Closing the Oval Door.

Innovative Design of an Automatic Car - Door Opening System

To improve the existing mechanism for opening the car-door of a mobile shop vehicle, we first apply the contradiction matrix and the idealized design technique of the Theory of the Solution of Inventive Problems (TRIZ) as a reference to ameliorate an automatic car-door opening (closing) system, and find a scheme matching requirements in design. Next, a motor gear transmission system is designed...

Foot-operated door opener to eliminate the door handle as a source of contamination

AIM As door handles represent a transmission route for viruses and micro-organisms, a door opening and closing mechanism should be developed without manual operation. METHOD To solve the problem, a device for opening the door with the help of a foot pedal was built into the door leaf. RESULTS The design enables mechanical opening of the door with a foot pedal without manual operation. Subse...

Closing the revolving door for OR staff.

Research on Urban Rail Train Passenger Door System Fault Diagnosis Using PCA and Rough Set

Train passenger door is the key system for operation and maintenance on urban rail train. In this paper, we analysis passenger door system of urban rail train working process and establish the mathematical model. Firstly, we use the method of parameter estimation to get physical parameters of doors on different working condition. Then fault diagnosis experiment is done to train passenger door w...

A Method of Assessing the Energy Cost Saving from Using an Effective Door Closer

Door closers are widely used for doors in commercial buildings, not only for safety purposes but also for reducing the airflow through door openings. This study aimed to develop a method for quickly assessing, in the design phase, the heating and cooling energy cost saving from using an effective door closer. The method developed in this study consists of a stop angle model, airflow model, and ...