Callida Energy Call for Innovation

DISTRIBUTED TEMPERATURE SENSING FOR LOCALIZED COMFORT MEASUREMENT

Background

Heating and cooling in commercial buildings is typically driven by a very limited number of thermostats. However, the temperature sensed at the thermostat often does not represent the specific air temperatures at the different locations where people sit across the HVAC zone controlled by that thermostat. Office workers and facilities managers already use devices throughout the day – such as smartphones and laptops – with built-in hardware for temperature measurement that could be augmented to measure space temperature at each person’s location. Space temperature is not the only attribute of perceived occupant comfort, humidity and other factors also affect occupant comfort thermal perceptions. But space temperature is the primary component and the one on which commercial building energy management systems (BMS) typically regulate temperature in the zone.

The Challenge

Goal: Develop methods for distributed temperature sensing in office buildings utilizing existing hardware (i.e. smartphones and laptops) to measure air temperatures at each occupant’s location within an office or workspace. The solution should interface with the Callida Energy Occupant App solution deployed on smartphones.

Approach: Accepted solutions should be based on smartphones or laptops to measure workplace space air temperatures. The submitter is requested to estimate the accuracy of the proposed solution and detail the number of data points and device locations required to achieve highly accurate space temperature measurements. A strong solution would have a high accuracy with a minimum number of data points and still have adequate accuracy for a single person office zone in which there is only one data point on which to base the HVAC zone air temperature measurement.

In addition, the recommended solution should address the following:

  • Both mobile and stationary devices
  • Devices inside pockets/briefcases/purses/knapsacks vs. on the desktop
  • Device orientation
  • Devices charging and not charging

Target Accuracy: +/- 1 F of the local air temperature in a space (i.e. HVAC zone/workplace). The submitter should address potential calibration issues. An accuracy of +/-1 F generally results in a change of less than 10% on the Predicted Percentage of Dissatisfied (PPD) as defined in the Fanger comfort model.

Internal sensors available for use in this solution include:

  • Smartphone: thermistors (i.e. the internal battery temperature sensor), accelerometers, light sensors, gyroscopes
  • Laptop: internal temperature sensors can include battery, CPU, fan, hard drive, video card and other sensors

Bonus Features: A solution that encompasses both smartphones and laptops.

This JUMP Call for Innovation requires only a written proposal. Review and consideration of ideas does not require submitters to provide Intellectual Property (IP) rights. If you are concerned about protecting your IP, choose the “Invisible to other Innovators” option when submitting your idea. That will enable the judges from reviewing your ideas but will not show it on the JUMP website.

The Award

A cash award of $3,000 will be sponsored by Callida Energy for the top selected technology submission. Depending on the needs identified, the idea submitter will also be invited to discuss future internship or mentorship opportunity with Callida Energy, and LBNL technical experts.2

Successful JUMP winners may also elect to submit a "Request for Assistance (RFA)" for Round 3 of subsequent Rounds of the DOE Lab Impact Small Business Vouchers (SBV) Pilot Small Business Voucher. Successful SBV requests may be provided up to $300k in the form of in-kind technical support for prototype development, testing, and other problem statements facing small businesses in the clean energy innovation space.

Additionally, Successful JUMP participants looking for funding and incubation support may be invited to participate in the prestigious Clean Tech Open Accelerator Program based on technical and market merit.

Idea Submission Deadline

November 11, 2016 at 11:59 PM Pacific Time

Call: Callida Energy Call for Innovation

Laptop and cell phones with temperature and humidity sensor

Problem statement: In commercial building, monitoring and change of local temperature/humidity is needed for personal comfortness and energy saving. The challenge is how to test the local temperature and humidity. Few apps such as whether signal, cooler master and CPU-Z enable cell phone to be a thermometer, but the measured temperature is not accurate depending on temperature of processor and many other componentsin ...more »

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Call: Callida Energy Call for Innovation

Personalized Comfort model based on wearable device data

This idea may not comply with all the requirements listed in the idea announcement, but we think it may provide an alternative solution to estimate occupant comfort level in building. Moreover, similar approach is submitted in different call, but we got a feedback that we may consider this idea here as well!. The idea utilizes the emerging technology of wearable devices (watches, fitness band, .. ). A user interface ...more »

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Call: Callida Energy Call for Innovation

Temperature sensing system

In commercial building, sense local the temperature and occupancy and provide a mapping. The local air condition temperature change and on/off are modulated depending on the people locations and comfort temperature/humidity.

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3 votes
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Call: Callida Energy Call for Innovation

Personal Comfort Zone - An IOT sensor tags solution

Abstract Controlling temperatures in buildings is often times inefficient and very costly, both in terms of millions of dollars wasted and in energy usage. Inadequate temperature inside buildings is a cause of constant discomfort for the people living and working in them. In offices, this results in people trying to minimize the time spent in the buildings due to extreme discomfort., causing sub-optimal working conditions ...more »

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Call: Callida Energy Call for Innovation

Using battery sensor temperature to detect indoor temperature

The core idea is to use battery temperature sensor of a smart devise (i.e. laptop, smart phone, …) to infer indoor temperature while filtering data noise. The device condition, location and information inferred by analyzing data captured from the device other sensors such as accelerometers, light sensors, gyroscopes, GPS and CPU and the device running process and used resources will be used in the noise removal. In study ...more »

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Call: Callida Energy Call for Innovation

Building Heating and Cooling Optimization

There are more common devices other then laptops and smart phones that can be used to solve the issue of distributed temperature sensing for localized confront measurement. Many digital thermometers display both the inside and outside temperature and humidity by employing an outside sensor that collects temperature and humidity data which is transmitted to the main display device using Bluetooth. These outside sensors ...more »

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Call: Callida Energy Call for Innovation

Think more out of the box

Limiting to cellphone and laptop presents a problem with always knowing the location and the state of those devices. Most modern offices still include VOIP phone systems - devices that have computing power built into them... and likely already have temperature sensing ability. Examples of smartphone temp accuracy problems: 1. smartphone in purse or backpack 2. smartphone in pocket of clothing or stuck inside garment ...more »

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Call: Callida Energy Call for Innovation

Office dolphin: Sound based temperature sensing with smartphones

- Team Dolphin: Kamaria Massey, Michael Mc Carthy, Sunanda Prabhu-Gaunkar - Problem Statement: Office spaces are often non-uniformly heated/cooled making occupants feel uncomfortable and unable to control their surroundings. Commonly available technology in office spaces such as the smartphone are unable to accurately track the temperature due to a lack of accurate temperature sensors. - Solution: Intuition: The ...more »

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