Less travel time In addition to reduction of waiting time, this group control system reduces travel time (from boarding a car to arriving at a destination floor) by individualized car allocation. More flexible car allocation Traffic conditions in a building change constantly. This group control system has a function to allocate the cars flexibly in response to the traffic conditions by sending the cars to a congested floor during periods of heavy traffic. Less irritating This group control system evaluates not only actual waiting time but also psychological waiting time by assessing the probability of full-load bypass and prediction error, etc. The optimal car allocation based on the evaluation minimizes irritation of all passengers. Less waiting time ΣAI-2200C reduces not only passengers' waiting time but also long-wait. The longer passengers wait for a car, the more they become irritated. More building space Destination Oriented Allocation System (DOAS) increases handling capacity. Compared to the conventional control system, DOAS allows reduction in car size and hoisting area. The space saved can be used effectively for other building facilities. More energy-saving With Mitsubishi Electric's smart control technology, when a passenger presses a hall call button, the system selects the elevator that best balances operational efficiency and energy consumption. Selection is based on each elevator's potential energy consumption according to its current location and passenger load.

Making elevators more friendly for all

	• Your waiting time or an increase in waiting time throughout the building • Expected travel time • The possibility of a car being bypassed due to a full load • The possibility of long waits caused by future calls • Energy consumption Determine the optimum car

Forecasting a near-future hall call to reduce long waits When a hall call is registered, the algorithm predicts a near-future call that could require long waits. Through evaluation of the registered hall call and the forecasted call, the best car is assigned. All cars work cooperatively for optimum operation. Maximizing operational efficiency and minimizing energy consumption This system selects the elevator in a group that best balances operational efficiency and energy consumption. Priority is given to operational efficiency during peak hours and energy efficiency during non-peak hours. Car allocation that maximizes operational efficiency does not necessarily translate to energy efficiency. A car uses energy efficiently when it travels down with a heavy load, or up with a light load. Accordingly, if multiple cars have the same traveling distance, this system chooses the car that requires the least energy. Through a maximum 10% reduction in energy consumption compared to our conventional system, this system allows building owners to cut energy costs without sacrificing passenger convenience. Initial conditions: non-peak period Car A: Parked at the 3rd floor Car B: About to leave the 9th floor with several passengers Car C: Parked at the 9th floor Car D: Parked at the 1st floor Under the conditions above, when a hall call is registered at the 6th floor to go to the 1st floor, waiting time and traveling distance will be the same regardless of whether car A, B or C responds to the call. In response to the call, the cars will operate in the following ways: Car A will travel up with no passengers and then down with only one passenger (requires more energy than car B). Car B will travel down with more passengers than car A (requires the least energy). Car C will travel down with no passengers and then down with only one passenger (requires the most energy). Car selection During non-peak hours when energy efficiency is prioritized, car B is selected. Selects optimum car allocation through "rule-set" simulation The neural network technology has enabled the system to continually and accurately predict the passenger traffic within intervals of several minutes. A high-speed reduced instruction set computer (RISC) runs real-time simulations using multiple rule-sets and the predicted passenger traffic to select the rule-set which optimizes transport efficiency. Simulation example and performance results of each rule-set The diagram below shows an example during a morning up peak time. An ideal rule-set is selected every few minutes according to the predicted traffic conditions.

Easing stress of waiting at elevator hall When a passenger has registered a hall call, the designated car is selected and the corresponding hall lantern immediately lights up. To inform the passenger of the car arrival, the hall lantern flashes on and off for three seconds before the arrival. [Without AIL] Passengers wait for cars wondering which car will arrive first. [With AIL] As passengers can see which car arrives next, they have enough time to reach the car even when carrying large baggage. Reducing passenger congestion Passengers tend to gather around the allocated car especially in heavy traffic like the morning time in an office building. The hall lantern of the second service car also lights up to disperse the passengers for smooth boarding. Enhancing user convenience If a passenger cannot get into an allocated car due to a full load, he/she needs to press the hall button again. If a fully loaded car leaves a floor, a hall call is registered automatically. *: This feature is also applicable to operation systems other than ΣAI-2200C. Signaling car arrival by sound An electronic chime at the elevator hall indicates that a car will soon arrive. *: This feature is also applicable to operation systems other than ΣAI-2200C. Reassuring passenger safety Voice guidance supports passenger safety and peace of mind when entering and exiting a car, in crowded cars and at the time of an emergency. *: This feature is also applicable to operation systems other than ΣAI-2200C.

