鸿蒙分布式AR化学实验室：多设备协同的分子可视化与交互系统原创

进修的泡芙

发布于 2025-6-22 18:04

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鸿蒙分布式AR化学实验室：多设备协同的分子可视化与交互系统

一、系统架构设计

!https://example.com/harmonyos-chem-lab-arch.png

采用四层架构：
原子层：分子数据存储与计算

分子层：3D模型渲染与物理模拟

反应层：化学过程可视化与交互

实验层：多终端协同操作界面

二、核心模块实现
分子渲染引擎

// MoleculeRenderer.ts
import xComponent from ‘@ohos.xComponent’;
import chemistry from ‘@ohos.chemistry’;
import distributedData from ‘@ohos.data.distributedData’;

interface MoleculeModel {
moleculeId: string;
formula: string;
atoms: Atom[];
bonds: Bond[];
position: [number, number, number];
rotation: [number, number, number];
scale: number;
export class MoleculeRenderer {

private xComponentContext?: xComponent.XComponentContext;
private kvManager: distributedData.KVManager;
private loadedMolecules = new Set<string>();

async init() {
// 初始化3D渲染上下文
this.xComponentContext = await xComponent.createContext(‘ar_chemistry’);

// 初始化分布式数据同步
const context = getContext(this);
this.kvManager = distributedData.createKVManager({ context });

// 设置分子变化监听
this.setupMoleculeListeners();

async renderMolecule(molecule: MoleculeModel) {

// 确保分子模型已加载
if (!this.loadedMolecules.has(molecule.moleculeId)) {
  await this.loadMoleculeModel(molecule.formula);
  this.loadedMolecules.add(molecule.moleculeId);

// 本地渲染

this.xComponentContext?.sendMessage({
  type: 'render_molecule',
  moleculeId: molecule.moleculeId,
  position: molecule.position,
  rotation: molecule.rotation,
  scale: molecule.scale
});

// 同步到其他设备
await this.syncMoleculeState(molecule);

private async loadMoleculeModel(formula: string) {

const modelData = await chemistry.getMoleculeModel(formula);
await this.xComponentContext?.sendMessage({
  type: 'load_model',
  modelId: formula,
  data: modelData
});

// 其他方法…

化学反应模拟器

// ReactionSimulator.ts
import chemistry from ‘@ohos.chemistry’;
import deviceManager from ‘@ohos.distributedHardware.deviceManager’;

export class ReactionSimulator {
private reactionCache = new Map<string, ReactionPath>();

async simulateReaction(reactants: string[], conditions: ReactionConditions) {
const reactionKey = this.getReactionKey(reactants, conditions);

// 检查缓存
if (this.reactionCache.has(reactionKey)) {
  return this.reactionCache.get(reactionKey)!;

// 分布式计算反应路径

const devices = await deviceManager.getTrustedDeviceListSync();
const path = await this.distributedSimulation(reactants, conditions, devices);

// 缓存结果
this.reactionCache.set(reactionKey, path);
return path;

private async distributedSimulation(

reactants: string[],
conditions: ReactionConditions,
devices: deviceManager.DeviceBasicInfo[]

): Promise<ReactionPath> {
// 将计算任务分配到多个设备
const tasks = this.splitReactionTasks(reactants, conditions, devices.length);
const results = await Promise.all(
tasks.map((task, i) =>
this.remoteSimulate(devices[i % devices.length].deviceId, task)
)
);

// 合并计算结果
return this.mergeReactionPaths(results);

// 其他方法…

主页面实现（ArkUI）

// ChemLabApp.ets
import { MoleculeRenderer } from ‘./MoleculeRenderer’;
import { ReactionSimulator } from ‘./ReactionSimulator’;

@Entry
@Component
struct ChemLabApp {
@State currentMolecules: MoleculeModel[] = [];
@State reactionPath?: ReactionPath;
@State devices: deviceManager.DeviceBasicInfo[] = [];

private renderer = new MoleculeRenderer();
private simulator = new ReactionSimulator();
private arController?: ARController;

async aboutToAppear() {
await this.renderer.init();
await this.simulator.init();
this.loadDeviceList();
async addMolecule(formula: string) {

const molecule = await chemistry.getMoleculeData(formula);
this.currentMolecules = [...this.currentMolecules, molecule];
await this.renderer.renderMolecule(molecule);

async startReaction(reactants: string[]) {

const conditions = this.getCurrentConditions();
this.reactionPath = await this.simulator.simulateReaction(reactants, conditions);
await this.visualizeReaction(this.reactionPath);

build() {

Column() {
  // AR视图容器
  XComponent({
    id: 'ar_view',
    type: 'xcomponent',
    libraryname: 'ar_chemistry',
    controller: this.renderer.xComponentContext
  })
  .width('100%')
  .height('60%')
  
  // 分子控制面板
  MoleculePalette({
    onAdd: (formula) => this.addMolecule(formula)
  })
  
  // 反应控制面板
  ReactionControls({
    onStart: (reactants) => this.startReaction(reactants)
  })
  
  // 设备连接状态
  Text(${this.devices.length}个设备协同中)
    .fontSize(14)
    .fontColor('#666666')

}

// 其他方法…
@Component

struct MoleculePalette {
@Param onAdd: (formula: string) => void;
@State searchText: string = ‘’;

build() {
Column() {
TextInput({ placeholder: ‘输入分子式如H2O’ })
.onChange((text: string) => { this.searchText = text; })

