Central South University

Hui Liu

Chao Chen

Yanfei Li

Zhu Duan

Jin Qin

Shi Yin

Haiping Wu

Liyuan Chai

Qingwei Wang

Zhang Lin

Xiaobo Min

Qingzhu Li

Shuqin Dong

Rui Yang

Chengming Yu

Lei Zhang

Guangxi Yan

Chengqing Yu

Zhihao Long

Fangfang Zhu

Weichun Yang

Haiying Wang

Huimin Yi

Lin Wu

Xudong Liu

Fenghua Shen

Kaisong Xiang

The present invention discloses a method and system for training a passenger distribution prediction model, and a method and system for guiding passengers. In an embodiment, the passenger distribution is intelligently sensed by means of the characteristics of temperature, humidity and COconcentration distribution changes in cars caused by passenger density changes, which avoids the problems of crowd flow and obscuration faced by passenger distribution detection conducted with images, and avoids the difficulty in floor intrusive transformation faced by passenger distribution detection conducted with pressure sensors; the passenger flow is guided by adjusting the brightness of lighting tubes in the cars, for example, the lighting tubes in areas with high passenger density are dimmed, and the lighting tubes in areas with low passenger density are brightened, to guide ordered flow of passengers toward areas with low passenger density. Further details are disclosed herein.

Training method and system for passenger distribution prediction model, and passenger guiding method and system

A method for preparing hydrogen sulfide from sulfur dioxide by electrochemical reduction includes electrochemically reducing sulfur dioxide absorbed in an aqueous solution into gaseous hydrogen sulfide with a membrane electrode, resulting in efficient and selective conversion of the sulfur dioxide absorbed in the aqueous solution into the hydrogen sulfide to avoid a deactivation of a cathode due to colloidal sulfur produced on the cathode and adhesion onto a surface of the cathode, wherein the method is carried out at ambient temperature and normal pressure without addition of a reducing agent, having no waste salts produced, and is simple in operation, and is convenient for large-scale application.

Method for preparing hydrogen sulfide from sulfur dioxide by electrochemical reduction

The present invention discloses an interior air quality monitoring and ventilation control method and system for a train. The interior air quality monitoring and ventilation control method for the train comprises: acquiring multiple groups of interior and exterior air quality detection data; acquiring interior and exterior air comprehensive evaluation index Qand Qby using the experimental data; training an exterior fresh air volume control model if Q≥Q, or else training an interior air purification control model; detecting the interior and exterior air quality detection data; acquiring the interior and exterior air comprehensive evaluation index Qand Qby using the detection data; if Q≥Q, calling the exterior fresh air volume control model to obtain the required ventilation volume level and controlling a ventilation system with the output result; otherwise, calling the interior air purification control model to obtain the required ventilation volume level and air purification device power level, controlling the ventilation system and the air purification device with the output results. The present invention can apply suitable ventilation control strategies according to different degrees of air quality, to achieve a health guarantee for the interior air quality of the high-speed train under the conditions of energy conservation and environmental protection.

Interior air quality monitoring and ventilation control method and system for train

The present invention discloses a train compartment vibration monitoring method and vibration signal feature library establishment and application methods. The non-intrusive train compartment vibration monitoring method only obtains vibration signals of a main measurement point in a train compartment during actual monitoring. The method accurately and truthfully reflects the relationship between the position of a vibration source and the phase offset and amplitude attenuation, can monitor the vibration of an unknown vibration source, and can identify the abnormal vibration to provide a basis for abnormal vibration processing. The method can realize the reconstruction of vibration source signals on the basis of only measuring the vibration signals of the main measurement point, so as to realize the real-time update of multiple variable vibration signal feature library; and the multivariable vibration signal feature library can provide a data basis for vibration signal optimization decomposition, vibration signal image identification, abnormal vibration signal identification, etc.

Train compartment vibration monitoring method and vibration signal feature library establishment and application methods

A health early warning system for passengers on a train in an outdoor air polluted environment and a method thereof are provided. The system comprises an air quality monitoring station data acquisition module, a train data acquisition module, a train air pollution prediction module, and a train air environment early warning module; the air quality monitoring station data acquisition module acquires data of air quality monitoring stations and uploads the data to the train air pollution prediction module; the train data acquisition module acquires data of the train and uploads the data to the train air pollution prediction module; the train air pollution prediction module performs short-term prediction on air pollution of the train and uploads a result of the short-term prediction to the train air environment early warning module; and the train air environment early warning module performs early warning on the health of the passengers on the train.

Health early warning system for passengers on a train in an outdoor air polluted environment and method thereof

A health protection system and a method for passengers on a train in a polluted indoor environment are provided. The health protection system includes a basic data acquisition module, an outdoor air quality prediction module, an indoor air quality prediction module, and a ventilation strategy generation module, wherein the basic data acquisition module acquires basic data; the outdoor air quality prediction module predicts outdoor air quality of the train; the indoor air quality prediction module predicts indoor air quality of the train; and the ventilation strategy generation module generates a ventilation strategy and achieves health protection of the passengers on the train. The method includes: predicting indoor and outdoor air quality data information of the train according to the acquired indoor and outdoor air quality data of the train; and generating a corresponding ventilation strategy according to the indoor and outdoor air quality data of the train.

Health protection system for passengers on a train in a polluted indoor environment and method thereof

The present invention discloses a method and system for protecting the operation of a train under an air pollution environment. The method for protecting the operation of the train under the air pollution environment comprises: acquiring multiple groups of roof and underbody air quality detection data; solving comprehensive roof and underbody air evaluation indicator Qand Qby using the experimental data; calculating an exposure time Tof roof components and an exposure time Tof underbody components; training a calculation model of pollutant condition about roof component and a calculation model of pollutant condition about underbody component; detecting roof and underbody air quality detection data after the train stops; calling the trained roof and calculation model of pollutant condition about underbody components, and solving roof and underbody component pollution levels, and performing corresponding cleaning on the roof and underbody components according to the solved roof and underbody component pollution levels. The present invention evaluates the exposed status of key components of the train under the air pollution environment, and takes relevant protective measures to ensure normal service lives of the key components of the train.

Method and system for protecting operation of train under air pollution environment

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Hunan, China

Hui Liu