【正文】 圖 1 硬件結(jié)構(gòu)圖 Electronic controlling machine adopts the 8031 single chip machine and the corresponding digital circuit, by it, gather the signal of each sensor , decide and control the synthetic output of speech sound as a result according to handling and calculation. Because of the 8031 single chip machine without ＲＯＭ , expand a slice of ＥＰＲＯＭ 2764 is as the program memory. The system of speech sound with Japanese Dong Zhi pany39。 ｇ . Braking ineffectiveness is danger。 ｅ . care left rear obstacle。 ｃ . the oil quantity of machine oil is below。s cab error higher and so on, starting system send the hint of speech sound. In the system of speech sound adopting the Ｔ 6668 chip record systems of speech synthesis and the regenerative signal of speech sound. According to needs ,in the control of ＣＰＵ , ask to be able to export the following hint speech sounds: ａ . noticing door do not close。 ｇ . Detecting the condition of road surface。 ｅ . when automobile backs a car , detecting the barrier condition after the automobile。 ｃ . detecting the oil quantity of engine machine。1 UNIT ONE： The automobile speech sound system of the puter control In the last few years, the highway traffic caused development of our country very rapidly, has raised the vehicle traversal speed and circulation density greatly ,especially the appearance of highway has followed to e to traffic accident ,and also occurred again and again, at the same time ,caused personal casualties and economic property loss. How to reduce traffic accident have bee urgent matters. Driver of carefullessness is the one of important reason that traffic accident occurs , therefore developing a set of simple reliable, can each partial conditions of automatic detection vehicle, discover unusual condition the safe system that can send the hint of speech sound in time to driver have great actual meaning. Driver of carefullessness is the one of important reason that traffic accident occurs , therefore develop a set of simple reliable, can each partial conditions of automatic detection vehicle, discover unusual condition the safe system that can send the hint of speech sound in time to driver have great actual meaning. design ideological basised to initiate the mon factor of accident, this set of system will realize following detection function: ａ . closing door , detecting whether the gate lock has beenn deducted。 ｂ . detecting the cooling water of engine warm up。 ｄ . detecting the braking oil quantity。 ｆ . the wear out condition of detection automobile brake friction flat。 ｈ . Detecting whether driver is excessive drinking. After automobile engine starts , system begins detecting, when discovering unusual condition, such as door do not close , the warm error of cooling water is the hint of speech sound high , oil quantity is below and backing a car ,the barrier is near next to the automobile , friction flat excessively wear and the coefficient of friction of road surface .the alcohol content in the little air of driver39。 ｂ . Noticing the temperature exceed。 ｄ . brake oil quantity is below。 2 ｆ . care right rear obstacle。 ｈ . noticing the road surface than slippery。s production Ｔ 6668 chips of speech synthesis is core, additionally adopting again a slice of ＥＰＲＯＭ 27,256 stock record the data of speech sound of good system in advance, managing the data in which is using 8031 , according to the various faults to take the adjust, make up , from the Ｔ 6668 output. In this design the Ｔ 6668 adopts the Ｃ ＰＵ operating pattern and the 8031 connections ,which instruction is written in by the Ｔ 6668 ＣＰＵ interface. The Ｔ 6668 ＣＡＳ 1 end and data input end 、ＤＩ end difference and 74 ＬＳ 165 ( 8 and/string shift register ) ＣＫ end 、ＱＨ end are linked , so ＣＰＵ with only ＥＰＲＯＭ of the data of 27,2