Abstract:
A central address and programming unit designed to constitute a dialogue system with a plurality of fire alarm detectors in order to characterize an alarm, the place of the disaster, technical incidents, and defects in functioning of the fire alarm detectors which are dispersed over a site includes an electronic control unit B G , a control and display panel D A , an electronic programming unit C p  for interfacing the control and display panel D A  and unit BG to the electronic programming unit and a coupling loop A B  for interfacing the control unit B G  to the integrated circuit of the pickups (17) for the fire alarm detctors.

Description:
BACKGROUND OF THE INVENTION 
     Up to the present time, installations have been used which have a number of different smoke detectors dispersed over a site and these make detections by pinpointing a disaster and releasing a visual or sound alarm over the site. Certain improvements have been made and consist in linking these detectors to a central unit which records the alarm or the incident, but without being able to determine the exact place. In the latter case, it was necessary to localize the disaster by carrying out an inspection of all detectors of the installation. 
     SUMMARY OF THE INVENTION 
     The present invention permits resolving these disadvantages by connecting in parallel on the same panel the different detectors placed over the site and by processing the information issued from the integrated circuits contained in each pickup. 
     Thus, the address of the pickup and the nature of the information emitted by the latter is determined. The different information from different pick-ups forms a dialogue between the central unit and the pickups. 
     The subject of the present invention is a new address system designed to constitute a central information unit, permitting a dialogue with different smoke detectors furnished with integrated circuits. This central unit displays on a visualization panel the information relative to a disaster, defect in function, the place of the disaster or of the incident, the good functioning of the circuit, whatever the characteristics of the pickup may be. 
     The invention thus defined presents numerous advantages, in particular: 
     A centralized control of the functioning state of each detector; 
     A rapid localizing of the alarm; 
     A continuous operation of the system even in the case when one detector has become out-of-commission; 
     A memory for the incidents which have occurred during the detection period. 
     The invention called &#34;Central address and programming unit for fire alarm detector&#34; is characterized in that it has an electronic control unit comprising an integrated circuit of several bits associated with a control clock, a defect control device, electronic flip-flops, a zero reset, a multiplexer, a data switch, an address designation, a dialogue link; a loop module comprising an integrated circuit of several bits, external memory, transmission line analyzers, a zero reset, transistor interfaces; an electronic programming device fed by an autonomous source, a multiplexing circuit, its keyboard control, its transfer relays; a control and dialogue panel which shows dialogue, address information. 
     The invention will be better understood by means of the attached drawings, which are given only by way of a preferential embodiment. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a block diagram of the, functioning of the central address and programming unit of this invention. 
     FIGS. 2, 3, 4, and 5 are schematics showing the control circuit central power of the central unit of FIG. 1. 
     FIGS. 6 and 7 are schematics representing the &#34;loop&#34; circuit connected between the control circuit and the different smoke detector pickups. 
     FIGS. 8, 9, 10, 11, and 12 showing the programming circuit including address circuits. 
     FIG. 13 is a plan view of the front surface of the cabinet of the central unit showing the dialogue between the pickups or smoke detectors and the operator. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     By referring to FIG. 1, one finds the electronic organization of the systemof the central address and programming unit. 
     The control circuit B G  is connected on one side to the loop circuit A B  which plays the role of interface between the B G  circuit and the integrated circuits (17) of the different pickups. The connection between the loop circuit A B  and the pickups fed from transmission line T 1  and T 2 . 
     The integrated circuits of the pickups are connected in series. Upstream from the control circuit, the programming circuit C P  is shown, which constitutes an interface between the touch controls of cabinet D A  manipulated by the operator and the control circuit B G . 
     By referring to FIGS. 2, 3, 4, and 5, one finds the control circuit B G . This system is comprised of an integrated circuit of 8 bits, IC 21 . It is controlled by a clock Y 1  associated with capacitors C 210  and C 211  shown in the figure. Defects inherent in the clockare always controlled, according to FIG. 4, by an interface comprised of a transistor Q 25 , resistances R 217  and R 218 , and capacitors C 24  and C 25 . CR 21  represents an anti-return diode. 
     The materialization of the defect of the preceding system being appreciatedat level V 8  of the panel of FIG. 3. 
     The analysis of a fire alarm signal and its transfer, as well as the general functioning defect, are effected by IC 21  of FIG. 2 at the level of ports AN 2  and AN 3 . The clock Y 1  periodically emitspulses of 5 V of a duration of 200 microseconds at the level of ports PC 5  and PC 6 . These control pulses cross the circuit constituted by transistors Q 21  and Q 22  for positive voltage, and are analyzed by ports AN 2  and AN 3  of the integrated circuit IC 21 . The negative polarity being connected by means of resistances R 230  and R 260 . The integrated circuit IC 21  being connected to the loop module A B  by a 3-wire S O , S I , SL K  bus. 
