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Design for Embedded Diagnostics Based on Vehicle OBD Ⅱ
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Yingqi Qin, Xuefeng Chen
Automotive Engineer | 2023, (8) : 42 - 48
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Automotive Engineer | 2023, (8): 42-48
Design for Embedded Diagnostics Based on Vehicle OBD Ⅱ
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Yingqi Qin, Xuefeng Chen
Affiliations
  • NIO Co., Ltd., Shanghai 201800
Published: 2023-08-15 doi: 10.20104/j.cnki.1674-6546.20230012
Outline
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A diagnosis device is designed, which can diagnose vehicle state through standard port of the On-Board Diagnostics Ⅱ (OBD Ⅱ). Its software is designed based on STM32 single chip microcomputer, the physics layer communicates with vehicle gateway via CAN, the communication standard abides by the Unified Diagnostic Services (UDS) protocol and operates in three modes, i.e. communication with cell phone via Bluetooth, communication with computer via serial port connection, and operate offline via command memory. The embedded software is developed by hierarchical architecture based on C programming language.

On Board Diagnostics Ⅱ (OBD Ⅱ)  /  Diagnosis  /  Unified Diagnostic Services (UDS)  /  Embedded
Yingqi Qin, Xuefeng Chen. Design for Embedded Diagnostics Based on Vehicle OBD Ⅱ[J]. Automotive Engineer, 2023 , (8) : 42 -48 . DOI: 10.20104/j.cnki.1674-6546.20230012
Year 2023 volume Issue 8
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doi: 10.20104/j.cnki.1674-6546.20230012
  • Online Date:2025-11-25
  • Published:2023-08-15
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  • Revised:2013-01-13
Affiliations
    NIO Co., Ltd., Shanghai 201800
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
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Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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