公开(公告)号：US20150300892A1

公开(公告)日：2015-10-22

申请号：US14256741

申请日：2014-04-18

Applicant: NEST LABS, INC.

Inventor： Kara Malhotra ,  Yoky Matsuoka ,  Mark Malhotra ,  Allen Minich ,  Joseph Ruff

IPC: G01K13/00 ,  F24F11/00 ,  G05B15/02 ,  G01M99/00

CPC classification number: G01K13/00 ,  F24F11/30 ,  F24F11/58 ,  F24F11/62 ,  F24F11/64 ,  G01K2201/00 ,  G05D23/1917 ,  H04L12/2807

Abstract: Techniques for determining and using a thermodynamic model that characterizes a thermodynamic response of an enclosure conditioned by an HVAC system are disclosed. To determine a thermodynamic model, temperature information when the HVAC system operates in a first state may first be received. A response interval may then be determined where the response interval indicates an estimated time between when the HVAC system begins operating in the first state and when the temperature within the enclosure begins to change in a direction associated with the first state. Weighting factors corresponding to basis functions may then be determined, where the weighted basis functions characterize the temperature trajectory of the enclosure in response to the HVAC system operating in the first state. The basis functions may include a first basis function that is evaluated from a time that the HVAC system begins operating in the first state until a time when the response interval ends, and a second basis function that is evaluated beginning at the time when the response interval ends.

Abstract translation: 公开了用于确定和使用表征由HVAC系统调节的外壳的热力学响应的热力学模型的技术。 为了确定热力学模型，可以首先接收HVAC系统处于第一状态时的温度信息。 然后可以确定响应间隔，其中响应间隔指示在HVAC系统在第一状态下开始操作之间以及当机壳内的温度开始在与第一状态相关联的方向上改变时的估计时间。 然后可以确定与基础功能相对应的加权因子，其中加权基函数表征响应于处于第一状态的HVAC系统的外壳的温度轨迹。 基础功能可以包括从HVAC系统开始以第一状态开始运行直到响应间隔结束的时间来评估的第一基本功能，以及从响应间隔开始时评估的第二基本功能 结束。