文件名称:LM35
- 所属分类：
- 单片机(51,AVR,MSP430等)
- 资源属性：
- [C/C++] [源码]
- 上传时间：
- 2012-11-26
- 文件大小：
- 26kb
- 下载次数：
- 0次
- 提 供 者：
- z**
- 相关连接：
- 无
- 下载说明：
- 别用迅雷下载，失败请重下，重下不扣分！
介绍说明－－下载内容均来自于网络，请自行研究使用
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)
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)
(系统自动生成,下载前可以参看下载内容)
下载文件列表
LM35\ds18b20.h
....\lcd1602.h
....\LM35
....\LM35.c
....\LM35.hex
....\LM35.lnp
....\LM35.LST
....\LM35.M51
....\LM35.OBJ
....\LM35.Opt
....\LM35.plg
....\LM35.Uv2
....\LM35_Opt.Bak
....\LM35_Uv2.Bak
....\STARTUP.A51
....\STARTUP.LST
....\STARTUP.OBJ
LM35
....\lcd1602.h
....\LM35
....\LM35.c
....\LM35.hex
....\LM35.lnp
....\LM35.LST
....\LM35.M51
....\LM35.OBJ
....\LM35.Opt
....\LM35.plg
....\LM35.Uv2
....\LM35_Opt.Bak
....\LM35_Uv2.Bak
....\STARTUP.A51
....\STARTUP.LST
....\STARTUP.OBJ
LM35