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STD 超声波倒车雷达系统设计方案
Mode: Editors' pick
- 1
Update time：
2021-04-04 11:46:14
Creation time：
2016-05-05 07:34:08
Description
本系统设计采用STC89C52单片机作为控制器，利用超声波测距原理实现障碍物检测功能。硬件部分主要包括超声波检测模块、温度采集电路、LCD显示电路和报警电路。利用超声波对距离的检测，将车体到障碍物间的距离探测出来，然后经单片机处理运算且在LCD显示出所测距离，并与设定的报警距离值进行判断比较。当测得距离小于设定值时，STC89C52发出指令控制二极管发光和蜂鸣器报警。
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | AT89C52 | U1 | DIP40 | 1 |
| 2 | 22p | C1,C2 | C1 | 2 |
| 3 | 22u | C3 | CP_8X13MM | 1 |
| 4 | XTALfast | Q1 | 1X02 | 1 |
| 5 | SPST_ON | S1,S2,S3,S4,S5 | TACTILE-PTH | 5 |
| 6 | 10k | R1 | R3 | 1 |
| 7 | HD44780LCD-1602 | X1 | LCD1602 | 1 |
| 8 | 10k | R3 | TRIM_POT_PTH | 1 |
| 9 | RPACK-BUSSED-8 | R2 | RPACK-SIP-PTH-8-LP | 1 |
| 10 | LED | D1,D2,D3 | LED3MM | 3 |
| 11 | 470 | R4,R5 | R3 | 2 |
| 12 | 2k | R6,R9 | R3 | 2 |
| 13 | BC807_16 | Q2 | SOT23 | 1 |
| 14 | 8 | R7 | 1X02 | 1 |
| 15 | -CON4 | U2,U3,U4 | CON4 | 3 |
| 16 | -CON3 | U5,U6 | CON3 | 2 |
| 17 | 4.7k | R8 | R3 | 1 |
| 18 | CON10X01 | J1,J2,J3,J4 | 1X10 | 4 |
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