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452 results about "Access line" patented technology

Synchronous control circuit and method for rail-vehicle-rescue emergency braking

PendingCN107235041AAchieving Brake Synchronization RequirementsAvoid the "discount" problemBrake safety systemsIsolation valveEmergency rescue
A rail vehicle rescue emergency braking synchronous control circuit, which is connected in parallel to the normally closed contact of the linked relay and the emergency braking relay on the emergency braking train line circuit of the lead car of the rescue vehicle and the faulty vehicle, and is used for rescue trains Rebuild the emergency braking train line circuit after connecting with the faulty train; at the same time, configure the brake isolating switch on the head car of the rescue vehicle and the faulty car, connect the rescue head and tail relay and brake isolation relay in parallel, and the emergency braking of the driver's station The normally closed contact of the button is connected in series to the circuit of the emergency brake train line, and the brake isolation solenoid valves of all vehicles are connected in parallel to the circuit of the emergency train line, and the power is supplied by the circuit of the emergency train line. The valve realizes the synchronous control of emergency braking under rescue conditions. The control method of the present invention is safe and reliable, and the synchronization is precise, which saves more than 3 million yuan in procurement costs for the entire project, saves equipment installation space, and ensures installation and maintenance space for the configuration of full-motion vehicles + driverless vehicles.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Multi-line station interface

An interface device is disclosed for simultaneously connecting access lines to stations. Any one of the stations answers an incoming call from any one of the access lines. The interface device has line access modules each connected to a respective access line, and station access modules each connected to a respective station. A switching network selectively connects at least one of the line access modules to at least one of the station access modules. The switching network is controlled by a control unit in accordance with a predetermined sequence stored in the control unit or selected signals received from the stations through the station access modules. A speech synthesizer provides an audio signal to the stations indicating status the interface device, as well as available features and options of the interface device and the access lines. The control unit provides internal bridging of station access modules to the same access line module. In a private mode, the control unit prevents further connections and interruptions of a private connection between a station access module and an access line module. In response to a ring signal from one of the access lines, the control unit provides a ringing tone to all or selected stations which have no calls in progress, and optionally provides a line waiting tone to the stations which have calls in progress.
Owner:TELEPORT COMM GROUP
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