A refrigerator includes: a cabinet; an upper door; a lower door that is a drawer type door; a draw-out rail that connects the lower door to a storage space in the cabinet and that guides insertion and withdrawal of the lower door in a front-rear direction; an elevation assembly that is located in the lower door, that elevates an object stored in the lower door in a state in which the lower door is withdrawn, and that elevates the object relative to the lower door; and a door restriction device configured to selectively restrict an opening movement of the upper door based on whether the lower door is opened or closed. The door restriction device is configured to restrict the opening movement of the upper door based on the lower door being opened, and to allow the opening movement of the upper door based on the lower door being closed.

Embodiments of this disclosure relate to electronic information, and disclose a smart refrigerator based on big data analysis of a server, including a refrigerator body, a collector, and a communication circuit. The collector is disposed in the refrigerator body and is used to collect human body health parameter information. The communication circuit is disposed in the refrigerator body and is connected to the collector, and is used to: upload human body health parameter information to a server, obtain a diet solution that is returned by the server after the server performs big data analysis on the human body health parameter information, and push the diet solution. This disclosure further discloses a health management method based on a smart refrigerator and a health management system. The smart refrigerator based on big data analysis of a server, the health management method based on a smart refrigerator, and the health management system that are provided in the embodiments of this disclosure can help a user properly plan healthy diets.

A system for evaluating insulation properties of a thermally insulated transport unit contains at least one thermally insulated transport unit for transporting and/or storing goods. The thermally insulated transport unit contains at least one temperature sensor configured to provide actual temperature data of the temperature within the thermally insulated transport unit. The system also includes at least one evaluation component for evaluating the insulation properties, at least based on a comparison of actual temperature data and calculated temperature data based on a thermal model of the thermally insulated transport unit.

A method for controlling a refrigerator, includes turning off a cold air transmission unit as a temperature of a storage compartment becomes equal to or less than a second reference temperature while a cold air generator is operated, turning on the cold air transmission unit, upon determining that the temperature of the storage compartment is equal to or greater than a first reference temperature which is greater than the second reference temperature, and calculating, by a controller, an operating ratio of the cold air transmission unit based on ON and OFF time of the cold air transmission unit, determining an output of the cold air transmission unit based on the operating ratio of the cold air transmission unit, and operating the cold air transmission unit with the determined output, upon determining that the temperature of the storage compartment is equal to or less than the second reference temperature.

Vehicle-rental-system includes: rental-vehicle for rent to user; user-terminal carried by user; and management-server configured to manage operation, locking, and unlocking of rental-vehicle. Rental-vehicle is automatic-drive-vehicle having first-space available for user, and second-space available for luggage. Management-server includes processor and memory. Processor is configured to perform: receiving reservation-information of rental-vehicle transmitted from user-terminal; calculating usage-fee of rental-vehicle based on reservation-information; acquiring payment-information of usage-fee; setting operation-schedule of rental-vehicle based on reservation-information when payment-information is acquired; outputting travel-command to rental-vehicle in accordance with operation-schedule; and outputting unlocking-command of rental-vehicle when rental-vehicle and user-terminal are mutually authenticated. Reservation-information includes usage-information of at least one of first-space and second-space. Processor is configured to perform: outputting unlocking-command includes outputting unlocking-command of at least one of first-space and second-space based on reservation-information when outputting unlocking-command of rental-vehicle.

A sensor-equipped RF tag is attached to a cooling box accommodating a cooling agent, and detects a temperature inside the cooling box, and a temperature and a position of the cooling agent. The sensor-equipped RF tag sends the detected temperature inside the cooling box, and the temperature and the position of the cooling agent to a server directly or via a taximeter. The server orders the cooling agent from a center terminal installed in a freezing center around a position of a taxi vehicle based on a detection result of the sensor-equipped RF tag.

An environmental control unit for use with a transport container is provided. The environmental control unit includes: a thermoelectric device; a fan to blow air across the thermoelectric device; a cooling passage configured to receive the air blown across the thermoelectric device and convey the air to a compartment of a transport container when the transport container is removably connected to the environmental control unit; a controller in electronic communication with the thermoelectric device and the fan; a battery configured to power the environmental control unit; and one or more piezoelectric devices configured to generate electrical power to charge the battery, wherein each of the one or more piezoelectric devices is electrically connected to the battery.

A leak detection system includes a sensor assembly (30) having a sensor housing (32), a leak sensor (60), and a 36 collection housing (34). The sensor housing (32) defines a first fluid inlet (40). The leak sensor (60) is disposed within the sensor housing (32). The leak sensor (60) is arranged to provide a signal indicative of a presence of the first fluid within an interior space of the transport refrigeration unit. The collection housing (34) is spaced apart from the sensor housing (32) and defines a second fluid inlet (80).

A system for monitoring health of refrigerated storage containers includes an instantaneous health module configured to determine instantaneous health values for a refrigerated storage container based on parameters measured by sensors of a refrigeration system of the refrigerated storage container during a trip of the refrigerated storage container. A statistics module is configured to, after completion of the trip of the refrigerated storage container, determine statistical values based on the instantaneous health values determined for the trip. A health module is configured to determine an overall health value for the refrigerated storage container at the completion of the trip based on the statistical values and to store the overall health value for the refrigerated storage container in memory in association with a unique identifier of the refrigerated storage container.

Disclosed is a transport refrigeration system including: an engine that is dedicated to the transport refrigeration system; a primary battery that is dedicated to the transport refrigeration system, the primary battery being electrically connected to the engine; and a jumper battery electrically connected to the primary battery, the jumper battery configured to automatically boost the primary battery when the primary battery fails to start the engine.