SUV安全氣囊控制系統(tǒng)設(shè)計

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摘要: 作為主要的汽車被動安全裝備之一，安全氣囊系統(tǒng)通過和安全帶的配合使用，可以有效地保護駕駛員和乘員的安全，現(xiàn)在已越來越受到汽車廠和用戶所重視。經(jīng)過多年的發(fā)展和推廣，安全氣囊系統(tǒng)已經(jīng)在轎車、SUV等車型中被普遍應(yīng)用，并成功挽救了許多交通事故中乘員的生命，也被越來越多人們接受和認可。作為安全氣囊系統(tǒng)核心部件的安全氣囊控制單元 ACU（Airbag Control Unit），其控制著整個氣囊系統(tǒng)的工作，決定了整個系統(tǒng)的性能和功能。其產(chǎn)品具有高實時性、高可靠性和高安全性的要求。但由于國內(nèi)對安全氣囊的研究和發(fā)展較晚，自主品牌的安全氣囊控制單元的研究和生產(chǎn)相對于國外的汽車零部件生產(chǎn)企業(yè)還比較落后，產(chǎn)品的功能也比較單一。隨著中國汽車工業(yè)的發(fā)展和市場需求的提高，人們對于安全氣囊和安全氣囊控制單元也提出了更高的要求，這對于國內(nèi)自主品牌的安全氣囊控制單元的研究提供了機遇和挑戰(zhàn)。設(shè)計一個功能性、擴展性好、接口全的安全氣囊控制單元對于企業(yè)的發(fā)展有著重要的作用。
論文首先介紹了安全氣囊系統(tǒng)的組成和國內(nèi)外的發(fā)展現(xiàn)狀，并對國內(nèi)外的安全氣囊控制單元的主要技術(shù)進行分析和探討。并從目前中國汽車安全氣囊系統(tǒng)的需求出發(fā)，根據(jù)現(xiàn)在的技術(shù)和工藝的現(xiàn)狀，進行了安全氣囊控制單元的系統(tǒng)架構(gòu)設(shè)計、功能設(shè)計，并確定了系統(tǒng)軟件流程。論文通過對安全氣囊控制單元的硬件系統(tǒng)需求進行了硬件實現(xiàn)方案的設(shè)計，并通過微控制單元選型、傳感器電路、點火驅(qū)動電路、和外圍傳感器等子模塊的硬件設(shè)計，最終完成安全氣囊控制單元硬件系統(tǒng)的設(shè)計。論文還對安全氣囊控制系統(tǒng)上的加速度傳感器進行介紹。并論文詳細闡述了安全氣囊控制器單元的設(shè)計和實現(xiàn)過程，并通過使用微控制器、雙傳感器冗余技術(shù)和外圍傳感器等技術(shù)，增加了安全氣囊控制單元的系統(tǒng)可靠性，最終實現(xiàn)了滿足系統(tǒng)需要的產(chǎn)品。

關(guān)鍵詞 安全氣囊控制單元 加速度傳感器 AD轉(zhuǎn)換器 點火驅(qū)動芯


THE DESIGN OF AIRBAG CONTROL SYSTEM OF THE SUV
Abstract As the main module of the vehicle passive safety system, it is efficient to protect the driver and passenger when the airbag module is matched together with the seat belt, and more and more automobile manufacturers and users pay the great attention to that. After the development and promotion in these years, the airbag modules are already universal application in the Sedan and SUV etc, successfully save many lives during the traffic accidents, the airbag module is accepted and agreed by more and more people. ACU (Airbag Control Unit) is the core module of the airbag safety system, the works of the airbag safety system are controlled by ACU, and the performance and function of the system is determined by ACU. ACU has high Real-time, high reliability and high security. In China, People study and develop the ACU Module is later than foreign, compared to the foreign ACU company, the study and development of our self-owned brand ACU is fallen behind, and the function of ACU is single. Along with the development of the vehicle industry and the expanded of the market requirement, people have the higher requirement of the airbag modules and the airbag control unit. It is the opportunity and the challenge to the self-owned brand ACU. It is very important of the internal company to make the ACU with good function, good expanded part and all-sided interface.
The paper explains the composition of the airbag system and development status in China and foreign firstly, make the analysis and discussion of the core technology for the airbag control unit. And point of view the requirement of airbag safety system in China, make the system structure design, function design of the airbag control unit according to the current technology status. The paper also show how to make the design of the hardware implementation from the hardware requirement of the airbag control unit, and complete finally design of the hardware system by the hardware design of sub-modules: the type selection of the Micro Control Unit, sensor circuit on the board, fire driver circuit of the airbag module and peripherally sensors. And eventually we completed the airbag control unit and peripheral sensor design work. Some introduction of the sensor has been included in the paper. During the design process, I have modified the circuit diagram.
The paper expound the design and the implemention process of the ACU, the system reliability of the ACU is increased by the single chip, the redundancy technology of the paired ACU, and the peripherally sensors etc, ACU with the functions can meet the system requirement.
Key words Airbag control unit acceleration sensor AD convertor Four Channel Squib Driver IC


目錄
摘要····················································1
ABSTRACT················································2
第一章 緒論
1.1安全氣囊簡介······················································6
1.2安全氣囊系統(tǒng)的組成················································8
1.3安全氣囊控制單..