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2735 results about "Internal temperature" patented technology

Cooking Temperatures. Ground beef must be cooked to an internal temperature of 160 degrees Fahrenheit (71 degrees Celsius). Using a digital or dial food thermometer is crucial, the U.S. Department of Agriculture says, because research results indicate that some ground meat may prematurely brown before a safe internal temperature has been reached.

Heating and cooling control methods and systems

The present invention is related to the field of heating, ventilation and air conditioning (HVAC). More particularly, the present invention is related to methods and systems for controlled heating and cooling in order to reduce costs and the carbon footprint of said heating and cooling by optimizing the use of fresh air ventilation. The present invention is directed to mathematical algorithms incorporated into a controller and a method of determining control signals that are dependent on said mathematical algorithms and user programming that integrates information from multiple sensors, thermostats as well as weather information. Used in any home or building, the controller controls heating, cooling and ventilation systems in order to reduce costs and the carbon footprint of said heating and cooling by optimizing the use of fresh air ventilation. The controller works with typical HVAC systems generally in buildings and homes. The Smart-Stat algorithms are programmed into the controller and enable the controller to identify user-determined set-points alongside data from one or multiple internal temperature sensors. The user-determined set-points are also linked to time of day and day of week in a manner typical for typical thermostat devices available today. In such typical thermostat devices the controller will call for cooling or heating depending on the set points and conditions determined by the sensors in the building. The present invention is capable of interrupting the call for cooling or heating depending on whether the mathematical algorithms identify suitable outside weather conditions that permit the use of outside air cooling or outside air heating. Thus the call for heating or cooling can be redirected to call for ventilation instead of heating or cooling.

Lithium ion battery internal temperature monitoring method

The invention discloses a lithium ion battery internal temperature monitoring method. The monitoring method includes the following steps that a charge-discharge tester is used for carrying out charge-discharge tests on a lithium ion battery on different environment conditions to obtain a battery surface temperature change curve; related parameters such as battery internal resistance and an open-circuit voltage temperature coefficient are tested, and a lithium ion battery electric heating coupling model based on a variable heat production rate is set up; the temperature rise change of the discharge process of the battery is simulated to obtain a temperature change simulation curve; the experiment test temperature change curve and the simulation curve are analyzed and compared to optimize and verify the electric heating coupling model; the influence between the battery internal temperature and the battery surface temperature as well as the influence between the discharge currents and the discharge depth are analyzed, and a lithium ion battery internal temperature model is constructed; the battery internal temperature is monitored in real time according to the model. The lithium ion battery internal temperature monitoring method is simple and easy to implement, small in estimation error and capable of well meeting the requirement for monitoring the battery internal temperature in real time.

Electric pressure cooker with air exhaust function and air exhaust control method

The invention relates to the technical field of electric pressure cookers and discloses an electric pressure cooker with the air exhaust function. The electric pressure cooker comprises a cooker body, an outer pot, an inner pot, a cooker cover, a control circuit and operating keys. The outer pot is supported in the cooker body. The cooker cover comprises an outer cover body and an inner cover body. The inner cover body is arranged in the outer cover body. The outer cover body is rotationally buckled on the outer pot. The inner cover body is buckled on the inner pot. A sealing ring for sealing the inner pot and the inner cover body when the interior of the cooker is in a negative pressure state is arranged between the inner cover body and the inner pot. An air exhaust device for exhausting air in the inner pot is arranged in the cooker body. An internal temperature detection device for detecting the temperature of air in the inner pot is arranged on the inner cover body. An external temperature detection device for detecting the external environment temperature is arranged on the cooker body. When food left in the cooker needs to be kept fresh, the air exhaust device is started, residual air in the cooker is exhausted, the interior of the cooker is in a sealed state through the sealing ring, external air cannot enter the cooker, and therefore the purpose of long-time freshness keeping of the left food is achieved, a user does not need to pour out the left food to keep the left food fresh in another way, and use of the user is greatly facilitated.

Electric pressure cooker and control method thereof and readable storage medium

The invention discloses an electric pressure cooker and a control method thereof and a readable storage medium. The electric pressure cooker comprises a central processing unit, a key module, a detection module, a temperature module and a pressure relief module, and the key module, the detection module, the temperature module and the pressure relief module are all in electrical connection with thecentral processing unit. The key module is used for receiving operating instructions of a user; the detection module is used for detecting internal temperature and/or pressure of the electric pressure cooker; the central processing unit is used for receiving information of the key module and the detection module and sending corresponding control instructions to the temperature control module andthe pressure relief module; the temperature control module is used for heating or cooling the electric pressure cooker according to the instructions of the central processing unit; the pressure reliefmodule is used for relieving pressure of the electric pressure cooker by exhausting according to the instructions of the central processing unit. Cooking smell dispersion and high noise generation during cooking can be avoided, and accordingly utilization demands of users in different places can be met, and user experience is improved.

Self-referencing/body motion tracking non-invasive internal temperature distribution measurement method and apparatus using magnetic resonance tomographic imaging technique

A noninvasive image measuring method of measuring internal organ/tissue temperature using an MRI system. Temperature measurement insusceptible to body motion and spatial variation of magnetic field is realized by utilizing the position and size of a temperature change region as a priori information to determine the phase distribution of the complex magnetic resonance signal of water proton at a given temperature point and by subtracting the phase distribution before the temperature change estimated (self-referred) from the phase distribution in the peripheral region for each pixel of the image, thereby eliminating the subtraction process of image before and after temperature change. The precision of temperature measurement can be enhanced by estimating a complex curved surface formed of the peripheral region in each temperature change region of the real-part and imaginary-part images of the complex magnetic resonance signal, and calculating the phase difference between an actually measured complex signal distribution and the estimated complex signal distribution of the complex signal distribution for each pixel, thereby reducing the estimation error due to phase transition from −π to +π occurring in a phase distribution. Furthermore, temperature can be measured through optimal imaging following up body motion by using an optical positioning system in combination even if the part being measured is shifted.

Fiber grating-based transformer internal temperature detection system

The invention provides a fiber grating-based transformer internal temperature detection system, which comprises a light source, fiber grating sensors, a grating signal demodulation system, a signal processing display instrument and data analysis software, wherein the fiber grating sensors are arranged on a winding and a strut of a transformer and sensing points at other positions in the transformer and used for sensing measurement of transformer temperature, stress and local discharge parameters; the grating signal demodulation system receives the measured data of the fiber grating sensors, and accurately demodulates corresponding light signals of the temperature, stress and local discharge parameters; the signal processing display instrument performs correction processing such as temperature compensation, stress sensitivity removal and the like on the measured signals, and displays real-time data on an instrument panel; and the data analysis software performs programming software analysis on the processed data to acquire real-time transformer internal temperature field and temperature change, and then performs transformer internal temperature monitoring and full service life assessment. The system realizes real-time measurement of temperature of multiple points in the transformer through the photoelectric sensors, and provides a good foundation for economic operation of the transformer.
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