Research Of Tyre Burst Early-warning System Data Transmission And Gate Limit Algorithmic For Vehicles

1.IntroductionAt the beginning of new century, due to the problem of fire-tone quality, vast tire brust and to turn over accident work exceed one hundred of people death and four hundred of people bruise, which bring attention of auto industry and USA .A great deal data indicate, if right puff to tyre which will greatly reduce feasibility burst tyre. For solve this problem, tpms study begin get regard. Tpms mostly real time automatism measure to tyre pressure when auto run, and go along give an alarm when tyre leak and low air pressure, which ensure traveling crane security. At present best of all popular psbtpms which make use of pressure sensor build in every tyre straight measure tyre pressure, and go along show and surveillance to every tire pressure. When tyre pressure over low or leakage, tpms will automatism give an alarm.2.Several advisement of system design(1)Due to tpms emission module work under condition ,acuity oscillation, circumstance difference in temperature big change and inconvenience right now examine and repair, so all parts of an apparatus have dependability and stability, which can adapt -40～+125℃. For the sake of reduce tpms send module bulk, save work cost and buildup function, tpms need choose be provided with manifold function minitype and dispatch cmos chip.(2)Along with energy sources issue more and more be much accounted ,system save energy become the design take into account emphases problem.for advance tpms emission module working hours in a battery,ought to let system enter sleeping state in mass time.Arouse tpms system of send part, adopt in this way : add acceleration sensor in the sensor module,make use of motorial sensitivity,come true auto selfmotion boot strap enter system check when auto startup ;move speed automatism aptitude confirm check time cyc when Auto high speed run ,using software enactment saft period,sensitivity period and crises, for gradually cut circuit check cyc and advance earing alarm ability.3. Main research work in this paperText develop Tire Burst Early-warning System for Vehicles use mc68hc908 series controller and wireless frequency receive chip,according to fact accomplished system function,do build in auto tyre inner of tyre module and install cab of mainframe module. As to system manifold collection temperature and press data need get across a sort of wireless form go along send and incept,and that the receive circuit will seting in tyre,which must require chip of circuit can bear high temperature.using Motorola company develop beam chip mc33493 and incept chip mc33594.two chip can achieve auto temperature (emission chip is 125℃,incept chip is 105℃)completeness work out endure high temperature problem, and work capability uo to the hammer .Text go on with research which tyre press,tyre temperature,vehicle load,run speed,traffic situation,circumstance temperature,continuum run time and so and effect on synthesis of burst tyre, confirm alarm limit and decision making arithmetic about burst tyre of pressand temperature. Main research work can be divided into the following several parts:(1)under circumstance of strive electromagnetism data transmission and communication protocol come trueTada wireless transmission dependability directness connection if driver can receive essential information from real time supervise tyre postural tyre module .wireless data traffic has strict request on the side of low cost electricity and electromagnetism .Text design Tireburst earlwarning system for vehicles research fsk concoct manchester coding of wireless communication ,according to transmission baud rate optimize and communication protocol come true,restrain engine and wheel cycle come out strive electromagnetism disturb availability, simultaneity insure transmission distance ,advance dependability of data transmission.(2)Establish Tire Burst Early-warning System for Vehicles limit gate and achieve decision_making arithmetic Upbuild science exact tyre press and temperature tyre burst early_warning limit gate and decision_making arithmetic ,connection system early_warning of science,veracity and reliability . early_warning limit gate and decision_making arithmetic vice cannot but bring the problem of upper fault empty alarm and fail to report ,which need be faced with a sixty_four_question in design system.in the abstract ,for differ temperature and press give birth to burst tyre causal of mechanism lack maturity ,simultaneity ,due to they restrict one another relation incertitude ,so adopt press fastness qua tire burst early-warning system for vehicles limit gate have localization .so,txet go along test under circumstance differ road,differ run speed,differ temperature road surface and differ load ,Study base on conjoint arithmetic descendiblity and nn non linearity flexible vehicles limit gate decision_making arithmetic and establish limit gate , which will advance science and veracity of tire burst early-warning system for vehicles4. conclusionPress and temperature of tyre real time inspect and give an alarm will decome prepare function of auto safety system . tire burst early-warning system can avoid burst tyre ,avoid nonormal abrasion because of run lack gas , avoid cost increase . Text develop tire burst early-warning system can inspect tyre leak gas , lack press or high press,overtake tyre temperature under state run ,and give an alarm . the system work long life ,it can adapt work condition wicked .a certain extent, it can prevent happen from burst tyre , consequently improve security of auto high speed run ,have fact apply value very much .