     The feed control of the relay of FIG. 4 (low voltage) RTF assured by IC 21  at the level of port PC 4 . Between port PC 4  and the low-voltage relay, an interface is connected, which is comprised of transistors Q 23  and Q 24  in order to isolate IC 21  from the general power supply of 24 V. 
     In integrated circuit IC 21 , port PC 3  analyzes the mains voltage (24 V). 
     The analog port AN O  of circuit IC 21  is connected to the network by means of potentiometers R 213  and R 214  in order to feed port AN O  under 5 V. 
     Port PB 3  which pilots the alarm, is connected to the network by an interface which keeps the alarm under 5 V. This interface is comprised of transistor Q 211  which, associated with resistances R 226  and R 227 , controls the sound alarm relay. Port PC 7  which controls the sound alarm of the central unit, is isolated from the 24-V network andis fed under 5 V by the interface comprised of transistors Q 210 , Q 209  and resistance R 225 . 
     When the general alarm is sounded, its transfer is controlled by port PC 6  of IC 21 , which is isolated from the 24 V network by the interface comprised of transistor Q 28 , resistance R 222 . This interface connects port P 6  to the RAG relay control. 
     The control which informs a general fault is assured by port PC 5  associated with transistors Q 27 , Q 26  which play the role of interface with the RDG control relay. 
     In order to assure dialogue with the &#34;loop&#34; module AB connected to the pickups, the IC 26  flip-flop fed under 5 V is used. In this circuit constituting the dialogue, resistances R 242 , R 243 , R 244 , R 245 , fed under 5 V, constitute circuits for a remote resetting of the relays. 
     The reset to zero is assured by the circuit R 235  associated with capacitor C 290 . 
     The resistance R 240 , which connects the positive polarity of the 5-V circuit, constitutes, with resistances R 302  and R 312 , push-pull resistances. 
     Resistances R 236 , R 237 , and R 234  are push-pull impedances which short circuit the integrated circuit IC 21 . 
     The resistances R 233  and R 232  constitute isolation impedances. 
     The integrated circuit IC 28  connects IC 21  to the data bus IC 29  of FIG. 3 and is an integrated circuit multiplexer which controls the cabinet keyboard coding. 
     IC 22  is an integrated circuit which constitutes the logic of the central unit and controls the relays of the Loop module. 
     IC 23  is an integrated circuit which functions and completes or substitutes for IC 22 . It may be charged by 3 6-V storage batteries (AL) in case of a defect in the power supply. IC 24  in FIG. 5 is an integrated circuit connected in series with IC 21  and which has dialogue with this latter in order to pass information to it. IC 25  isan integrated circuit which completes circuit IC 24  in order to assure a permanent dialogue with an external computer. The integrated circuit IC 30  assures the control of clock Y 2  which controls IC 24 . This clock is associated with capacities C 212 , C 213  according tothe diagram known to the expert. 
     The assembly of other non-indexed resistances and capacities comprising equilibrating or filtering impedances. 
     By referring to FIGS. 6, and 7 and according to one important characteristic of the invention, one finds the electronics of loop AB connecting the logic unit (17) of the fire detectors connected in parallelby a transmission line T 1 , T 2 . 
     The loop module is comprised of an integrated circuit IC 11  with 8 bitsin FIG. 6, disposing of external memories IC 12  and IC 13  of FIG. 7. 
     The integrated circuit IC 11  is run by clock Q z  controlled by the circuit comprising a transistor Q 130 , capacities C 19  and C 18 , diode D 14 , and resistances R 119  and R 118 . All theintegrated circuits IC 11 , IC 12 , IC 13  are uncoupled by capacitors C 111 , C 112 , C 100  and each is fed by a 5-V voltage. 
     The integrated circuit IC 11  has its zero reset assured by the circuit comprising resistance R 121  and capacitor C 112 . 
     On this electronic unit, short-circuit analysis is made by the circuit comprising resistance R 66  and transistors Q 120  and Q 122  of FIG. 6. 
     Above 350 mA between B 1 , B 2  and ground, the integrated circuit IC 11  controls the opening of transistors Q 120 , then Q 122 . The transistor Q 122  constituting an interface. Likewise, when there is a short circuit between transmission lines T 1 , T 2  and ground,resistances R 111  and R 117  serve for isolation impedances. Transistors Q 125  and Q 126  of FIG. 7 constitute the interfaces ofintegrated circuit IC 11  which analyzes at the level of its port AN 3  and controls the voltage fed to B 1  by its port PA 7  (level of 350 mA). 
     The power supply for the entire circuit is assured by a voltage of 21.5 V, regulated by transistor Q 123  associated with resistance R 110 , diode D 122  which delivers a voltage of 21.5 V, on loop B 1 , B 2 . 
     The transmission line circuit is analyzed by IC 11  at the level of points PA 4  and PA 5 . 
