Elevator dispatching control system

SEA offers elevator dispatching control system (EDCS) of own production on the base of GSM cellular network resources.

Functions of GSM elevator management system SEA EDCS

Main (standard) functions of the offered system include:

• Remote selection and visualizing of information about a condition of elevator technical objects in real time
• A possibility to provide an emergency voice channel between dispatcher and elevator cabin
• Operative managing of the main power contactor of the elevator cabin

Additional functions of the system are:

• analysis of the power supply state, notification of the deviation of the network parameters from the norm;
• security alarm system for opening the doors of the engine compartment of the elevator;
• management of local illumination of staircases;
• signaling of the elevator shaft door opening in the absence of a cabin on the floor;
• an alarm indicating the operation of the elevator safety chain;
• identification of the incoming alarm (from which elevator and which signal);
• algorithmic analysis of signal dynamics at control points of the elevator control station to detect malfunctions, failures or attempts to interfere with the operation of the elevator.

Accessories

The price for SEA elevator control system project is much lower than the average one on the market. Our proposed dispatching system consists of:

• Dispatcher console desk which is created on the base of a personal computer with installed software "Elevator-dispatching";
• A set of communication equipment, namely a dispatch terminal with a handset;
• Terminal "SEA ELEVATOR" that transfers information to the dispatcher console through a cellular network of GSM standard.

Characteristics that distinguish offered destination dispatch system from other analogs

Usage of two duplicate communication channels (voice GSM + internet GPRS)

Implementation of the adaptive work algorithm ensures flexible and sustainable use of all existing GSM network resources, such as its voice channel, CSD data channel and GPRS packet data channel. Thus, there is a possibility to optimize dispatch system operation in a different mode of use when GSM network is overloaded. Moreover, you can choose channels depending on their availability and suitability. Even if you have not an Internet channel or GPRS channel, the system will keep working.

Connection of old relay elevators

SEA EDCS can be integrated into infrastructure with not only modern elevators that are managed digitally, but it is also a suitable choice for management of older relay elevators.

Modern approach to system design on the base of wireless microprocessors

Embedded GSM microprocessor made by Quectel Wireless Solutions is used as a CPU and provides all the computing resources, generation, decoding and transferring of information signals in the SEA elevator group control system. Input and output ports of the STMicroelectronics auxiliary microcontroller manage executive devices and receive data from sensors. This technological "tandem" lets us achive the following:

• high reliability while maintaining remote unattended facilities,
• reduced energy consumption,
• optimized operatIon from an autonomous power supply source (maximum time).

Furthermore, using two independent and separately programmed controllers allows the most flexible and encompassing control of the whole range of remote monitoring and management tasks in real time, as well as elimination of system hangs.

Expansion of the system

A digital expansion bus with I2C and SPI interfaces can be reinforced with adapter cards that are being developed to satisfy specific customer needs. For example, you might want to install a managing board for additional contractors or automatic gathering of information from the metering device.

Advantages of the SEA elevator control system

• low cost, in comparison with existing analogs;
• low expenditures on the system exploitation;
• high reliability of equipment, no need of constant technical support;
• maintaining full functionality capabilities even in the absence of the Internet channel and GPRS-channel;
• terminal remains functional during electricity shortage (battery life is not less than 5 hours);
• possibility to control local illumination of staircases (additional option);
• visualization of data.

Savings

The economic effect from integrating our elevator control system project using microcontroller is due to:

• availability of information feedback about switching to the required mode, which allows reducing the response time of the dispatcher to an abnormal situation;
• capability to remotely control power supply to the elevator station, which in turn excludes conduction of on-site visits connected with the need to restart the equipment;
• protection of the elevator equipment as a result of monitoring power network conditions, combination of signals from sensors, and deciding on the termination of the operation in the event of an emergency;
• simplicity of installation and minimum requirements for routine maintenance (once a year).

Technical possibilities of the destination control system elevator terminal

Used communication channels (The terminal transmits information to the dispatch center through the GSM cellular network using GPRS packet data transmission. If the network is fully or locally overloaded and, consequently, the GPRS channel is not accessible from the mobile operator or if the Internet channel is not available in the control center, then the system automatically continues to work using only the voice (the highest priority) channel. The functionality of the system is 100% preserved).

Power supply (The terminal is powered by a network of alternating voltage 220 V, 50 Hz. The backup power source is a battery (battery life is not less than 5 hours)).

Design (Elevator car intercoms are vandal-resistant).