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| import numpy as np
class NIRAlcoholDetection: """ 近红外光谱组织液酒精检测原理 Aumovio + trinamiX 方案 核心原理: 1. 酒精分子(C2H5OH)在近红外波段有特征吸收峰 2. 不同波长的 NIR 光穿透皮肤 ~1-2mm 3. 组织液中酒精浓度影响光的吸收/散射模式 4. 多波长光谱分析 → 酒精浓度 """ def __init__(self): self.alcohol_peaks = { 'wavelength_nm': [970, 1200, 1450, 1700, 1730, 2300], 'absorption_strength': [0.3, 0.5, 0.8, 0.9, 0.7, 0.6], 'assignment': [ 'O-H 伸缩(2倍频)', 'C-H 伸缩(2倍频)', 'O-H 伸缩(1倍频)', 'C-H 组合频', 'C-H 伸缩(1倍频)', 'C-H 组合频' ] } self.params = { 'penetration_depth_mm': 1.5, 'detection_range_bac': (0.0, 0.30), 'accuracy_bac': 0.005, 'measurement_time_s': 3, 'sensor_type': 'NIR spectrometer', 'light_source': '多波长 LED 阵列', } def simulate_measurement(self, true_bac: float) -> dict: """ 模拟指尖 BAC 测量过程 Args: true_bac: 真实 BAC 值 (0.0 - 0.30%) Returns: measurement: 模拟测量结果 """ isf_alcohol = true_bac * 0.85 wavelengths = np.array(self.alcohol_peaks['wavelength_nm']) absorption = np.array(self.alcohol_peaks['absorption_strength']) measured_absorption = absorption * isf_alcohol * 10 noise = np.random.normal(0, 0.02, len(wavelengths)) measured_absorption += noise estimated_bac = np.polyfit( absorption, measured_absorption, 1 )[0] / 10 / 0.85 estimated_bac += np.random.normal(0, self.params['accuracy_bac']) estimated_bac = max(0, estimated_bac) return { 'true_bac': true_bac, 'estimated_bac': round(estimated_bac, 4), 'error': round(abs(estimated_bac - true_bac), 4), 'pass': estimated_bac < 0.08, 'measurement_time': self.params['measurement_time_s'], 'wavelengths_used': wavelengths.tolist(), 'absorption_spectrum': measured_absorption.tolist(), }
class AntiSpoofingSystem: """ 防欺骗系统 Aumovio 方案: 1. 点投影仪(dot projector)验证真人手指 2. 隐藏式 DMS 摄像头交叉验证 """ def __init__(self): self.dot_projector = { 'type': 'IR dot projector', 'dots': 30000, 'purpose': '3D 深度感知,区分真人 vs 假体', 'accuracy': '99.9% 真人识别率' } self.dms_camera = { 'type': '隐藏式近红外摄像头', 'position': '显示屏下方', 'purpose': '面部识别 + 驾驶员状态监控', 'features': ['活体检测', '人脸识别', '疲劳检测', '分心检测'] } def verify_driver(self, finger_data, face_data): """ 防欺骗验证流程 """ finger_real = self.dot_projector_verify(finger_data) face_real = self.face_verify(face_data) same_person = self.cross_verify(finger_data, face_data) return { 'finger_authentic': finger_real, 'face_authentic': face_real, 'same_person': same_person, 'allow_start': finger_real and face_real and same_person }
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