New tendency of technological research and development of safe protection of the car
During the most recent 10 years, U.S.A.'s traffic accident causes death the number of people maintains at the high position, the safe protective research and development of bound pair car of impelling industry of this state of affair has been shifted especially. And the initiative safety becomes the present key word gradually, it means: Heavy to prevent the accident in advance, but not merely lighten the injury afterwards.
American highway traffic safety administration bureau (NHTSA) The relevant electrons issued recently are controlled (ESC) steadily The regulation is to lead the focus of tackling key problems to the omen signal on the initiative safety. ESC is really an extremely good starting point, because it is on the basis of equipping the passive form security system, have added and controlled the arresting active measure rationally - -When the pilot out of control has no measure, ESC can adjust and control the vehicle and guarantee passenger's security voluntarily by oneself under the condition of not having pilot's intention input, so it surmount, remind to subordinate to aiding and driving the category pilot only already.
Though initiative safety engineering is capable from hands of pilot finally the take over controls some of the vehicle, but industry developer and person who controls regulation hold the prudent attitude to this, they emphasize constantly: The design purpose of this kind of system is helping motorists to discern the potential danger in time, in order to adopt the countermeasure to come to avoid colliding ahead of time.
It is the safe system integrated tactics voluntarily to put up the building blocks skillfully
Vehicle carried ESP, adaptation cruise control (ACC) The lane is deviated from and warned, and it belongs to and enters style of batch productino and begins numerous high-new safety engineering of producing actual effect of healing the wounded, rescue the dying on the highway to drive detection system of the blind area,etc.. When dangerous to approach, they will wish to call motorist's attention, thus avoid that the traffic accident of the colliding type happens.
Most of this kind of above-mentioned systems will all each act independently while beginning to load and using, all vehicle carried son intersystem data sharing intensity will reach than the level so far with much higher state. Initiative passive security system, too collaborative work, they from other relevant (not factors of safety) also Obtain useful information in the subsystem office, utilize software to information integrating and integration from different kind sensors, offer the intact scene about real-time state of circumference of vehicle to motorist. Therefore most companies appoint the specialized group to be engaged in the development of this kind of software, so that the integration between different sensory technology and data. The professional technique of the individual event is nothing but the building block at most. The innovation in the future will be the integrating effectively of a great deal of building blocks, for example: ABS braking system is a piece of ready-made building blocks which forms ESC system. It whether it is systematic on a great deal of shared information after can imagining /in coordination with every one of countermeasure: Rain the intersection of temperature and data sensory signal combine together, algorithm software decidable to snow, lead to the fact road pavement to be frozen becoming wet and slippery, CPU knows order ABS or ESC system and switches to the corresponding antiskid operation mode. Nowadays, the completed car OEMs is being set about gathering all numerous sensor data got at present in order to fully share and utilize through the on-vehicle network, in order to try to get the optimization of the overall characteristic of whole automobile. BMW Company combines the braking system with shaving river system and speed signal the linkage, because the dry braker can make the braking distance shorten, this linked system can be when it is enough fast that the wiper enter working condition and speed, the order ABS carries on periodic braking in order to do benefit to drying the wheel and brake the friction slice a bit by more oneself.
The associated IT supplier points out too, automatically controlled unit (ECU) The ability had is enough to deal with the input signal added because of sharing at present, in addition great majority of on-vehicle network had now to use the car too already can guarantee to offer in time key information. Therefore once completed car manufacturer set about, integrate every independent subsystem, what technological difficult problem does it can face at gathering new level that appear.
Classify according to BMW Company, in terms of broad sense, it is (such as automatic gearbox, air conditioner, stereo) that it is comfortable and lighten psychological or physiological fatigue functions driving that all let motorists experience Have safe efficiency voluntarily. With this foundation again a level has the motorists who surveys perception to aid and drive the system, the highest level has collision avoidance system by oneself of intelligence intervened promptly (sequencing of the following module: From aiding the driving type to intervening type) . The initiative security system in BMW Company researches and develops is formed by following numerous function module: Navigation, night viewing, all-round vision, range finding of Lay-up, the limit is aided with speed and driven, cruise control of the adaptation, adaptive control of the head-light, lane deviate from warn, return circuit ring speed control, become, aid with one, drive, speak the intersection of stability and control and lane interfere aid, drive, prevent from the intersection of pilot and doze off, emergency braking, and collision avoidance,etc. by oneself.
Prospect automotive of CMOS imaging
Though it is used that a great deal of systems such as radar, ESC, ABS had already successively entered to load, but people are still making great efforts to pursue some trucks and expedite the emergence of the leap of starting at new stage of the active safe protection system with new technology. The realization of the active safe protection function, one of the most key technology is the vision system which realizes the image forming process: Survey, treatment and discerning of the view. During the following 10- 20 years, there must be several style and take the lead in adopting CMOS (the complementary metal oxide semiconductor) The technology of making a video recording, as the organ of vision of the car. CMOS makes a video recording technology will open up the new field of a application for automobile engineering, it is expected to serve a great deal of vehicle carried systems as the multi-function device, and move towards the style of batch productino from the conceptual phase rapidly.
The important function of technology lies in that once enters many kinds of functions that can give play to active security protection automotive to make a video recording, for example: The light beam used for controlling the head-light is sent out, the perception rains, discern the traffic sign / signal of the road, foresee the lane is deviated from. Which technology of individual event is there can give play to like CMOS image sensing apparatus so far " A skill pleuripotent " Utility,may become it across main, passive two major new star of field safe. For example, it can apply to the active blind area detection system, can (at the same time) Side collide passive security systems such as the air bag,etc. offer the sensory signal to prevent from. The lens surveying system installation to the blind area can offer the useful signal for preventing the side from knocking into the air bag. People collide to lie in puzzledly effect preventing siding from in the past: There is only interval of trivial 150mm between passenger and neighbor car that is approached from the side, in such narrow damping strip, the side air bag has no enough time to respond at all; Equip CMOS, look sideways lens, it handle ability at a high speed can earn time for system CPU to ignite the air bag then. But depend on vision signal to be also enough only, prevent side from collide systematic CPU obtain message (as in coordination with one of the criteria) from the speed table meanwhile . For example: While only colliding in the speed for the low speed under 16km/h, it perhaps will be safer not to ignite the air bag. The continent company calls this kind of intersystem UNICOM as in coordination: Active integrating and sharing each other with security protection system of the passive form.
