太陽電池駆動PM_2.5サンプラーの開発

抄録

PM_2.5 samplings are difficult on a site where no electricity is available because almost all commercially available samplers are operated by AC100V. We developed a solar powered PM_2.5 sampler consisting of solar panels, a charge/load controller, a battery, and a DC pump. PM_2.5 concentrations obtained using the sampler agreed well with those measured by a continuous PM_2.5 monitor utilizing a combination of beta attenuation and light scattering technology. We found that the pump should be stopped when the battery voltage is lower than a certain level in order to maintain the air flow rate during the sampling period. We simulated the remaining battery power taking into account the number of solar panels, the energy consumption of a pump, and other parameters. Several suggestions were made for the readers who may want to customize our device.