比较少见的夜视辅助系统拆解，看看都有哪些车规芯片

跟着科技赓续提高，各类先进的辅助监测和智能化体系在汽车上开端遍及，极年夜的进步了汽车驾驶平安性和舒适性。应用红外成像技术辅助驾驶员在黑夜中看清途径、行人和障碍物等，削减事故产生，加强自动平安性的夜视辅助体系便是一种赞助驾驶员进步夜间行车平安的驾驶辅助体系。

此次要拆的是AutoLiv（奥托拉夫，一家异常著名的汽车平安体系办理计划提供商）为奥迪临盆的二代夜视体系的电脑模块，共同他家的夜视（热成像）摄像头使用。它可以侦测出车前的行人，经由过程仪表盘上的显示屏显示热成像的图像和对行人行进高亮处置。(详细拆解进程请原贴阅读：https://www.eeworld.com.cn/aP8SejH)

它的外壳使用外铝合金材质，可以很好的屏障辐射，不外内部并没有防水设计，防水必要在外部再扣一个塑料盒。

拆开外壳可以直接取下主板，主板左右各一颗TI的DSP芯片，TMS320DM642。中央有一颗XILINX的XA3S500E汽车级FPGA。

后头有一颗飞思卡尔的MC9S12XDT512，16位的单片机。

DSP芯片体积比拟年夜

FPGA周边有2颗DDR RAM和一颗FLASH芯片

在另一颗DSP阁下是有一颗ADI的ADV7179，RGB转CVBS芯片，经由过程一颗TI的LMH6643和右上角的双路FDW2501N双通道的N沟道MOSFET将数据转换成差分旌旗灯号输出

DS90C124是一颗LVDS解串器，用来将夜视相机经由过程2线发送来的LVDS旌旗灯号转换成TTL旌旗灯号,经由过程FPGA采集数据后送到DSP做进一步的图像处置

LM2904 是一颗1A、26V、高 PSRR、低压降稳压器

右上角的TPS5430 是一颗5.5V 至 36V 输入 3A 500kHz 降压转换器，左下解的TPS54310PWPR 是一颗输入电压为 3V 至 6V 的 3A 同步降压转换器

