32 results about "Thermal manikin" patented technology

An approach to noninvasively, remotely and accurately detect core body temperature in a warm-blooded subject, human or animal, via thermal imaging. Preferred features such as the use of in-frame temperature references, specific anatomical target regions and a physiological heat transfer model help the present invention to overcome pitfalls inherent with existing thermal imaging techniques applied to physiological screening applications. This invention provides the ability to noninvasively, remotely and rapidly screen for diseases or conditions that are characterized by changes in core body temperature. One human application of this invention is the remote screening for severe acute respiratory syndrome (SARS), since fever is a common, early symptom. Other diseases and conditions that affect the core body temperature of humans or animals may also be noninvasively and remotely detected with this invention.

The invention provides a method for making a body-warming dummy based on a flexible stretchable heating film and a body-warming dummy, comprising the following steps: establishing a three-dimensional model of the body-warming dummy, and partitioning different parts of the body-warming dummy according to the curvature; Performing curved surface development on each part of the body-warming dummy; designing a stretchable and flexible uniform heating film with the contour of each curved surface as a boundary; making a stretchable and flexible uniform heating film; The heating film is attached to the corresponding partition part of the body-warming dummy. The invention adopts a flexible and uniform heating device, designs a stretchable double-layer circuit according to the shape of different regions of the human body, and uses a silicone rubber material to encapsulate the stretchable double-layer circuit on a curved surface to ensure the temperature uniformity of the warming dummy.

The invention discloses a household electrical appliance comfort simulation natural wind test device and a test method. Whether the air outlet of a tested sample reaches the comfort simulation natural wind effect can be assessed. The natural wind simulation test method for the comfort of the household appliance comprises the following steps: firstly, acquiring a wind speed-time curve of the air outlet of the household appliance (such as an air conditioner, an electric fan, an air purifier, a ventilator, a fresh air system, a warm air blower and the like), and then analyzing and calculating the curve to obtain a power spectral density index and a phase diagram width-to-length ratio of the curve; and whether the outlet wind achieves the natural wind effect or not is checked through the power spectrum density index and the phase diagram width-to-length ratio. According to the household appliance comfort simulation natural wind test method, the use comfort of a tested sample is evaluated by checking items such as vertical air temperature difference, blowing feeling index, predicted average thermal feeling index, predicted unsatisfaction rate, temperature uniformity and equivalent temperature of a thermal dummy in multiple laboratories, so that the industry development is guided, the product variety is reasonably developed, and the product quality is improved. And the social requirements can be better met.

The invention discloses a body model thermal manikin system. The system is a test system which can simulate thermal response of a human body at a high temperature, can simulate the processes of heat absorption of the human body, heat conduction among different tissues, heat production, heat regulation, blood heat convection, body surface thermal radiation and sweating, and is used for medical assessment, aviation, performance analysis for a fire hazard and a high temperature environment, human comfort, fabric assessment and environmental measurement. The system comprises the human body thermal body model and a multi-branch blood circulation simulation system, wherein the human body thermal body model has a layered and sectioned body model structure; each layer and each section adopt materials which are similar to human biological tissue thermal characteristics corresponding to the layer; each layer and each section have different thermal physical property parameters; and the multi-branch blood circulation simulation system comprises a power source and a circulation line which is provided with flowing liquid; and the circulation line comprises a multi-caliber arterial system, a multi-caliber venous system, a control valve and a three-way or multi-way pipe for connection.

The invention discloses a preparation method for non-uniformly perspiring skin applicable to a perspiring fabric thermal manikin. The non-uniformly perspiring skin is composed of a plurality of cut pieces made of waterproof moisture-permeable fabrics, including a head cut piece, a front cut piece, a cut piece and sleeve cut pieces, wherein each cut piece is prepared through blade-coating of liquid and molding silica gel with templates of different hollowed-out areas; the front cut piece is prepared by stitching a left front cut piece and a right front cut piece together; the back cut piece is prepared by stitching a left back cut piece and a right back cut piece together; and the sleeve cut pieces are composed of a left sleeve cut piece and a right sleeve cut piece. The invention has the following characteristics and beneficial effects: the skin applicable to the perspiring fabric thermal manikin in the invention can realize simulation of non-uniform perspiring of different parts of a human body and improves the real-people-simulation degree of experimental results; and the preparation method is also applicable to improvement of conventional preparation processes for skin applicable to the perspiring fabric thermal manikin.

The invention discloses a system and working method for simulating human body sweating under conditions of a fire scene, including an artificial environment cabin, a warm body dummy, a motion system, a temperature control system in the cabin, a wind speed simulation system and a control center; the motion system is used for Simulate different motion states of the human body, the temperature control system in the cabin is used to simulate the temperature of the fire scene, the wind speed simulation system is used to simulate the wind force of the fire scene, and the thermal manikin is used to simulate the actual sweating of various parts of the human body; Under the influence of motion state, different fire environment temperature and different wind force on the change of fire environment temperature field distribution, the sweating amount and sweat flow distribution of each part of the thermal manikin can be obtained, so as to provide data for the subsequent layout of sweat-absorbing materials in firefighting clothing For reference, the sweat of different parts of firefighters can be absorbed in time when they are rescued in the fire scene, so as to ensure the rescue ability of firefighters.

