Development of a Novel Acoustic Indoor Positioning System

Takemetuit （TMTI）是一家加拿大公司，为零售业开发声学室内定位系统（IPS），允许购物者和员工通过用户手机或平板电脑上的应用程序搜索、绘制地图并找到特定的产品。该技术利用声波传播的已知特性，使智能手机能够在受控环境中确定其位置。使用200Hz至20KHz范围内的可听声学频率，使应用程序可以在没有专门硬件的普通智能手机麦克风上有效运行。该系统的成功概念验证已在NSERC Engage资助项目中实施，SAIT与TMTI一起参与了该项目。本研究的重点是将原型系统的当前状态提升到生产原型的水平，在生产原型中，低级软件例程被最终确定并融入到一个分层的软件结构中，形成一个完整的原型用户应用程序。该项目将是TMTI在加拿大为零售商开发领先的IPS系统的关键一步，该系统将有效提高员工生产率，降低与库存管理相关的成本。该系统还将帮助顾客更容易地找到他们想要的商品，从而提高购物的便利性。

Takemetuit (TMTI) is a Canadian company developing acoustic indoor positioning systems (IPS) for the retail industry that allow shoppers and employees to search, map and find specific products by an application on the user's cellphone or tablet. The technology exploits the known properties of acoustic wave propagation to enable a smartphone to determine its location within a controlled environment. Audible acoustic frequencies in the range of 200Hz to 20KHz are employed to allow the application to function effectively on a regular smartphone microphone without specialized hardware. A successful proof of concept for the system has been implemented in an NSERC Engage grant project in which SAIT participated with TMTI. The proposed research is focused on bringing the current state of the prototype system to the level of production prototype in which low level software routines are finalized and fitted into a hierarchical software structure to form a complete prototype user application. The project will be a critical step in TMTI's development of a leading IPS in Canada for retailers that will effectively improve employee productivity and reduce costs associated with inventory management. The IPS will also enhance shopping convenience for customers by helping them to easily find the items they seek.