Bioelectric Potential Characteristic of Potted Plant for Temperature Change in a Residential Space

Shimbo, Tatsuya; Oyabu, Takashi; Hasegawa, Yuki; Takenaka, Kozaburo

doi:10.1541/ieejsmas.125.253

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…The relationship between bioelectric potential and the irradiation light was examined in this study. The potential also changes due to environmental factors such as temperature, humidity, and atmospheric pressure [22]. It varies, depending on the presence or absence of an air pollutant and an irradiation light.…”

Section: Discussionmentioning

confidence: 99%

Purification capability of broccoli to gaseous ethyl alcohol using an LED lighting system

Oyabu

2013

Environmental Health Risk VII

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Plants have various kinds of functions. One of them is a purifying function to gaseous contaminants including carbon dioxide. It is a noticeable function from the standpoint of protection of the global environment. Plants can purify not only carbon dioxide but also nitrogen oxide and sulfur oxide, and the chemicals are used as a source of energy after having been broken down in the plants. In addition, plants put out a bioelectric potential which changes depending on the environment and growing conditions. In this study, the relationship between the potential and purification capability of a plant is examined using an LED lighting system. Broccoli is adopted as a subjective plant and the experiment is carried out with five kinds of LED light frequencies including darkness. The summation value is adopted as the potential value, namely the total amount of the bioelectric potential for a minute (v m1). As a result, the capability increases and the potential also becomes greater in blue light. A positive correlation is recognized in the relationship between the potential and the capability. A specific gaseous chemical could be purified in a particular light-frequency by applying the results of this study.

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Section: Discussionmentioning

confidence: 99%

Purification capability of broccoli to gaseous ethyl alcohol using an LED lighting system

Oyabu

2013

Environmental Health Risk VII

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“…The same feature is obtained at a temperature lower than 10°C. (7) The characteristics for temperature, humidity, and atmospheric pressure in the experiment are also shown in Fig. 5.…”

Section: Original Data and The Summation Characteristicmentioning

confidence: 99%

Bioelectric Potential of Pothos under Light-Emitting Diode

Shibata¹

2010

Sensors and Materials

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Plant bioelectric potential changes according to environmental factors such as temperature, humidity, light intensity, and atmospheric pressure. Light is the fundamental factor for plant photosynthesis. In this paper, the relationship between bioelectric potential and the wavelength of emitted light (light-emitting diodes (LEDs): blue, green, red, and white) was examined. The bioelectric potential in darkness was adopted as a control and it was compared with those at various wavelengths. The bioelectric potential was measured as a function of time. Data were recorded every 0.1 s and summed over 1 h. The summation value was adopted as a representative value. The correlation between the bioelectric potential under light emission and that of the control was determined. The correlation coefficient reached a maximum as the bioelectric potential under emission was shifted from 1-3 h of light exposure. The coefficient became lower as the wavelength of emitted light became higher. A coefficient of 0.84 under red light (660 nm) at a shifted time of 3 h was obtained, and 0.7 for green light (525 nm) at a shifted time of 1 h, 0.5 for blue (475 nm) without a shift. A coefficient of over 0.5 was obtained under white light at a shifted time of 1-2 h. The obtained result contributes to our understanding of plant physiology. In addition, it contributes to the development of a plant environmental sensor and a plant factory.

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“…However, the bioelectric potential of a plant is affected by the surrounding environment; for example, it varies with the concentration of formaldehyde in the air [5,6], air humidity, air temperature, and the soil moisture content [7]. Moreover, the bioelectric potentials of plants have been found to change with growing conditions, such as light levels and wind [8][9][10][11]. We anticipate that these properties can be exploited to produce a sensor and we are investigating measurement techniques that use plants.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Surrounding Environment′s Influence on Gait Sensing Using a Plant as a Sensor

Tamura

Yamamoto

2009

Journal of Sensors

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Some animals and plants function as bioantennas in that changes in their surrounding environment produce variations in their bioelectric potentials. While the bioelectric potential is affected by living activities of the plant, it has been observed that the bioelectric potential can be reduced using plants. Thus, the influence of the life activity of a plant on the reception signal must be accounted for when a plant is used as a sensor. In this study, we produced an environmental change near a foliage plant growing in an indoor environment and examined the directivity of the plant's sensing ability. The sensitivity of the plant was a roughly circular area centered on the location of the plant. We also investigated the influence of the number of leaves on the plant on its sensing ability and found that it decreased with a reduction in the number of leaves. In addition, we monitored the effect of a person walking on the spot near the plant on the bioelectric potential of the plant. Six subjects stepped on the spot 50 cm from a rubber tree and we measured the variation in the bioelectric potential of the tree produced by this stepping motion. The results confirmed that stepping motion produces a measurable response in the bioelectric potential of a plant and that this response varies in synchrony with the subject's stepping rate. Moreover, by conducting principal component analysis using the peak value of the spectrum characteristics of the measured bioelectric potential, cumulative proportion was found to reach nearly 97% at low-frequency components up to the fifth peak.

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Bioelectric Potential Characteristic of Potted Plant for Temperature Change in a Residential Space

Cited by 9 publications

References 3 publications

Purification capability of broccoli to gaseous ethyl alcohol using an LED lighting system

Purification capability of broccoli to gaseous ethyl alcohol using an LED lighting system

Bioelectric Potential of Pothos under Light-Emitting Diode

Investigation of the Surrounding Environment′s Influence on Gait Sensing Using a Plant as a Sensor

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