摘要随着汽车产业的蓬勃发展，截止 2015 年底，全国机动车保有量达 2。79 亿， 汽车已成为人们日常生活中不可或缺的交通工具。然而，近年来时有因车主遗失 钥匙而导致车辆被盗的事件发生，汽车保险公司也就此采取了“未能提供车钥匙， 增加 5%的免赔率”的措施。因此，依托指纹识别技术，本文设计了一种具有指纹 识别功能的汽车钥匙，该钥匙利用人体指纹作为解锁汽车车门的工具，它可以至 少录入五人的指纹，并具备临时授权、转让主权的功能，它以 STM32F103 为主 要控制芯片，蜂鸣器和 LED 灯构成报警装置，并应用指纹传感器 FPC1011F 与 芯片 AS601 构成指纹识别模块。对于载有该系统的汽车钥匙，汽车使用者必须 通过获得授权并登记指纹信息，最后输入正确指纹来解锁车门，从而提高了汽车 整体的安全性与防盗性。72694

本文的研究内容主要包括以下几部分：系统总体设计、指纹钥匙关键模块的 设计以及产品的结构与外观设计，具体所做工作如下：

（1）对汽车钥匙手持客户端和服务器端系统进行总体设计，完成微处理器、 指纹识别传感器以及指纹处理芯片的选型，利用 STM32 单片机、无线传输芯片 NRF24LO1、指纹传感器 FPC1011F 以及指纹处理芯片 AS601 构建了汽车钥匙快 速指纹识别防盗系统，完成系统设计的硬件功能和软件功能。

（2）采用 AS601 算法芯片与 FPC1011F 指纹传感器构成的指纹模块实现指 纹的采集，图像处理，特征提取、匹配等功能，配合使用 Demo-V2。7 软件，进 行指纹识别模块的检测与评估，并选用工作频率为 2。4GHz 的无线传输芯片 NRF24LO1，进行了长距离的点对点的无线通信系统设计，以及利用汽车模型实 现指纹钥匙的具体功能。

（3）进行了汽车钥匙内部结构、初步造型以及相应的附件设计，利用产品 工业设计方法对汽车钥匙进行了外观美化设计。

该论文有图 34 幅，表 2 个，参考文献 33 篇。

毕业论文关键词：汽车钥匙 指纹识别 单片机 STM32F103

The fingerprint identification function of car keys

Abstract With the vigorous development of the auto industry, by the end of 2015, the car ownership of the country climbs to 279 million。Cars have become indispensable means of transportation in people's daily life。 However, Car Insurance Company takes measures that failing to provide the car keys increases 5% excess because car owners losing their keys has caused the incidents of car stolen in recent years。 Therefore, based on fingerprint identification technology, this paper designs a kind of car keys with the function of fingerprint identification。 This key uses human fingerprints as tools to unlock the car door。 It can be entered at least five people's fingerprints, and has the function of temporary authorization and sovereign transfer。 It takes STM32F103 as the main control chip with the buzzer and the LED lamp constituting the alarm device and the fingerprint sensor FPC1011F and the chip AS601  forming the fingerprint identification module。 As to a car key with the system, the car user s must input the correct fingerprint to unlock the car door by obtaining the authorization and registration of the fingerprint information, which can improve the safety and security of cars。

The research content of this paper mainly includes the following parts。 The specific work is as follows:

(1) The car keys with the client and the server system has carried on the overall design。 It completes the selection of the microprocessor, fingerprint sensors and fingerprint processing chip, using MCU STM32, wireless transmission chip NRF24L01, fingerprint sensors FPC1011F and fingerprint processing chip AS601 to build car keys’ anti-theft system which can quickly identify fingerprints。That achieves the function of hardware and software systems。