Fixing holes are formed around an opening of a housing. Holding members are each inserted into a corresponding fixing hole and are fixed to the housing by swaging. Two or more holding members are each provided with a corresponding protrusion member. Fitting holes and first insertion holes are formed around a central opening of a packing and the protrusion members are each fitted into a corresponding fitting holes. The packing is attached to the housing by fitting each of the protrusion members into the corresponding fitting hole. Fastening members are each inserted through a corresponding first insertion hole and a corresponding second insertion hole formed in a cover and are inserted into and fixed to holding members other than the above-described two or more holding members, so that the cover is attached to the housing.

Fixing holes are formed around an opening of a housing. Holding members are each inserted into a corresponding fixing hole and are fixed to the housing by swaging. Two or more holding members are each provided with a corresponding protrusion member. Fitting holes and first insertion holes are formed around a central opening of a packing and the protrusion members are each fitted into a corresponding fitting holes. The packing is attached to the housing by fitting each of the protrusion members into the corresponding fitting hole. Fastening members are each inserted through a corresponding first insertion hole and a corresponding second insertion hole formed in a cover and are inserted into and fixed to holding members other than the above-described two or more holding members, so that the cover is attached to the housing.

In one embodiment, a system includes a vehicle, one or more probes coupled to the vehicle, and a controller. The vehicle is operable to traverse a distance. The one or more probes are operable to measure wind pressure and generate one or more wind pressure measurements. The controller is operable to receive the one or more wind pressure measurements from the one or more probes, determine a wind angle relative to the vehicle using the one or more wind pressure measurements, and determine a wind speed relative to the vehicle using the one or more wind pressure measurements and the wind angle.

In one embodiment, a system includes a vehicle, one or more probes coupled to the vehicle, and a controller. The vehicle is operable to traverse a distance. The one or more probes are operable to measure wind pressure and generate one or more wind pressure measurements. The controller is operable to receive the one or more wind pressure measurements from the one or more probes, determine a wind angle relative to the vehicle using the one or more wind pressure measurements, and determine a wind speed relative to the vehicle using the one or more wind pressure measurements and the wind angle.

A method for evaluating damage and providing passenger assistance in emergency events involving mass transit vehicles (MTVs), especially emergency events occurring in a tunnel, includes: (a) providing, on-board the MTV, at least one unmanned aerial vehicle (UAV), each UAV including a controller comprising a processor and memory; (b) determining, by the controller of the UVA while on-board the MTV in the tunnel, a change in at least one of the following: an acceleration, positive or negative, greater than a predetermined acceleration, an angle greater than a predetermined angle, a temperature greater than a predetermined temperature, and the presence of particles, gas or both greater than a predetermined concentration; (c) in response to the determining in step (b), the UAV separating from the MTV and becoming airborne within the tunnel; and (d) following step (c), executing, by the UAV, flight movement of the UAV within the tunnel.

A ventilation system for a subway platform includes: an air supply duct through which air supplied to the interior of a subway platform flows; an exhaust duct through which air supplied to the outside of the subway platform flows; a plurality of air supply hoods that supply air in the air supply duct to the interior of the subway platform and are arranged to be apart from each other in a direction in which air flows through the air supply duct; and a plurality of exhaust hoods that exhaust air from the subway platform together with pollutants in the subway platform to the exhaust duct and are arranged to be apart from each other in a direction in which air flows through the exhaust duct, wherein the air supply hood is arranged to be inclined downward at an angle toward one side of the subway platform to supply air.

A ventilation system for a subway platform includes: an air supply duct through which air supplied to the interior of a subway platform flows; an exhaust duct through which air supplied to the outside of the subway platform flows; a plurality of air supply hoods that supply air in the air supply duct to the interior of the subway platform and are arranged to be apart from each other in a direction in which air flows through the air supply duct; and a plurality of exhaust hoods that exhaust air from the subway platform together with pollutants in the subway platform to the exhaust duct and are arranged to be apart from each other in a direction in which air flows through the exhaust duct, wherein the air supply hood is arranged to be inclined downward at an angle toward one side of the subway platform to supply air.

Providing an alert to a user of a multi-passenger mode of transport includes receiving first biometric information about the user and a destination for the user; receiving second biometric information about the user; based on the second biometric information, determining the destination for the user; based at least in part on the destination for the user, determining a first location within the multi-passenger mode of transport; and transmitting a first command to control a first display device proximate to the user, based on the first location.

Providing an alert to a user of a multi-passenger mode of transport includes receiving first biometric information about the user and a destination for the user; receiving second biometric information about the user; based on the second biometric information, determining the destination for the user; based at least in part on the destination for the user, determining a first location within the multi-passenger mode of transport; and transmitting a first command to control a first display device proximate to the user, based on the first location.

A disclosed controller is configured with logic that, when executed, performs actions to extend landing gear of a maglev vehicle. The actions include receiving a height control target value and transitioning between a standby control state and an active control state. The controller maintains the landing gear in a fixed position when the controller is in the standby control state, and the controller controls extension and retraction of the landing gear according to the height control target value when the controller is in the active control state.