DE2230934C - Notification device, preferably for fire alarms - Google Patents

Description

- The invention relates to a reporting device, preferably for fire alarms, with at least one connected to a signal center Line parallel to each other between two conductors of the line connected detectors, each with a relay have organ that is made conductive in the event of a response and goes into self-retention, with on The reason for the increase in the line current caused by the relay element becoming conductive Sign.il/entrale a message signal can be generated. The Relay organ can here for example be a gas-filled one Cold cathode tube, a controllable rectifier or a similarly acting one with an eleki.ro mac'ictic relays or built with transistors Be circuit.

Such a reporting device is beki.int (German Patent 1081804). Here the organ of travel operates an optical one when it becomes conductive Display organ. If the response of the detector can be traced back to a fault cause, so can Depending on the faulty detector can be determined. However, if the detector remains disturbed, it is for the duration the fault, the reporting device is not operational. The object of the invention is to be an Mf,! deeinrichtung of the type mentioned above to create the possibility, in spite of a continuous, to restore the operational readiness of the device to the cause of the fault acting on a detector.

The task is mcidcciiifichiüiig the

type mentioned in that, according to the invention, the Re'.aisorgan each with a Dicde is connected in series that in each case to a switching point located between the relay element and the diode another relay element is connected. that all other relay organs can be briefly actuated together from the signal center, that the wide- Ren relay organs when they are actuated a potential biasing the diode in the Sptrrichtung on the Switch the shear point and that in the event of a Stromilur.ses by another relay organ this in Self-healing passes.

there is an alarm on the basis of the cause of a disturbance acting on a detector or an alarm situation that can be detected by the detectors. In the event of a malfunction, the other relay elements of all detectors are activated. The other relay organ of the detector that has responded. finds a current path through the conductive relay element of this detector, goes into locking mode and maintains the locking mechanism of the relay element. In this case, a potential is switched to the switching point between the relay element and the diode of the detector, which biases the diode in the blocking direction. This prevents the line current from flowing in spite of the fact that the relay element of the detector is still conducting: the detector is switched off. As a result of this shutdown, the other D -.- detectors, which have not responded, are in their: ^ r operational security. not affected. On renewed denials of a detector to increase the line current due to their headquarters in the signal again a Meldesigna is bewixvi ^c omit again '. can be generated.

In Finzelfälien ta can also be desirable, such Switch off detectors that have responded due to an alarm situation. For example, require Ionization fire detectors have an alarm signal after the disappearance of the Biand gases, as their sensitivity is due to the entry of the combustion gases is at first changed in such a way that after its disappearance it is slightly due to unfavorable physical properties Being able to address the circumstances again. In such cases, the reporting facility is in accordance with According to the invention, it is also possible to switch off the addressed detector in the event of an alarm, d. H. it fol.U a Shutdown every time a message signal is generated.

Refinements of the invention are explained in more detail below with reference to the drawings, in which exemplary embodiments are shown. It shows
Fig. 1 schematically shows a reporting device according to

the invention;

F i g. 2 parts of a detector of the pasture facility

according to FIG. i;

Fig. 3 parts of the signal center of the reporting device according to FIG. 1;

F i g. 4 shows a modified version of parts of the signal center of the reporting device according to FIG Fig. 1;

FIG. 5 shows parts of a modified detector of the reporting device according to FIG. 1 for use together with one formed according to FIG

smnoi7Antruii "·

6 shows a further reporting device according to FIG

Invention;

F i g. 7 shows a modified embodiment of parts of the signal center of the reporting device according to FIG Fig. 1 or 6, these parts being attached to Ji \ "teile dei in Fig. 3 shown can occur

Fig. 1 shows the principle ·. .1 Construction of a fire prevention device in which nl · n On the line system a larger number of mim 'w nuiiVtektorcn Del, Dei, De 3 .. DeN over cm 1 um. 10 with two conductors 12, 14 to a signal /, -m .Ie / are connected. The conductor IZ far c, - _s ιΐχτ the conductor 14 a positive potential ai. <"^. Μ ■> umlaüt

Be. <5 signaling device according to the invention conductor 11 a pusmvcs nmu, «, ... is in the case of the generation of a signal in line 10 a feed line 16 for m ile Dcte of the signal center determined in the usual way, whether gates Del, Del, Dei. .DeN sor ^ -Wu ⁿ e more

leiaisorgane as well as an impulslciter 18 for making leashes the other relay organs in more detail: u descriptive way.

