C++ 代码实现高性能异构分布式并行智慧停车场系统
停车位管理模块
负责跟踪和管理停车位的状态,包括空闲、占用、预定等。 通过高效的并行计算和分布式数据库实现停车位状态的实时更新。
#include <iostream>
#include <vector>
#include <mutex>
#include <map>
#include <thread>
class ParkingSpot {
public:
enum Status { EMPTY, OCCUPIED, RESERVED };
ParkingSpot(int id) : id(id), status(EMPTY) {}
void reserve() {
std::lock_guard<std::mutex> lock(mtx);
if (status == EMPTY) status = RESERVED;
}
void occupy() {
std::lock_guard<std::mutex> lock(mtx);
if (status == RESERVED) status = OCCUPIED;
}
void release() {
std::lock_guard<std::mutex> lock(mtx);
status = EMPTY;
}
Status getStatus() {
std::lock_guard<std::mutex> lock(mtx);
return status;
}
private:
int id;
Status status;
std::mutex mtx;
};
class ParkingManager {
public:
ParkingManager(int num_spots) {
for (int i = 0; i < num_spots; ++i) {
spots.push_back(std::make_shared<ParkingSpot>(i));
}
}
std::shared_ptr<ParkingSpot> findAvailableSpot() {
for (auto& spot : spots) {
if (spot->getStatus() == ParkingSpot::EMPTY) {
return spot;
}
}
return nullptr;
}
private:
std::vector<std::shared_ptr<ParkingSpot>> spots;
};
车辆识别模块
使用计算机视觉和深度学习技术实现车辆的自动识别和车牌识别。 支持多种硬件加速(如GPU)以提升性能。
import cv2
import numpy as np
class VehicleRecognition:
def __init__(self, model_path):
self.model = cv2.dnn.readNet(model_path)
def detect_vehicle(self, image):
blob = cv2.dnn.blobFromImage(image, 1/255.0, (416, 416), swapRB=True, crop=False)
self.model.setInput(blob)
output_layers = self.model.forward(self.get_output_layers())
return self.process_detections(output_layers)
def get_output_layers(self):
layers = self.model.getLayerNames()
return [layers[i[0] - 1] for i in self.model.getUnconnectedOutLayers()]
def process_detections(self, detections):
vehicles = []
for detection in detections:
scores = detection[5:]
class_id = np.argmax(scores)
if class_id == 2: # assuming class 2 is vehicle
vehicles.append(detection)
return vehicles
支付与计费模块
负责计算停车费用,并集成多种支付方式。 实现并行的计费计算和分布式支付处理。
#include <iostream>
#include <chrono>
#include <map>
class PaymentManager {
public:
void startSession(int vehicle_id) {
start_times[vehicle_id] = std::chrono::system_clock::now();
}
double endSession(int vehicle_id) {
auto end_time = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed = end_time - start_times[vehicle_id];
double cost = calculateCost(elapsed.count());
start_times.erase(vehicle_id);
return cost;
}
double calculateCost(double time_seconds) {
return time_seconds * rate_per_second;
}
private:
std::map<int, std::chrono::system_clock::time_point> start_times;
const double rate_per_second = 0.05; // example rate
};
用户管理模块
处理用户的注册、登录、车位预定、历史记录等操作。 使用分布式数据库存储用户数据,支持高并发访问。
import sqlite3
class UserManager:
def __init__(self, db_path):
self.conn = sqlite3.connect(db_path)
self.cursor = self.conn.cursor()
self.cursor.execute('''CREATE TABLE IF NOT EXISTS users
(id INTEGER PRIMARY KEY,
name TEXT,
vehicle_id INTEGER)''')
def register_user(self, name, vehicle_id):
self.cursor.execute("INSERT INTO users (name, vehicle_id) VALUES (?, ?)", (name, vehicle_id))
self.conn.commit()
def get_user_info(self, user_id):
self.cursor.execute("SELECT * FROM users WHERE id=?", (user_id,))
return self.cursor.fetchone()
def reserve_spot(self, user_id, spot_id):
# Reserve a parking spot for the user
pass
监控与安全模块
实现停车场的实时监控,检测异常情况。 集成分布式安全监控系统,确保停车场的安全。
#include <iostream>
#include <thread>
#include <chrono>
class SecurityMonitor {
public:
void monitor() {
while (true) {
std::this_thread::sleep_for(std::chrono::seconds(1));
checkForIncidents();
}
}
void checkForIncidents() {
// Logic to check for security incidents
std::cout << "Monitoring parking lot security...\n";
}
};
调度与优化模块
