- Category:
- SCM
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[C/C++]
[源码]
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- Update:
- 2014-10-20
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- 董熙科
Description: 1.MCU:AT89S52 chip or AT89C52
2: 12MHz crystal
This procedure with temperature compensation, temperature measurement using DS18B20
1.LCD1602 LCD display, ultrasonic module to access.
2 note the polarity ultrasonic module power supply. Not clear please reference the good Taobao circuit diagram
3 does not use frequency of 12MHz crystal, with other frequency oscillator, timer value and measurement
The frequency of 40KHz pulses emitted by the wrong.
4 user often mistakenly sent 20KHZ pulse when the 40KHZ pulse. (40KHz pulse frequency, cycle 25us,
The duty cycle is 50 = 12.5us)
5 if it is adjustable ultrasonic module development board, please check whether the circuit development board and the ultrasonic module
Control pin multiplexing, if reuse, please by jumper circuit development board.
6 if you are using a universal board, please make sure to reset circuit and oscillator circuit of MCU is normal, and at the same time
MCU 31 feet (EA) remember with the high level.
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File list (Check if you may need any files):
超声波测距配备资料
..................\MSP430超声波测距.pdf
..................\电路和使用说明.pdf
..................\超声波测距仪.doc
..................\超声波测距论文.doc
..................\配套程序
..................\........\LCD1602显示不带温度补偿的测距程序
..................\........\.................................\chengxu.bak
..................\........\.................................\chengxu.c
..................\........\.................................\chengxu.LST
..................\........\.................................\chengxu.OBJ
..................\........\.................................\csb1.hex
..................\........\.................................\csb1.M51
..................\........\.................................\csb1.opt.bak
..................\........\.................................\csb1.plg
..................\........\.................................\csb1.Uv2.bak
..................\........\.................................\csb1.uvopt
..................\........\.................................\csb1.uvproj
..................\........\.................................\csb1_Opt.Bak
..................\........\.................................\csb1_Uv2.Bak
..................\........\.................................\csb1_uvopt.bak
..................\........\.................................\STARTUP.A51
..................\........\.................................\STARTUP.lst
..................\........\LCD1602显示带温度补偿
..................\........\.....................\chengxu2.bak
..................\........\.....................\chengxu2.c
..................\........\.....................\chengxu2.LST
..................\........\.....................\chengxu2.OBJ
..................\........\.....................\chengxu2.__i
..................\........\.....................\csb_temp
..................\........\.....................\csb_temp.hex
..................\........\.....................\csb_temp.M51
..................\........\.....................\csb_temp.Opt
..................\........\.....................\csb_temp.plg
..................\........\.....................\csb_temp.Uv2
..................\........\.....................\csb_temp_Opt.Bak
..................\........\.....................\csb_temp_Uv2.Bak
..................\........\.....................\STARTUP.A51
..................\........\.....................\STARTUP.lst
..................\........\.....................\STARTUP.obj
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