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Data recording method and system of bcm controller and fault diagnosis method

A data recording and controller technology, which is applied to circuits or fluid pipelines, vehicle components, transportation and packaging, etc., can solve problems such as difficult fault location, difficulty in troubleshooting, and inability to analyze faults efficiently and quickly, and narrow the scope. , the effect of improving the service life

Active Publication Date: 2018-10-16
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In addition, the BCM controller is often arranged inside the instrument panel, and it becomes very difficult to disassemble and test the PIN pin of the controller
Due to the diversity of its functions and the complexity of the use environment, it is difficult to effectively locate the fault when complex faults, especially sporadic faults, make troubleshooting very difficult, and it is impossible to analyze faults efficiently and quickly

Method used

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  • Data recording method and system of bcm controller and fault diagnosis method
  • Data recording method and system of bcm controller and fault diagnosis method

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0024] Such as figure 2 As shown, the present invention includes a data storage unit, a class encoding unit, a data encoding unit, and a data writing unit. In the BCM controller, multiple sets of large storage areas are set according to addresses, and multiple storage cells (ie, data storage units) are set in each large storage area. Since the action data that the BCM controller needs to observe includes door lock type, door lock unlock type, wiper action type, light action type, MCU reset times, etc., the door lock type, door lock unlock type, wiper action type, etc. , lighting action type, MCU reset times and other data are divided into several categories, and each category uses a large storage area for storage. And each category can be divided into several subcategories according to the different execution actions. For example, the door lo...

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PUM

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Abstract

The invention relates to the technical field of automobile controllers, in particular to a data recording method and system for a BCM controller and a fault diagnosis method. Class codes are given to BCM action data needing observing according to subclasses; a plurality of storage cells for circularly storing the class codes are set; the class codes corresponding to the BCM action data are continuously and circularly stored in the storage cells, a data number is given to the class code stored in each storage cell, and the data numbers are stored together; and the data numbers are circularly used finite consecutive numbers, and the data number currently stored in any storage cell and the data number stored in the adjacent storage cell in the last round are not continuous. The sequence of recording the data can be distinguished by means of partitioned recording of the data in combination with the data numbers, so that the action executed at last is recognized, the troubleshooting range is narrowed, and problems are solved more rapidly.

Description

technical field [0001] The invention relates to the technical field of automobile controllers, in particular to a data recording method and system of a BCM controller and a fault diagnosis method. Background technique [0002] As one of the important controllers of body parts, the BCM controller has gradually integrated automatic wiper, engine immobilizer (IMMO), tire Pressure monitoring (TPMS) and other functions to meet people's ever-increasing requirements for safety and comfort. [0003] Due to the complexity and diversity of the automotive environment, the automotive electronic control module needs to withstand an extremely wide voltage range, and it must withstand large mechanical vibrations, shocks, and ground offsets and waves during driving, impact, and transportation. Surge voltage, radio electromagnetic wave interference. [0004] In addition, the BCM controller is often arranged inside the instrument panel, and it becomes very difficult to disassemble and test ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/023
CPCB60R16/0232
Inventor 周冬文雯贺琳曼
Owner DONGFENG MOTOR CORP HUBEI
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