摘要:
It enables a user to rapidly perform operations for operation items having a hierarchical structure by a continuous operation that is intuitive and simple. It includes a display part that displays information or data, a contact detection unit that detects a contact of the display part with fingers of a user, a finger number determination unit that determines the number of fingers of the user for the contact detected by the contact detection unit, a storage unit that stores hierarchy information of a plurality of operation items for the information or data, and a hierarchy selection unit that selects a hierarchy which coincides with the number of fingers detected by the finger number determination unit among the hierarchy information stored in the storage unit, as an operation item for the contact detected by the contact detection unit.
摘要:
A server authentication method is provided. In the method, a client receives a public key of an evaluated server during establishment of a secure communication path with the evaluated server. The client terminal transmits a first ID to the evaluated server. The client terminal receives a second ID and a first random number from the evaluated server. The client terminal determines that the evaluated server is valid when the received first random number corresponds to the transmitted first ID and a public key stored in a public key management unit configured to manage the public key in advance is identical to the received public key. The client terminal transmits a second random number corresponding to the second ID to the evaluated server when the evaluated server is determined to be valid.
摘要:
In order to provide a system which detects and classifies abnormality in a solar battery even during power generation, an output voltage and an output current of the solar battery during power generation are detected, and a solar battery characteristic equation and a threshold value for detecting an abnormal state are calculated using the detected voltage value and current value and the measurement data of an external environment measurement unit. The kind of abnormal state of the solar battery is classified using the calculation result of the characteristic equation and the threshold value.
摘要:
The present invention relates to a system for controlling microgrid facilities. In particular, the microgrid control system provided is capable of controlling multiple facilities according to characteristics of the facilities in order to achieve economic efficiency, environmental friendliness, and continued operability. The microgrid control system for controlling the operations of the multiple power facilities is provided with: a power supply activation/suspension planning unit that has a prediction unit for predicting outputs or loads of power supply facilities or load facilities and a prediction unit for predicting prediction errors contained therein; and an economical load allocation unit that determines command values related to the distribution of loads to be borne by currently running power supply facilities.
摘要:
An AC system having, for example, a voltage source, an inductance and a load has connected thereto an apparatus for controlling the phase and amplitude of the voltage of the system. The instantaneous current and voltage in the AC electrical system are measured and power measurements derived therefrom. The power measurements may be instantaneous real and imaginary power, instantaneous active and reactive power, or active and reactive power averaged over less than one cycle. The power measurements are then used to derive phase related control values, on the basis of which control signals are generated to a converter. The action of the converter in accordance with the control signals thus controls the amplitude and phase of the voltage. By use of power measurements, it is not necessary to measure the phase of the voltage of the AC system.
摘要:
An area light source device according to the present invention includes a plate-shaped light guide plate that has one surface that serves as a transmissive surface and another surface that is on the opposite side from the transmissive surface and in which a plurality of recessed portions are provided. The area light source device also includes at least two light-emitting diodes that are accommodated in each of the recessed portions, that emit light in a direction in which the light guide plate extends, and that are disposed such that they emit light in different directions. In this configuration, directing a light-emitting face of any one of the light-emitting diodes such that it faces a given light-emitting area makes it possible to cause light to be emitted uniformly within the light-emitting area and also makes it possible to cause light to be emitted only within the specific light-emitting area.
摘要:
A signal transmission/monitoring method for a system including a master station and a plurality of slave stations installed on and along a signal transmission line so as to be capable of mutually performing information transmission and reception in such a manner that the master station calls the slave stations through sequential polling with the called slave station sending reply information to the master station. An interrupt enable time zone is provided between a time point at which the call signal transmission from the master station is completed and a time point at which the reply signal transmission from the slave station is started. When other slave station issues an interrupt request within the interrupt enable time zone, signal transmission to the master station from that other slave station is carried out with priority.
摘要:
There is provided a monitoring apparatus including a monitoring unit that monitors an operating situation of nodes over a network based on a predetermined monitoring parameter, a memory that records the operating situation monitored by the monitoring unit, and a changing unit that changes the monitoring parameters based on a past operating situation recorded by the memory.
摘要:
In order to provide a calculation method for reproducing solar cell characteristics with high accuracy by using data of a short-circuit current, an open-circuit voltage and the maximum power operation point of a solar cell in a temperature and a solar radiation intensity in a standard state, parameter values for determining characteristics in the standard state are calculated by using data of the short-circuit current, the open-circuit voltage and the maximum power operation point of the solar cell in the temperature and the solar radiation intensity in the standard state. Next, temperature coefficients of the open-circuit voltage and the reverse saturation current are calculated by using the calculated parameters, and a short-circuit current, an open-circuit voltage and the maximum power operation point at a given temperature are calculated.
摘要:
In order to provide a system which detects and classifies abnormality in a solar battery even during power generation, an output voltage and an output current of the solar battery during power generation are detected, and a solar battery characteristic equation and a threshold value for detecting an abnormal state are calculated using the detected voltage value and current value and the measurement data of an external environment measurement unit. The kind of abnormal state of the solar battery is classified using the calculation result of the characteristic equation and the threshold value.