板子上一共有2颗丝印为625033的没找到详细型号，可以确定是CAN收发器，此中一起与夜视相机通讯，另一起与汽车的其它总线通讯

下边是一颗英飞凌的ITS428L2，带有集成垂直功率FET的高端电源开关，提供嵌入式掩护和诊断功效。

IDT74FCT3807是一颗时钟驱动器，左边有2颗晶振

与相机衔接的使用HSD 4P接口

内部有2颗日本ELNA的电解电容

附上一段夜视电脑和夜视相机通讯的数据，由于夜视电脑内保留的ID与相机不匹配，以是它们颠末一段艰巨的对话（附注释）后就进入了反复的一问一答模式。

ID: 0x657DATA: 8B 03 22 02 00 FF FF FF
ID: 0x68BDATA: 57 10 7B 62 02 00 00 00
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 00 00 00 00 01 9C
ID: 0x68BDATA: 57 22 00 15 BA F3 00 03
ID: 0x68BDATA: 57 23 70 8A 00 00 00 00
ID: 0x68BDATA: 57 24 00 00 00 00 00 00
ID: 0x68BDATA: 57 25 00 00 00 00 00 00
ID: 0x68BDATA: 57 26 00 02 D0 B4 00 03
ID: 0x68BDATA: 57 27 CE 7F 00 00 0C 1B
ID: 0x68BDATA: 57 28 00 00 00 43 FF FF
ID: 0x68BDATA: 57 29 FF FF FF FF FF FF
ID: 0x68BDATA: 57 2A FF FF FF FF FF FF
ID: 0x68BDATA: 57 2B FF FF FF FF FF FF
ID: 0x68BDATA: 57 2C FF FF FF FF FF FF
ID: 0x68BDATA: 57 2D FF FF FF FF FF FF
ID: 0x68BDATA: 57 2E FF FF FF FF FF FF
ID: 0x68BDATA: 57 2F FF FF FF FF FF FF
ID: 0x68BDATA: 57 20 FF FF FF FF FF FF
ID: 0x68BDATA: 57 21 FF FF FF FF FF FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF 00 00
ID: 0x5D7DATA: 01 03 01 FF FF FF FF FF
ID: 0x301DATA: 08 00 00 00 42 F7 40 C4
ID: 0x657DATA: 8B 02 27 01 FF FF FF FF
ID: 0x68BDATA: 57 10 12 67 01 8A 67 90
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 4F AE E1 62 8D 56
ID: 0x68BDATA: 57 22 26 0D E0 42 F7 40
ID: 0x68BDATA: 57 23 C4 00 00 00 00 00
ID: 0x657DATA: 8B 10 12 27 02 97 99 57
ID: 0x68BDATA: 57 30 00 00 00 00 00 00
ID: 0x657DATA: 8B 21 12 5A 12 10 A1 27
ID: 0x657DATA: 8B 22 71 1A 53 71 40 E9
ID: 0x657DATA: 8B 23 54 FF FF FF FF FF
ID: 0x68BDATA: 57 02 67 02 00 00 00 00
ID: 0x303DATA: 04 C2 04 3C 00 00 7F 08
ID: 0x5D7DATA: 01 03 02 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x302DATA: 08 18 1E 51 00 28 01 24
ID: 0x303DATA: 14 02 00 FD 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 01 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 01 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 01 FF FF FF FF FF
ID: 0x303DATA: 00 02 00 FD 00 00 7F 08
ID: 0x301DATA: 00 00 00 00 42 F7 40 C4 //相机回复本身的ID
ID: 0x301DATA: 00 00 00 00 42 F7 40 C4
ID: 0x301DATA: 00 00 00 00 42 F7 40 C4
ID: 0x657DATA: 8B 02 27 01 FF FF FF FF //电脑向相机要随机数
ID: 0x68BDATA: 57 10 12 67 01 00 00 00 //相机向电脑返回随机数和ID
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 00 00 00 00 00 00
ID: 0x68BDATA: 57 22 00 00 00 00 00 00
ID: 0x68BDATA: 57 23 00 00 00 00 00 00
ID: 0x657DATA: 8B 03 22 01 00 FF FF FF //电脑一看满是0，就有点懵B，问相机你什么意思
ID: 0x68BDATA: 57 10 23 62 01 00 36 31 //相机说你谁呀就TM批示我干这干那的
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF //电脑说我是你年夜爷，好使不
ID: 0x68BDATA: 57 21 31 33 35 33 36 30 //相机说去你年夜爷的，我爹都欠好使
ID: 0x68BDATA: 57 22 30 43 31 31 32 33
ID: 0x68BDATA: 57 23 35 30 30 32 32 38
ID: 0x68BDATA: 57 24 20 20 20 20 20 20
ID: 0x68BDATA: 57 25 20 20 20 20 20 20
ID: 0x657DATA: 8B 03 22 01 02 FF FF FF
ID: 0x68BDATA: 57 10 7B 62 01 02 39 32
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 30 35 38 39 39 FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF FF FF
ID: 0x68BDATA: 57 25 FF FF FF FF FF FF
