SU1348881A1 - Alarm signalling multichannel device - Google Patents

Abstract

The invention relates to alarm systems and can be used for multi-channel reception of radiotelephone alarms. The aim of the invention is to improve the speed of the device. The time selector 3 with the help of counters 11, 12 checks the duration of the pulses and pauses between them for compliance with the specified values. The decision to receive an alarm is made when the counter 15 registers a specified number of further pulses. The selector 1 connects the next channel when the counter 4 registers a specified number of failures in the received sequence. 1 hp f-ly., 1 ill., 1 tab. Q from 00 00 00

Description

The invention relates to a system for alarming and can be used for multi-channel reception of radiotelephone alarms.

The purpose of the invention is to increase the speed of the device.

The drawing shows a functional diagram of the device.

The device contains a selector 1 of channels j frequency selector 2, a temporary selector 3, a counter 4, a display unit 5, a poll register 6, an AND 7 element, a pulse o 8 pulses, a delay element 9, a generator 10, counters 11 and 12, a decoder 13, element AND 14, counter 15, trigger 16, element 17 EXCLUSIVE OR.

A radio telephone alarm signal transmitted over a communication channel is a periodic sequence of radio pulses of duration T with pauses between pulses of duration G.

The device works as follows.

At each time the selector

1 channel connects to the input of the frequency selector 2 one of the radio telephone channels. Frequency selector

2 performs filtering and detection of incoming radio signals at its input. In the temporary selector

3, analysis of the sequence of video pulses is made for compliance with the parameters T and, T of the alarm. In case of a mismatch between the pulse duration or the pause between the pulses and the reference value, the next pulse is recorded in the counter 4.

In the case of receiving additional order of a specified number of pulses of duration T, following with pauses of duration (J, at the first output of the time selection

0

five

0 5

ABOUT

g

five

0

of the torus 3, a signal appears including the display unit 5. The connection of the next channel with the channel 1 selector at the command of the output of the polling register 6 occurs if a pulse is output at the output of the overflow of the counter 4, when it registers a predetermined number of failures in the pulse sequence received by the device, t; e, if there is no alarm signal in the monitored channel at the current time.

The control of the parameters T and T of the input sequence of video pulses in the time selector 3 takes place in the following way. The pulse shaper 8 selects the edges of the pulses fed to the input of the time selector 3 (test pulse). A reset pulse is generated from a test pulse using delay element 9. The pulses from the output of the generator 10 arrive at the counting inputs of counters 11 and 12. The other inputs of counters 11 and 12 receive pulses from the output of delay element 9 and zero them. Counters 11 and 12 provide measurement of the duration of the pulses and pauses between them, respectively, by counting the counting pulses from the output of the generator 10.

The signal at the output of counter 11, if there is an alarm in the monitored channel, appears after time T and enables operation of counter 12, at the output of which the signal can appear (in the absence of reset pulses) after time T + from the moment of arrival of the last discharge pulse. In this case, the signals from the output of the counters 11 and 12 are fed to the corresponding inputs of the decoder 13, which has the following truth table

Decoder 13 g, mon :: echi; and

CHU.SNHIALOP G1 OMNENTY G, .cheN i; or boL11gne G -T, t. e. ;; ; mm- ;. neither when cn n: n -. but in.ixo.ae t 11 is not noHUHJic-H or by counting I and 1 I lorq by this permitting 1 g (); , j; M:

Owls with BL.XO / ia tj; iipb l pi od. -f, i; i

COD through j e4L i - 1. ca counter 15 and count; P h; ;; xo chica 4. K | u; M - p- .. L - pg, forms on;: bj -, - when not iipi4r; ,,: .r, pulses I p ,, V reiipri -.iii) ;;. controlling a friend to; H.:

In the POS-LSLI - M SLU G, 1: m,

Responsible 1; ky k :), .v. steps with B-ixii i; i; ri-Hf; Element 17 llul Hj4A.:01Hi F SLI

