Hitachi Patente

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Provided is a rail vehicle air-conditioning apparatus capable of performing detection as to an increase in pressure loss caused due to dust clogging of a heat exchanger and dust clogging of a filter while distinguishing locations thereof when the heat exchanger and the filter are disposed on the same flow path.The rail vehicle air-conditioning apparatus is an air-conditioning apparatus for a railway vehicle, and includes a refrigeration cycle including an outdoor-side heat exchanger, an outdoor-side fan, a compressor, an indoor-side heat exchanger, a filter, and an indoor-side fan. The filter is installed on a windward side of the indoor-side heat exchanger. The rail vehicle air-conditioning apparatus further includes sensors that measure an air temperature and humidity on the windward side of the indoor-side heat exchanger, an air temperature on the leeward side of the indoor-side heat exchanger, a temperature of a refrigerant inflow-side pipe of the indoor-side heat exchanger, a temperature of a refrigerant outflow-side pipe of the outdoor-side heat exchanger, and a pressure difference across the indoor-side heat exchanger or across the filter. The rail vehicle air-conditioning apparatus further includes an airflow rate decrease evaluation system that detects a decrease in an airflow rate, without using fan electric power, from information on a temperature of the heat exchanger and temperatures and humidity of air before and after passing through the heat exchanger, a dust deposition location identification system that determines whether a factor that causes the decrease in the airflow rate is dust accumulation on the heat exchanger, dust accumulation on the filter, or both, and a cleaning time diagnosis system and a cleaning time diagnosis device that perform, when the airflow rate decrease evaluation system detects a predetermined decrease in the airflow rate, causing the dust deposition location identification system to identify a dust deposition location, indicating the location, and displaying an indication prompting cleaning of the heat exchanger or the filter.

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Provided is a secondary battery deterioration prediction system including: an acquisition unit that acquires, in each operation condition, a relationship between a charging status and an open circuit voltage of a secondary battery and a relationship between the charging status and an internal resistance of the battery; an internal state diagnosis unit that diagnoses, based on the acquired relationships, a deterioration state of a positive electrode and a negative electrode of the secondary battery in each operation condition; a life prediction formula generation unit that generates a life prediction formula based on a time series change in the obtained deterioration state; and a deterioration calculation unit that calculates deterioration of the secondary battery based on the life prediction formula. The life prediction formula generation unit generates a life prediction formula based on a time series change in a deterioration state of the positive electrode and the negative electrode in a case where a load is applied to the secondary battery.

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An amount of surplus power self-consumed by an operator is increased. The power interchange management system (1) includes: an EV dispatch and charging planning system (42) configured to manage a charging device (43) for an electric vehicle and a private power generation device and plan charging and dispatch for the electric vehicle; an EV dispatch and charging planning system (46) configured to manage a charging device (43) for an electric vehicle and plan charging and dispatch for the electric vehicle; and an interchange planning unit (21) configured to aggregate surplus power from the EV dispatch and charging planning system (42) to obtain interchangeable power and provide the interchangeable power to the EV dispatch and charging planning system (46) according to a predetermined priority order.

A sequence generation device according to the present disclosure includes a sequence proxy evaluation unit that calculates a proxy evaluation value for a sequence including a plurality of amino acids, and a sequence generation unit that generates the sequence using a learning model, in order to generate various sequences while maintaining high binding affinity. The sequence generation unit changes some of the amino acids in the sequence generated by the learning model with a predetermined probability, selects an amino acid after change using a probability density function such that the amino acid having a characteristic closer to that of the amino acid before change is selected with a higher probability, trains the learning model to generate a sequence indicating a higher proxy evaluation value based on the proxy evaluation value for the sequence after the amino acid is changed, thereby generating a trained model, and generates a generation sequence using the trained model (see FIG. 3).

Included are: a plurality of sensor units that detect an external or internal condition of each vehicle of a train; an abnormality detecting unit that detects abnormality in the train, on the basis of detection outputs from the sensor units; a door identifying unit that identifies, when abnormality of the train is detected, whether each door belongs to an area where passengers in the train can get off safely, on the basis of a detection output of the sensor unit that detects the external condition of the vehicles; a storage unit that stores information on a plurality of evacuation routes in a manner associated with positions along a travelling route of the train; a determining unit that determines, when the train stops due to abnormality in the train, whether there is any evacuation route connected from a specific door, among pieces of wayside information, at the position where the train has stopped; and a plurality of display units that display information including a determination result of the determining unit, in each of the vehicles. When a positive determination result is obtained by the determining unit, the evacuation route connected from the specific door is extracted from the wayside information, and evacuation guidance information including an image of the evacuation route thus extracted and an image of the specific door is output to each of the display units, and each of the display units displays the image of the evacuation route and the image of the specific door, on the basis of the evacuation guidance information.

Provided is an inverter control device that makes it possible to improve the cosmic ray resistance of an inverter without increasing cost and system weight. An inverter control device 600 comprises: a voltage application total time determination unit 602 for determining a total voltage application time of each of a plurality of inverters 201, 202, 207, and 208; an operation pattern determination unit 603 for receiving as an input operation information of a flight vehicle 501, determining an operation pattern of the flight vehicle 501, and outputting the operation pattern to the voltage application total time determination unit 602; an inverter control unit 604 for controlling the plurality of inverters 201, 202, 207, 208 according to a command of the voltage total time determination unit 602, and electric current information and voltage information of the plurality of inverters 201, 202, 207, 208; and a switching control unit 605 for controlling the connection and opening of the plurality of inverters 201, 202, 207, 208 and an electric power supply 300 of the plurality of inverters 201, 202, 207, 208, according to information of the inverter control unit 604.

In a railway communication system, to provide communication control to ensure reliability of communication by making communication paths redundant and determine an optimal number of paths while determining an optimal communication path, a communication control device for the railway communication system that performs data transmission between a plurality of devices via a plurality of communication paths including at least a wireless communication path includes: a communication path monitoring unit that monitors whether each of the plurality of communication paths is usable; a communication path determining unit that determines a communication path to be used for the data transmission from among the plurality of communication paths; and a path management unit that manages each of the plurality of communication paths as any of a communication path in a used state, a communication path in a standby state, and a communication path in an unavailable state. The communication path determining unit determines a communication path to be used for the data transmission based on a result of the monitoring by the communication path monitoring unit, assigns each of the plurality of communication paths to any of a used state, a standby state, and an unavailable state, and registers the plurality of communication paths to the path management unit.

In a railroad control device using a redundancy, a technology is provided in which, when an influence in an inactive state of a main system is small, a sub system is deactivated. As a redundancy system including the main system control device and one or more sub system control devices for cost reduction and improvement in efficiency of use of equipment, when state information about a control target facility controlled by the main system control device or the sub system control device satisfies a predetermined condition, a sub system process by the sub system control device is deactivated.

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