Abstract: A sensing system contains a vibration device attached to a stem of an agricultural crop for applying vibration to the agricultural crop, at least one sensor attached to the stem of the agricultural crop for sensing vibration of the agricultural crop caused by the vibration applied to the agricultural product from the vibration device to transmit vibration information relate to the vibration of the agricultural crop and a computing device for identifying one local maximum value among a plurality of local maximum values in a frequency spectrum obtained from the vibration information received from the at least one sensor as a resonance frequency of the vibration of the agricultural crop to determine a growth degree of a fruit of the agricultural crop based on the identified resonance frequency.

Abstract: A system for monitoring fruit growth including: a vibration exciter that imparts predetermined vibration to a stem or a branch between a fruit and a stalk growing on a plant; a vibration sensor that detects vibration of the stem or the branch caused by the vibration imparted by the vibration exciter; and a detector that detects a weight or weight change of the fruit based on a frequency of the vibration detected by the vibration sensor.

Abstract: A sensing system contains a vibration device attached to a stem of an agricultural crop for applying vibration to the agricultural crop, at least one sensor attached to the stem of the agricultural crop for sensing vibration of the agricultural crop caused by the vibration applied to the agricultural product from the vibration device to transmit vibration information relate to the vibration of the agricultural crop and a computing device for identifying one local maximum value among a plurality of local maximum values in a frequency spectrum obtained from the vibration information received from the at least one sensor as a resonance frequency of the vibration of the agricultural crop to determine a growth degree of a fruit of the agricultural crop based on the identified resonance frequency

Abstract: A system for monitoring fruit growth including: a vibration exciter that imparts predetermined vibration to a stem or a branch between a fruit and a stalk growing on a plant; a vibration sensor that detects vibration of the stem or the branch caused by the vibration imparted by the vibration exciter; and a detector that detects a weight or weight change of the fruit based on a frequency of the vibration detected by the vibration sensor.

Abstract: In a cogeneration system 1 configured to supply electricity and heat with a gas engine 5 as an engine and including a thermally driven heat pump 3 and a thermally-driven-heat-pump assisted electric heat pump 4 as an electrically driven heat pump, a controller 44 as an operation controller configured to perform a power control in such a manner that generated electricity e of the gas engine 5 becomes equal to balance electricity eb as the sum of required electricity De2 for driving a thermally-driven-heat-pump assisted electrically driven heat pump 4 configured to compensate heat demand Dh of the cogeneration system 1 and electricity demand De1 of the cogeneration system 1, is provided.

Abstract: An engine ignition system and the like are provided, which reduce a required voltage and improve an ignition performance without any special electrical configuration. An ignition system is configured so that: to an auxiliary electrode is applied a voltage that is not more than a voltage applied between a center electrode and a ground electrode and that generates no spark discharge; the auxiliary electrode is positioned so that an electric field Ef2 between the auxiliary electrode and the ground electrode or an electric field Ef3 between the auxiliary electrode and the center electrode, which is generated by the applied voltage, is spread over the gap. A time for applying the voltage to the auxiliary electrode is controlled to include a time for applying the voltage between the center electrode and the ground electrode.

Abstract: An engine ignition system and the like are provided, which reduce a required voltage and improve an ignition performance without any special electrical configuration. An ignition system 3 is configured so that: to an auxiliary electrode 13 is applied a voltage that is not more than a voltage applied between a center electrode 11 and a ground electrode 12 and that generates no spark discharge; the auxiliary electrode 13 is positioned so that an electric field Ef2 between the auxiliary electrode 13 and the ground electrode 12 or an electric field Ef3 between the auxiliary electrode 13 and the center electrode 11, which is generated by the applied voltage, is spread over the gap. A time for applying the voltage to the auxiliary electrode 13 is controlled to include a time for applying the voltage between the center electrode 11 and the ground electrode 12.

