Abstract: The control device of the fuel cell system performs a first operation of charging the battery with the generated electric power while supplying air to the fuel cell when the target value of the generated electric power of the fuel cell is higher than the current value of the generated electric power, and performs a second operation of charging the battery with the generated electric power of the fuel cell while supplying the air with the lower flow rate than the first operation when the target value of the generated electric power is lower than the current value of the generated electric power. When an amount of charge in the battery is larger than a reference amount of charge, perform a power supply stop operation of stopping power supply from the fuel cell to the battery.

Abstract: A fuel gas supply system for a fuel cell includes an injector, an inlet pressure acquisition unit, a discharge valve, a hydrogen partial pressure acquisition unit, and a controller. The controller is configured to stop driving the injector when a hydrogen partial pressure reaches or exceeds a first upper limit value in a state where the injector is being driven, and start driving the injector when the hydrogen partial pressure falls to or below a first lower limit value in a state where the injector is stopped. The controller is configured to open the discharge valve when an inlet pressure reaches or exceeds a second upper limit value in a state where the discharge valve is closed, and close the discharge valve when the inlet pressure falls to or below a second lower limit value in a state where the discharge valve is open.

Abstract: A system includes a hotel server managed by a hotel, and a terminal possessed by a user. The terminal includes a storage unit and an advance check-in control unit. The storage unit stores reservation information of the hotel including a start date of stay and reservation holder identifying information that identifies a reservation holder of the hotel in association with each other. The advance check-in control unit asks the user to agree to provide the reservation holder identifying information to the hotel server a predetermined period before the start date of stay. When the user agrees to provide the reservation holder identifying information, the advance check-in control unit transmits the reservation holder identifying information to the hotel server as hotel guest identifying information that identifies a hotel guest staying at the hotel.

Abstract: A price setting system receives demand data indicating a demand of a service in time series, the demand data being generated based on data indicating at least one action of reservation, purchase, and payment performed by a customer for the service. The price setting system determines predetermined accompanying data for the demand data. The price setting system sets a price for the service at a predetermined target time based on the demand data and the predetermined accompanying data.

Abstract: A server (100) that facilitates a user to register biometric information is provided. The server (100) includes an acquisition unit (101) and a reservation management unit (102). The acquisition unit (101) is configured to acquire, from a user's terminal, reservation information about a reservation for a service provided using biometric authentication. The reservation management unit (102) is configured to determine whether or not to accept the reservation for the service based on the reservation information. When the reservation management unit (102) determines to accept the reservation for the service, the reservation management unit (102) transmits, to the terminal, a reservation completion notice including introduction information about installation of an application for registering information necessary for the biometric authentication.

Abstract: A server (100) that facilitates a user to register biometric information is provided. The server (100) includes an acquisition unit (101) and a reservation management unit (102). The acquisition unit (101) is configured to acquire, from a user's terminal, reservation information about a reservation for a service provided using biometric authentication. The reservation management unit (102) is configured to determine whether or not to accept the reservation for the service based on the reservation information. When the reservation management unit (102) determines to accept the reservation for the service, the reservation management unit (102) transmits, to the terminal, a reservation completion notice including introduction information about installation of an application for registering information necessary for the biometric authentication.

Abstract: An accommodation management system includes: a first acquisition unit that obtains a face image of a visiting user who uses a check-in terminal installed at a visible position from a reception counter of an accommodation facility; an execution unit that identifies the visiting user on the basis of the face image of the visiting user and performs a check-in process of the visiting user; a second acquisition unit that obtains a face image of a specific user who uses services; and a permission unit that permits a use of the services when the check-in process is completed for the specific user who is identified on the basis of the face image of the specific user.

Abstract: A facility usage control apparatus is configured to register identity identification information for registration of a user who makes a reservation to use a predetermined facility, a mobile terminal of the user, and reservation information of the facility in association with each other, control authentication using the identity identification information for registration based on identity identification information for authentication acquired from the user through a first authentication terminal installed at the facility, identify the reservation information associated with the identity identification information for registration of the user who has been successfully authenticated, determine availability of the facility based on the identified reservation information, make a signature request to the mobile terminal associated with the identity identification information for registration when the user is determined that he/she can use the facility, and acquire signature data input by the user to the mobile ter

Abstract: An accommodation management system includes: a first acquisition unit that obtains a face image of a visiting user who uses a check-in terminal installed at a visible position from a reception counter of an accommodation facility; an execution unit that identifies the visiting user on the basis of the face image of the visiting user and performs a check-in process of the visiting user; a second acquisition unit that obtains a face image of a specific user who uses services; and a permission unit that permits a use of the services when the check-in process is completed for the specific user who is identified on the basis of the face image of the specific user.

Abstract: An accommodation management system includes: a first acquisition unit that obtains a face image of a visiting user who uses a check-in terminal installed at a visible position from a reception counter of an accommodation facility; an execution unit that identifies the visiting user on the basis of the face image of the visiting user and performs a check-in process of the visiting user; a second acquisition unit that obtains a face image of a specific user who uses services; and a permission unit that permits a use of the services when the check-in process is completed for the specific user who is identified on the basis of the face image of the specific user.

