【正文】 s Day. More and more young Chinese people begin to celebrate this day in a very similar way as that in western countries. Fewer people than ever will gaze at the heavens on Saturday to pick out the two stars shining bright on either side of the Milky Way, that is, if people even know on which day Qixi falls. There are ready reminders dotted about, in the form of big ads saying Sales on Chinese Valentine39。 Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to bee pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentine39。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulang39。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。本文作者創(chuàng)新點 ： 采用 STC公司帶有 8路 A/D 采樣的單片機 89LE516AD， 簡化硬件電路 ， 使軟件編程更簡單 ，采用液晶與按鍵相配合的方法 ， 設置電壓、電流和漏電的額定值 , 用液晶顯示采樣數據 , 使顯示更直觀 , 采用語音報警 , 使監(jiān)控人員得到更確定的報警信息 。 基于單片機的漏電保護器的研究 21 6 結論和展望 經過實際工作的測試 , 本文中的 漏電保護器的設計 ,達到預期的目的 , 完成了欠壓、過壓、過流及漏電值的設置 , 檢測欠壓、過壓、過流及漏電值情況 , 并根據設置和檢測情況使用電電路得到保護 , 防止出現 觸電及火災等情況。在液晶顯示的同時 , 設計中還采樣發(fā)光二級管對過壓、欠壓和漏電進行報警 , 軟件實現非常簡單 , 只要對相應端口置低 (共陽極 )就可以了。 (6) 液晶顯示 液晶顯示電路顯示采樣電路的電 壓、電流值 , 同時和鍵盤配合設置過壓、欠壓、 過流和漏電值?？驁D如圖 7 所示。電 路中用單片機本身自帶的 A/D 轉換器實現 ， A/D 采樣的程序可參考 STC89C51RC/RD 系列單片機應用手冊。在設定狀態(tài)下 , 其它功能不起作用。在過壓設置、欠壓設置、電流設置及漏電設置狀態(tài)中 , 按設定鍵進入數值設定狀態(tài) , 在此狀態(tài)可通過 +/控制鍵設定相應的設定值 , 按基于單片機的漏電保護器的研究 19 確定鍵 , 設定值被設置 , 并保存在 EEPROM中 , 再按退出鍵返回原狀態(tài) , 如果在數值設定狀態(tài)下 , 按 +/控制鍵設定相應的設定值后 , 按退出鍵則退還到原狀態(tài) , 設定值并不改變。狀態(tài)機的狀態(tài)圖見圖 。在對按鈕的采樣過程中 , 需要對按鍵進行去抖處理 , 在程序中采用最常用的去抖方法 , 當按鍵采樣為低時 , 延時 2 毫秒 , 再檢測按鍵 , 如基于單片機的漏電保護器的研究 18 果還是低 ， 認為是低信號 , 否則認為是抖動 , 不預考慮。位置檢測完成對 漏電保護器開關位置的檢測。在控制器的設計中 , 交流電壓的數據采集是 500ms 采一次數據 , 數據采集的定時是通過單片機的定時器 1 中斷完成。以下部分是對軟件各部分的介紹。 基于單片機的漏電保護器的研究