Abstract
The auto safety aerocyst took one kind of auxiliary crew memberrestrains the condition，Has the collision when the automobile protects crew member'seffectiveness more and more to obtain the affirmation，Now the society also more and more is high to the security aerocystrequest。Also more and more is in particular widespread to the intelligentsecurity aerocyst demand，When the automobile has the collision the automobile and theautomobile or between the automobile obstacle collision is called thefirst collision，The first collision has caused the automobile speed rapid change。As a result of inertia function，On vehicle crew member to front movement，Thereupon has had in the vehicle in the crew member and the vehiclebetween the structural element second collision，In the accident creates the main reason which the crew member injures is the second collision。In order to reduce and avoids harnessing while the personnel receivesthe injury in the second collision，The crew protective system design goal is avoids or slows down the injury in the collision using the restraint system which in the crewmember and the vehicle the structural element collision creates。The auto safety aerocyst basic thought is：After has the first collision，Before second collision，Rapidly inserts in the crew member and between the automobile interior component to fill the gas the aerocyst，Let the crew member "throw oneself" on the aerocyst, absorbs crewmember's kinetic energy through the aerocyst on exhaust throttleresistance, enables the violent second collision to slow down,achieved protects crew member's goal. Therefore the security aerocyst
took one kind of protective measure already was essential. I havemainly carried on the security aerocyst design work in this design,conducts the research to the security aerocyst work process, forcauses the crew member safety to design an appropriate securityaerocyst。
The introduction independently develops the intelligent type autosafety air pocket control system, this system mainly by the monolithicintegrated circuit, the sensor, the electric firing circuit and so onis composed, the use ignition control algorithm carries on thejudgement to the automobile acceleration signal, the output ignitionpulse. This system has the volume slightly, the reliability high, theantijamming ability is strong, may carry on from characteristic and so
on diagnosis。
Therefore designs the main work is to in aerocyst electric circuitCPU, the acceleration instrument choice, the relay choice and the andcircuit related component, like for prevents the wrong ignition but tohave to design a electric firing circuit, for prevented the meaconingwe must add the light isolation and so on some measures. Therefore Idesign the main work which does am to the security aerocyst hardwareelectric circuit implementation operation and to its principle of workcarry on the analysis, conducts the research to its application.
