摘要:
There is disclosed a power source system capable of lengthening life and realizing a highly efficient operation while meeting user's needs. The power source system includes a fuel cell which generates power by an electrochemical reaction between a fuel and an oxidizing agent, and a secondary battery which is charged and discharged, wherein the secondary battery is charged by the fuel cell, and the power is taken from the secondary battery. The power source system further comprises a charge control unit which charges the secondary battery with the power generated by the fuel cell, and this charge control unit has a function of switching a mode to charge the secondary battery by the fuel cell in accordance with a frequency with which the power is taken from the secondary battery.
摘要:
A heart beat/respiration measuring device comprising a sheet-like capacitance-type pressure sensor adapted to be pressed against the human body, and a measuring circuit for measuring a heart rate and/or respiration rate from the output of the sensor. The capacitance-type pressure sensor includes a sheet-like dielectric body elastically deformable in all directions and a pair of conductive clothes with stretchability disposed on opposite sides of the dielectric body. The measuring circuit comprises a resonant circuit wherein the capacitance-type pressure sensor serves as an oscillation capacitor, and a calculation processing circuit for detecting variations in the oscillation frequency of the resonant circuit and calculating the heart rate and/or respiration rate based on the frequency component or components of heart beats and/or respiration included in the variations.
摘要:
A heart beat/respiration measuring device comprising a sensor adapted to be pressed against the human body, and a measuring circuit for measuring heart beats and respiration from the output of the sensor. The sensor includes a coil member elastically deformable when subjected to pressure by being pressed against the human body. The measuring circuit comprises an LC oscillation circuit wherein an inductance component and a capacitance component of the coil member serve respectively as a coil L and a capacitor C for oscillation, and a calculation processing circuit for detecting variations in the oscillation frequency of the LC oscillation circuit and calculations of a cardiac cycle, heart rate, respiratory cycle and respiration rate based on the frequency components of heart beats and respiration are included in the variations.
摘要:
A fuel cell stack has a built-in sensor MEA including: a sensor ion exchange membrane; an anode to which part of fuel supplied to the fuel cell stack flows in, the anode being arranged on one side of the sensor ion exchange membrane; and a cathode from which the part of the fuel supplied to the fuel cell stack flows out, the cathode being arranged on the other side of the sensor ion exchange membrane. An external power supply applies a predetermined potential difference to between the anode and the cathode. A current occurring from electrolysis of the fuel is measured by using an ammeter.
摘要:
There is disclosed a power source system capable of lengthening life and realizing a highly efficient operation while meeting user's needs. The power source system includes a fuel cell which generates power by an electrochemical reaction between a fuel and an oxidizing agent, and a secondary battery which is charged and discharged, wherein the secondary battery is charged by the fuel cell, and the power is taken from the secondary battery. The power source system further comprises a charge control unit which charges the secondary battery with the power generated by the fuel cell, and this charge control unit has a function of switching a mode to charge the secondary battery by the fuel cell in accordance with a frequency with which the power is taken from the secondary battery.
摘要:
Corrosion of a metal portion such as a pipe connected to a fuel cell stack is suppressed. The fuel cell stack has a plurality of single cells which generate electrical power using an aqueous methanol solution and air and are stacked in a vertical direction. An inlet of a fuel supply manifold for distributing the aqueous methanol solution to each cell and an outlet of a fuel discharge manifold for collecting the fuel discharged from the single cells are provided in a common conductive end plate. Hence, when the discharge fuel discharged from the fuel cell stack is circulated and resupplied to the stack, the potential of the discharged fuel becomes equal to that of the liquid fuel to be supplied to the stack, whereby the corrosion of the metal portion such as a pipe, a tank, a pump, or a heat exchanger is suppressed.
摘要:
An object of the present invention is to provide a sleep state estimation device capable of estimating a sleep state (deep sleep, light sleep) in real time with relative simplicity. Voltage variations resulting from human respiratory movement are measured for each given period to calculate from the measurement results positive voltage peak values and time intervals between adjacent peaks. The obtained peak values and peak intervals are used to calculate a mean peak interval value A, a coefficient of variation B based on dispersion of the peak intervals, and a coefficient of variation C based on the peak values. The sleep state in this period is estimated from the calculation results. More specifically, referring to FIG. 5, the sleep state is estimated as a “wakeful state” or a “hypnagogic state” by checking whether the mean value A is larger or smaller than a threshold a and whether the coefficient of variation C is larger or smaller than a threshold c (S105) whereas the sleep state is estimated as the “hypnagogic state”, “light sleep” or “deep sleep” by checking whether the coefficient of variation B is larger or smaller than a threshold b and whether the coefficient of variation C is larger or smaller than the threshold c (S109, S113, S116, S117).
摘要:
A fuel cell system includes: a fuel cell; a fuel tank provided opposite to the fuel cell and adapted to contain hydrogen absorbing alloy; and a supply channel adapted to supply hydrogen discharged from the hydrogen absorbing alloy to the fuel cell. The fuel cartridge is provided with a discharging unit adapted to discharge hydrogen from the hydrogen absorbing alloy to the supply channel. The discharging unit is provided opposite to the center of the fuel cell.
摘要:
A fuel cell system includes: a fuel cell which generates electricity using hydrogen and oxygen; a hydrogen storage which stores hydrogen supplied to the fuel cell and which has a supply port connectable to a hydrogen supply unit for supplying hydrogen from outside the fuel cell system; a detector which detects a leakage of the hydrogen from the hydrogen storage; and a connection controller which regulates connection of the hydrogen supply unit to the supply port when the leakage of the hydrogen is detected by the detector.
摘要:
A mixture ratio detecting apparatus comprises: a light source which emits light including light of an infrared region; a first light detecting unit which detects the light of the infrared region from the light source; a second light detecting unit which detects light of a region having a range different from that of the first light detecting unit; and a control unit which outputs a signal pertaining to a mixture ratio based on signals from the first light detecting unit and the second light detecting unit, and controls the light source, the first light detecting unit, and the second light detecting unit.