Safety guarantee system and method and liquid nitrogen van-type refrigerated truck

• Main Authors: LIN ZHANG, DU HONGBIN, LI YANG, YI SHUDONG, LIU FUXIANG, YU HUIJUAN
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2018
• Subjects: ACCESSORIES THEREFOR; ALARM SYSTEMS; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; HANDCUFFS; KEYS; LADDERS; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LOCKS; MOTOR VEHICLES; ORDER TELEGRAPHS; PERFORMING OPERATIONS; PHYSICS; SAFES; SIGNALLING; SIGNALLING OR CALLING SYSTEMS; TRAILERS; TRANSPORTING; WINDOW OR DOOR FITTINGS

The invention discloses a safety guarantee system and method and a liquid nitrogen van-type refrigerated truck. The safety guarantee system includes a safety door, a magnetic contact sensor, a magnetic lock, an oxygen concentration sensor, a controller and an alarm unit. The safety door is arranged inside a compartment door, and the magnetic lock is used for locking the safety door. The oxygen concentration sensor is arranged in a compartment, and the oxygen concentration sensor, the magnetic contact sensor, the magnetic lock and the alarm unit are connected with the controller in a signal mode. The oxygen concentration sensor is used for monitoring the oxygen concentration in the compartment, and the magnetic contact sensor is used for judging the opening state of the compartment door. When the compartment door is opened, the controller determines whether a real-time oxygen concentration value in the compartment is lower than the preset oxygen concentration value, if yes, the alarm unit issues an alarm messa