and they are basically test devices for specific models (diesel locomotives DF11 and DF8B series, etc.) and single-board testing of the equipment under test. The original design principle of the test device is basically composed of a potentiometer, a switch button, an indicator light, a frequency generator, a constant voltage and constant current source and other signal sources. Various test signals are manually given through potentiometers and switch buttons, and they are all open-loop control tests and individual test benches have some microcomputer functions. ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the fact that the existing microcomputer control system testing devices of diesel locomotives cannot well meet the needs of current testing, the present invention provides a new testing method and device for microcomputer control systems. System automatic testing and debugging needs to improve the overall level of diesel locomotive products; and the appearance is very beautiful, small in size, light in weight, easy to test directly on the locomotive, and adopts modular design to facilitate function expansion

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