Virtual Space with Scents Realized by Using Miniaturized OlfactoryDisplay and Computational Fluid Dynamics

使用小型化嗅觉显示器和计算流体动力学实现的气味虚拟空间

• 批准号: 22300073
• 负责人: NAKAMOTO Takamichi
• 金额: $ 11.9万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22300073/
• 关键词: 感性インタフェース; 人工現実感; 嗅覚ディスプレイ; 匂い近似; 要素臭; 流体シミュレータ; 風感; 温熱感; 残香; マニフォールド; ダイナミックレンジ; 水晶振動子センサ; 同時吸着法; 初期値設定問題; レーザスキャナ; 電気浸透流ポンプ; 弾性表面波; 質量分析器

We developed a miniaturized olfactory display and realize virtual space with scents. It consisted of electroosmotic pumps and a surface acoustic device. It is smaller than a credit card and can blend up to 8 odor components just in front of a user’s nose. It has little smell persistence even when a low-volatile scent is presented. Then, we studied a set of odor components to cover wide range of smells. The basis vectorswere extracted using mass-spectrum data and NMF (Nonnegative Matrix Factorization) method. We performed the experiment on odor approximation using essential oils. Approximated orange, mint and black pepper were identified with 90% probability when we used 30 odor components. Moreover, we studied the distance metric for NMF method. We found that good approximation capability over wide range of intensity was obtained when we used IS (Itakura-Saito)-divergence rather than the Euclidean distance and KL divergence.Then, we developed the method to calculate odor intensity at arbitrary position under the environment with obstacles using CFD (Computational Fluid Dynamics) method. The distribution of odor concentration was obtained using CFD method when the room geometry was measured by a laser scanner and wall-temperature distribution was measured by thermography. Furthermore, we fabricated the system to present odor and airflow simultaneously so that the impression of wind can be added. A user feels wind and odorcoming from the LCD monitor. The location of a virtual odor source can be controlled. Then, we presented odors from warm food and beverage at the conference after the introduction of a heater.

我们开发了一种微型嗅觉显示器，它由电渗泵和表面声学装置组成，它比信用卡还小，可以在用户的​​鼻子前混合多达 8 种气味成分。然后，我们研究了一组气味成分，以涵盖各种气味，并使用质谱数据和 NMF（非负）来提取基本向量。我们使用精油进行了气味近似实验，当我们使用 30 种气味成分时，我们发现近似橙子、薄荷和黑胡椒的概率为 90%。当我们使用 IS (Itakura-Saito) 散度而不是欧几里德距离和 KL 散度时，在较宽的强度范围内获得了良好的逼近能力。然后，我们开发了利用CFD（计算流体动力学）方法计算有障碍物的环境下任意位置的气味强度的方法，当通过激光扫描仪测量房间的几何形状和壁温分布时，利用CFD方法获得气味浓度的分布。此外，我们还制作了同时呈现气味和气流的系统，以便用户可以感受到来自液晶显示器的风和气味，然后，可以控制虚拟气味源的位置。在引入加热器后，我们在会议上展示了热食物和饮料的气味。

项目成果

Fragrant multimedia display system: Presenting odor distribution on display screen

香味多媒体展示系统：在显示屏上呈现气味分布

• 发表时间: 2012
• 作者: H. Matsukura;T. Yoneda;and H. Ishida
• 通讯作者: and H. Ishida

"Incorporating fluid dynamics considerations into olfactory displays" in Human Olfactory Displays and Interfaces: Odor Sensing and Presentation

《人类嗅觉显示和界面：气味感知和呈现》中的“将流体动力学考虑因素纳入嗅觉显示”

• 发表时间: 2012
• 作者: 高島舞;望月佳彦;大竹尚登;H. Matsukura and H. Ishida
• 通讯作者: H. Matsukura and H. Ishida

Odor recorder using achemical sensor array

使用化学传感器阵列的气味记录仪

• 发表时间: 2011
• 作者: Jun-ichi Inoue;Yoshiyuki Kabashima;Kazuyuki Tanaka and Toshiyuki Tanaka (eds);T.Nakamoto
• 通讯作者: T.Nakamoto

Odor sensing, recording and olfactory display

气味传感、记录和嗅觉显示

• 发表时间: 2011
• 作者: 林晋;久木田水生;大浦真;Takamichi Nakamoto
• 通讯作者: Takamichi Nakamoto

Olfactory Display Using a Miniaturized Pump and a SAW Atomizer for Presenting Low-volatile Scents

使用微型泵和 SAW 雾化器呈现低挥发性气味的嗅觉显示

• 发表时间: 2011
• 作者: Yossiri Ariyakul;Takamichi Nakamoto
• 通讯作者: Takamichi Nakamoto