Disclosed is a detector system for detecting underground anomalies comprising a detector device which includes a fluid chamber which is sealed; a float including a target, positioned within the fluid chamber; and a shielded phase shift proximity sensor configured to detect a distance between the target and proximity sensor, wherein a presence of an underground anomaly is determined based on the detected distance.

The present invention relates to a beer-making device which allows to produce beer, in which yeast is alive, directly on the ground for sale without expert knowledge and can produce various kinds of beer at once, automatically, cheaply and easily, without the possibility of contamination due to contact with the external environment. The beer-making device according to an embodiment of the present invention may comprise: a chamber in which a keg containing wort is mounted; a cold air supply device for supplying cold air into the chamber; a fermentation device for fermenting the wort contained in the keg mounted in the chamber; a weight sensor for detecting the weight of the keg containing the wort; a fermentation degree-measuring unit for measuring the specific gravity (G) of the keg containing the wort from a change in the weight of the keg containing the wort detected by the weight sensor; and a control unit for controlling the internal temperature of the chamber by controlling the cold air supply device, and for controlling the fermentation of the wort contained in the keg mounted in the chamber by controlling the fermentation device, all according to the specific gravity (G) of the keg containing the wort measured by the fermentation degree-measuring unit.

The present invention relates generally to a temperature control apparatus capable of controlling the temperature of a product using a temperature control material. More particularly, the present invention relates to a temperature control apparatus capable of uniformly controlling the temperature of a product by reducing a temperature deviation of a temperature control material flowing inside the product.

The present invention relates generally to a temperature control apparatus capable of controlling the temperature of a product using a temperature control material. More particularly, the present invention relates to a temperature control apparatus capable of uniformly controlling the temperature of a product by reducing a temperature deviation of a temperature control material flowing inside the product.

A method for controlling a temperature of a heating element can include: measuring a temperature of the heating element using a temperature sensor; estimating a temperature of the heating element based on a heat transfer model of the heating element; calculating a variation of the estimated temperature and a variation of the measured temperature; and determining whether a failure of the temperature sensor occurs based on the calculated variation of the estimated temperature and the calculated variation of the measured temperature.

A method for controlling a temperature of a heating element can include: measuring a temperature of the heating element using a temperature sensor; estimating a temperature of the heating element based on a heat transfer model of the heating element; calculating a variation of the estimated temperature and a variation of the measured temperature; and determining whether a failure of the temperature sensor occurs based on the calculated variation of the estimated temperature and the calculated variation of the measured temperature.

Electrical and electromechanical devices often require maintaining a specific temperature, or a narrow range or temperatures, during operation. An assembly regulates the temperature of a device by providing a variable thermal resistance between the device and a heatsink. The device can be mounted to a base having a high thermal resistance, the base thermally isolating the device from the heatsink. At low environmental temperatures, the base enables the device to rise to its operating temperature as a result of the device's waste heat, and with no or minimal use of a heater. As the environmental temperature increases, a working fluid, having a low thermal resistance, undergoes thermal expansion to fill a portion of a volume in the base between the device and the heat sink, lowering the thermal resistance between the device and the heatsink to maintain the device at the required operating temperature.

Electrical and electromechanical devices often require maintaining a specific temperature, or a narrow range or temperatures, during operation. An assembly regulates the temperature of a device by providing a variable thermal resistance between the device and a heatsink. The device can be mounted to a base having a high thermal resistance, the base thermally isolating the device from the heatsink. At low environmental temperatures, the base enables the device to rise to its operating temperature as a result of the device's waste heat, and with no or minimal use of a heater. As the environmental temperature increases, a working fluid, having a low thermal resistance, undergoes thermal expansion to fill a portion of a volume in the base between the device and the heat sink, lowering the thermal resistance between the device and the heatsink to maintain the device at the required operating temperature.

A seating system for a vehicle includes a vehicle seat, individually selectable and controllable electromagnetic coils individually positioned at respective locations within the seat corresponding to anatomical locations of a person sitting in the vehicle seat, and a controller. The electromagnetic coils to generate electromagnetic fields when activated. The controller to individually activate a subset of the electromagnetic coils to deliver electromagnetic energy to the anatomical locations of the person corresponding to the respective locations within the vehicle seat of the activated electromagnetic coils.

A method for controlling a temperature of a heating element can include: measuring a temperature of the heating element using a temperature sensor; estimating a temperature of the heating element based on a heat transfer model of the heating element; calculating a variation of the estimated temperature and a variation of the measured temperature; and determining whether a failure of the temperature sensor occurs based on the calculated variation of the estimated temperature and the calculated variation of the measured temperature.