     In order to isolate the loop module from the electromechanical relays of FIG. 6 which control the &#34;actions&#34;, 8 interfaces constituted by transistors Q 11  to Q 116  are connected between integrated circuitIC 11  and its relays. These 8 interfaces permit assuring the operation of the electromechanical relays under 24 V without problem for integrated circuit IC 11 . 
     For example, transistor Q 11  is controlled by port PB O  of IC 11  which is run to it by any other point in the central address unit. 
     Circuits RR 1 , RR 2 , RR 3 , RR 4  constituting the resistancenetwork associated with transistors Q 11  to Q 116  playing the role of interface. The integrated circuit IC 11  has 256 lines permitting receiving 8 lines of different information or rather 7 information lines and emitting one command. 
     By referring to FIGS. 8, 9, 10, 11, and 12, the entire electronic programming unit CP which pilots the control circuit BG can be found, and this is driven by controls found on the cabinet panel D A  where they appear in the form of contact keys. FIGS. 8, 9, 10, 11, 12 are associated with each other: lengthwise, part of FIG. 8 being joined to the left part of FIG. 9, the right part of FIG. 9 being joined to the left part of FIG. 10 and the latter being fit with FIG. 12. The programming circuit is uncoupled from the electronic control unit by means of capacitors C 41 , C 42 , C 43 , C 44 , C 45 , C 46 . 
     The impedances R 41  and R 42  are so-called push-pull resistances. Resistance R 43  associated with diode LED D 41  shows the functioning when placed under voltage. 
     Transistors Q 41 , Q 42  of FIG. 8 associated with resistances R 45 , R 46  and with diode D 42  detect defects in functioning. In the latter case, diode LED D 42  is illuminated. When the circuit isoperational, the battery is recharged by means of the 24-V network, whose load voltage is regulated at 3.6 V by resistance R 49  associated with transistor Q 44  and with diode D 47 . In the total absence of supply current, the sound alarm KL 1  and diode D 42  are excited bymeans of transistor Q 43  and diode D 44  to indicate that the central unit is out-of-commission. 
     In order to check the good functioning of these alarm levels, the circuit comprised of transistors Q-hd 46, Q 47 , connected to resistances R-hd 412, R 413 , R 414  and to capacitor C 47  is utilized by means of the coded keyboard (FIG. 9). 
     The integrated circuit IC 41  of FIG. 10 is a multiplexer which controlsthe display of data placed in the external panel AF 1 , AF 2 , AF 3 . These data essentially concern the address of the detector as a function of the fire alarm. Integrated circuit IC 42  of FIG. 11 is a multiplexer which runs the fault display for a detector as a function of the address of the latter. This display is indicated in FIG. 13 by AF 4 , AF 5 , AF 6 . 
     Diodes LED D 48 , D 49 , D 50 , D 51 , D 52 , D 53 , D 54 , D 55 , D 56 , D 57  constitute luminous signals which are controlled by integrated circuits IC 41  and IC 42 . These diodes connected to each display panel indicate: 
     for D 48  a defect in the power supply 
     D 49  test detector 
     D 50  line transfer defect 
     D 51  fire alarm 
     D 52  technical alarm 
     D 53  general fire alarm 
     D 54  general fault 
     D 45  line defect 
     D 46  localized fault 
     D 47  out-of-commission. 
     These LED diodes appear on the outer panel of the cabinet. 
     RE 1 ,RE 2 , RE 3 , RE 4 , RE 5 , RE 6 , RE 7 , RE 8  are relays that represent the control keys of the keyboard, whoseelectronic control is assured by integrated circuits IC 43  and IC 44  of FIG. 12. The system is supplied by a 6-volt safeguard batteryAD. 
     FIG. 13 shows the visualization of the information system issued from the detectors and taken up by the &#34;loop&#34; module and the electronic control unit, as well as the controls formulated by the programming circuit. 
     Signal V 1  indicates the placing under voltage of the entire device. 
     Signal V 2  indicates a defect in power supply, while V 3  informs &#34;out-of-commission.&#34; 
     Signal V 4  indicates the detector test and V 5  a defect in the transfer. 
     Each fire detector is named by a code at the level of keyboard C L . 
     As soon as this code is recorded, signals ZA 1  and ZA 2  indicate the address and the nature of the alarm, or of the defect at the level of signal V 6  fire alarm, V 7  general fault, V 8  technical defect, and V 9 , safeguard defect. 
     IM represents the printer. 
     As a function of the detector named and localized by its address at level ZA 1  or ZA 2 , signal: 
     V 10  indicates the site of the fire alarm, 
     V 11  indicates the site of the technical alarm, 
     V 12  indicates the site of the fault, 
     V 13  indicates the out-of-commission alarm. 
     The designations E 1 , E 2 , E 3 , E 4 , indicate, respectively, the signal tests, the controls of auxiliary sources, the resetting of the system, and the stopping of the sound signals.