How the new warm body dummy works

The new warm body dummy is a highly bionic test device, whose core working principle is to evaluate the thermal comfort of clothing, environment or equipment by simulating the thermal physiological characteristics of the human body. Compared with traditional dummies, the new design has made significant breakthroughs in heating system, sensing technology, control algorithm and bionic structure, and its working principle can be divided into the following key links:

1. Human thermal simulation technology

Distributed heating system

The use of multi-zone independently controlled heating units （such as flexible resistance wires, graphene heating membranes） to simulate the differences in metabolic heat production in different parts of the human body （trunk, limbs, head）。 For example, the torso area can be set to a higher power to match the core body temperature （about 37 ° C）， while the limbs have a lower power （about 33 ° C）。

Dynamic thermal regulation

The algorithm simulates the body temperature regulation mechanism （such as blood vessel constriction/dilation, sweating）， automatically adjusts the heating power according to changes in ambient temperature and humidity, and even integrates a "bionic sweating" system （simulating sweat evaporation by permeating liquid water through micropores）。

2. Intelligent sensing and feedback

High density temperature sensing network

Hundreds of miniature temperature sensors （accuracy ±0.1 ° C） are placed on the surface of the dummy to capture the temperature distribution on the body surface in real time and visualize the hot area through infrared thermal imaging technology.

Environmental parameter coupling

Synchronous monitoring of environmental temperature and humidity, wind speed, radiant heat and other parameters, combined with the dummy heat loss data, through the heat balance equation to calculate the clothing insulation value （Clo value） or the thermal stress index of the environment （such as WBGT）。

3. Adaptive control algorithm

Physiological model driven control

The built-in human thermal physiological model （such as Gagge two-node model） dynamically predicts and adjusts the heat production power of the dummy according to the preset activity （metabolic rate）， clothing thermal resistance and other parameters, so that the temperature fluctuation of the body surface is highly matched with the real person.

Machine learning optimization

The AI model is trained on historical test data to automatically compensate for differences in heat distribution caused by changes in posture （such as sitting, standing, and walking） and improve test repeatability.

4. Bionic structure and materials

Flexible skeleton and skin

The 3D printed elastic skeleton is used to simulate human motion posture, and the surface is covered with multiple layers of bionic skin （including thermal conductivity layer and heat insulation layer）， which can simulate the influence of subcutaneous fat distribution on heat conduction.

Phase change material integration

Phase change materials （such as paraffin wax） are embedded in local areas to simulate the process of the human body's response to environmental temperature changes through heat storage/release, improving the authenticity of dynamic thermal response.

5. Typical application scenarios

Extreme environment test: Simulate clothing protection performance in polar, high temperature and humidity environments.

Sports equipment evaluation: Analyze the breathability and moisture management of sportswear during dynamic activities （such as running and cycling）。

Medical equipment validation: Testing the long-term thermal comfort of surgical gowns and protective clothing.

Building environment optimization: Evaluation of heat distribution uniformity of air conditioning and heating systems.

Technological advantage

High precision: the body surface temperature control error is less than 0.5℃， which is better than 1-2℃ of traditional dummies.

Multi-physics coupling: synchronously simulates the interaction of heat, humidity, and force （such as clothing pressure）。

Scalability: Support modular design, can be customized children, the elderly and other special groups of models.

By integrating bionic engineering, the Internet of Things and artificial intelligence, the new warm body dummy is promoting the evolution of thermal comfort assessment from "static test" to "dynamic simulation", providing more accurate data support for clothing design and environmental optimization.

2025-03-19 16:06