负责分配最佳停车位,优化车辆流动,提高停车场的利用率。 实现并行计算和分布式调度算法。
#include <iostream>
#include <vector>
#include <algorithm>
#include <mutex>
class SchedulingManager {
public:
int findOptimalSpot(int vehicle_id) {
std::lock_guard<std::mutex> lock(mtx);
// Implement a scheduling algorithm to find the best parking spot
return optimal_spot;
}
private:
std::mutex mtx;
int optimal_spot = 0;
};
总结
以上代码提供了一个智慧停车场系统的模块化实现示例,每个模块都可以进一步扩展以适应实际需求。使用分布式技术、并行计算和异构计算资源可以显著提高系统性能,确保在高负载下的稳定运行。
Python 代码实现高性能异构分布式并行智慧停车场系统
停车位管理模块
负责跟踪和管理停车位的状态,包括空闲、占用、预定等。 通过高效的并行计算和分布式数据库实现停车位状态的实时更新。
import threading
class ParkingSpot:
def __init__(self, spot_id):
self.spot_id = spot_id
self.status = "EMPTY"
self.lock = threading.Lock()
def reserve(self):
with self.lock:
if self.status == "EMPTY":
self.status = "RESERVED"
def occupy(self):
with self.lock:
if self.status == "RESERVED":
self.status = "OCCUPIED"
def release(self):
with self.lock:
self.status = "EMPTY"
def get_status(self):
with self.lock:
return self.status
class ParkingManager:
def __init__(self, num_spots):
self.spots = [ParkingSpot(i) for i in range(num_spots)]
def find_available_spot(self):
for spot in self.spots:
if spot.get_status() == "EMPTY":
return spot
return None
车辆识别模块
使用计算机视觉和深度学习技术实现车辆的自动识别和车牌识别。 支持多种硬件加速(如GPU)以提升性能。
import cv2
class VehicleRecognition:
def __init__(self, model_path):
self.model = cv2.dnn.readNetFromONNX(model_path)
def detect_vehicle(self, image):
blob = cv2.dnn.blobFromImage(image, 1/255.0, (416, 416), swapRB=True, crop=False)
self.model.setInput(blob)
detections = self.model.forward()
vehicles = []
for detection in detections[0, 0, :, :]:
confidence = detection[2]
if confidence > 0.5:
vehicles.append(detection)
return vehicles
支付与计费模块
负责计算停车费用,并集成多种支付方式。 实现并行的计费计算和分布式支付处理。
import time
class PaymentManager:
def __init__(self):
self.sessions = {}
def start_session(self, vehicle_id):
self.sessions[vehicle_id] = time.time()
def end_session(self, vehicle_id):
start_time = self.sessions.pop(vehicle_id, None)
if start_time:
duration = time.time() - start_time
return self.calculate_cost(duration)
return 0
def calculate_cost(self, duration):
rate_per_hour = 5.0 # Example rate
return (duration / 3600) * rate_per_hour
用户管理模块
处理用户的注册、登录、车位预定、历史记录等操作。 使用分布式数据库存储用户数据,支持高并发访问。
import sqlite3
class UserManager:
def __init__(self, db_path):
self.conn = sqlite3.connect(db_path)
self.cursor = self.conn.cursor()
self.cursor.execute('''CREATE TABLE IF NOT EXISTS users
(id INTEGER PRIMARY KEY,
name TEXT,
vehicle_id INTEGER)''')
def register_user(self, name, vehicle_id):
self.cursor.execute("INSERT INTO users (name, vehicle_id) VALUES (?, ?)", (name, vehicle_id))
self.conn.commit()
def get_user_info(self, user_id):
self.cursor.execute("SELECT * FROM users WHERE id=?", (user_id,))
return self.cursor.fetchone()
监控与安全模块
实现停车场的实时监控,检测异常情况。 集成分布式安全监控系统,确保停车场的安全。
import threading
import time
class SecurityMonitor:
def __init__(self):
self.running = True
def start_monitoring(self):
thread = threading.Thread(target=self.monitor)
thread.start()
def monitor(self):
while self.running:
time.sleep(1)
self.check_for_incidents()
def check_for_incidents(self):
# Example: Just print a monitoring message
print("Monitoring parking lot security...")
def stop_monitoring(self):
self.running = False
调度与优化模块
负责分配最佳停车位,优化车辆流动,提高停车场的利用率。 实现并行计算和分布式调度算法。
class SchedulingManager:
def __init__(self, parking_manager):
self.parking_manager = parking_manager
def find_optimal_spot(self, vehicle_id):
# Example: Simply find the first available spot
available_spot = self.parking_manager.find_available_spot()
if available_spot:
available_spot.reserve()
return available_spot.spot_id
return None