SU1290388A1 - Device for polling measuring objects - Google Patents

Abstract

The invention relates to the field of information transfer in automated process control systems of industrial enterprises. The aim of the invention is to increase the range, increase reliability and expand the scope by organizing both cyclic and sporadic polling of objects. The device contains a clock pulse generator, two current sources, two triggers, a diode array, a key, a current source circuit key, a reset button, a start key, a start pulse driver, an initial relay selection key, an operation mode key, four delayed elements , five optocouplers, five switching contacts, at each controlled point - a relay by the number of controlled objects; control point and controlled point are interconnected by means of a common bus, two buses of clock pulses and four polling buses. 2 Il. (& (L N3 ss about OS OS OS

Description

The invention relates to the transfer of information in automated process control systems of industrial enterprises. It can be used for the process control system of tea platacs.

The purpose of the invention is to increase the range of action with the same communication line, increase reliability of operation, and expand the scope of application by organizing both cyclic and ciiojja-dical survey of objects.

FIG. 1 shows a circuit diagram of the device; in fig. 2 - scheme of the controlled point.

The device consists of a control point (CP) 1, controlled points (CP) 2-4, which are interconnected by a communication line consisting of IHHHIJ 5, polling buses 6--9, the number of which input. t and spikes start-up And and 16, 1nn communication extreme relays adjacent KP 10-17. The control point (Fig. 1) includes a generator 18 of the so-called pulses, a switch 19, two triggers of the counting circuits 20 and 21, a diode array 22. delaying elements 23-26 with a delay, transistor optocouplers 27 30, or a third galvanic At the same time, two sources 31 and 32 of the current, supplying the switchgear relays, a key 33 in the source circuit; a current loop connected to their OTpHuaTc: n ii: jimi terminals, voltage source 34 feeding the rest of the chain, nerec. reader p; onros management with contacts :-) 5 ЗН, button 39 of nuska with formate; I eat 40, the transistor ontonara 41 starts, 42 selects the switch, the key 43) .and:,.; 1 work, the reset button 44.

The control point (Fig. 2) of the component (; it. Electromagnetic relays on repKoiiax with on hanks 45--51, each of the Koropi ix is connected to the first pins with cooTiieTci iiyioiiUMi P1INA oirpoca 6 --- 9, and the second to BiiHio / uiMn through the corresponding closure K (.iii clocks of the lethargic relays 32 58 .. ci-kj copraints 59 - 65, pic; 1 week, their pe. Ie () 72 with a common spike.

The device works to the next ;; UK) | Zim (zom.

P) and nuske device t key, 3. connecting through it KtionKy 44 bus 5 to the terminals with negative polarity of the current sources 31 and 32. At the same time, the key | 9, the tapping pulses from the generator 18 i; a non-triggering trigger of the counting circuit 20, and) e: ult chchechch) non-counting circuits 20 and 21 ;; ri. (), -, th motion.

At the outputs of the diode array 22, Io.L - signals that are not connected, m- the corresponding elements 23 26, and msnyy: 5a slowdown to close to the trap switch | 5n hp of optocoupler, equipped with galvanic sources from 31 sources and 32 currents and cxfv ..

KOTCiptiie are fed from the source for example: 1 and 34.

At the first input of the optoiary, a signal is sent - 1 a.L with corresponding soot} P ov 23-26,; ;; and the second with the corresponding source 1: ika D) and 32 currents. On: chetchet1 b e opto-iia) i) i TciK is supplied from the first source.) Current, and pa even from the second source 32. Once-10 time: 1 O can only be open. Between mets, on the cat)}) 1 s ok comes from various sources. Therefore, the current from the same current source to two optocouplers can not be a PG1 node. (. иь; хо;., and optocouplers 27-- 30 formed by cHiTia: control (011 impus) | through cop: ak 1 s of the motion switches 35 38 movement | 1calls on iiiHHi, 6 9 movements. and 35 38 can 1 be walked in two on the south; n. and reverse of its move. I): -; avis: ios and the position of the first 1 key; K ij impulses of the dynamic; 1ОС1 consider the buses nzhzheni in N. rdke: first; 1a iia ;; | inu t), and then alternately on H1iny 7, 8, 9 (for example onos oop oct) and; wn around |: atomic order : first on SHHUV 9. a for-; c% 1 but in turn |; about pa; ins 8, 7 and b (nr: at ;; () m (L1rose obt ekg gov). But a survey of objects can start from only after the installation.; io: iKi-i is the corresponding position of the x-ray 12 and 39 start-up. For direct polling, the key is 42 pahod.and 1 s in the original but- "Ki KeiiHt: and the closure of the cggkts of the button-K1 39 in the circuit 4 40, on the output of which, if there is a signal on the hch nerve signal, go ..ch (} d. Matrips 22 by V: 1 are used, 1 rokhod (1, i through razris-gprnuk) ontopar 41, through to, 1uch 42 but nii-nie and ca 1P ory end of the winding: the first relay 45 of the first gearbox 2. The relay is connected, since it is notorized on the network; it becomes impulse and becomes self-locking . Pg ;; your contacts 6 (j z value have eaten; .i, () (jiTOporoj) barely -iti and co1G1ak 1 s 215 HCHiii predecessor1X) (L) track | 1e (l

