Structural principle of automotive air conditioning comfort dummy (HVAC)

For a long time, the comfort evaluation of automobile air conditioners mainly draws on the evaluation method of air conditioner comfort, and there is no recognized car air conditioner comfort evaluation system. In addition, when evaluating the comfort of automobile air conditioners (hvac) at home and abroad, most of the evaluation indexes of human thermal comfort are used for cfd simulation calculation. However, this method involves a large number of numerical calculations, and the result is not very accurate. It cannot accurately evaluate the physical state of the tested person, and cannot achieve stable controllability.

The automotive air-conditioning comfort dummy (HVAC) can simultaneously measure the thermal conditions of various parts of the human body in the external environment, so as to accurately evaluate the environmental factors inside the car and effectively avoid errors caused by individual differences between people.

An automotive air conditioning comfort dummy (HVAC) includes a prosthesis, a sensing element, a data collector, a data processing unit and a data storage unit. The dummy body is located at the shoulders, hips, knees, elbows and ankles. Equipped with joints; each part of the prosthesis surface is equipped with sensing elements, the sensing elements are connected with the data collector, the data collector is connected with the data processing unit, and the data processing unit is connected with the data storage unit. The sensor element includes four kinds of sensors, namely temperature sensor, air flow sensor, humidity sensor and radiation intensity sensor. Each group of 4 sensors is arranged in a matrix, and multiple groups are arranged in various parts of the prosthesis shell.

The shell material of the prosthesis is non-heated fiberglass. The interface connecting the data processing unit to a single computer is a standard rs232 interface, or it is transmitted through a wireless network device Ethernet.

The two parts of each joint are connected by a positioning pin shaft and a positioning sleeve, and the positioning pin shaft is fixed from the hole end of the positioning sleeve through the joint connecting piece fixed with the joint.

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