文件名称:TestNTC
- 所属分类：
- 单片机(51,AVR,MSP430等)
- 资源属性：
- [ASM] [源码]
- 上传时间：
- 2012-11-26
- 文件大小：
- 3kb
- 下载次数：
- 0次
- 提 供 者：
- l*
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计算被测量电阻。只做比较，不作计算。
计算公式:Rx = Rf * (Tx/Tf)
Rx为被测电阻
Rf为已知电阻，Rf=10K
Tx为被测电阻对电容C放电的计数值，为16位数
Tf为被测电阻对电容C放电的计数值，为16位数
查温度特性表(NTC型号为:CWF2-473F-3950K,大亚科技制造):
下限温度5摄氏度时电阻为121545.44欧,即121.54544K
换算为:Tx/Tf=Rx/Rf=12.154544
扩大1000倍后结果为:12154.544,约为12155,即2F76H
上限温度8摄氏度时电阻为104712.92欧,即104.71292K
换算为:Tx/Tf=Rx/Rf=10.471292
扩大1000倍后结果为:10471.292,约为10471,即28E7H-Calculated by measuring resistance. Only relatively, not be calculated. Formula: Rx = Rf* (Tx/Tf) Rx is the measured resistance Rf of known resistance, Rf = 10K Tx is the measured resistance of the capacitor C discharge count, is 16 bits Tf as measured resistance of the capacitor C discharge count, is 16 bits check the temperature characteristics of the table (NTC model: CWF2-473F-3950K, Dare manufacturing): 5 degrees Celsius lower temperature resistance of 121,545.44 Euro, that is, 121.54544 K translated into: Tx/Tf = Rx/Rf = 12.154544 expanded 1000-fold result: 12154.544, about 12,155, that 2F76H maximum temperature of 8 degrees Celsius when the resistance of 104,712.92 Euro, which 104.71292K translated into: Tx/Tf = Rx/Rf = 10.471292 expanded 1000-fold result: 10471.292, about 10,471, that 28E7H
计算公式:Rx = Rf * (Tx/Tf)
Rx为被测电阻
Rf为已知电阻，Rf=10K
Tx为被测电阻对电容C放电的计数值，为16位数
Tf为被测电阻对电容C放电的计数值，为16位数
查温度特性表(NTC型号为:CWF2-473F-3950K,大亚科技制造):
下限温度5摄氏度时电阻为121545.44欧,即121.54544K
换算为:Tx/Tf=Rx/Rf=12.154544
扩大1000倍后结果为:12154.544,约为12155,即2F76H
上限温度8摄氏度时电阻为104712.92欧,即104.71292K
换算为:Tx/Tf=Rx/Rf=10.471292
扩大1000倍后结果为:10471.292,约为10471,即28E7H-Calculated by measuring resistance. Only relatively, not be calculated. Formula: Rx = Rf* (Tx/Tf) Rx is the measured resistance Rf of known resistance, Rf = 10K Tx is the measured resistance of the capacitor C discharge count, is 16 bits Tf as measured resistance of the capacitor C discharge count, is 16 bits check the temperature characteristics of the table (NTC model: CWF2-473F-3950K, Dare manufacturing): 5 degrees Celsius lower temperature resistance of 121,545.44 Euro, that is, 121.54544 K translated into: Tx/Tf = Rx/Rf = 12.154544 expanded 1000-fold result: 12154.544, about 12,155, that 2F76H maximum temperature of 8 degrees Celsius when the resistance of 104,712.92 Euro, which 104.71292K translated into: Tx/Tf = Rx/Rf = 10.471292 expanded 1000-fold result: 10471.292, about 10,471, that 28E7H
相关搜索： ntc
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pic16c54-IO_TestNTC.asm