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The anti-theft system (1) comprises: one wearable device (2) by a user (U); one identification device (3) associable with an item to be monitored (O), the wearable device (2) and the identification device (3) being operationally connected to each other remotely in a wireless mode; control means (4) coupled to at least one of either the wearable device (2) or the identification device (3), the control means (4) comprising detecting means (5) configured to detect a distance between the wearable device (2) and the identification device (3) by detecting a mutual departure thereof; wherein: the wearable device (2) comprises first signaling means (6) configured to generate a first alarm signal (7) perceptible to the user (U); the identification device (3) comprises second signaling means (8) configured to generate a second alarm signal (9) broadcast in the surrounding environment (10) to the identification device (3); the first and second signaling means (6, 8) being configured to generate the respective alarm signals (7, 9) as a result of the departure of the wearable device (2) from the identification device (3).

The present invention relates to a portable remote control unit (10) which comprises an electric energy harvesting device (60). Said device, in turn, comprises a renewable electric energy source (28) and an electric energy storage device (30), said storage device (30) being configured to be charged with electric energy produced by the renewable electric energy source (28) to which it is connected. In accordance with the invention, the electric energy storage device (30) comprises a first electric energy storage element (30A), with a first storage capacity (Ca), and a second electric energy storage element (30B), with a second storage capacity (Cb), wherein the first storage capacity (Ca) is less than the second storage capacity (Cb). The first electric energy storage element (30A) and the second electric energy storage element (30B) are configured to be connected in parallel to the renewable electric energy source (28). The electric energy harvesting device (60) comprises a management unit (50) for selectively switching the electric energy flow produced by the electric energy source (28) to the second electric energy storage element (30B) when the first electric energy storage element (30A) has reached a nominal maximum voltage value (Vamax). The present invention also relates to a method of managing such a portable remote control unit (10).

[Problem] To provide a target display device capable of displaying the bow direction and direction of movement of a target that does not transmit its bow direction. [Solution] The device comprises an AIS receiver 2 that acquires AIS data including the positions of targets present around the ship, and a display control unit 4 that displays a symbol representing the target on a display unit 3 corresponding to the position of the target based on the AIS data. The display control unit 4 displays the symbol on the display unit 3 with the direction of the bow direction if the AIS data includes the bow direction of the target, and calculates the direction of movement of the target based on the history of the target's position and displays the symbol on the display unit 3 with the direction of movement if the AIS data does not include the bow direction of the target. [Selected Figure] Figure 1

The disclosure relates to a method for detection of electrical abnormalities in association with electrical equipment. The method comprises registering, by an acoustic sensor device during a calibration process, acoustic signals reflecting sound of the electrical equipment during normal operation thereof, and determining an energy content threshold value (Eth_A, Eth_B) for acoustic signals within at least one frequency band (ΔfA, ΔfB) to be monitored during monitoring of the electrical equipment following the calibration process, based on the acoustic signals registered within the at least one frequency band during the calibration process. The method further comprises the steps of detecting, among acoustic signals registered by the acoustic sensor device during monitoring of the electrical equipment following the calibration process, an acoustic pulse (P) within the at least one frequency band (ΔfA, ΔfB), and classifying the acoustic pulse (P) as an electrical abnormality associated with the electrical equipment when an energy content of the acoustic pulse (P) exceeds the energy content threshold value (Eth_A, Eth_B). The disclosure further relates to a computer program and system for detection of electrical abnormalities in association with electrical equipment.

[Problem] To obtain a fire detection system that can prevent the fire alarm receiver from mistakenly concluding that a fire has occurred when a transmitter is pressed down by mistake or by vandalism. [Solution] This fire detection system comprises a plurality of transmitters 1 and a fire alarm receiver 2 that receives fire signals FS output from each of the plurality of transmitters 1. The fire alarm receiver 2 determines that fewer than a certain number of transmitters 1 have been pressed down when it receives fire signals FS from fewer than a certain number of transmitters 1, and determines that a fire has occurred when it receives fire signals FS from a certain number or more of transmitters 1. [Selected Figure] Figure 1

[Problem] To provide a following vehicle proximity detection program and a following vehicle proximity detection system that can accurately determine excessive proximity of a following vehicle, which is equivalent to aggressive driving. [Solution] The following vehicle proximity detection program causes a computer to perform information processing that includes determining the approach of a following vehicle to the vehicle itself. The computer determines that an excessive proximity state applies when the condition for affirming excessive proximity is met (Yes in ST4) and the condition for denying excessive proximity is not met (No in ST3), and determines that an excessive proximity state does not apply when the condition for affirming excessive proximity is not met (No in ST4) or the condition for denying excessive proximity is met (Yes in ST3). The condition for denying excessive proximity includes the computer recognizing that at least one of the vehicle itself and the following vehicle has changed lanes. [Selected Figure] Figure 2