Portable Slip-Testing Device for Measuring Shoe-Floor Coefficient of Friction

项目总结： 滑倒和跌倒事故是职业伤害的主要来源，而且还在不断增加。增加可用的 鞋与地板之间的摩擦系数(ACOF)是一种有效的减少滑动的方法 风险。对便携式、经济实惠的鞋底ACOF测试设备的需求非常大，这种设备适用于 预测滑倒的风险。满足这一需求可能会增加现场严格防滑测试的使用，定制 针对特定工作场所的鞋类计划，并选择最有效的鞋类或地板干预措施。 这项SBIR第二阶段(R44)研究的总体目标是开发一种便携式ACOF测试设备 这预测了一个人是否有可能在敏感度和特异度上滑倒。这种方法的可行性是 由初步开发的生物保真滑移测试设备支持。我们采取的方法的潜力 提高滑移测试的有效性得到了初步数据的支持，这些数据发现，目前的测试方法确实 没有反映滑动的运动学，鞋底测试条件对测试者的能力至关重要 来预测失足。拟议的研究将以四个目标完成：目标1：确定一套测试 最能预测滑动事件的条件(力、滑动速度和鞋底角度分布)；目标2：制定一种 轻便、廉价和生物保真的滑动测试仪；目标3：量化重复性和重复性 使用实验室间研究的设备；目标4：验证便携式测试设备的预测能力 滑落的事件。AIM 1将使用之前收集的人类滑移数据和生物保真滑移测试仪来识别 测试最能预测滑行的运动学和动力学。AIM 2将创造一种使用运动学的便携式设备 联动系统用步进电机实现目标1中确定的测试条件并进行计算 ACOF基于用称重传感器测量的力。目标2还将包括一个假设(H2.1)，即 开发的设备将产生与生物保真滑动测试设备很好相关的ACOF值 在第一阶段开发。AIM 3将进行多站点实验室间研究，以量化 跨运营商和设备的设备和再现性。目标3将包括一个假设(H3.1)，即不同 在ACOF中，不会在操作员和设备之间观察到这些值。目标4将量化该装置的有效性 用于根据与该设备收集的ACOF数据前瞻性地预测人类滑倒倾向。目标4 包括一个假设(H4.1)，即该设备将预测滑落风险。这项拟议的研究有望 带来一种最先进的设备，它将促进干预措施，减少因滑倒而造成的意外伤害。 将这项创新商业化将使CrossRoads Consulting，LLC为这两家公司开拓新市场 实验室和现场滑移测试，目标是安全和职业健康顾问，较小的鞋子和地板 制造商，以及研究界。因此，十字路口咨询有限责任公司预计将 通过产品销售和服务协议扩大规模和收入。

Project Summary: Slip and fall accidents are a major and growing source of occupational injuries. Increasing the available coefficient of friction (ACOF) between the shoe and floor surface is an effective method for reducing slipping risk. A significant need exists for portable, cost-effective shoe-floor ACOF testing equipment that is valid for predicting slip risk. Filling this need is likely to increase the use of rigorous slip-testing in the field, customizing footwear programs to a specific workplace, and selecting the most effective footwear or flooring intervention. The overall objective of this SBIR Phase II (R44) research study is to develop a portable ACOF testing device that predicts whether a person is likely to slip with sensitivity and specificity. The feasibility of this approach is supported by preliminary development of a biofidelic slip-testing device. The potential for our approach to improve the validity of slip-testing is supported by preliminary data that found that current testing methods do not reflect the kinematics of slipping and that the under-shoe testing condition are critical to the tester's ability to predict slips. The proposed research will be accomplished with four aims: Aim 1: Identify a set of testing conditions (force, sliding speed and shoe-floor angle profiles) that best predict slip events; Aim 2: Develop a slip-tester that is portable, inexpensive and biofidelic; Aim 3: Quantify reproducibility and repeatability of the device using an interlaboratory study; and Aim 4: Validate the ability of the portable testing device to predict slipping events. Aim 1 will use previously-collected human slipping data and the biofidelic slip-tester to identify testing kinematics and kinetics that best predict slips. Aim 2 will create a portable device that uses kinematic linkage systems to achieve the testing conditions identified in Aim 1 using stepper motors and calculates ACOF based on forces measured with a load cell. Aim 2 will also include a hypothesis (H2.1) that the developed device will yield ACOF values that are well correlated with the biofidelic slip-testing device developed in Phase 1. Aim 3 will perform a multiple site interlaboratory study to quantify repeatability of the device and reproducibility across operators and devices. Aim 3 will include a hypothesis (H3.1) that differences in ACOF values will not be observed across operators and devices. Aim 4 will quantify the validity of the device for prospectively predicting human slip propensity based on ACOF data collected with the device. Aim 4 includes a hypothesis (H4.1) that the device will predict slipping risk. This proposed research is expected to lead to a state-of-the art device that will promote interventions that reduce accidental injuries due to slipping. Commercializing this innovation will position Crossroads Consulting, LLC to reach new markets for both laboratory and field slip-testing, targeting safety and occupational health consultants, smaller shoe and flooring manufactures, as well as the research community. As a result, Crossroads Consulting, LLC is anticipated to grow in size and revenues through product sales and service agreements.!