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| """ Murata 60GHz + 摄像头 传感器融合 基于贝叶斯融合 + 深度学习分类
硬件配置: - 60GHz mmWave 雷达: Murata 模块 * 4D 天线阵列 (4发4收) * 距离: 0.1-3m, 分辨率 ~3cm * 微多普勒: 呼吸 + 心跳 - AI 摄像头: Smart Eye 系统 * 2MP RGB-IR, 全局快门 * 关键点: 68点面部 + 17点身体 * 帧率: 30fps - 融合 ECU: Qualcomm QCS8255 * Hexagon NPU: 26 TOPS * DDR: 8GB LPDDR4X """
import numpy as np import torch import torch.nn as nn from typing import Tuple, Dict, Optional from dataclasses import dataclass
@dataclass class RadarDetection: """60GHz 雷达检测结果""" range: float angle_az: float angle_el: float velocity: float rcs: float breath_rate: float heart_rate: float is_stationary: bool
@dataclass class CameraDetection: """摄像头检测结果""" bbox: Tuple[float, float, float, float] keypoints: np.ndarray pose_3d: Optional[np.ndarray] gaze_direction: Optional[np.ndarray] emotion: Optional[str] confidence: float
class SensorFusionModel(nn.Module): """ 60GHz 雷达 + 摄像头 贝叶斯融合模型 融合策略: 1. 摄像头 → 视觉特征 (姿态、位置、行为) 2. 雷达 → 深度信息 + 生命体征 3. 深度融合网络 → 统一分类输出 """ def __init__(self, config: dict = None): super().__init__() self.config = config or { 'radar_feature_dim': 128, 'visual_feature_dim': 256, 'fusion_hidden': 512, 'num_classes': 5, } self.radar_encoder = nn.Sequential( nn.Linear(8, 64), nn.ReLU(), nn.Linear(64, self.config['radar_feature_dim']), nn.ReLU() ) self.visual_encoder = nn.Sequential( nn.Linear(17 * 3, 128), nn.ReLU(), nn.Linear(128, self.config['visual_feature_dim']), nn.ReLU() ) self.fusion_net = nn.Sequential( nn.Linear( self.config['radar_feature_dim'] + self.config['visual_feature_dim'], self.config['fusion_hidden'] ), nn.ReLU(), nn.Dropout(0.2), nn.Linear(self.config['fusion_hidden'], 256), nn.ReLU(), nn.Linear(256, self.config['num_classes']) ) self.vital_sign_head = nn.Sequential( nn.Linear(self.config['radar_feature_dim'], 64), nn.ReLU(), nn.Linear(64, 2) ) def forward(self, radar_data: torch.Tensor, visual_data: torch.Tensor) -> Dict[str, torch.Tensor]: """ 前向传播 Args: radar_data: (B, 8) 雷达特征向量 visual_data: (B, 51) 关键点向量 Returns: classification: (B, 5) 类别logits vital_signs: (B, 2) 生命体征预测 """ radar_feat = self.radar_encoder(radar_data) visual_feat = self.visual_encoder(visual_data) fused = torch.cat([radar_feat, visual_feat], dim=1) classification = self.fusion_net(fused) vital_signs = self.vital_sign_head(radar_feat) return { 'classification': classification, 'vital_signs': vital_signs, 'radar_features': radar_feat, 'visual_features': visual_feat }
class AdaptiveRestraintController: """ 自适应约束系统控制器 基于融合检测结果的乘员分类 → 自适应安全气囊/安全带 Euro NCAP 2026+ 要求: - 根据乘员体型调整气囊展开力度 - 儿童/小身材 → 抑制气囊或降低力度 - OOP异常姿态 → 抑制气囊防止伤害 """ DEPLOYMENT_PROFILES = { 'adult_normal': { 'airbag_force': 1.0, 'pretensioner': True, 'load_limiter': 4.0, }, 'adult_small': { 'airbag_force': 0.7, 'pretensioner': True, 'load_limiter': 3.0, }, 'child': { 'airbag_force': 0.0, 'pretensioner': True, 'load_limiter': 2.5, }, 'oop_out_of_position': { 'airbag_force': 0.0, 'pretensioner': True, 'load_limiter': 2.0, }, 'empty': { 'airbag_force': 0.0, 'pretensioner': False, 'load_limiter': 0.0, } } def get_deployment_profile(self, classification: str, pose_data: Optional[dict] = None) -> dict: """ 获取约束系统展开参数 Args: classification: 乘员分类 pose_data: 姿态数据 (用于OOP检测) Returns: deployment profile """ if pose_data: if self._is_out_of_position(pose_data): return self.DEPLOYMENT_PROFILES['oop_out_of_position'] if classification == 'empty': return self.DEPLOYMENT_PROFILES['empty'] elif classification == 'child': return self.DEPLOYMENT_PROFILES['child'] elif classification == 'adult': if pose_data and pose_data.get('height_cm', 175) < 160: return self.DEPLOYMENT_PROFILES['adult_small'] return self.DEPLOYMENT_PROFILES['adult_normal'] return self.DEPLOYMENT_PROFILES['empty'] def _is_out_of_position(self, pose_data: dict) -> bool: """ 检测异常姿态 (OOP) OOP判定条件: - 前倾超过30° - 侧倾超过25° - 脚踩仪表板 - 跪姿/蹲姿 """ if 'torso_angle_x' in pose_data: if abs(pose_data['torso_angle_x']) > 30: return True if 'torso_angle_y' in pose_data: if abs(pose_data['torso_angle_y']) > 25: return True return False
if __name__ == "__main__": model = SensorFusionModel() radar_input = torch.tensor([[ 1.2, 0.3, -0.1, 0.02, -15.0, 0.3, 1.2, 1.0, ]]) visual_input = torch.randn(1, 51) * 0.5 + 0.5 with torch.no_grad(): output = model(radar_input, visual_input) classes = ['empty', 'adult', 'child', 'pet', 'object'] pred = torch.softmax(output['classification'], dim=1) print("=== Murata 60GHz + 摄像头融合结果 ===") print(f"分类概率:") for i, cls in enumerate(classes): print(f" {cls}: {pred[0, i].item()*100:.1f}%") print(f"预测类别: {classes[pred.argmax(1).item()]}") print(f"呼吸率预测: {output['vital_signs'][0, 0].item():.2f} Hz") print(f"心率预测: {output['vital_signs'][0, 1].item():.2f} Hz") controller = AdaptiveRestraintController() profile = controller.get_deployment_profile( 'child', {'torso_angle_x': 5, 'torso_angle_y': 2, 'height_cm': 110} ) print(f"\n约束系统参数:") print(f" 气囊力度: {profile['airbag_force']}") print(f" 预紧器: {'启用' if profile['pretensioner'] else '禁用'}") print(f" 力限制器: {profile['load_limiter']} kN")
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