KOTOR input. M) with

minor bit for sche; 1I;

RUNITSEGO I OJ liT eCTiiO n .Ul-Hp i.;

pulses .. DRINK. M .. iH. rii: - r through inter t. Demolition ni. sequence 1; nm ;; y - .. and. on with injury ifi; -,;; y, io: ti. i HI, 11 ;; .o1: 1 L) iix :: i: i g-. .

information from C .. |. : G rYADs. Cx: tm ;; i 13., STBIA Pr lieilii .., -, D) i; r.; i: - J,

signals and.h ::; r.; i .., -., j -, - PARTNER OR gomg; t-element 17 IG...h .: || 1; L and with sigia.n. To n-ppiiiM cyiM; i -r (.;

about OTSUTSTP..CH1 .N ll.l .vi -. .

and through; descriptor i .J i - - - 1 i Bi.iGwuaeT smrsk c lfi m) account O4epc; uioro {r.su-: If the signal T |) ei.ogi; , the input ycTpoiiCT.ta Menpf; ibi i ii the scientific research institute of a given frequency h, 1 .. chica 15 pulse c (ipo (i -l- while its iiH |:. nji -, is the input of the program r counting; r vt: - the stroke of the counter 1 .. ..i of the impulses of the rg .. .. M of the counter 15, occurs block 5 indi ,, iii.

Formula

and 3 o

R e

one . Multichannels with -. ; alarm signaling, with frequency selector,.; s, ,, i.

 -. ui-: e;: iior About this. teK -: st n;. ;; h. connected Cfa in. -.ikatsii

I., g; t- with TTM, H Oh,

t (- |, Ñ С T Р od it s t t i

, n HiM o and Be, 1C. selector

1-:: -., (IT and register

-. .o; ... iL (fjici.Topa ka-: -: -: ohm y; 1 poiiCTBa,

one ; :, and; i. connected to

. . se 1 I Mountain; second M-, L1. C1.1 united. , WITH . IR; - I TiepBbiM

1, in - iXr K lTOyjOro

  ; L1; -,): I Gra survey - H ,; ,; . OUTPUT

. l-ii. .. .one. INLET

  r with i i J l a) iros a n. , o.M block indi- 1 cc G; with to the mountain of channels. H I b.o; then 1.1, about tl and; h, that time -1 i4: HjpaioD, three scores L-H1. PULSE

m g) ,. 1 delay element, op oedi- ..i, i: K; .. ,, ..-; 1pm trigger i .-. (Hi-.L i o selek-). - I-jbi. hmnuls); ,

 :, ymh, ki.; entrances. . m g counts-

:) -p connected to

.-, 1) p irri I second

.:. p-i; meter

. : with Schrock trig- -i I,; l, cuI figure J opa,; ip,, o counter and

. . : c iciTa second account- i. grog- () I is united with sec- r,;., 5, the output of which is. MTtJpoMy inlet

1W:. : -i M-ip, pl

i; ;; ; - nnogo selector with h zeroing third:; . P1.1) 1,1th output of which

 i-m.;: C) M of the belt, T-,: ;;) 1I В1.hkhod connected

-::: ;; hm, the element of the LIFEUP I ;, ,, Ko i porci is connected to the third; . ;. . 1: if.chto.1a, the output of the tri-i, i: ijbi (.; Pore input element, Ji i :: l.l, riJlH.

Editor I. Segl Nick

Compiled by A. Zinkov Tehred A. Kravchuk

Order 5193/51 Circulation 543 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, ul, Proektna, 4

Proofreader V. But ha

Claims (1)

·. oh l, 's one is ¹ . o "shared selector where,. the course of zeroing the third n "L, whose first exit ! 'S one? temporary d d κίοΟίΐΗ output connected and - bottom of the element EXCLUSIVE 1.T.1..D, the blacksmith is connected to the thread / d / encrypted., The output is trig. 1348881