Passengers register their destination floor using a hall operating panel before entering the elevator, eliminating the need to press the button inside the car. Furthermore, dispersing passengers by destination prevents congestion in cars and minimizes waiting and travel time. Enhanced Convenience [At elevator halls] Without DOAS Passengers wait for cars wondering which car will arrive first. Once a car arrives, regardless of the destination, passengers rush to get into the car. With DOAS When passengers enter a destination floor at a hall, the hall operating panel indicates which elevator to take. As passengers proceed to the assigned elevator, the car is on its way, and there is no hurry when the car arrives. [In Cars] Without DOAS Passengers need to press the destination floor button on a car operating panel. In a busy car, they have to fight through a crowd of bodies to reach the button. With DOAS A destination floor is registered when passengers enter it on the hall operating panel. Relax and enjoy the ride in the car. The car skips unnecessary stops and quickly takes passengers to the destination floor. Individualized Car Allocation Based on Travel Time This system evaluates passengers' travel time from registration of a destination floor at a hall to arrival at the destination floor and predicts their waiting time. As this system allocates an optimum car to each passenger on the basis of the predicted waiting time, passengers' travel time can be reduced. [Evaluating travel time] Without DOAS Since not all passengers press an up or down button at the hall, the system cannot evaluate their waiting time and travel time. With DOAS Since all passengers register the destination floor on the hall operating panel, the system can evaluate travel time of each passenger and allocate the optimum car for the passenger. [Reducing travel time] Without DOAS Cars make stops at every selected floor because destination floor is not considered for car allocation. With DOAS The individualized car allocation based on the destination floors leads to shorter travel time and fewer intermediate stops. [Improvement] Compared to conventional operation systems without DOAS, this system reduces the average waiting time at the time of congestion and long-wait.

Signal fixtures for DOAS Great care is taken in the design and manufacture of each and every elevator part to ensure a comfortable, user-friendly ride.

Click link below for details of signal fixtures for DOAS   Brochure (702KB)

Extended feature for more security The destination floor can be registered automatically after passing a card over a card reader at the security gate entrance. DOAS integrated with security gates provides a seamless journey and enhances security in the building. 1. Reducing congestion at elevator halls Our elevator group control system is linked to an access control system, enabling congestion during peak use hours to be reduced through efficient authorization at security gates and optimum car allocation. Without DOASWith DOAS integrated with security gate [Robust security × Improve operation efficiency] 2. Smooth operation (1) Pass a card over the card reader at the security gate. (2) Check the elevator number displayed on the indicator. Security gates screen out suspicious persons and block unauthorized access to the elevator hall. The assigned car is dispatched almost simultaneously with completion of card authentication, reducing passenger waiting time at the elevator hall. (3) Proceed to the entrance of the assigned car. (4) Enter the car when the doors open. A hall call has already been registered. The passenger does not need to press a hall button. If the passenger forgets or misses the assigned car, a call can be registered again using the hall operating panel. The destination floor has already been registered. The passenger does not need to press a floor button in the car. 3. Integrating security cards The ID card for the elevator can be combined with a building security pass, such as an employee ID card, to allow movement in the building using a single card. This integration creates a more convenient building security environment. [System configuration] Please refer to our brochure regarding elevator security solutions for details. Close collaboration with the security system supplier is required.

Extended features for more supportive operation Universally designed signal fixtures in elevator halls make elevators more accessible by all people, regardless of their age or ability. 1. Recommended equipment

	Touchscreen hall operating panel The intuitive LCD touchscreen is highly visible to all, including those who have color vision impairment.		Triangular prism hall lantern The distinctive protruding shape enables excellent visibility from the side.		Elevator number plate with braille The plate is mounted at an optimum height for braille readers and can be recognized easily by children and wheelchair users.		Car entrance destination floor indicator Passengers can check the destination floors when getting into a car.

