FR2850778A1 - Industrial and home automation device for alerting about factory risk, has receiver to receive alert signals from transmitter and interpret signals subsequently to provide alert, and alpha-numeric display to inform user about risk - Google Patents

Abstract

The device has signal transmitter (1) to transmit alert signals in the form of a carrier current into a low and medium voltage power grid (2). Receivers (3) installed within local premises surrounding risk sites receive the alert signals through a grid bias and interpret the signals subsequently. The receivers provide an alert by biasing a siren (13) and a flash lamp (14). An alpha-numeric display (17) informs user about the risk.

Description

Electricity- physical field

  (Industrial and home automation system for warning and prevention in risky factories, sites classified as SEVESO and natural risks) The present invention relates to an industrial and home automation device for warning and prevention in risky factories, sites classified as CEVESO and risks natural.

  Nowadays, the sirens of risky sites despite their 5 powers are barely audible and misinterpreted by the population. Many factors act on this failure, in particular the better insulation of buildings, the increase in noise pollution in built-up areas and the lack of information on the reasons for the alert. This home automation device 10 has for application in the fields of Sites classified SEVESO, Sites classified "AT RISK" Commercial and industrial Sites, domestic and various applications, large forest fires and the Prevention of floods or natural disasters.

  This device uses as a communication link and in a unidirectional way the low and medium voltage electrical energy network and the telecommunications network around the risk site. This process is carried out by carrier current by injecting an alert or prevention signal from the risk site on the energy and telecommunications network. Homes or warehouses equipped with this detector will interpret the signal, give the alert and intervene directly on electrical systems such as closing shutters or stopping ventilation systems.

  The originality stems from the fact that each person will be notified in real time at home through a bell, a flash lamp and at the same time all commercial, administrative and industrial premises. The nature of the risk will be indicated using the alpha-numeric display.

  - Noise pollution is reduced (compared to the old system) - 2 - Total prevention in real time - Taking into account the prevention of the deaf and hard of hearing (flash lamp indicator.

  -lm! iaoration of the quality of intervention.

  -direct intervention on electrical systems (shutters, ventilation shutters) The invention is described below using an example and references to the attached drawings in which: FIG. 1 is a representation of the diffusion the alert or test signal from the risk zone to the houses or other premises surrounding the risk site.

  FIG. 2 represents in detail a block diagram of the device making it possible to follow and analyze the interpretation of the signal.

  FIG. 3 describes the different stages of the pulse frame injected on the low and medium voltage energy network and on the telecommunications network.

  According to the figure: During an alert or a test: the transmitter called 20 signal injector (1) will transmit through the low and medium voltage power network and telecommunications (2), a signal to all the receivers (3a) (3b) installed in the premises or dwellings near the risk site.

  In FIG. 2: The signal injector (1) makes it possible to inject into the low and medium voltage energy network and onto the telecommunications network, a signal coded by carrier current that the receiver on the electrical network (3a) or the receiver on the electrical network (3b) will be able to interpret.

  The diagram (fig3) represents the frame: The signal is modulated by binary pulses (fig3). The 1 pulse longer than the following indicates the start of the frame and activates the signal processing (6) of the receivers (3a) and (3b). The 2nd and 3rd "tops indicate the priority of the risks (test or alert) and activate the warning (7) or test (8) lights simultaneously with the shutter shutter or ventilation system stop command (9) The last frame tops are used to indicate on the alpha-numeric display the nature of the risk as well as the trial or alert period Each pulse of the frame is separated from a silence serving as a separator with the following location. If the signal is present, it triggers a switchover in the receivers This information is compared and processed by the signal processing microcontroller (6) which will activate the test or alert procedure for the receiver.

  This signal superimposed on the electric or telephone voltage is of frequency around 200Hz so as to be able to cross without interruption and without disturbance the energy meter of a house 15 During the test period the receivers (3a) and (3b) are activated for 1 minute upon receipt of the top 3 of the coded frame (fig3).

  During the alert period, the receivers (3a) and (3b) are activated for 3 minutes upon receipt of the top 2 of the coded frame (fig3).

  When the coded signal is transmitted by the injector (1) to the receivers (3a) or (3b) via the energy or telecommunications network (2). The receiver (3a) will receive the signal through its power supply (4). The receiver (3b) will receive the signal through the telephone line (2).

  The receivers (3a) or (3b) will then process the signal (6). The test (7) and alert (8) indicators will keep the user informed if it is a test or an alert.

  The solid state relays (9) and (10) will trigger the shutter closing or the ventilation stop. They work in all or nothing. The choice of the static relay is to electrically isolate the receiver from any other electrical equipment.

  The siren acknowledgment processing device (11) is used to stop the siren during an alert using the push button (15) so as to limit the sound emission of the siren.

  The alpha-numeric display (17) will keep the user informed of the nature of the risk by scrolling through a message pre-recorded in the signal processing microcontroller (6) and corresponding to the top of the frame (fig3). - 4_ 2850778

Claims (4)

claims   1. Industrial and home automation system for alerting and preventing risky factories, SEVESO classified sites and natural risks. Including a signal injector (1) 5 placed on the risk site and warning and prevention receivers (3) installed in dwellings or premises surrounding the risk site. This device uses the low and medium voltage electrical energy network or the telecommunications network (2) in the vicinity of the hazardous site as a communication link, by injecting warning or prevention signals in the form of carrier current. receiver will recognize and interpret later.   2. Industrial and home automation system for alerting and preventing risky factories, sites classified as SEVESO and 15 natural risks according to claim 1, aims to be able to warn from the risky site in the event of prevention and industrial risk or natural, the population and the hard of hearing by the triggering of a siren and a flash lamp in their homes.   3. Industrial and home automation system for alerting and preventing risky factories, sites classified as SEVESO and natural risks according to claim 2, aims to be able to indicate from the risky site in the event of prevention and industrial or natural risk , the population and the 25 hearing-impaired by displaying the nature of the risk on the alphanumeric display (17) of the receiver unit (chemical explosion; fire at SEVESO site; Pollution; storm; safety device test, etc.). 4. Industrial and home automation system for alerting and preventing 30 risk factories and sites classified as SEVESO and natural risks according to claim 3, aims to intervene directly from the risk zone, on the closing of electric roller shutters (9) (protection of property and people) in order to avoid the effects of blowing 35 (deflagration of the windows), and on stopping the ventilation systems (10) which would slow down the arrival of toxic air in the dwellings.