ID: 0x68BDATA: 57 26 32 30 31 32 30 31
ID: 0x68BDATA: 57 27 32 36 FF FF FF FF
ID: 0x68BDATA: 57 28 FF FF FF FF FF FF
ID: 0x68BDATA: 57 29 FF FF FF FF FF FF
ID: 0x68BDATA: 57 2A FF FF FF FF FF FF
ID: 0x68BDATA: 57 2B FF FF FF FF FF FF
ID: 0x68BDATA: 57 2C FF FF FF FF FF FF
ID: 0x68BDATA: 57 2D FF FF FF FF FF FF
ID: 0x68BDATA: 57 2E FF FF FF FF FF FF
ID: 0x68BDATA: 57 2F FF FF FF FF FF FF
ID: 0x68BDATA: 57 20 FF FF FF FF FF FF
ID: 0x68BDATA: 57 21 FF FF FF FF FF FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF 00 00
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x657DATA: 8B 04 2E 01 01 3F FF FF
ID: 0x68BDATA: 57 03 6E 01 01 00 00 00
ID: 0x657DATA: 8B 03 22 04 00 FF FF FF
ID: 0x68BDATA: 57 10 7B 62 04 00 FF FF
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 FF FF FF FF FF FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF FF FF
ID: 0x68BDATA: 57 25 FF FF FF FF FF FF
ID: 0x68BDATA: 57 26 FF FF FF FF FF FF
ID: 0x68BDATA: 57 27 FF FF FF FF FF FF
ID: 0x68BDATA: 57 28 FF FF FF FF FF FF
ID: 0x68BDATA: 57 29 FF FF FF FF FF FF
ID: 0x68BDATA: 57 2A FF FF FF FF FF FF
ID: 0x68BDATA: 57 2B FF FF FF FF FF FF
ID: 0x68BDATA: 57 2C FF FF FF FF FF FF
ID: 0x68BDATA: 57 2D FF FF FF FF FF FF
ID: 0x68BDATA: 57 2E FF FF FF FF FF FF
ID: 0x68BDATA: 57 2F FF FF FF FF FF FF
ID: 0x68BDATA: 57 20 FF FF FF FF FF FF
ID: 0x68BDATA: 57 21 FF FF FF FF FF FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF 00 00
ID: 0x303DATA: 04 02 00 FD 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x303DATA: 04 02 00 FD 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x303DATA: 04 02 00 FD 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x303DATA: 04 22 00 FD 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x657DATA: 8B 02 11 01 00 00 00 00
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x303DATA: 00 C2 04 3C 00 90 FF 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x303DATA: 04 C2 04 3C 00 00 7F 08
ID: 0x401DATA: 00 00 21 0C 01 00 00 00
ID: 0x5D7DATA: 01 03 03 FF FF FF FF FF
ID: 0x303DATA: 04 C2 04 3C 00 00 7F 08
ID: 0x657DATA: 8B 03 22 02 00 FF FF FF
ID: 0x68BDATA: 57 10 7B 62 02 00 00 00
ID: 0x657DATA: 8B 30 00 02 FF FF FF FF
ID: 0x68BDATA: 57 21 00 00 00 00 01 9C
ID: 0x68BDATA: 57 22 00 15 BA F3 00 03
ID: 0x68BDATA: 57 23 70 8A 00 00 00 00
ID: 0x68BDATA: 57 24 00 00 00 00 00 00
ID: 0x68BDATA: 57 25 00 00 00 00 00 00
ID: 0x68BDATA: 57 26 00 02 D0 B4 00 03
ID: 0x68BDATA: 57 27 CE 7F 00 00 0C 1B
ID: 0x68BDATA: 57 28 00 00 00 43 FF FF
ID: 0x68BDATA: 57 29 FF FF FF FF FF FF
ID: 0x68BDATA: 57 2A FF FF FF FF FF FF
ID: 0x68BDATA: 57 2B FF FF FF FF FF FF
ID: 0x68BDATA: 57 2C FF FF FF FF FF FF
ID: 0x68BDATA: 57 2D FF FF FF FF FF FF
ID: 0x68BDATA: 57 2E FF FF FF FF FF FF
ID: 0x68BDATA: 57 2F FF FF FF FF FF FF
ID: 0x68BDATA: 57 20 FF FF FF FF FF FF
ID: 0x68BDATA: 57 21 FF FF FF FF FF FF
ID: 0x68BDATA: 57 22 FF FF FF FF FF FF
ID: 0x68BDATA: 57 23 FF FF FF FF FF FF
ID: 0x68BDATA: 57 24 FF FF FF FF 00 00
ID: 0x401DATA: 00 00 21 0C 01 00 00 00

以前夕视电脑还会向相机要随机数，后来发现相机多次给的都纰谬就进入了自我掩护模式。更多汽车电子相关内容，请存眷订阅号：汽车开发圈