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Description: ADC0802-3-4 ADC0802-3-4 ADC0802-3-4-ADC0802-3-4
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Size: 261120 |
Author: fke |
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Description: lm35是测温传感器，每升1度，对应的电压就升10mV（这是该器件的特性）
该函数要求 每升0.5度，电压升5mV，并把温度显示在lcd1602上
即A/D转换的分辨率b为0.005v ，也就是温度传感器每0.5度，ADC0804就转换一次（电压-->温度）再去显示温度
这里还得到ds1802检测到的温度与lm35所得的电压进行比较，（在相同的环境温度应是相等）
分辨率b=5mV=VREF/256 所以VREF=1.28V
又因为ADC0802的9号引脚里有一个放大器（可放大为原来的2倍）
所以输入9号引脚的电压Vx=VREF/2=1.28/2=0.64V（可由电位器来控制）-lm35 is a temperature sensor, 1 degree per liter, corresponding to the voltage on the rise 10mV (which is the device' s characteristics) per liter, 0.5 degrees of the function required, the voltage rise 5mV, and the temperature is displayed in the lcd1602 on the A/D conversion resolution of b to 0.005v, which is the temperature sensor every 0.5 degrees, ADC0804 to convert a (voltage-> temperature) go here also show that the temperature detected by ds1802 lm35 temperature and voltage from comparing (in the same ambient temperature should be equal) resolution b = 5mV = VREF/256 so VREF = 1.28V and also because the 9-pin ADC0802 There is an amplifier (to enlarge the original 2-fold) so the input voltage Vx 9 pin = VREF/2 = 1.28/2 = 0.64V (by potentiometer to control)
Platform: |
Size: 26624 |
Author: zjj |
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Description: 家用型UPS智能控制系统
本程序应用于UPS电源控制系统，市电正常时，系统对UPS电源进行电量检测及充电控制，市电掉电时由UPS电源对外
供电（可设定有效时间段），系统可以设置掉电延时时间、市电恢复送电延时时间、充电频率、UPS输出方式（晶体
管或继电器）、系统时间、LCM背光延时时间、LCM对比度、菜单自动退出延时时间等；系统还可以查询UPS总输出时
间、最近五次UPS输出时刻；
人机界面采用LCM显示模块输出，输入部分使用四个按钮；UPS电源电量检测采用ADC0802八位A/D转换器；
人机界面共有十个显示界面，主界面显示当前时间（时：分）、当前整机状态、UPS电池电压、电量等级等；-Home UPS intelligent control system of the program is applied to the UPS power control system, the mains is normal, the UPS power supply battery detection and charging control, effective time period can be set by the UPS power supply external power supply (mains failure) charging frequency, the UPS Output (transistor or relay), system time, the delay time of the LCM backlight LCM contrast, the menu automatically exit delay, the system can be set to power-down delay time, the utility power is restored power transmission delay time, time system can also query the UPS output time of the last five UPS output moment human-machine interface LCM display module output, input section with four buttons UPS power supply battery detection ADC0802 8-bit A/D converter person There are ten machine interface display interface, the main interface displays the current time (hours: minutes), the current machine status, UPS battery voltage, power levels
Platform: |
Size: 239616 |
Author: 黄力 |
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Description: 51单片机扩展ADC0802例程。学习模数转换的好例子。非常不错。喜欢学习单片机的必修课。-51 single extended ADC0802 routine. Learning a good example of analog to digital conversion. Very good. Like learning microcontroller course.
Platform: |
Size: 20480 |
Author: 王昊 |
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