Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

The teachings of the present disclosure relate to bus systems. Various embodiments thereof may include bus coupling units, for example a bus coupler comprising: four ports comprising input/output connections to which bus cables of a two-wire bus are connectable, wherein both electrical energy and data are transmissible via both bus cables. The first port and second port are bus coupler-internally electrically conductively connectable by means of a first connection path. The third port and fourth port are bus coupler-internally electrically conductively connectable by means of a second connection path. The first connection path and second connection path are bus coupler-internally electrically conductively connectable by a bridge path.

Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

Provided is a sensor network system including sensor master devices (15A to 15D) which receive detection information obtained by sensors (11A to 11F) through wireless communication, a data server (17) which acquires the detection information from the sensor master devices (15A to 15D) through power line communication, and notification devices (13A, 13B) which receive notification information from the data server (17) to perform notification, in which the sensor master devices (15A to 15D) are connected to the sensors (11A to 11F) and the notification devices (13A, 13B), and the data server (17) determines an object to be notified in accordance with, for example, a detection position which is detection information for at least one of an object to be notified and notification contents, on the basis of the acquired detection information.

A method for detecting a moving object in a scene includes providing sampled ultrasonic echo signals from the scene; determining echo envelopes of the sampled ultrasonic echo signals; determining differentials of successive echo envelopes for providing echo envelope differentials; determining the absolute values of the echo envelope differentials; and conducting a classification based on the determined absolute values of the echo envelope differentials for determining a relative movement of the moving object.

A sensor associated with a security system determines an electrically open circuit. An identifier identifies the open circuit, which may then be used to retrieve video data trained to a surveillance area associated with the sensor.

A sensor associated with a security system determines an electrically open circuit. An identifier identifies the open circuit, which may then be used to retrieve video data trained to a surveillance area associated with the sensor.

The current invention relates to a crew safety system for monitoring persons on a ship. The system comprising a plurality of wearables in a two way connection with at least one room module, said room module being in a two way connection with a central module. Said two way connection between each room module and the central module being provided by cabling of a fire safety system. The invention permits the monitoring of the status of a number of crew members and the environment they work in while being advantageously easy and inexpensive to install, run and operate.

The current invention relates to a crew safety system for monitoring persons on a ship. The system comprising a plurality of wearables in a two way connection with at least one room module, said room module being in a two way connection with a central module. Said two way connection between each room module and the central module being provided by cabling of a fire safety system. The invention permits the monitoring of the status of a number of crew members and the environment they work in while being advantageously easy and inexpensive to install, run and operate.