The present application provides a virtual reality-based derailment accident passenger comfort degree monitoring system and method, wherein the system comprises a train dynamics calculation module, a train operation state virtual simulation module, a six-degree-of-freedom motion platform, a train seat, a head-mounted display, a human body monitoring sensor system and a monitoring data storage terminal. The system establishes a database of the injury degrees of passengers with different ages under the train derailment; the test cost is low, the safety coefficient is high, and the repeatability of the test conditions is good, wherein the comfort degree test data of the passengers under the same derailment inducement can be repeatedly obtained; the safety risk in the actual test is eliminated, so that the authenticity of the test result is ensured, and the test cost is low and the repeatability is high.

The present application provides a virtual reality-based derailment accident passenger comfort degree monitoring system and method, wherein the system comprises a train dynamics calculation module, a train operation state virtual simulation module, a six-degree-of-freedom motion platform, a train seat, a head-mounted display, a human body monitoring sensor system and a monitoring data storage terminal. The system establishes a database of the injury degrees of passengers with different ages under the train derailment; the test cost is low, the safety coefficient is high, and the repeatability of the test conditions is good, wherein the comfort degree test data of the passengers under the same derailment inducement can be repeatedly obtained; the safety risk in the actual test is eliminated, so that the authenticity of the test result is ensured, and the test cost is low and the repeatability is high.

Disclosed is a gradient information acquisition method comprising: a speed measured value acquisition step in which a measured value of the speed of a rail vehicle is acquired; a speed calculation step in which a calculated value of the speed of said vehicle is found using an equation of movement including a parameter indicating the gradient of the path of travel of said rail vehicle; a parameter value acquisition step in which a parameter value is found of a function indicating said gradient, for which parameter the difference of said measured value of the speed and said calculated value of the speed is a minimum; and a gradient information acquisition step of finding the gradient of said path of travel, based on the parameter value of the function indicating said gradient that was acquired in said parameter value acquisition step.

Disclosed is a gradient information acquisition method comprising: a speed measured value acquisition step in which a measured value of the speed of a rail vehicle is acquired; a speed calculation step in which a calculated value of the speed of said vehicle is found using an equation of movement including a parameter indicating the gradient of the path of travel of said rail vehicle; a parameter value acquisition step in which a parameter value is found of a function indicating said gradient, for which parameter the difference of said measured value of the speed and said calculated value of the speed is a minimum; and a gradient information acquisition step of finding the gradient of said path of travel, based on the parameter value of the function indicating said gradient that was acquired in said parameter value acquisition step.

Disclosed is a foundation unit for supporting a structure, the foundation unit provided in a plurality of parts, arranged to be coupled together before use, wherein the foundation unit is arranged to be at least partially buried in, and to receive, material.

The invention relates to a sound diffusion system embedded in a railway vehicle and comprising: a plurality of groups of speakers distributed in the cars, each group of speakers being located in a respective diffusion zone of the railway vehicle; a control device of the speakers configured to broadcast generic sound signals via the different groups of speakers; and at least one reception device, each reception device being associated with a single group of speakers and being able to receive a control signal from a control device outside the railway vehicle, the control device being configured, upon reception of a control signal by one of the reception devices, to broadcast a specific sound signal solely via the associated group of speakers.

The invention relates to a sound diffusion system embedded in a railway vehicle and comprising: a plurality of groups of speakers distributed in the cars, each group of speakers being located in a respective diffusion zone of the railway vehicle; a control device of the speakers configured to broadcast generic sound signals via the different groups of speakers; and at least one reception device, each reception device being associated with a single group of speakers and being able to receive a control signal from a control device outside the railway vehicle, the control device being configured, upon reception of a control signal by one of the reception devices, to broadcast a specific sound signal solely via the associated group of speakers.

A train control system enables rapid, reliable, and verifiable association of a mobile component carried by an operator with at least one of a device, feature, or short range transceiver located on one or more locomotives of one or more consists in a train. The train control system may include a mobile component configured to be carried by an operator from one of the locomotives to another in the one or more consists. The at least one of a device, feature, or short range transceiver and the mobile component may be configured to communicate with each other wirelessly when brought within a threshold distance or less from each other. The mobile component may be configured to exchange a unique identifier with each locomotive automatically or upon an action of the operator when the operator brings the mobile component to within the threshold distance or less of each of the one or more locomotives. The train control system may be configured to limit communication of wireless control commands or diagnostic information from a lead locomotive such that the commands or diagnostic information are communicated only to others of the one or more locomotives that have been verifiably identified as being associated with the lead locomotive by exchange of the unique identifier with the mobile component carried by the operator.

The invention relates to a sound diffusion system embedded in a railway vehicle and comprising: a plurality of groups of speakers distributed in the cars, each group of speakers being located in a respective diffusion zone of the railway vehicle; a control device of the speakers configured to broadcast generic sound signals via the different groups of speakers; and at least one reception device, each reception device being associated with a single group of speakers and being able to receive a control signal from a control device outside the railway vehicle, the control device being configured, upon reception of a control signal by one of the reception devices, to broadcast a specific sound signal solely via the associated group of speakers.

The invention relates to a sound diffusion system embedded in a railway vehicle and comprising: a plurality of groups of speakers distributed in the cars, each group of speakers being located in a respective diffusion zone of the railway vehicle; a control device of the speakers configured to broadcast generic sound signals via the different groups of speakers; and at least one reception device, each reception device being associated with a single group of speakers and being able to receive a control signal from a control device outside the railway vehicle, the control device being configured, upon reception of a control signal by one of the reception devices, to broadcast a specific sound signal solely via the associated group of speakers.