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| import numpy as np
class FabricSensorOccupantClassifier: """ Brighter Signals 织物传感器座椅分类 传感器: 柔性织物压力阵列(如 8x8 或 16x16) 安装: 座椅坐垫蒙皮下 """ def __init__(self, grid_size: tuple = (8, 8)): self.grid_h, self.grid_w = grid_size def classify(self, pressure_map: np.ndarray) -> dict: """ 从压力分布矩阵分类乘员 Args: pressure_map: (H, W) 压力值矩阵 Returns: classification: 占用分类结果 """ total_weight = np.sum(pressure_map) max_pressure = np.max(pressure_map) pressure_std = np.std(pressure_map) rows, cols = np.mgrid[0:self.grid_h, 0:self.grid_w] if total_weight > 0: cg_row = np.sum(rows * pressure_map) / total_weight cg_col = np.sum(cols * pressure_map) / total_weight else: cg_row = cg_col = 0 active_cells = np.sum(pressure_map > 0.1 * max_pressure) if total_weight < 5: return {'category': 'empty', 'confidence': 0.99} if total_weight < 15: return { 'category': 'infant_seat', 'confidence': 0.85, 'weight_est': total_weight } elif total_weight < 36: return { 'category': 'child', 'confidence': 0.90, 'weight_est': total_weight, 'posture': 'normal' if pressure_std < 0.3 else 'leaning' } else: if active_cells < 10: posture = 'edge_seating' elif pressure_std > 0.5: posture = 'leaning' else: posture = 'normal' return { 'category': 'adult', 'confidence': 0.95, 'weight_est': total_weight, 'posture': posture, 'pressure_cg': (cg_row, cg_col), 'contact_area': active_cells }
if __name__ == "__main__": print("=" * 60) print("Brighter Signals 织物传感器分类") print("InCabin Europe 2026") print("=" * 60) classifier = FabricSensorOccupantClassifier(grid_size=(8, 8)) np.random.seed(42) scenarios = [ ("空座椅", np.zeros((8, 8))), ("儿童座椅", np.random.rand(8, 8) * 0.3 + 0.1), ("6岁儿童", np.random.rand(8, 8) * 0.5 + 0.2), ("成人正常", np.random.rand(8, 8) * 0.6 + 0.3), ("成人前倾", np.random.rand(8, 8) * 0.4 + 0.5), ("成人侧倾", np.random.rand(8, 8) * 0.3 + 0.2), ] scenarios[4][1][:4, :] *= 2.0 scenarios[5][1][:, :4] *= 2.0 print(f"\n{'场景':<15} {'分类':<15} {'置信度':<10} {'估计重量':<10}") print("-" * 50) for name, pm in scenarios: result = classifier.classify(pm) print(f"{name:<15} {result['category']:<15} " f"{result.get('confidence', 0):.0%} " f"{result.get('weight_est', 0):.1f}kg") print(f"\n{'='*60}") print("成本对比") print(f"{'='*60}") print(f" 现有压力传感器方案: $5-8/座椅") print(f" Brighter Signals织物: ~$2-3/座椅 (↓50-60%)") print(f" 安装方式: 蒙皮下直接铺设") print(f" 合规: 满足US FMVSS 208 + EU ECE R16")
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