公开(公告)号：US10883947B2

公开(公告)日：2021-01-05

申请号：US15800788

申请日：2017-11-01

Applicant: Palo Alto Research Center Incorporated

Inventor： Jianer Bao ,  Clinton Smith ,  Eric Cocker ,  David Schwartz

IPC: G01N25/48 ,  G01N33/00 ,  G01K7/22 ,  G01K3/14

Abstract: A gas monitor apparatus includes a sorbent material that adsorbs a target gas based on a concentration of the target gas in a monitored environment and a reference material that does not respond to the target gas. The gas monitor also includes a first thermistor disposed within the sorbent material and a second thermistor disposed within the reference material, the first thermistor to provide a first indication of a first temperature of the sorbent material and the second thermistor to provide a second indication of a second temperature of the reference material. A processing device determines a concentration of the target gas based at least in part on a differential measurement between the first temperature and the second temperature.

公开(公告)号：US20190128827A1

公开(公告)日：2019-05-02

申请号：US15800788

申请日：2017-11-01

Applicant: Palo Alto Research Center Incorporated

Inventor： Jianer Bao ,  Clinton Smith ,  Eric Cocker ,  David Schwartz

IPC: G01N25/48 ,  G01K7/22

Abstract: A gas monitor apparatus includes a sorbent material that adsorbs a target gas based on a concentration of the target gas in a monitored environment and a reference material that does not respond to the target gas. The gas monitor also includes a first thermistor disposed within the sorbent material and a second thermistor disposed within the reference material, the first thermistor to provide a first indication of a first temperature of the sorbent material and the second thermistor to provide a second indication of a second temperature of the reference material. A processing device determines a concentration of the target gas based at least in part on a differential measurement between the first temperature and the second temperature.

公开(公告)号：US20240019156A1

公开(公告)日：2024-01-18

申请号：US17865961

申请日：2022-07-15

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Saman Mostafavi ,  Harish Doddi ,  Yu-Wen Lin ,  David Schwartz

IPC: F24F11/64 ,  F24F11/46 ,  G05B13/04

CPC classification number: F24F11/64 ,  F24F11/46 ,  G05B13/048

Abstract: A differentiable physics model of a building is used that defines thermodynamic relationships between zones of the building and a heating, ventilation, and air-conditioning (HVAC) system. A physics-constrained, data driven model learns behaviors of controlled components of the HVAC system. For each of a series of times during online operation of the HVAC system, past state values are recorded representing a performance of the HVAC system in the building and past inputs to the HVAC system to maintain the states. The past state values and the past inputs are input into the differentiable physics model and the data driven model to: jointly update first parameters of the differentiable physics model and second parameters of the data driven model, e.g., using moving horizon estimation; and determine a current input to the controlled components, e.g., using model predictive control.

公开(公告)号：US11619601B2

公开(公告)日：2023-04-04

申请号：US17073798

申请日：2020-10-19

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Jianer Bao ,  Clinton Smith ,  Eric Cocker ,  David Schwartz

IPC: G01N25/48 ,  G01N33/00 ,  G01K7/22 ,  G01K3/14

Abstract: A gas monitor apparatus includes a sorbent material that adsorbs a target gas based on a concentration of the target gas in a monitored environment and a reference material that does not respond to the target gas. The gas monitor also includes a first thermistor disposed within the sorbent material and a second thermistor disposed within the reference material, the first thermistor to provide a first indication of a first temperature of the sorbent material and the second thermistor to provide a second indication of a second temperature of the reference material. A processing device determines a concentration of the target gas based at least in part on a differential measurement between the first temperature and the second temperature.

公开(公告)号：US20210041382A1

公开(公告)日：2021-02-11

申请号：US17073798

申请日：2020-10-19

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

Inventor： Jianer Bao ,  Clinton Smith ,  Eric Cocker ,  David Schwartz

IPC: G01N25/48 ,  G01N33/00

Abstract: A gas monitor apparatus includes a sorbent material that adsorbs a target gas based on a concentration of the target gas in a monitored environment and a reference material that does not respond to the target gas. The gas monitor also includes a first thermistor disposed within the sorbent material and a second thermistor disposed within the reference material, the first thermistor to provide a first indication of a first temperature of the sorbent material and the second thermistor to provide a second indication of a second temperature of the reference material. A processing device determines a concentration of the target gas based at least in part on a differential measurement between the first temperature and the second temperature.