  Button('添加到实验台')
    .onClick(() => this.onAdd(this.searchText))
  
  // 常用分子快捷按钮
  Row() {
    Button('H₂O').onClick(() => this.onAdd('H2O'))
    Button('CO₂').onClick(() => this.onAdd('CO2'))
    Button('C₆H₁₂O₆').onClick(() => this.onAdd('C6H12O6'))

}

@Component
struct ReactionControls {
@Param onStart: (reactants: string[]) => void;
@State selected: string[] = [];

build() {
Column() {
Text(‘选择反应物:’)
.fontSize(16)

  // 分子选择器
  MoleculeSelector({
    molecules: this.availableMolecules,
    onSelect: (mol) => this.toggleSelection(mol)
  })
  
  Button('开始反应')
    .onClick(() => this.onStart(this.selected))
    .enabled(this.selected.length > 0)

}

// 其他方法…

三、跨设备协同关键实现
分子状态同步

// 在MoleculeRenderer中添加
private async syncMoleculeState(molecule: MoleculeModel) {
const kvStore = await this.kvManager.getKVStore(‘molecule_states’);
await kvStore.put(molecule.moleculeId, {
…molecule,
lastUpdate: Date.now(),
deviceId: ‘local_device’
});
private setupMoleculeListeners() {

const kvStore = await this.kvManager.getKVStore(‘molecule_states’);
kvStore.on(‘dataChange’, distributedData.SubscribeType.SUBSCRIBE_TYPE_REMOTE,
(changes) => {
changes.forEach(({ key, value }) => {
if (value.deviceId !== ‘local_device’) {
this.renderMolecule(value);
});

});

协同分子操作

// 新增MoleculeManipulator.ts
export class MoleculeManipulator {
static async rotateMolecule(moleculeId: string, rotation: [number, number, number]) {
const kvStore = await distributedData.getKVStore(‘molecule_states’);
const molecule = await kvStore.get(moleculeId) as MoleculeModel;

if (molecule) {
  await kvStore.put(moleculeId, {
    ...molecule,
    rotation,
    lastUpdate: Date.now()
  });

}

// 其他操作…

实验过程录制

// 新增ExperimentRecorder.ts
export class ExperimentRecorder {
private kvManager: distributedData.KVManager;

async init() {
const context = getContext(this);
this.kvManager = distributedData.createKVManager({ context });
async startRecording(sessionId: string) {

const kvStore = await this.kvManager.getKVStore('experiment_records');
await kvStore.put(session_${sessionId}_start, {
  sessionId,
  timestamp: Date.now(),
  devices: await deviceManager.getTrustedDeviceListSync()
});

async logAction(sessionId: string, action: ExperimentAction) {

const kvStore = await this.kvManager.getKVStore('experiment_records');
await kvStore.put(action_{sessionId}_{Date.now()}, {
  ...action,
  sessionId
});

// 其他方法…

四、性能优化方案
分子模型压缩

// 在MoleculeRenderer中添加
private async loadCompressedModel(formula: string) {
const fullModel = await chemistry.getMoleculeModel(formula);
const compressed = this.compressModel(fullModel);

await this.xComponentContext?.sendMessage({
type: ‘load_compressed’,
modelId: formula,
data: compressed
});
private compressModel(model: MoleculeModelData): CompressedModel {

// 简化分子模型数据
return {
a: model.atoms.map(atom => ({
s: atom.symbol,
p: atom.position
})),
b: model.bonds.map(bond => ({
t: bond.type,
a: bond.atomIndices
}))
};

反应计算缓存

const reactionCache = new Map<string, ReactionPath>();

async getCachedReaction(reactants: string[], conditions: ReactionConditions) {
const cacheKey = this.getReactionKey(reactants, conditions);
if (reactionCache.has(cacheKey)) {
return reactionCache.get(cacheKey);
const path = await this.simulateReaction(reactants, conditions);

reactionCache.set(cacheKey, path);
return path;

差分状态更新

// 在MoleculeRenderer中添加
private lastMoleculeStates: Record<string, MoleculeModel> = {};

async syncStateChanges() {
const changes = Object.entries(this.currentMolecules)
.filter(([id, mol]) =>
!this.lastMoleculeStates[id] ||
this.hasMoleculeChanged(this.lastMoleculeStates[id], mol)
)
.map(([_, mol]) => mol);

if (changes.length > 0) {
await this.syncMultipleMolecules(changes);
this.lastMoleculeStates = this.currentMolecules.reduce((acc, mol) => {
acc[mol.moleculeId] = mol;
return acc;
}, {} as Record<string, MoleculeModel>);
}

五、应用场景扩展
化学方程式平衡

class EquationBalancer {
async balance(equation: string) {
// 平衡化学方程式
}

分子性质分析

class PropertyAnalyzer {
async calculateProperties(molecule: string) {
// 计算分子性质
}

实验安全评估

class SafetyEvaluator {
async checkReactionSafety(reactants: string[]) {
// 评估反应安全性
}

虚拟实验考核

class LabExam {
async evaluateExperiment(sessionId: string) {
// 评估实验操作
}

本系统充分利用HarmonyOS分布式能力，实现了：
多视角分子展示：不同设备查看分子不同角度

协同实验操作：多人同时操作同一分子结构

分布式反应计算：加速复杂反应模拟

实验过程追溯：完整记录实验操作历史