Fig. 2 shows parts of a detector of the reporting device according to FIG. 1. The detector comprises example scisc ionization chambers, not shown, whose. 'ntLniial changes with smoke entry, and one light gc / cigen field effect transistor amplifier that luf (! around a deviation of the potential of the onisaiionskammern from the state of rest at signing a lower threshold value and / or when exceeding an upper .Schwellwerts this Poennals on a conductor 20 generates a potential that 'is sufficient to ignite a thyristor22, which is used as ielaiNorpan is provided. Becoming leading de. f'hvrisiDrs 22 leads 7U an early spring of the line triim in the I pus 52 of the line 10. and on the basis of these Morning is in the signal center Z (Fig. I) ; m Mcldesignal generated.

\ n Silence of the thyristor 22 could act as a relay organ mch a relay with self-locking contact or a tran- ·.! ■ orschaiter should be provided in the event of a Stream flows into self-maintenance

With deti> thyristor 22 a diode 24 is connected in series. At a connection point A between i * h \ ristor22 and diode 24 there is another relay. again in the form of a thyristor 26. By means of this, the potential of the feeder 6, which is higher than that of the conductor 12, can be switched to the circuit point A. In the event of a report. In the event of a malfunction and, if desired, in the event of an alarm, the addressed detectors can be deactivated. The other relay organs are continuously actuated, d. The ignition pulse is supplied to the control electrodes of the further thyristors 26 via the pulse conductor 18, to which the control electrodes of all thyristors 26 are each connected via a resistor 28. Only for those detectors that have responded and for which, accordingly, the 7Ti> transistor 22 is conductive. however, if a current can flow through the further thyristor 26, this will become self-holding. In the case of the detectors not addressed, however, the further thyristor 26 cannot fire despite the supply of an ignition pulse, so that these detectors are ready for operation again after the ignition pulse has disappeared. In the case of the detectors mentioned, the high potential at the Schahungspunkt A blocks the diode 24 and brings the previously flowing. Line current in conductor 12 disappears. The avoidance device is therefore ready for operation again after the detectors have been switched off.

If the relay element of the detector is designed, for example, as a thyristor 22 or from the relay zmtSelbsÜiäJteKOmski and cVmgcaiäB has a low resistance in the conductive state, an additional resistor 3 © can be used to ensure that there is actually a switch at switching point A. If there is a sufficiently high potential, the diode 24 must be blocked. The resistance in Ofer in those arm series circuit of Relaisnrgan (thyristor 22) and diode 24 m Rcthc mil the Relaäsorgan erägesenaitet, the intermediate "* bcn the SAE hakungspunki A and a conductor 14 el" f I inic IS In £ 3 If the with the relay organ in Rithe »c ** -.- th resistor 19 not yet the required for Ir: - *, Jcrstand of the detector

Has value, in that branch of the series circuit of RclaJsorgan and diode 24, which lies between the circuit point Λ and the conductor 12 of the line 10 and in which the diode 24 is located, a further resistor 32 can be connected in series with the diode 24.

The resistor 70 connected in series with the thyristor 22 can be of different sizes for different detectors

The size of the current flowing through the I_eit <mdwcrdcn of the additional thyristor 26 in the signal zone Z a differentiation of the detectors can be made

"5 be the same, so that there is a uniform fixed resistance." result.

The renewed activation of the deactivated detectors takes place in that the potential of the voltage conductor * 16 in the signal center 7.

ao increasing the self-halation of the additional thyristors 26 is switched off

The further relay element preferably actuates each one in the event of a slip. through it a dem jcwci? -; Optical display associated with efl detector

organ. This makes it possible to determine in a simple manner which controller is switched off, for example, on the basis of a message signal generated in the Stonjfjgsiall. In the exemplary embodiment is rH> opjischc indicator member an opening provided on the detector light source, namely a switched with the additional thyristor 26 in series bulb 34 is to be a visual indication in the Ssgnalzentrale, as in modification of the Ausführtangsbeispiels shown rs would also be possible, due to a Siromfiusses through the further thyristor 26 to operate a transmitter provided in the detector, the output signal of which has a frequency characteristic of the detector and which is transmitted via one of the conductors 12, 14, 16, 11 to the signal center Z, where

4d due to the frequency of the received signal a distinction is made between the detectors and the respectively addressed detector is displayed.

