The invention relates to a bus system (1) comprising a control unit (2) and at least one bus node (3.1, 3.2, 3.3). The control unit (2) is allocated at least two data communication interfaces (2.1, 2.2) which are respectively designed to transmit and receive data. The at least one bus node (3.1, 3.2, 3.3) comprises a bus coupler having at least two data communication interfaces (3.11, 3.12; 3.21, 3.22; 3.31, 3.32) respectively designed to transmit and receive data. The control unit (2) and the at least one bus node (3.1, 3.2, 3.3) are respectively connected together via their data communication interfaces and corresponding two-point connections (8) to form a ring topology. The bus coupler of the at least one bus node is designed to directly and without delay transmit, and thus forward, data received at one of its at least two communication interfaces via its other data communication interface.

A control panel is used to monitor events within a security system or other automation system. In the event an intruder enters a physical location, the intruder may attempt to damage the control panel to disrupt its operation. One or more sensors of the control panel may detect disruption in the operation of the control panel. Example sensors may detect an impact force, sudden acceleration, removal from a mounted location, or disruption of communication with an input/output element, such as a display device. When an event is detected at the control panel itself, the control panel can send a signal to a remote service provider, and the remote service provider can follow-up with the customer. The control panel and/or remote service provider may also determine when the control panel loses partial or complete power loss to identify the disruption as a potential crash-and-smash entry.

A control panel is used to monitor events within a security system or other automation system. In the event an intruder enters a physical location, the intruder may attempt to damage the control panel to disrupt its operation. One or more sensors of the control panel may detect disruption in the operation of the control panel. Example sensors may detect an impact force, sudden acceleration, removal from a mounted location, or disruption of communication with an input/output element, such as a display device. When an event is detected at the control panel itself, the control panel can send a signal to a remote service provider, and the remote service provider can follow-up with the customer. The control panel and/or remote service provider may also determine when the control panel loses partial or complete power loss to identify the disruption as a potential crash-and-smash entry.

A system for monitoring the integrity of a plurality of ground conductors has a plurality of monitors, with a different monitor associated with each ground conductor. Each monitor includes a voltage sensor which monitors voltage on a closed circuit of the monitor. Upon the voltage sensor sensing an unexpected voltage, a transmitter of the monitor issues an “alarm” signal, which may be wireless (e.g., being sent using LoRaWAN protocol). The transmitter may issue other signals, including a periodic “heartbeat” signal to confirm continued operation of the monitor, and a “movement” signal to indicate movement of the monitor. The monitor may be GPS-enabled, in which case each signal may include the GPS coordinates of the monitor. The signals issued by the transmitter may ultimately be analyzed by an operator via a user interface platform, which may simultaneously display information regarding two or more of the plurality of monitors.

A system for monitoring the integrity of a plurality of ground conductors has a plurality of monitors, with a different monitor associated with each ground conductor. Each monitor includes a voltage sensor which monitors voltage on a closed circuit of the monitor. Upon the voltage sensor sensing an unexpected voltage, a transmitter of the monitor issues an “alarm” signal, which may be wireless (e.g., being sent using LoRaWAN protocol). The transmitter may issue other signals, including a periodic “heartbeat” signal to confirm continued operation of the monitor, and a “movement” signal to indicate movement of the monitor. The monitor may be GPS-enabled, in which case each signal may include the GPS coordinates of the monitor. The signals issued by the transmitter may ultimately be analyzed by an operator via a user interface platform, which may simultaneously display information regarding two or more of the plurality of monitors.

A method and apparatus include a processor of an Internet router monitoring a parameter of messages between a security panel that protects a secured area and a central monitoring station of the secured area, detecting an interruption in the messages by comparing the parameter with a threshold value, and notifying at least the central monitoring station of the interruption via an e-mail or SMS message, wherein the interruption includes one of disconnection of the security panel, disconnection of the central monitoring station, and impersonation of the central monitoring station.

A method and apparatus include a processor of an Internet router monitoring a parameter of messages between a security panel that protects a secured area and a central monitoring station of the secured area, detecting an interruption in the messages by comparing the parameter with a threshold value, and notifying at least the central monitoring station of the interruption via an e-mail or SMS message, wherein the interruption includes one of disconnection of the security panel, disconnection of the central monitoring station, and impersonation of the central monitoring station.

A system for detecting an intrusion of at least one of a monitoring fiber and a detector comprises a sensor having a closure monitor and an intrusion monitor, the closure monitor including a signal generator and at least one detector attached to the monitoring fiber. The signal generator transmits signal light such that the monitoring fiber receives the transmitted signal light and reflects a portion of the signal light via the at least one detector to the closure monitor and transmits a non-reflected portion of the signal light. The intrusion monitor receives the transmitted non-reflected portion of the signal light, and monitors the non-reflected portion of the signal light to detect transient changes in the non-reflected portion of the signal light indicative of at least one of a vibration, a motion and a handling of at least one of the monitoring fiber and the at least one detector.

The invention relates to a device (1) and a corresponding method for monitoring a two-wire line (2), in particular a two-wire line (2) of a fire protection system. The device (1) comprises a passive terminating component (10) for terminating the two-wire line (2), wherein the passive terminating component has a chargeable energy storage (12), a constant current source (20) for providing a measuring current (I1) to the passive terminating component, a voltage detection unit (30) for detecting a voltage curve (V1) at output terminals (4, 6) of the two-wire line (2), a control unit (40) for controlling the constant current source (12) and for evaluating the detected voltage curve, the control unit (40) being configured to separately determine a series resistance (RL) and a parallel resistance (PS) of the two-wire line (2).

The invention relates to a device (1) and a corresponding method for monitoring a two-wire line (2), in particular a two-wire line (2) of a fire protection system. The device (1) comprises a passive terminating component (10) for terminating the two-wire line (2), wherein the passive terminating component has a chargeable energy storage (12), a constant current source (20) for providing a measuring current (I1) to the passive terminating component, a voltage detection unit (30) for detecting a voltage curve (V1) at output terminals (4, 6) of the two-wire line (2), a control unit (40) for controlling the constant current source (12) and for evaluating the detected voltage curve, the control unit (40) being configured to separately determine a series resistance (RL) and a parallel resistance (PS) of the two-wire line (2).