The invention discloses a novel thermal manikin system. The system comprises a manikin body, a body temperature regulating device, a breath regulating device and a sweat regulating device. The body temperature regulating device, the breath regulating device and the sweat regulating device are connected with the manikin body. The body temperature regulating device is used for regulating the body temperature of the manikin body. The breath regulating device is used for regulating the breath of the manikin body. The sweat regulating device is used for regulating the sweat on the body surface of the manikin body. The novel thermal manikin system can have the functions of simulating heating of the body surface, the core temperature, the moisture of the body surface and the breathing process of the human body at the same time, and can be used for various thermal comfort and air quality experiments and human body replacement experiments.

The invention discloses a self-balancing type body-warming dummy and a using method thereof, which simulate a sitting human body and arrange an internal heating system and an aerodynamic system in thebody-warming dummy to realize self heat balance, and the body-warming dummy provided by the invention can realize constant power 95W and a human body surface constant temperature function. The constant temperature precision value of the warm dummy depends on the temperature value of an air-conditioned room where the dummy is located and the wind field condition around the dummy, and the maximum precision is + / -1.5 DEG C. Most importantly, the dummy is a heat self-balancing dummy, and the purposes of constant power and constant temperature can be achieved without an external complex control system.

The invention discloses a heat environment comfort evaluation method based on a thermal manikin. The method comprises the following steps of obtaining convection radiation heat exchange between the thermal manikin and the environment; obtaining the human body average skin temperature according to the convection radiation heat exchange; obtaining the equivalent space temperature of the thermal manikin according to the human body average skin temperature; grading the heat environment comfort according to the equivalent space temperature. The heat environment comfort evaluation method based on the thermal manikin provided by the invention has the advantages that the data accuracy of air conditioner comfort evaluation can be improved; the air conditioner comfort evaluation requirements can be met.

The invention discloses a semi-transparent simulation experiment platform of a large passenger plane cabin environment. The semi-transparent simulation experiment platform comprises a thermostatic chamber, a thermostatic chamber air conditioning system, a simulation cabin air conditioning system and a real-time data acquisition and monitoring system, wherein a semi-transparent simulation cabin of the passenger plane cabin environment is arranged in the thermostatic chamber. The semi-transparent simulation cabin and seats in the semi-transparent simulation cabin are all designed and installed according to a real cabin size with the ratio of 1:1. Thermal manikins are arranged in the simulation cabin and used for simulating sensible heat and heat dissipation of real persons. The simulation cabin is provided with multiple types of simulation air ports, and disassembling and replacing are convenient. Air distribution forms of the simulation cabin can be changed by opening or closing a valve. By utilizing the air conditioning system of the thermostatic chamber and the air conditioning system of the simulation cabin, diversified experimental conditions can be achieved. Through a computer software platform, real-time data can be monitored and controlled. According to the semi-transparent simulation experiment platform, a flow field in the cabin can be obtained by fully utilizing a PIV technology, and meanwhile the diversified cabin air distribution forms can be achieved. The working condition during the experimental process is stable, and regulating and controlling of temperature and air output are accurate.

The invention provides a body-warming dummy for environmental thermal comfort experiment, which adopts 16 electric heating sheets which are reasonably designed and can be mass-produced, and the traditional method of directly winding heating wires on the dummy model by hand. Compared with the heat flux, the production efficiency is greatly improved and the cost is saved; the thickness, width and spacing of the electric heating wire of the heating sheet are uniformly designed according to the heat flow density requirements of each part, and are produced by one-time processing by the chemical etching method of the copper sheet, which can avoid the traditional It is difficult to fully guarantee the production accuracy by laying the heating wire manually; each heating piece is obtained by the method of unfolding the surface of the model, and the double-sided thermally conductive adhesive film is used to ensure the good fit between the heating piece and the surface of the dummy; the electric heating of the heating piece The wire adopts a corrugated design, which makes the heating piece have a certain ductility; the input voltage of the electric heating wire is 24V, which is within the safe voltage range of the human body; the heating piece adopts a three-layer film structure.

A system and method for assessing thermal comfort in an enclosure is disclosed. In one embodiment, a method includes performing a numerical analysis on a calibration enclosure including a thermal manikin in a uniform thermal environment to obtain a surface heat transfer coefficient (heal) for each body part of the thermal manikin. The method also includes performing a numerical analysis on an enclosure including one or more thermal manikins in a non-uniform thermal environment to obtain a total heat flux (q" T ) for each body part of the one or more thermal manikins. The method further includes computing an equivalent temperature (t eq ) of each body part of the one or more thermal manikins using the obtained associated h cal , the obtained associated q" T , and an associated surface temperature of the body part. Furthermore, the method includes evaluating thermal comfort in the enclosure based on each computed t eq .

The invention relates to a method for measuring the thickness of anair layer under apparel. The method comprises the steps of wearingtheapparel on thermal manikin, turning on the thermal manikin to make the thermal manikin work in constant skin temperature control situation, making the thermal manikin reach a stable state; measuring temperature of each area of apparel surface, eliminating infraredtransmission power of fabric to achieve outer surface temperature of the apparel; calculating inner surface temperature of the apparel according to the outer surface temperature of the apparel; and according to the inner surface temperature of the apparel, the thickness of the air layer under the apparel is calculated by considering infrared thermal radiation between a human body and the appareland infrared transmission of apparel fabric. According to the method, the thickness of the air layer under the apparel can be measured more accurately.