The parts of the signal center Z required to switch off the detectors are shown in F t g. 3 shown a

On-Off-SchaJte »- 36 is used to switch off the addressed Detectors closed. As a result, the potential is switched to the feeder 16, the then the further thyristors 26 is continuously fed. At the same time a pulse generator 38 is activated,

the briefly one transmitted via the pulse transmitter 18 Ignition pulse generated This switches off the addressed detectors. The operating status, in which previously activated detectors are switched off, an optical indicator

itigzAJtg & i indicated that the potential to be switched to the switching points A to the further thyristors 26 in the signal center Z is actuated during the supply of dss.

fed incandescent lamp 4 ·.

Spoke further detectors again during the operating state in which the detectors are switched off on. so these can also be switched off by activating the pulse generator 38 by means of an additional

borrowed push-button switch 42 is operated again.

The potential to be supplied to the circuit point A does not necessarily have to be passed to the further relay element via an additional Spciscleitcr

<y Z Γ

■ <; ri I f

the potential of the conductor 12 a W «taWu» »g JJ> '" ^ ££ ^ c ÜWampen 34, 35 voFgc-

Iu superimpose, which in the detector nuttb em «iCorKfc £ ^ Ρ ^ β ^ ^ _GlüWamp ^P _{en 34> 3} 5 through-

sators are separated and ^ £ ™ _η Α Ji "ufüh- 5 burns, the reaches over the remaining light bulb

to generate the dent SchaltungsP " ^nk ^ / ^u ^ '^. ₃₄ ^. 35 current still flowing from the thyristor

reridea potential serves, while the ^ ^CC » ^SC ' ^S P ^ _{22 and de} " _{weilcreil Tnyris} tor 26 to keep conductive

There is a higher potential from the remaining parts and at the point A

! Detector by suitable circuitry maiinanmca _{dasjcnjge des} , ^ _{ηεΓ5 12 to} maintain. - In the

JCferngctiallen will-yiin.iimn '<ü _r dk io other corresponds to the embodiment according to

JSt iSS ^g - 5 »Ä ^ f?" * "~ ^{Chen demiCn} " ⁿ

_Z to rendering conductive de. we, ₌ ^^^, ^ ^ f / bl ^ .dee.nights of the initially mentioned

zum Leitendm ^^ Ä Egib t.dee.nchtungen of the initially gcn

not necessarily a ^ ^d «£ 'J?, ^^ th Art. in those in the signal center in the case of the

be provided. So it is conceivable that one of the two _{cjne <>} ^, ^^ _{due to one Mft} .

I ^ I2J4 of the line 10./^^heddicd^ue^n £ _{ursache diL} . _{sc i} i htn

_cjne> ^, ^^ _{due to c}

I ^ te _f I2J ^^^^ £ _{cause diL} . _{scr Sl (} , _{rungsfali vün} a real

rcn switched suid. as ^ P '' ^ * ^ "* ™ the Alamfall is untersche.dbar and en Störun _S's reporting

ncm potential at the kunr / eil'f "^ S" ⁸ ^ " _sign al is generated. In this case, the beta

yreileien relay organc at least one impulse ^ ^ ^^ ^ ^ ^ ₃ ^ _{44 4g in}

is stored. .... · "" ^ "η, -γΙργ ImDuls- 30 Fig. 4 when the fault message is present

A separate pulse ^ 8 ^ can take place in a similar manner. The disturbed Detekt «u, n blci-

lciter in this way too. dat ^ the / u have been defalled and tons have been repaired.