2. Passenger support features [Car selection] This function enables passengers, especially those who have difficulty with mobility or require space such as wheelchair users, to specify the closest or relatively uncrowded car using the panel screen.

	1. Press the function icon.		2. Choose a car selection method (closest or less occupied car).		3. Register the destination floor.		4. The desired car is assigned.

[Audio guidance] Audio guidance assists visually impaired passengers to use the operating panel without difficulty. (1) Voice guidance mode Voice guidance through the hall operating panel gives step-by-step instructions on how to register a destination floor.

	1. Continuously press down on the touchscreen or press the accessibility button.		2. Voice guidance starts. Move the finger slowly on the screen to start announcement of service floors.		3. When you hear the desired floor, touch the screen to register the floor.		4. The assigned car is announced.

(2) Navigating sound Audible signals are emitted from the hall operating panel and the hall lantern to guide passengers to the proper elevator car.

		1. Hall operating panel continuously emits chime to lead passengers to the panel.			2. After a destination floor is registered, the hall lantern is activated and emits a chime to guide passengers to the proper car entrance.

			Click link below for details.  Leaflet (606KB)
	This smartphone application is designed for users to easily access an elevator equipped with the DOAS Integrated with Security System. Using a smartphone equipped with the application, users can change the call setting for their elevator and check the status of the elevator assigned to them. Once inside the secure area, users can call an elevator remotely from anywhere. The increased convenience and mobility bring more value to the building.

Convenient & Intuitive Enhanced Comfort & User Friendly This smartphone application delivers quicker and easier elevator use through convenient features, including ID Card Call and Smartphone Call for use before and after the security point in the building. The intuitive display design provides users with maximum support. The smartphone displays the elevator assigned and its current status and alerts the passenger as the elevator car approaches to assist smooth boarding. Additionally, this application allows users to set a call mode for Smartphone Call, for example, to request a wheelchair accessible elevator. Before the building security point In the building

Notes: - This function is an option for elevators equipped with the DOAS Integrated with Security System. - Occupant management is required for this function to confirm the users are in the building. (Users having left the building cannot call an elevator.)

Procedure ID Card Call function When a user takes an elevator from the lobby floor, the user can change the destination floor from the default floor for the ID card by using their smartphone before reaching the security point. Example: From 1F (lobby floor) to 8F (non-default destination floor) I have enough time to drop by the cafeteria on the 8th floor this morning. Building security point (card authentication) Before / After The office is on the 5th floor. The user runs the application. I have changed my destination floor to the 8th floor before reaching the security point. Assigned elevator number Building security point (card authentication) Before / After My elevator is A ! The user can check the elevator status by using Call Status function. The elevator displayed on the smartphone goes to the destination (8th) floor. I’m taking the elevator A for the cafeteria. A B C Car arrival alarm Advantages With the ID Card Call function, a user can change the destination floor from the office floor (default) to another (non-default) on their smartphone before a call for the default floor is registered at the security point, so the operation efficiency will not be compromised. Also, the user can arrive at the destination floor quickly, as registration for the non-default floor on the hall operating panel is not required.

Smartphone Call function A person who has passed the security point can call an elevator using their smartphone to go to another floor. Occupant management is required to confirm the user is in the building. (Users having left the building cannot call an elevator.) Example: From 3F to 7F There is a queue in front of a hall operating panel. I’ll call an elevator with my smartphone; otherwise I’ll be late for the next meeting. The elevator displayed on the smartphone goes to the destination (7th) floor. I can bypass the crowd and make it to the meeting. A B C Car arrival alarm Advantages With the Smartphone Call function, a user can get ahead of the crowd in front of a hall operating panel. A wheelchair user can call an elevator from their own smartphone without reaching a hall operating panel. It also features display of an assigned elevator and the operating status on the smartphones. The display and operation on a smartphone such as loading time for this system may differ depending on network environment. This system can be customized according to your needs. For further information, contact our local sales agent or click Contact Us.