船舶电气英语求助1 The working principle and hardware block diagram The system mainly consists of the single chip computer,the keyboard,the monitor,sensors,the signal-transform circuit,the signal-processing circuit,the alarm circuit and the pr

船舶电气英语求助1 The working principle and hardware block diagram The system mainly consists of the single chip computer,the keyboard,the monitor,sensors,the signal-transform circuit,the signal-processing circuit,the alarm circuit and the pr
船舶电气英语求助
1 The working principle and hardware block diagram
The system mainly consists of the single chip computer,the keyboard,the monitor,sensors,the signal-transform circuit,the signal-processing circuit,the alarm circuit and the printer .Fig .1 is the hardware block diagram.
According to Fig .1,the single chip computer INTEL 87C51 is the nucleus of the whole system which monitors the states of all switching sensors and the signals coming from analog sensors and digital sensors
There are 96-way signals coming from switching sensors that are formerly switching-on.The signals are connected to a port of the single chip computer INTEL87C51 by multi-channel switches and the optical isolator .The multi-channel switches are made up of six 16-channel analog switches CD4067.The number of port allotted by the system is 80H-0DFH.It is different from general port address that comes from the address bus because it comes from the signals on the data bus locked by 74HC373.After decoded by decoder 74HC138,the four high-bits of the signal locked provide the six analog switches with enabling signals,while the highest bit is valid when high voltage is the decoder’s enabling signal that decides if the decoder will work.The output signals of six multi-channel switches are connected with the single chip computer through the optical isolator .

船舶电气英语求助1 The working principle and hardware block diagram The system mainly consists of the single chip computer,the keyboard,the monitor,sensors,the signal-transform circuit,the signal-processing circuit,the alarm circuit and the pr
1.工作原理及硬件结构图
系统主要包括单片机（我想他是这个意思）,键盘,显示器,传感器,信号转变电路,信号处理电路,报警电路以及打印机.示意图1即为硬件结构图.
从示意图1可以看出,单片机INTEL87C51是整个系统的核心,它被用来监测所有开关传感器的状态,以及来自模拟传感器和数字传感器的信号.
开关传感器构成了96路信号,这些传感器预设为开启状态.这些信号通过多通道转换器及光耦与单片机INTEL87C51的端口连接.这个多通道转换器是由6个16通道模拟转换器CD4057组成.系统设定的端口地址为80H-0DFH.它与来自地址总线的一般端口地址不同,因为它是由74HC373所锁存的数据总线上的信号决定的.在解码器74HC138解码后,当最高位有效且当高电平为解码器工作与否的决定信号时,被锁存信号的4个高位及授权信号传送给6个模拟开关.6个多通道开关的输出信号通过光耦与单片机相连.
enabling signal或翻译为动作信号；
multi-channel switch这个也不太确定到底是多通道转换器还是多通道开关,你自己定吧.你凑合着看吧,不过也便宜你了,才给了我那么点分.要是有哪段没给你翻译,你把网址发给我.