Abstract: In a cogeneration system 1 configured to supply electricity and heat with a gas engine 5 as an engine and including a thermally driven heat pump 3 and a thermally-driven-heat-pump assisted electric heat pump 4 as an electrically driven heat pump, a controller 44 as an operation controller configured to perform a power control in such a manner that generated electricity e of the gas engine 5 becomes equal to balance electricity eb as the sum of required electricity De2 for driving a thermally-driven-heat-pump assisted electrically driven heat pump 4 configured to compensate heat demand Dh of the cogeneration system 1 and electricity demand De1 of the cogeneration system 1, is provided.

Abstract: A spark ignition engine capable of operating even with a leaner air-fuel mixture to achieve stable ignition and combustion performance. An ignition plug is fitted to a cylinder head through a sleeve, and the ignition electrode of the ignition plug is disposed in a cylinder, facing a single chamber type combustion chamber. The sleeve is formed in a blind cylindrical shape, an auxiliary chamber storing the ignition electrodes of the ignition plug is formed at the bottom part of the sleeve, and a nozzle hole allowing the auxiliary chamber to communicate with the combustion chamber is formed in the bottom part of the sleeve. The bottom part of the sleeve is projected from an explosion surface to the inside of the combustion chamber and the position of ignition by the ignition electrode is set near the explosion surface.

Abstract: A spark ignition engine capable of operating even with a leaner air-fuel mixture to achieve stable ignition and combustion performance. An ignition plug (7) is fitted to a cylinder head (1) through a sleeve (6), and the ignition electrode (7a) of the ignition plug (7) is disposed in a cylinder (2), facing a single chamber type combustion chamber (5). The sleeve (6) is formed in a blind cylindrical shape, an auxiliary chamber (10) storing the ignition electrodes (7a, 7b) of the ignition plug (7) is formed at the bottom part of the sleeve (6), and a nozzle hole (6a) allowing the auxiliary chamber (10) to communicate with the combustion chamber (5) is formed in the bottom part of the sleeve. The bottom part of the sleeve (6) is projected from an explosion surface (1a) to the inside of the combustion chamber (5) and the position (12) of ignition by the ignition electrode (7a) is set near the explosion surface (1a).

Abstract: A biological data observation apparatus includes a measuring unit including at least a photoelectric sensor including a light emitting element for emitting light with a predetermined wavelength onto a blood vessel of a subject and a light detecting element for detecting, as a photoelectric volume pulse wave, a change in an amount of transmitted or reflected light resulting from the light emitted from the light emitting section, a storage area in which pressure conversion data correlating a pulse wave area and a blood pressure value in order that the pulse wave area may be converted to the blood pressure value as an absolute value, the pulse wave area being obtained by integrating a wave form of the photoelectric capacity pulse wave per heartbeat, an operational unit calculating the pulse wave area on the basis of the photoelectric volume pulse wave obtained from the subject and further calculating the blood pressure value of the subject on the basis of the calculated pulse wave area and the blood pressure con

Abstract: A biological data observation apparatus includes a measuring unit including at least a photoelectric sensor including a light emitting element for emitting light with a predetermined wavelength onto a blood vessel of a subject and a light detecting element for detecting, as a photoelectric volume pulse wave, a change in an amount of transmitted or reflected light resulting from the light emitted from the light emitting section, a storage area in which pressure conversion data correlating a pulse wave area and a blood pressure value in order that the pulse wave area may be converted to the blood pressure value as an absolute value, the pulse wave area being obtained by integrating a wave form of the photoelectric capacity pulse wave per heartbeat, an operational unit calculating the pulse wave area on the basis of the photoelectric volume pulse wave obtained from the subject and further calculating the blood pressure value of the subject on the basis of the calculated pulse wave area and the blood pressure con

Abstract: A maximum blood pressure and a minimum blood pressure are first measured using an oscillometric method. Pulse waves of a vessel occurring during the measurement are measured by a reflection-type photoelectric sensor. The maximum and minimum blood pressures and the pulse waves occurring at the times of maximum and minimum blood pressures are associated with each other. After that, the blood pressure is calculated from the associated values and the pulse waves of the vessel serially detected by the reflection-type photoelectric sensor.