f * t tS ^^ TS SSÄS while the other detectors are operational

^^^ fTwirrn ^ hend-T der * Ä ^ ÄÄSK ^ impulse superimpose »irf. J ^ '' ^ _{ffih 5ρί ο, for} white lines 10, 10 'are connected. The one 1 .nie signal center 7 are shown in the emem ^ au : g ^ ^ ^^ _Dclekloren ^ _{1 Dc} , ^ _{3 ρ} , _{Λ which is} shown in Fig. 4. ^ A ^ fuftrungs P ^ _{d between (; hen dje UUcr 12} _ _{M haItct are} Fig. 4 is the ^E ^^ ScM «er36 in ^ • _The ^. ^ ^^ ^ ^. ^ _{Detectors DeV} ", v a knick ^ switches 44 er ^ ujaer DeV ... DeY on, which _{lie parallel between conductors gang} 5 of a bislabil ^m J ^^ _f ^ ^ 48 to-12 '. 14'. Due to an increase in the, we.ie « en ggg ^^ J ^ _31ιί . Line ^{current 6} in the conductor 12 or 12 'of a line 10 resettable, the de η J «« ^^ * _{46 is in} or 10' is known for each line 10,10 'in per se - «« ^^ / «^ SiSSS ^ ScIiriter 35 ter way, a message signal, possibly a fault or corresponding Vre ^ like ^ gcsc, can be generated _{via alarm signal} spu.51 EC ^ ^ _{detectors erfo] However gt insam characterized as} ß conductor 12 higher potential l ^u _{'the feed pus} i i _{6, 16' of both Linicn} i _0, 10 miteingeschaltet '. At the same ^ ^ J ^ is _other guhlamp ^F _V are erbunden and that fed to the signal center, indicating a DALI "*""i _ter ^& _{dcr saddle} 44 _(Fig. 4) _{and dei} Pulse generator 38 for addressed I ^ Mpren erioig. _bejde ^^^ j _1Q , _{iasam is provided} . Every time you close the ^ rucUnoptocha._ ^ _p? ^ ^ ^, ^ ^^^ _{def Tüi} , _c

ters44 is the ™ P ^u Jf ^^^ _te f L during the center shown in FIG. Here is in

scm is em OszillatorsiMffl ^ _Im p _U Is _g ebers38 the additional feeder 16 of the line 10, which the

the pulse duration of the ^ Impukes ^ «JJJPJ 8 _{the 45 other thyristors 26 (Fi 2) that of these aU} f

a sequence of Z «™ ^ Γ ¹ H Prevents the switching points / 1 potential to be switched from being

Head 16 gd «« "« * «- ^u *" «Tscbaltiine 46 with the leads in the signal center Z a pushing device

the output of the ^] f ^ ° ^u ^ rf ~ switched on, which when current flows in the output

ZündimpuIseabeaufecWg wiro ^ _{alz £; ntraie} signal generated. The output signal of the measuring device

Trfe a m Verbmdong m.i α β device 58 is the inverting input 60 one

according to Fig. 4 y ^^^^^ L the AND gate 62 supplied, the other input

shown. The switch 36 acts directly on the & * & £ *** _d z _{Gn dimpulse.} The

send feeder ¹⁶ ^ ° J ™ L 54 _ausS a _e couples AND element 62 thus generated depending on the

are by means of a ^ ensator ^ ^ vr ^ _ _{actuation of the switch 36 and of the NichlV} or-

and a train 30 Zundscnaltung Q ^ _he elec- 55 handensein of the output signal of the measuring device

ires the ^Zündim P ^uI ^^ f _in V "Y _{6 to the} fact that 58 a fault signal, which indicates that despite the failure

trsds of the further Thyra «ors - ° _{u {serz efS 3S sac} hs daer switching off the addressed detec-

during the ^ fJS ₃ Tf ₅ , several ignition engines no shutdown has taken place, since their further

(Fig. 4) through which ⁽ ^ if ° ^r ^ -. _{H 5r of the Ziin} _ thyristors 26. This disturbance

pulse are generated, the ^ cnsi- .. ^^ bulb 64 is displayed. Extension of the further thyristor 26 hone.

1 sheet of drawings

Claims (18)

