The disclosure relates to an alarm system comprising a plurality of detectors, each configured to detect an event in an environment and to emit an event detection signal, and a plurality of alarm signal emitters, each configured to emit at least one alarm signal in case of the detection of an event, the detectors and the emitters being linked to one another, wherein each of the emitters is configured to emit a plurality of distinct alarm signals. In case of the detection of an event by a first detector, a first identifier is assigned to at least one first emitter, the closest to the first detector out of the plurality of emitters, and an alarm generation instruction is transmitted to the first emitter with the first identifier, to activate the first emitter with a first alarm signal which is a function of the first identifier.

Thus there is provided an object retrieval apparatus for retrieving an object which has been lost which comprises a location module arranged to determine a location indication indicative of the location of the apparatus, a first body-coupled communication (BCC) device configured to establish a communication link with a second body-coupled communication device in a tag (3) attachable to the object, wherein the first BCC device is further configured to check the communication link at check times, the check times occurring at repeated intervals, and to generate a link status signal indicating whether the communication link is intact or not, a control module arranged to receive the link status signal, and, if the link status signal indicates a broken link, to set a flag, record the location as a loss recorded location and generate an alert.

Disclosed are systems and methods for sending emergency alerts. In some embodiments, sensors and wearable devices may trigger and send the emergency alerts and/or warning signals via available communication devices. Multi-media emergency alerts are also disclosed that include situational awareness information for effective and efficient emergency response.

Disclosed are systems and methods for sending emergency alerts. In some embodiments, sensors and wearable devices may trigger and send the emergency alerts and/or warning signals via available communication devices. Multi-media emergency alerts are also disclosed that include situational awareness information for effective and efficient emergency response.

A system for measuring a status of a detection device having a component transformable between a plurality of configurations includes a fiber optic cable for transmitting light. The at least one fiber optic cable defines a node arranged in communication with the component. A control system is operably coupled to the fiber optic cable such that scattered light reflected from the component and returned to the node is transmitted to the control system. The control system analyzes the scattered light to determine the configuration of the component.

A system for generating hazard alerts is provided. The system includes a plurality of sensor units including a plurality of sensors and a locating device, and a hazard analyzing (HA) computing device configured to communicate with the sensor units and including at least one memory device configured to store a scene definition, the scene definition defining a coordinate space of a worksite, and at least one processor configured to receive, from the sensors, a plurality of sensor measurements, receive, from the locating device of each sensor unit, at least one coordinate of the coordinate space, determine, based on the at least one coordinate, a location of the sensor unit during each sensor measurement, and determine, for at least a first sensor unit, that an alert condition is present based on the scene definition, the sensor measurements, and the determined location associated with the first sensor unit.

A server accesses a security system profile of a first security system. The security system profile identifies a plurality of sensors connected to the first security system. The server identifies a second security system based on at least a first sensor of the plurality of sensors coupled to the first security system. The server then generates a notification sharing profile for the first security system based on the security system profile. The notification sharing profile indicates that the second security system corresponds to the first sensor. A first event triggered by the first sensor causes a first notification to the second security system.

According to an aspect, there is provided an elevator communication system. The system comprises an ethernet bus, a safety master node communicatively connected to the ethernet bus and configured to communicate via the ethernet bus, and safety slave nodes communicatively connected to the ethernet bus and configured to communicate via the ethernet bus. The safety master node and the safety slave nodes are configured to communicate by using a time-triggered communication protocol. In the time-triggered communication protocol the safety master node is configured to send a polling diagnostic request message to the safety slave nodes by using a predetermined polling cycle.

According to an aspect, there is provided an elevator communication system. The system comprises an ethernet bus, a safety master node communicatively connected to the ethernet bus and configured to communicate via the ethernet bus, and safety slave nodes communicatively connected to the ethernet bus and configured to communicate via the ethernet bus. The safety master node and the safety slave nodes are configured to communicate by using a time-triggered communication protocol. In the time-triggered communication protocol the safety master node is configured to send a polling diagnostic request message to the safety slave nodes by using a predetermined polling cycle.

Disclosed are systems and methods for sending emergency alerts. In some embodiments, sensors and wearable devices may trigger and send the emergency alerts and/or warning signals via available communication devices. Multi-media emergency alerts are also disclosed that include situational awareness information for effective and efficient emergency response.