汽車是當今最普遍的交通工具，隨著汽車工業的進步以及車輛數目的提升，如何加強車輛的安全性是個非常重要的議題。對於車輛的安全性，除了考量汽車本身的結構安全外，提供駕駛可靠的輔助機制亦是非常重要的部分。每年有數百萬人因車禍受傷或死亡，顯見車輛安全的問題不容小覷。各國對於這樣的問題都積極的再尋找方案，力圖能夠增加車輛的安全性，例如：在美國便規定所有小於 10000 磅以下車輛，都必須要安裝有倒車影像系統。由此可知，倒車影像是個值得重視的議題。
With the development of network and related technology has become more mature, now we can see the network applications in everywhere of the community, such as ATMs, mobile phones, home appliances and so on. With the increase of network applications as well as technology becomes more mature, we can foresee the future of the Internet is limitless. Network can be divided into wired network and wireless network, wireless network compared to a wired network has many advantages, such as easy to install, cover a wide range, amplified easy and so on. Wireless network thus ideal for use in difficult line installation place, such as vehicle, transportation node, institution and so on.
Car is the most common means of transport, along with the progress of the automotive industry as well as increase of number of vehicles, how to enhance the safety of the vehicle is a very serious issue. Regarding to the safety of vehicle, in addition to considering the structural safety of the car, provide reliable auxiliary mechanism to driver is also a very important part. Millions of people injured or killed in a car accident, it is obvious that the issue of vehicle safety can not to be sniffed at.
Because of the issue, the world-side countries are actively looking for solution to enhance the safety of vehicle. For example, the U.S. Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) issued a final rule requiring all vehicles under 10,000 pounds, including buses and trucks, manufactured on or after May 1, 2018, to come equipped with rear visibility technology. Therefore, the rear visibility technology is a topic worthy of attention.
In this paper, in order to decrease the technical threshold of establish the rear visibility system and avoid the hard installation to cause that can’t obtain the safety of vehicle. Therefore, we established a rear visibility system based on wireless transmission. By means of wireless transmission to increase the convenient of wiring and proposed a related power save mechanism to enhance the life time of wireless device in limited power. In addition, in order to avoid the system real time reaction capability decrease with power save mechanism, we proposed another auxiliary mechanism to reduce the effect that cause by power save mechanism. In addition, in order to avoid immediate saving mechanism to reduce system reaction capability, and the other proposed mechanisms to reduce the impact of an auxiliary power mechanism of response capabilities. The results show through simulations, through the mechanism proposed in this paper, the use of different scenario can effectively increase the life time of power and maintain a considerable degree of responsiveness.