音乐盒发生原理.doc

主要部分由滚筒和簧片两部分组成。 原理是发条带动表面有小凸起的滚筒转动，当凸起经过簧片时会拨动簧片（先将其慢慢抬起，然后突然放下）使簧片震动发出声音。八音盒的簧片使发音部分是在一块大的钢板上切割为长短不一的细条做成的。滚筒相当于是乐谱。 基本等同音乐盒，一个圆轴上焊上有规律的凸点，附近有一个金属片，圆轴转动，凸点从金属片边缘扫过，由于凸点的不同，使发音不同，再加上固定的转速，一周转下来，会作出一支固定的乐曲。音乐盒的制作对过去而言,可能一般人不太可能做出来,因为那是一种机械,要求对发音材料几何尺寸十分准确,否则就不可能发出美丽的旋律.还要有储能部分,将能量储存起来,然后慢慢释放,从而带动机器敲击发音材料.根据事先设置的音乐(就是不同尺寸的发音材料,按一定顺序发音),来奏响.储能装置最常用的有类似于钟表发条式的,旋紧发条时就储存了能量,释放时就能带动机器发出声响. 现代音乐盒都是电子式的,比起老式音乐盒音质要优美多了,除了能奏和旋外,还能真人真唱,容量也大多了.其结构为:一个集成块其功能为储存音乐文件和放大电路,外接小扬声器和电源就能接成完整的音乐盒电路了.一般集成块内存储多首歌曲.如果是购买成套元件,照图连接起来不用测试就能正常工作了.具体接线点只有两组,每组只有两个接头.对于电源(电池)这组要注意电源正负极不能接反了,小扬声器这组就可以随意正反接. 总之,做电子式的音乐盒是很容易制作的,并且能达到很理想的效果.The main part is composed of two parts of drum and reed.The principle is a spring surface has a small convex roller to rotate, when raised after reed will toggle reed ( their first slowly, then suddenly down ) the reed vibration sound. Music box spring makes pronunciation part is in a large steel plate cutting for varying lengths of the strips. The drum is equivalent to music. Substantially equivalent music box, a circular shaft is welded on a regular convex point, near a metal sheet, circular shaft to rotate, bump from sheet metal edge sweep, because the convex point is different, make different sounds, plus a fixed speed, a swing down, will make a fixed the music. Music box production in the past, may be in general were less likely to do it, because it is a kind of mechanical, requirements on pronunciation material geometry is very accurate, otherwise it is impossible to make a beautiful melody. But also the energy storage part, the energy is stored up, then slowly release, so as to drive the machine on pronunciation material. According to a set of music (that is, different sizes of pronunciation material, according to a certain order of pronunciation ), to play. The energy storage device most commonly used are similar to the clock clockwork, clockwork when the stored energy is released when the machine, can be driven sound. Modern music boxes are electronic, compared to the old music box sound much much more beautiful, in addition to playing and supination, and jingle, capacity is mostly. The structure is that: an integrated block and its function to store music files and amplifying circuit, an external small speaker and power supply can then complete music box circuit. The general integrated block memory song the song. If it is to purchase complete sets of components, according to pictures without test can work normally. The detailed connection point only two groups, each group has two connectors for power supply ( battery ). This group should pay attention to the power positive and negative electrodes cannot be reversed, A small loudspeaker this group can be positive and negative connection. In short, do electronic music box is easy to manufacture, and can achieve ideal effect.工业字符型液晶，能够同时显示16x02即32个字符。（16列2行） 注：为了表示的方便 ，后文皆以1表示高电平，0表示低电平。 1602液晶也叫1602字符型液晶它是一种专门用来显示字母、数字、符号等的点阵型液晶模块它有若干个5X7或者5X11等点阵字符位组成，每个点阵字符位都可以显示一个字符。每位之间有一个点距的间隔每行之间也有也有间隔起到了字符间距和行间距的作用，正因为如此所以他不能显示图形 （用自定义CGRAM，显示效果也不好） n1602LCD是指显示的内容为16X2,即可以显示两行，每行16个字符液晶模块（显示字符和数字）。 n目前市面上字符液晶绝大多数是基于HD44780液晶芯片的，控制原理是完全相同的，因此基于HD44780写的控制程序可以很方便地应用于市面上大部分的字符型液晶。Industrial character LCD, can display 16x02 32 characters. ( 16 rows of 2 ) Note: in order to express the convenience, the 1 that are high, 0 low level. The 1602 liquid crystal is also called the 1602 character LCD it is a specifically designed to display letters, numbers, symbols and other LCD module which is provided with a plurality of 5X7 or 5X11 dot matrix character bits, each character position can display a character. Each have a pitch intervals between each row has also has spaced played a character spacing and line spacing effect, so he cant display graphics ( with custom CGRAM, show the effect is not good ) n1602LCD refers to display content for the 16X2, which can display two lines, each line of 16 characters LCD module ( displaying characters and numbers). N currently available on the character LCD most is based on the HD44780 liquid crystal chip, control principle is identical, therefore based on the HD44780 write control program can be conveniently applied to the market the majority of the character lcd.在电子产品设计中，人机交互显示界面是必不可少的工作，目前一般使用的液晶显示器均为七段笔划式，只能显示数字和少量字符，功能往往受到局限，对于较复杂的字符或图形则无能为力。而LCD智能型显示模块则是一种低功耗、低损耗、低价值的显示器件，它不但可以显示各式各样的字符、汉字和图形，同时具有可编程能力，且与单片机接口方便，基于以上优点，LCD智能显示模块获得了广泛的应用。In the electronic product design, human-computer interaction interface is essential to work, the common use of LCD are seven stroke type, can display numbers and a small amount of character, function is often limited, for more complex characters or graphics are incapable of action. While the LCD intelligent display module is a low power, low loss, low values of the display device, it can not only display the every kind of characters, Chinese characters and graphics, while having a programmable capability, and convenient interface with MCU, based on the above advantages, LCD intelligent display module obtains the widespread application.汉字一般是以点阵式存储的，如1616，2424点阵，汉字的字模其实是汉字字形的图形化，所谓16点阵字模，就是把汉字写在一个1616的网格内，汉字的笔划通过某网格时该网格就对应1，否则该网络对应0，这样，每一网络均对应1或0，把对应1的网格连起来看，就是这个汉字，汉字就是这样通过字节表示其点阵存储在字符字库中的，为了方便查找所需汉字的点阵，每个汉字都与一个双字节的内码一一对应，通过汉字的内码可以计算出它的点阵起始字节。现以16点阵为例来进行说明，首先，可由内码计算出他在汉字库中的区位码，其计算公式为：BQ=Bn1-160 Bw=Bn2-160式中，BQ表示区码，Bw为表示位码，而Bn1和Bn2则分别表示内码的第一字节和内码的第二字节。当这些区位码被计算出来之后，就可以用区位码得到它在汉字库中字模第一个字节的位置，即：（BQ94+Bw）32这样，接下来就可以向连续读出由32个字节组成的该字的点阵数据。Chinese characters are generally based on matrix storage, such as a 16 x 16, 24 x 24 dot matrix Chinese characters, Chinese characters font is graphical, the so-called 16 dot matrix font, is the Chinese characters written in a 16 x 16 grid, Chinese characters stroke through a grid of the grid is corresponding to 1, otherwise the network corresponding to the 0, in this way, each network corresponds to 1 or 0 to 1, corresponding to the grid connected together, is the Chinese characters, Chinese characters is the bytes stored in the dot matrix characters in a font, in order to facilitate the search for Chinese characters dot matrix Chinese characters, each with a double byte code one one corresponds to Chinese characters, through the code can be calculated f