Electro-mechanical and electronically controlled access devices are described for automatically controlling passage between two areas, and where a plurality of such access control devices may be ganged or clustered to provided additional throughput and directional control, including stacking a plurality of access control devices side by side within a cluster. Each access control device contains multiple rotatable and moveable door panels. The door panels are controlled by various drive mechanisms to enable passage through the device, while ensuring by the use of sensors that door panels avoid touching subjects as they traverse the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed from time to time. At any instant in time while being traversed, the flow through each device is unidirectional. Multiple devices within a cluster can be directionally controlled according to traffic, demand, time of day, or other factors.

Electro-mechanical and electronically controlled access devices are described for automatically controlling passage between two areas, and where a plurality of such access control devices may be ganged or clustered to provided additional throughput and directional control, including stacking a plurality of access control devices side by side within a cluster. Each access control device contains multiple rotatable and moveable door panels. The door panels are controlled by various drive mechanisms to enable passage through the device, while ensuring by the use of sensors that door panels avoid touching subjects as they traverse the device. The direction of flow through a device according to these embodiments is electronically controlled and may be changed from time to time. At any instant in time while being traversed, the flow through each device is unidirectional. Multiple devices within a cluster can be directionally controlled according to traffic, demand, time of day, or other factors.

A device for covering at least part of a container using a tarpaulin. The device includes a rod to deploy the tarpaulin across the container and an actuator. An arm extends between the actuator and the rod to allow the actuator to rotate the rod, the arm having an arm first end coupled to the rod and an opposed arm second end. The rod is coupled to the container so that the rod second end is movable relative to the container.

A device for covering at least part of a container using a tarpaulin. The device includes a rod to deploy the tarpaulin across the container and an actuator. An arm extends between the actuator and the rod to allow the actuator to rotate the rod, the arm having an arm first end coupled to the rod and an opposed arm second end. The rod is coupled to the container so that the rod second end is movable relative to the container.

A drive device for a hatch, in particular for a tailgate, comprising a cable, which is connected at one end to a cable pulley, which is configured to wind or unwind the cable according to the direction of rotation of the cable pulley, wherein the cable pulley is connected to a first superordinate assembly, such as a vehicle body, and which is connected at its other end to a second superordinate assembly, such as the hatch, which is pivotably attached relative to the first superordinate assembly, comprising an actuator, which is configured to drive the cable pulley, wherein the drive device furthermore comprises at least one deflection unit which has a deflection roll over which the cable runs between the cable pulley and the hatch.

A control arrangement for an entrance system has one or more movable door members and an automatic door operator for causing movements of the one or more movable door members between closed and open positions. The door members comprise one or more swing doors. The control arrangement comprises a controller and a plurality of sensors. Each sensor is connected to the controller and is configured to monitor a respective zone at the entrance system for presence or activity of a person or object. Each sensor has an active mode and an inactive mode, wherein the sensor consumes no electric power in the inactive mode or substantially less electric power in the inactive mode than in the active mode. The controller is configured to determine a current operational state of the entrance system among a plurality of possible operational states, and selectively cause at least one of the sensors to be in its active mode or in its inactive mode depending on the determined current operational state of the entrance system.

A control system for a door includes: a controller; a door motor configured to be operatively connected to the controller; an object sensor configured to be operatively connected to the controller and to detect a presence of an object; and an operation sensor configured to be operatively connected to the controller and to detect movement of a door, and wherein the controller is configured to send a operation signal to the door motor to cause the door motor to operate when the controller detects both: a signal from the object sensor indicating that the operation sensor has detected the presence of and object; and a signal from the operation sensor indicating that the operation sensor has detected movement.

A control system for a door includes: a controller; a door motor configured to be operatively connected to the controller; an object sensor configured to be operatively connected to the controller and to detect a presence of an object; and an operation sensor configured to be operatively connected to the controller and to detect movement of a door, and wherein the controller is configured to send a operation signal to the door motor to cause the door motor to operate when the controller detects both: a signal from the object sensor indicating that the operation sensor has detected the presence of and object; and a signal from the operation sensor indicating that the operation sensor has detected movement.

A sensor system for a door is includes a door configured to provide selective access between a first area and a second area; a door controller for controlling whether the door can open or be in a closed and locked position; a motion sensor for detecting motion in an area proximate to the door, the motion sensor configured to be operatively connected to the door controller; an object recognition sensor for recognizing objects in an area proximate to the door and proximate to the area where motion sensor detects motion, the object recognition sensor configured to be operatively connected to the door controller.

The present invention discloses a skylight operating system of a modular data center, so as to timely respond to a firefighting requirement of the modular data center to reduce occurrence of firefighting-related accidents. The skylight operating system comprises: an electric skylight; a firefighting environment index monitoring device arranged inside the modular data center; a monitoring and interacting device arranged in a monitoring room outside the modular data center, and connected with the electric skylight and the firefighting environment index monitoring device, the monitoring and interacting device adapted for receiving monitoring information of the firefighting environment index monitoring device, and opening the electric skylight upon determination that a firefighting-related issue occurs inside the modular data center.