As we all know, in order to detect and report elevator failures in time, people in the industry have developed an elevator remote
monitoring system and put it on the market several years ago. However, after many years, this
system has not been popularized and applied in the market. The reason is that, for the user unit, the cost of initial investment and later use and maintenance is too high; for the maintenance unit, the users who need to install the remote
monitoring system must be relatively large or important users. It is better to send people to stay to solve the problem in a timely and effective manner. Therefore, the users and maintenance units are not very enthusiastic about it, making the
system like a "chicken rib", thus losing the basis for large-scale promotion and application
[0003] In the past, the elevator
alarm device was the alarm bell installed on the top of the car. Since it is located in the elevator shaft, the distance from which the bell is transmitted to the outside of the shaft is very limited. The relevant staff cannot guarantee
effective response to emergency calls, and the alarm effect is not ideal.
There are two commonly used alarm methods now. One is to use the five-party
communication device installed in the car and the duty room or
service desk in the building (group) provided by the elevator manufacturer to connect the communication cable from the car to the elevator. The car is connected to the duty room or
service desk through the
machine room, and the corresponding button in the car can be pressed to realize the
direct communication between the terminal installed in the car and the terminal installed in the duty room or
service desk. The limitation is that the communication distance should not be too long, preferably in the same building, otherwise the call effect is not very good, and even cannot work effectively; the second method is for some users who use the virtual
telephone network, they can An internal telephone is installed in the cabin, and through the allocated address, directly dial the designated alarm duty phone to call the police. Obviously, this method is only suitable for large-scale users who have opened a
virtual networkThe
common point of the above two methods is that the alarm objects are all on-duty staff of the user unit rather than the elevator professional maintenance personnel. There are two issues to consider here: one is for those who do not use the
virtual network. How can the elevator management staff work far away, or users who cannot install a five-party
communication device for other reasons, realize emergency alarm? Moreover, this problem is ubiquitous in small and medium-sized cities and remote areas; another problem is that if the duty officer is not on duty for some reason, or is not on duty at the
alarm device because he is dealing with other things, the emergency call will be unanswered. , even if the personnel on duty still need to contact the professional elevator maintenance personnel after receiving the alarm, objectively prolonging the rescue time
Theoretically speaking, after an ordinary fixed telephone is installed in the car and connected to the public
telephone network, that is, an outside telephone, the trapped personnel can directly call the elevator maintenance personnel according to the publicized call number, which is the easiest way for emergency alarm. In this way, on the one hand, the maintenance personnel can rush to the scene to carry out rescue at the first time, and on the other hand, it can avoid the
anxiety caused by the trapped personnel who cannot communicate directly with the rescue personnel, or even the danger caused by aggressive behavior. However, this method is basically not used in
actual use, because someone may use it to make non-alarm calls, which will add extra expenses to the manager, or someone may call the police for no reason or even maliciously harass out of
curiosity. Interfere with the normal work of the elevator maintenance personnel, thus forcing the manager to stop, and ultimately make it useless