Abstract: An accommodation management system includes: a first acquisition unit that obtains a face image of a visiting user who uses a check-in terminal installed at a visible position from a reception counter of an accommodation facility; an execution unit that identifies the visiting user on the basis of the face image of the visiting user and performs a check-in process of the visiting user; a second acquisition unit that obtains a face image of a specific user who uses services; and a permission unit that permits a use of the services when the check-in process is completed for the specific user who is identified on the basis of the face image of the specific user.

Abstract: A server (100) that facilitates a user to register biometric information is provided. The server (100) includes an acquisition unit (101) and a reservation management unit (102). The acquisition unit (101) is configured to acquire, from a user's terminal, reservation information about a reservation for a service provided using biometric authentication. The reservation management unit (102) is configured to determine whether or not to accept the reservation for the service based on the reservation information. When the reservation management unit (102) determines to accept the reservation for the service, the reservation management unit (102) transmits, to the terminal, a reservation completion notice including introduction information about installation of an application for registering information necessary for the biometric authentication.

Abstract: A fuel gas supply system for a fuel cell includes an injector, an inlet pressure acquisition unit, a discharge valve, a hydrogen partial pressure acquisition unit, and a controller. The controller is configured to stop driving the injector when a hydrogen partial pressure reaches or exceeds a first upper limit value in a state where the injector is being driven, and start driving the injector when the hydrogen partial pressure falls to or below a first lower limit value in a state where the injector is stopped. The controller is configured to open the discharge valve when an inlet pressure reaches or exceeds a second upper limit value in a state where the discharge valve is closed, and close the discharge valve when the inlet pressure falls to or below a second lower limit value in a state where the discharge valve is open.

Abstract: A fuel cell system is equipped with a control unit that controls a rotational speed of the turbo compressor that supplies air to an air supply flow passage and an opening degree of at least one valve that adjusts a flow rate and a pressure of the air supplied to a fuel cell such that an operating point of the turbo compressor becomes a target operating point. The control unit sets the target operating point within an operating point range that is on the higher flow rate side than at least part of a first region where an amount of change in flow rate is larger than a predetermined value when a pressure ratio of the turbo compressor is changed by a predetermined amount at a same rotational speed, on a higher flow rate side than a surging region, when a predetermined condition is fulfilled.

Abstract: The present disclosure provides a fuel cell system that achieves a stable operation of a turbo compressor. The fuel cell system includes: a fuel cell; an air supply flow path; a turbo compressor; a bypass flow path configured to discharges air by branching off from the air supply flow path; a pressure regulating valve; a bypass valve; and a control unit, the pressure regulating valve, and the bypass valve, in which the control unit calculates, from a flow rate of air supplied based on an actual rotation speed of the turbo compressor and a target flow rate of air to the fuel cell, a flow rate of excess air discharged from the bypass flow path, and determines a degree of opening of the bypass valve based on the target flow rate of air and the flow rate of excess air.

Abstract: An accommodation management system includes: a first acquisition unit that obtains a face image of a visiting user who uses a check-in terminal installed at a visible position from a reception counter of an accommodation facility; an execution unit that identifies the visiting user on the basis of the face image of the visiting user and performs a check-in process of the visiting user; a second acquisition unit that obtains a face image of a specific user who uses services; and a permission unit that permits a use of the services when the check-in process is completed for the specific user who is identified on the basis of the face image of the specific user.

Abstract: A control unit of a fuel cell system acquires a service operating point, repeats a process of calculating a distance between the service operating point and a surging region, while transferring an operating point of a turbo compressor from a first operating point to a second operating point outside the surging region, sets opening degrees of a pressure adjusting valve and a bypass valve such that the turbo compressor operates at a required operating point, when the distance exceeds a threshold, and corrects at least one of the opening degrees of the pressure adjusting valve and the bypass valve such that the at least one of the opening degrees becomes larger than an opening degree set such that the turbo compressor operates at the required operating point, when the distance is equal to or shorter than the threshold.

Abstract: The present disclosure provides a fuel cell system that achieves a stable operation of a turbo compressor. The fuel cell system includes: a fuel cell; an air supply flow path; a turbo compressor; a bypass flow path configured to discharges air by branching off from the air supply flow path; a pressure regulating valve; a bypass valve; and a control unit, the pressure regulating valve, and the bypass valve, in which the control unit calculates, from a flow rate of air supplied based on an actual rotation speed of the turbo compressor and a target flow rate of air to the fuel cell, a flow rate of excess air discharged from the bypass flow path, and determines a degree of opening of the bypass valve based on the target flow rate of air and the flow rate of excess air.

Abstract: There is provided a fuel cell system comprising a fuel cell including an electrolyte membrane, an anode and a cathode; and a controller configured to control a fuel gas supply part and an oxidizing gas supply part to supply amounts of a fuel gas and an oxidizing gas corresponding to a required power, to the fuel cell. During an intermittent operation that has the required power equal to or lower than a predetermined value and stops power generation in the fuel cell, the controller estimates a crossover amount that is an amount of the fuel gas moved from the anode to the cathode through the electrolyte membrane. The controller also calculates a supply amount of the oxidizing gas that is an amount of the oxidizing gas to be supplied to the fuel cell, based on the estimated crossover amount and controls the oxidizing gas supply part to supply the calculated supply amount of the oxidizing gas to the fuel cell.