The Living Environments Lab is part of the Human-Computer Interaction Institute at Carnegie Mellon University.
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| - | <h3><P>Pilot Deployment in Public Spaces</h3></p> | + | <h3>Pilot Deployment in Public Spaces</h3> |
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| To evaluate our preliminary sensor and display design as a persuasive technology for water conservation, we conducted a pilot study targeting several faucets in two public bathrooms (men’s and women’s) as well as one of several shared showers in a female dormitory on a college campus. We chose these locations because they offer unique opportunities for water reflection and awareness: washing hands and showering position people as a “captive audience”. | To evaluate our preliminary sensor and display design as a persuasive technology for water conservation, we conducted a pilot study targeting several faucets in two public bathrooms (men’s and women’s) as well as one of several shared showers in a female dormitory on a college campus. We chose these locations because they offer unique opportunities for water reflection and awareness: washing hands and showering position people as a “captive audience”. | ||
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| <img align="middle" src="/_media/research/waterdisp_faucet.png" /> | <img align="middle" src="/_media/research/waterdisp_faucet.png" /> | ||
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| The faucet display represents individual water use through a ‘traffic-light’ metaphor. The ambient display is green when water is first turned on, turning yellow if water remains on for more than the previously measured average duration, and red once water has been running for longer than one standard deviation above average. The color sequence culminates in a flashing red light when water is left running for significantly long periods of time (more than 2 standard deviations above average). In addition, an LED bar graph below the ambient light represents collective daily use. Each bar represents one tenth of the water consumed during the day when baseline water usage data was logged. When water is turned on, the next consecutive bar begins blinking to signal individual contribution to the total water usage. Thus, the bar graph gradually ‘fills up’ over time and resets every 24 hours. | The faucet display represents individual water use through a ‘traffic-light’ metaphor. The ambient display is green when water is first turned on, turning yellow if water remains on for more than the previously measured average duration, and red once water has been running for longer than one standard deviation above average. The color sequence culminates in a flashing red light when water is left running for significantly long periods of time (more than 2 standard deviations above average). In addition, an LED bar graph below the ambient light represents collective daily use. Each bar represents one tenth of the water consumed during the day when baseline water usage data was logged. When water is turned on, the next consecutive bar begins blinking to signal individual contribution to the total water usage. Thus, the bar graph gradually ‘fills up’ over time and resets every 24 hours. | ||
| </p> | </p> | ||
| - | <h3><P>Water Usage in Private Homes</h3></p> | + | <h3>Water Usage in Private Homes</h3> |
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| Four sensors were deployed in three private apartments, each inhabited by two people, with two of the sensors placed in separate bathrooms of the same household. In the first phase of the study, sensors were installed without any visualization to log baseline shower usage. Participants were also given a preliminary questionnaire regarding their routine water conservation patterns and awareness of water-related issues. During the second phase, one of the two displays (ambient or numeric, see below) was installed to show participants’ water usage. Lastly, in the final phase, the displays were switched, with display order counterbalanced across participants. | Four sensors were deployed in three private apartments, each inhabited by two people, with two of the sensors placed in separate bathrooms of the same household. In the first phase of the study, sensors were installed without any visualization to log baseline shower usage. Participants were also given a preliminary questionnaire regarding their routine water conservation patterns and awareness of water-related issues. During the second phase, one of the two displays (ambient or numeric, see below) was installed to show participants’ water usage. Lastly, in the final phase, the displays were switched, with display order counterbalanced across participants. | ||
| - | </p><p> | + | <p> |
| Two styles of display were developed to visualize water usage in the shower. The numeric display presents current usage to the nearest tenth of a gallon. When the shower is turned on, this number increases based on water flow rate. In addition, the average usage, which was computed during the initial (logging) phase of the study. | Two styles of display were developed to visualize water usage in the shower. The numeric display presents current usage to the nearest tenth of a gallon. When the shower is turned on, this number increases based on water flow rate. In addition, the average usage, which was computed during the initial (logging) phase of the study. | ||
| </p> | </p> | ||
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