# US 10,480,139 B2 · Stampede preventing method for pedestrian passage in confined space of subway > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,139 B2 - Document ID: US10480139B2 - Status: Granted - Kind: B2 - Application number: 16/343,773 - Filed: 2017-11-07 - Published: 2019-08-15 - Granted: 2019-11-19 - Earliest claimed: 2016-11-08 - Assignees: China University of Mining and Technology; Jiangsu Xinchuang Safety Technology Research Institute Co., Ltd - Applicants: China University of Mining and Technology; JIANGSU XINCHUANG SAFETY TECHNOLOGY RESEARCH INSTITUTE CO., Ltd. - Inventors: Fubao Zhou; Chun Liu; Zhongyi Man - Web page: https://patentgrep.com/patent/US10480139B2 ## CPC - E01F 13/04: movable to allow or prevent passage {(E01F13/12, E01F15/12 take precedence; removing part of barrier for occasional passage E01F13/024; gates for allowing passage through fences E06B11/02)} - B61B 1/02: General arrangement of stations and platforms including protection devices for the passengers {(B61B1/005 takes precedence)} - E21F 11/00: Rescue devices or other safety devices, e.g. safety chambers or escape ways (breathing aids for curative purposes A61H31/00; respiratory apparatus A62B7/00; breathing apparatus for accidentally buried persons A62B33/00) - G06Q 10/0635: Risk analysis of enterprise or organisation activities - G06Q 50/40: Business processes related to the transportation industry (shipping G06Q10/083) - G08B 21/02: Alarms for ensuring the safety of persons - E01F: ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE - B61B: RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR (lifts or hoists, elevators, escalators, moving walkways B66B) - E21F: SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract A stampede preventing method for a pedestrian passage in a confined space of a subway. Pedestrian flow sensors are arranged on a pedestrian passage, where the pedestrian flow sensors are connected to a control unit by means of data transmission lines, the control unit is connected to stampede preventing devices and top ends of the stampede preventing devices are connected to movable walls and handrails; the pedestrian flow sensors transmit a pedestrian number and crowdedness that are monitored in real time; the control unit analyzes signals of the pedestrian flow sensors according to a system program, and determines whether crescent buffer space areas need to be opened in the pedestrian passage; the control unit issues different expansion commands according to different degrees of crowdedness; and the stampede preventing devices control the movable walls and the handrails to start contracting to form the crescent buffer space areas. ## Claims ### Claim 1 A stampede preventing method for a pedestrian passage in a confined space of a subway, comprising the following steps: arranging pedestrian flow sensors on a pedestrian passage, wherein the pedestrian flow sensors are connected to a control unit by means of data transmission lines, the control unit is connected to stampede preventing devices by means of data transmission lines, and top ends of the stampede preventing devices are connected to movable walls and handrails; transmitting, by the pedestrian flow sensors, a pedestrian number and crowdedness that are monitored in real time on the pedestrian passage to the control unit by means of the data transmission lines during operation; analyzing, by the control unit, signals of the pedestrian flow sensors according to a system program, judging the level of pedestrian crowdedness on the ground, and judging, according to the level of pedestrian crowdedness, whether crescent buffer space areas need to be opened in the passage; determining, according to the data monitored by the pedestrian flow sensors, when it is crowded and a stampede accident may possibly occur, issuing, by the control unit, different expansion commands according to different degrees of crowdedness; and controlling, after receiving the commands of the control unit, by the stampede preventing devices, the movable walls and the handrails to start contracting, so that two originally parallel walls are recessed toward both sides to form the crescent buffer space areas, and then the maximum bearable pedestrian flow of the passage is instantaneously increased and stampede accidents are prevented. ### Claim 2 (depends on 1) The stampede preventing method for a pedestrian passage in a confined space of a subway according to claim 1, wherein the pedestrian crowdedness may be divided into: three levels comprising Overcrowded, Crowded, and Uncrowded. ### Claim 3 (depends on 2) The stampede preventing method for a pedestrian passage in a confined space of a subway according to claim 2, wherein the Overcrowded means that more than 5 people stand in one square meter, the Crowded means that 3 to 5 people stand in one square meter, and the Uncrowded means that fewer than 2 people stand in one square meter. ### Claim 4 (depends on 1) The stampede preventing method for a pedestrian passage in a confined space of a subway according to claim 1, wherein the stampede preventing device comprises a hydraulic cylinder, a supporting wall, and a retractable curtain, a cylinder tube of the hydraulic cylinder is fixed to a wall of the crescent buffer space area, and a piston rod end of the hydraulic cylinder is fixed to the movable wall. ### Claim 5 (depends on 4) The stampede preventing method for a pedestrian passage in a confined space of a subway according to claim 4, wherein the movable walls are separate cuboids that are connected by means of the retractable curtains to form a straight line shape or a circular arc shape.