Airbag works A typical air bag system consists of two components: collision detection ignition device (or sensor)， air bag gas generator (or air bag) When the sensor activated switch， the control circuit is in working condition began and by the detection circuit to determine whether he has the collision If the signals from two sensors simultaneously， then the role will be to start the Generator and battery as the car in front is usually easy to damage the site， therefore， airbag control system are equipped with their own power to ensure that the role In determining the conditions of cast right after the airbag， the control circuit current will be sent to ignition， by rapid transient heating， the propellant containing sodium nitride In the near-explosive chemical reaction occurs rapidly at the same time， will produce much sound to nitrogen-based gas， the balloon inflated to the full state， and by a strong impact， air bags can be washed on the steering wheel cover and open fully expanded to protect the drivers head from At the same time in the process of burning propellant， ignition assy in cooled metal mesh cover can be rapid expansion of the gas， then a small balloon may be well designed exhaust vents to play gradually buffering function and to avoid the body continues hinder the move of sight after the Need of special note is the only sensor to meet certain conditions it will Airbag sensor there are many， in part， or leveraged by pendulum switch， there is the spring loaded wheel-style， in addition to products with mercury But whatever type of sensor switch， must have sufficient impact force to make switch start， while the impact force must come from the positive direction C Usually the impact force is about equal to the speed of 25-50 km around the results generated by the collision When the car by this high-speed collision， installed in the vehicle front collision sensors and the central fitted in the car safety sensors can detect the sudden deceleration speed， and this signal is passed to the airbag system， the rapid control of the computer， the computer through the analysis confirmed only after we set off airbags electric hot bag of firearms， so that a rapid expansion of air It has been calculated to be formal airbags a car crash in 01 seconds after the start of work within the microprocessor， 03 seconds， ignition start， 05 seconds， high pressure gas into air bags， 08 seconds out balloon inflated balloon within 11 seconds completely swollen， at the moment， the drivers will hit the air Visible， open or not with the impact airbag angle and impact velocity have the general turn in the car， minor collisions， side impact or rear collision， the airbags will not open， such as upgraded version of the Santana 2000 car around the front less than 30 degrees are only open when the airbag Another point， in terms of impact velocity Duiyu， airbag system in the determination of the reduction of striking speed of the vehicle is， therefore， in security， collision experiment， generally are not so Che straight Di Yi Dong and can not hit the Qiangshang Bianxing
The society entered the information network time， the people no longer satisfy to the automobile request one kind of riding instead of walking tool， hoped the automobile is the life and the operating region one kind extends， on automobile on elephant in own office and family same work and At the same time， the automobile computerization also day by day rapidly develops， was considered is in an automobile technological development advancement revolution， the automobile computerization degree is weighs by regarding as the modern automobile level the important But along with the computer technology， the communication technology， the integrated circuit technology rapid development， take the numeral field bus as representative's scene measuring appliance， the equipment massive applications， a tedious scene segment bed sheet succinct field bus network replaces， the signaling quality also greatly enhances， the automobile also starts to march into the network In the near ten years， the user regarding automobile comfortableness， the security as well as the environmental protection and so on each performance request enhances In order to meet the need which these increase day by day， on the automobile the computer controls the electronic electric appliance equipment sharp growth， causes the automobile (is specially passenger vehicle) designs the electric appliance line arrangement to be more and more In addition， because because on the automobile each kind of electronic electric appliance meets the point insertion quantity along with it sharp increase， in the automobile travel process meets the point insertion the breakdown to create on the automobile the electronic electric appliance equipment malfunction question to be more and more In order to solve the above problem， very many new vehicle types (are specially upscale vehicle type) in the development starts widely to apply the computer network This article introduced the computer network technology in the automobile the application basic principle， elaborated the networking in the automobile interior and exterior application situation， introduced the automobile interior network characteristic and the automobile interior network standard， with emphasis narrated the control confined network CAN principal characteristic and the According to the automobile driving quality function influence division， may the automobile electronic products induction be two kinds: One kind is the automobile electronic control， including engine， chassis， automobile body electronic One kind is the vehicle carries the automobile electronic installation， including the automobile information system， the guidance system， the automobile sound and the television entertainment system， the vehicle carries the communications system， the surfer equipment and so Keywords: automotive， computer networks， local area network control， network standards