Patent claims: 1. Meldeeinrichtuug, preferably for fire alarms, with at least one line connected to a signal center parallel to each other · between two conductors of the line connected detectors, each having a relay element that is made conductive in the event of a response and goes into self-holding, due to the the increasing of the line current in the signal center caused the relay process to become conductive, characterized in that the relayor _b at (22) is connected in series with a diode (24) that is connected to one between the relay element (22) and the diode (24) lying circuit point (A ) a further relay element (26) is closed that all further relay elements (2o) can be briefly oetätigbar together from the signal center (Z), that the other relay elements (26) when actuated switch a diode (24) in the reverse biasing potential to the node (A) and that in the case of a St Romflusses through another relay element (26) this goes over into self-holding. 2. Reporting device according to claim 1, wherein i'as relay element has a low resistance in the conductive state, characterized in that to denjer ^: that branch of the series connection of Relaisorjan '22) and diode (24), which _t "between the Schaltun t", spunkt (A) and a conductor (14) of the line and in which the relay element (22) is located, a resistor (30) is switched on in series with the relay element (22). 3. Signaling device according to claim 2, characterized in that the resistors (30) of different detectors connected in series with the relay members (22) are of different sizes and are of different sizes due to the size of the current flowing through the additional relay member (26) becoming conductive Signal center (Z) a distinction between the detectors (De I, De 2, De 3 ... De N) takes place. 4. Reporting device according to one of the preceding claims, characterized in that in that branch of the series circuit of relay (22) and diode (24) which lies between the circuit point (A) and a conductor (22) of the line (10) and in which the diode (24) is located, a resistor (32) is switched on in series with the diode (24). 5. Reporting device according to one of the preceding claims, characterized in that that the further relay element (26) is fed from an additional conductor (16) of the line (10), whose potential is higher than that of the conductors (12,14) between which the detectors (OeI, De 2, De 3 ... DeN) shell. Jt are. 6. reporting device according to claim 5, characterized characterized in that the potential of the additional conductor (16) in the signal center (Z) is below Cancellation of the self-holding of the other relay organc (26) can be switched off. 7. Mcldeeinrichtung according to one of the preceding claims, characterized in that that the further relay element is a thyristor (26). 8. Meldeeinrichtuug according to one of the preceding claims, characterized in that that the further relay element (26) in each case in the case of a current flow through it to the respective Optical display element associated with the detector (34) actuated. 9. Reporting device according to claim 8, characterized in that the optical display element is a light source (34) provided on the detector. 10. Reporting device according to claim 9, characterized in that the light source is a incandescent lamp (34) connected in series with the additional relay element (26). 11. Reporting facility according to one of the preceding Claims, characterized in that the brief actuation of the further Pclaisorgane (26) by means of at least one pulse. takes place, which is sent from the Sigr.aizentrale (Z) via cmc ;, Tmpuls (18; 16) of the line (10) (Figures 3, 4). 12. Reporting device according to claim 5 and 1 !. characterized in that the additional conductor (16) of the line (10) serves as impulse conductor, by its potential for short-term Betau account the further relay members (26) at least a ^T mpuls superimposed vvird (F i g. 4). 13. Reporting device according to claim 11, characterized in that one of the two lines r (12, 14) of the line (10), between which the DetekU ren (Del, De2, De3 ... De.V) are connected. . serves as a pulse conductor in that at least one pulse is superimposed on its potential when the other relay organs (26) are briefly actuated. 14. Reporting device according to one of the preceding claims, characterized in that by actuating a switch (36; 44) in the Signülzentule (Z) the other Relaisorga NEN (26) the potential to be switched from these to the circuit points (A) can be supplied and by means of a pulse generator (38) controlled by the switch (36; 44), a pulse that actuates the further relay orgins (26) can be generated for a short time (FIGS. 3, 4). 15. Reporting device according to claim 14, characterized in that the switch is an on-off switch (36) which, in the switched-on state, of the other relay elements (26) to the Schaltungspun ' . (i) transmits potential to be switched, and J 'arbitrary actuation de at any time. iiapulsgebers (38) an additional! Push-button switch (42) is provided (Fig. 3). 16. Signaling device according to claim 14 or Ix, characterized in that an optical display element (40) is actuated during the supply of the potential to be switched to the switching points (A) to the further relay elements (26) in the signal center (Z) (FIG. 3) , 4). 17. Reporting device according to claim 14, wherein in the signal center in the event of a detector claim due to a malfunction a malfunction reporting signal can be generated, characterized in that the switch (36; 44) at The presence of the fault message signal can be activated automatically. 18. Reporting device according to claim 14, wherein several lines connected to the signal center sen and are separate for each line due to the increase in the line current of individual lines a reporting signal can be generated, marked by this, that the switch (44) and the pulse generator (38) for all lines (10. 10 ') together is provided π (Fig. 4, 6). I ς. Measuring device according to claim 2.5 and <4. characterized in that in the additional conductor (16) of the line (10). which leads the "ciu.-ren relay organs (26) the \ on these to the switching points (A ) to be switched potential 711", in the Sigiu central * /.) a measuring device (58) switched on. those at StromdunJiimL '. a rising signal er / .. U ^ ₁ . and that depending on the Bet ^: -i; 'i .-. g J ^ switch (36) and on the NidiLvrrHi. Casein of the output signal of the MeEvon! '* ung (58) a fault signal can be generated