Elevator Wireless Emergency Communication Technology Research And System Development

With the development of city society, the elevator has become an indispensable tool inour life; however, the elevator safety and maintenance seems to be doing is not good enough.In recent years, people have paid more and more attentions about the elevator safety. Aseveryone knows, when power failure or other emergencies happened in the elevator, our firststep is how to escape from the sealed space by the alarm, the contact with the outside world,elevator emergency communication system is particularly important.Elevator wireless emergency communication system is a new generation of elevator fiveparties device. This system will lift the Quartet calls (elevator car, elevator car top, elevatorcar bottom, Elevator machine room) to connect each other through a bus way, and thenthrough the GSM network to connect the Quartet with the duty room (elevator maintenancecompany, Quality Supervision Bureau) for wireless communication. If someone was trappedin an elevator car, they can push the elevator car emergency call button to make a call, whenthe call was established; the trapped people can speak to duty room staff on full duplex timely,reported the elevator status and trapped personnel location. During the rescue time, the rescueworkers can also get in touch with the trapped people in any time, knowing the interior of theelevator car and to appease the trapped people. This system consists of communication hostand extension, extension is readily available on the market Talkback products, without theneed for design; the host is what I need to do the main design. The main principle ofcommunication is to connect intercom through a GSM wireless network; the detection of thecall signal, what the GSM module can automatically dial the call establishing communication,audio link, and full-duplex talkback. After the communication, system would send aemergency message to people.After the design of product, which carried out a series of function test and performance test, the basic performance indicators have reached the design requirements; experimentsimulation of elevator installation environment test calls, five parties is very clear, thecommunication link is very stable and reliable. The study tested good communication systemis installed in the elevator actual environment, in the interior of the car field emergency calland stability test. The testing results show that the system call is clear, stable and reliable afterlong term work.