Society into the information network era， the requirements of the vehicle no longer be satisfied with a means of transport， but also want to live and work car is an extension of the scope， in the car like in their own office and home work and At the same time， the growing automotive electronics and also the rapid development of automotive technology was considered in the development process of a revolution of automotive electronics is a measure of the degree is seen as an important level of Hyundai Motor With computer technology， communication technology， the rapid development of integrated circuit technology in order to figure represented Fieldbus field instrument， equipment， a large number of applications， red tape has been the scene of a single simple connection of fieldbus networks in place of， the quality of signal transmission also greatly improved， cars have begun to enter the Internet A In the last decade， the users of motor vehicles for the comfort， safety and environmental requirements such as performance In order to meet these ever-increasing demand for computer-controlled vehicle electrical and electronic equipment increased dramatically， making vehicles (especially cars) the design of the layout of electrical circuits has become increasingly In addition， a variety of automotive electrical and electronic connector of the ensuing surge in the number of motor vehicles traveling on the course because of the failure point connector automotive electrical and electronic equipment on the issue of failure to perform its functions more and more To address these problems， many new models (especially the high-end models) the beginning of the development of the wider use of computer network In this paper， computer network technology in the automotive application of the basic principles of network technology on the inside and outside the vehicle， the introduction of the internal network， introduced the characteristics of automotive and automotive standards for the internal network， focuses on the control of the main local area network CAN characteristics and their Vehicle performance in accordance with the role of the impact of division of motor vehicle electronic products can be summarized as two types: one is the automotive electronic control devices， including the engine， chassis and body electronic One is car-car electronic devices， including motor vehicle information systems， navigation systems， car audio and video entertainment systems， automotive communications systems， Internet
多了打不下，自己扩充一下。Isn't it great when a plan comes together? A few months ago Beijing was fretting about an apparent collapse in demand for Muted sales data – sales of passenger cars fell 35 per cent between March and August – suggested that China would be lucky to get anywhere near its target of shifting 10m vehicles in Some pretty blunt instruments later – tax cuts and subsidies for smaller vehicles – and autos are flying off the With 7m new vehicles shifted in the first quarter (up 4 per cent year on year)， China has zoomed past the US (2m， down 38 per cent) as the world's largest At that run rate， Beijing will beat its 2009 target by early D No wonder this week's Shanghai auto show is more festive than equivalent events in the west， which are being scaled back or canned But delegates should keep some champagne on Automakers are not necessarily looking at better profits: minivans mean mini- Sales of vehicles with bigger engines are falling， as they are everywhere This year's overall improvement in sales is almost certainly linked to rampant credit growth， which the banking regulator last week said it was looking to And the industry continues to grapple with structural demand Take cars: sales growth averaged about 40 per cent a year in the six years to 2008， when annual growth slipped to 7 per Even with the punchy start， 2009 is set for about 5 per cent， estimates C For a country with third-world penetration – 32 cars per 1，000 people in 2007 (compared with 800 in the US) – that kind of growth is hardly Chinese savings rates are among the highest in the world， implying huge potential for But as Morgan Stanley points out， given off-book liabilities such as retirement， healthcare and education， the average consumer is practically in negative In spite of Beijing's inducements， households may continue to prioritise these invisible debts over a new set of 一项计划的出台不是很棒吗？几个月前，中国政府为汽车需求锐减而烦恼不已。从去年3月至8月，乘用车销量减少了35%。疲软的销售数据表明，中国要是能接近实现2009年销售汽车1000万辆的目标就算走运了。采取了一些相当直接的措施（对小排量汽车下调购置税并提供补贴）后，汽车销量急速上升。今年第一季度中国新车销量达270万辆，同比增加4%，超越美国（220万辆，同比减少38%）成为世界第一大汽车销售市场。以这种增长速度，中国政府在12月初就能完成2009年的目标。难怪与西方规模缩减或压缩在一起举行的同类展会相比，本周的上海车展更具节日的欢乐气氛。但参展代表们先别忙开香槟庆祝。汽车制造商不一定能实现更多利润：微型车意味着微利。和世界其它地区一样，大排量汽车的销量正在减少。今年销量的总体改善几乎必定与信贷的高速增长有关——中国银行业监管部门上周已表示将注意控制。而汽车制造业还要继续努力解决结构性需求问题。以轿车为例：截至2008年的6年里，轿车销量以每年40%的平均速度增长，但2008年放缓至7%。虽然开局有力，但据花旗(Citi)估计，2009年汽车销量增幅可能在5%左右。对于一个汽车普及率仅为第三世界水平的国家——2007年，每千人拥有32辆汽车，而美国每千人拥有800辆——这种增长根本算不上惊人。中国的储蓄率位居世界前列，意味着巨大的消费潜能。但正如摩根士丹利(Morgan Stanley)指出的那样，如果考虑到退休、医疗和教育等账外债务，中国普通消费者实际上是负资产。因此，尽管中国政府采取了一系列刺激措施，但与购置新车相比，老百姓可能还是会优先考虑那些无形的债务负担。
大哥，救我
