DR 606-34N

(National Patent: ZL202221211448.4 ZL202210536280.2 ZL202311751673.6) 
【Scope of Application】: 
During the process of simulating heat exchange between the human body, clothing, and the environment, by analyzing the relationship between the temperature difference between the skin surface of the warm body dummy and the environmental temperature, as well as the non-evaporation heat dissipation rate per unit area of the body surface, the thermal resistance of the clothing can be calculated; 
It truly simulates and comprehensively tests the cold and hot comfort performance of the clothing. 
【Related Standards】: 
GB/T 18398-2001 "Test Method for Thermal Resistance of Clothing - Warm Body Dummy Method" 
GB/T 38426-2019 "Determination Method of Thermal Resistance and Usage Temperature of Sleeping Bags" 
ISO 15831 "Clothing - Physiological Effects - Measurement of Thermal Insulation Performance by Thermal Dummy" 
ASTM F 1291 "Standard Experimental Method for Measuring Thermal Insulation of Clothing Using a Heating Dummy" 
ASTM F 1720 "Standard Test Method for Measuring Thermal Insulation of Sleeping Bags Using a Warm Body Dummy" 
EN 342:2017 "Standard for CE-PPE Certification of Cold Protection Clothing" and other. 
【Technical Characteristics】: 
1. The model fully simulates a real person, with joints such as shoulder joints, elbow joints, and knee joints. These joints can simulate walking movements, more realistically simulating the thermal resistance performance of the clothing under the posture of a real person's body; 
2. 34 independent heating zones, each heating zone has an independent temperature control system and data acquisition system, which can meet the testing of the clothing for the whole body or local areas; 
3. The temperature control system adopts high-precision point-like temperature sensors and evenly distributed heating elements closely adhering to the surface of the model; 
4. The data acquisition system uses RS485 communication method, which can frequently and in real time collect various test data of the environment and the human model; 
5. The warm body dummy has three postures: standing still, lying flat, and dynamic walking. The static and lying flat posture is mainly for testing the thermal resistance performance of quilts and sleeping bags, while the standing still and dynamic walking postures are for clothing testing; 
6. The operation control system adopts an external connection method, which can conveniently select between static and dynamic states for testing. The overall framework uses high-strength aerospace aluminum profiles, servo motors drive the running mechanism, and can precisely set and control the movements and amplitudes of the model; 
7. An independent wind speed control system can provide various wind speed requirements for the test; 
8. The centralized control platform of the full stainless steel structure integrates all electrical components, facilitating installation, debugging, and maintenance; 
10. The independently developed software application system is simple and easy to operate, capable of performing thermal energy control, fault monitoring, system parameter setting and calibration, real-time data display and data recording, and displaying the test results intuitively, etc. 
【Technical Parameters】: 
(1) Sweating Warm Body Dummy 
1. Dummy size: 1.75 ± 0.15 m; 
2. Dummy surface area: 1.8 ± 0.3 m2; 
3. Number of zones: 34; 
4. Number of temperature sensors: 37; 
6. Maximum temperature difference between adjacent zones: 3℃ 
7. Weight: approximately 50 Kg; 
8. Power supply: AC 220V; 
9. Temperature resolution: 0.1℃; Temperature measurement accuracy: 0.2℃; 
10. Maximum output power: 1200W/m2; 
11. Power measurement accuracy: ±2%; 
13. Thermal resistance range: 0.6 - 6.5 clo; 
14. Accuracy of warm body dummy: The measured thermal resistance value under the reference definition condition (0.78 ± 0.03) clo; 
15. Repeatability of warm body dummy: The variation coefficient of the results of three repeated tests of the same matching clothing is no more than 3%; 16. Repeatability of the warm body dummy: The coefficient of variation of the test results of the same garment in different laboratories is no more than 8.5%; 
17. Measurement and collection frequency: 10 times per minute; 
18. Movement steps: The default is 45 ± 2 steps per minute (30 - 60 steps adjustable), with a stride of 63 ± 10 cm; 
19. Arm swing: The default is 45 ± 2 times per minute (30 - 60 times adjustable), with a swing amplitude of 53 ± 10 cm; 
20. Standing, lying down, standing or dynamic.

(2) Motion simulation control system 
1. The warm body dummy has three postures: static standing, lying down, and dynamic walking. The static lying-down posture is mainly for testing the thermal resistance performance of quilts and sleeping bags, while the static standing and dynamic walking postures are for clothing tests; 
2. The motion control system adopts an external connection method, allowing for convenient selection of either static or dy

(3)Temperature and Humidity Monitoring System and Wind Speed Sensor 
Three temperature sensors, three humidity sensors, and two wind speed sensors were placed within the warm body dummy area. They were positioned at non-equal height intervals 0.5 meters away from the dummy. During the placement of the dummy and when putting on clothes, the sensors could be moved away by rotating the shaft. The temperature sensor has an accuracy better than 0.2℃; the humidity sensor has an accuracy better than 5%; and the wind speed sensor has an accuracy better than 0.05m/s.   

(4) Wind Speed Simulation Control System 
By using the application software, the variable frequency motor can be controlled to provide wind speeds ranging from (0 to 8) m/S for the testing environment.

(5)System Centralized Control and Computer Software Program Application Platform
The system centralized control and computer software program application platform has an all-stainless-steel structure as its outer shell. All electrical components are centrally installed, facilitating installation, debugging and maintenance. This software application system is independently developed by our company. The software is simple and easy to operate, and it can perform functions such as thermal energy control, fault monitoring, system parameter setting and calibration, real-time data display and data recording, and intuitive display of test results.

(6) Walk-in climate chamber (optional equipment):
1. Internal volume: at least (4×4×3) m³;
2. Floor area: 4.5m×5.5m (installation space should be no less than 7.5m (length) × 7.5m (width) × 3.5m (height));
3. Operating environment temperature range: -20℃ to 50℃ (below zero degree freezing environment, the human model must be preheated);
4. Temperature measurement and setting accuracy: ±0.2℃;
5. Operating environment humidity range: 15 to 95% RH;
6. Humidity measurement accuracy: ±5%;
7. Operating environment wind speed range: (0.15 to 8) m/s; Note: This wind speed is the external wind speed of the climate chamber, and the wind speed of the climate chamber itself should not exceed 0.1 m/s.
8. Wind speed measurement accuracy: ±0.05 m/s;
9. Power supply: 380V AC (±10%)  50±0.5Hz  45 KW

(7) Example of Application Software Interface

(8) Test Site Examples
climate chamber

Sample testing scenario

Sleeping bag testing scenario