Test data recording device

Abstract

The invention relates to a test data recording device. The test data recording device is characterized in that an interface chip, a storer, a CAN transceiver and a real-time clock are respectively connected with a main control microprocessor, an upper computer interface module, a data storage module, a CAN communication module, a protocol analysis module and a timestamp module are embedded in the main control microprocessor, the upper computer interface module and the interface chip in the periphery circuit of the main control microprocessor are connected with each other through a bus, and an establishing device is in data connection with an upper computer. The data recording process of the device does not need manual interference, and the device can be powered on and off along with a testing system, can start and stop the data recording process automatically, stores data automatically, and does not need further arrangement of an external sensor. Moreover, an ECU does not need software compiled for the device, so that the problem that reliability test process monitoring occupies manpower and material resources is solved, and the problem that data are hard to collect on accidental fault sites of the testing system is also solved.

Description

technical field [0001] The invention relates to a test data recording device, in particular to the field of development and test of electronic control system (ECU) for vehicles, especially the field of development and test of diesel engine electronic control unit (EECU) and vehicle electronic control unit (VECU). Background technique [0002] At present, with the functions of commercial vehicles and passenger vehicles becoming more and more abundant and the requirements of emission regulations becoming more and more stringent, the application of electronic control units (hereinafter referred to as ECUs) is increasing, and the complexity of ECU software is also increasing. More and more tests are carried out to verify the correctness and reliability of product design. In the early stage of ECU product development, especially when the ECU product is still immature, a large number of developers who are familiar with the software and hardware structure of the ECU are often requi...

AI Technical Summary

Problems solved by technology

[0003] In view of the problems faced in the prior art, the object of the present invention is to provide a test data recording device, the data recording process of the device does not require manual intervention, and can automatically start and stop the data recording process with the power on and off of the test system, and automatically Save data without adding external sensors, and ECU does not need to write new software for this device, which solves the problem of manpower and material resources occupied during the monitoring reliability test process, and also solves the problem of difficulty in field data collection for occasional failures of the test system

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