 51 on; Os .: 1 KGD 4. Occurs 10C nepisoro object. Upii nota.tachs of the impersonation dvzhs1; and .la ggrugogo n; i: 1u 7 movements),; batt the 4fi relay and) Vits on the samole through ci-ion contacts () 0. one () B) e- (contact: 54 yen and: (n, -lead | | mtsyo pe. ie 47. The potential of man-ins H disappears, since the time has come to be); b: 1 the closure of elomepga 23, and nerve -15 1; the initial argument is revisited; 141 Occurrence iiTOjioiT; the object. Zacivi 11 (; dlets. 1c dvizhenie1; and on the third i pnu 8 Sd abat;) t) chain of relays 47 on ::; Miiu) M i 2 and gets its contacts 61 on it (.) interlocking 61 and closes contacts 68 in the unwinding of the fourth (101H) re: e 48, preparing it for the slave in 1. There is no supply of motion imi on ip (well, 7, return relay 4fj: cc hc li 1; similar state. Op-U occurs; third obt. A.

Motion impulse is applied to the four-way}) traffic line 9. The fourth relay 48 operates, becomes self-locking via its contacts 62, closes its contacts 69 at the next fifth relay, preparing it to operate. Subsequently, the driving pulse is applied to H1 to 8, and the relay 47 returns to its original position. A survey of the fourth object begins.

In a similar way, a direct survey of the remaining objects of the device occurs.

The device can operate both continuously and during only one cycle. The mode of operation is determined by. When the key is turned on (contacts are closed), ie, a continuous interrogation of all objects occurs, and when it is in the initial position (contacts 43 are open), only for one time.

Reverse polling can be done both starting with the relay 45 of the nerve KG 2 and with the relay 51 of the recent gearbox 4.

With closed contact.x key 43), when the nerve object is called by the indicated methods, the initial survey of obstructions can be performed starting with iiepBOi O of the KP 2 object both in direct and in reverse order. Voye depends on the order in which the polling pulses of the polling of pins 6-9 will be delivered: at .i pHNUjv; ;} i: - to dew on 1PIPY 6, 7, 8, 9, 6, etc., n) .; oGi;: aT-polling - for tins 6, 9, 8. 7, (i and l. t. When you go back to polling with nep.ioro ob-j. - the latter causes the indicated 1-b; gp1) s) b ; m Then, after polling the first object:: :) and sending a polling pulse to type i), ci), the relay 51 is switched on gearbox 4, since the 52 re cycle ;; e 45 in the L-G circuit would; for: even when this relay is activated. it becomes self-blocking and its contacts 58 in the circuit of 50. You are 72 in the circuit of relay 45 at gearbox 2. Feed 1; min-op. (), the pin on snow 6 stops, and pe; i.e. 45 returns to its original state The last object of the device is polled.

When fed to the N1iPu 8 im polling, a relay 50 on K 4 is triggered, becomes self-locking through its contact1 1 and closes its contact p, no-: | 1ele 49, preparing it for operation. The interrogation pulse is interrupted on H1inu 9, as the delay period expires on element 1. 23. Relay 51 returns to its initial state. There is a survey of non-potential item.

Similarly, in the reverse charge, the survey of the remaining objects of the device occurs.

When interrogating objects in the opposite direction from the top of the first object, at start-up, the start button 39 is also pressed when the key 42 is set to the second position and the switches are turned .35-38 onros the second position, resulting in When a polling pulse arrives at P1inu 9, the driver generates and issues it. 1s of start-up through transistor opto-coupler 41 and key 42 to 16, from which the op is fed to relay 51 of KP 4. This relay is activated, through its contacts becomes self-locking and closes the signs in re circuit, those 50, preparing it to operate . Surveys nosledne- | about the object.

Then the reverse (reverse) poll is conducted in the same way.

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Claims (1)

Invention Formula A device for polling measurement objects, which contains a clock pulse generator at the control point of a control unit, a key of a current source circuit connected to the ebros button, BTOpoii, the output of which is connected to a common 11P1NOY, the first and second triggers, the outputs of which are connected to the diode array inputs, an inverse output the nerve trigger is connected to the input of the second trigger, the first output of the diode array is connected via a reset key to the start-up driver, four switching contacts, the first first contact and the second i terminal of the fourth end tact KOTOpoi o obedinen1, 1 and gudk. The first point of the second contact and the second terminal; 1 of the third contact is connected through 1P51 and connected to the second first polling pin, 11rd1; the first output of the third and second output of the hot contact is connected and connected to the third poll of the poll, the first output The fourth and second pins of the first pins are connected and connected to the fourth iHHHe of the onros, for each control unit that is readable — a relay according to the number of quality of the control: the objects being operated, the control point and the control point are interconnected; two nin nuska and even The grayness of the ground is characterized by the fact that, due to the reliability of the operation, increasing the range of the device and expanding the field of application by organizing both cyclic 1CH1 and sporadic interrogation of objects, four inverting elements are introduced at the control point delay, four optocouplers, a key, two current sources, an optonar key, a key for selecting the first relay, a mode key) Works, the first inputs of four inverting elements are connected to the nerve inputs of four ontonars, the outputs of which are connected to the third output terminal the switching contacts, the second inputs of the first and third, second and fourth optocouplers are connected to the positive nerve 0 and the second current sources, respectively, the negative, the 1st terminals of which are combined and connected to the second output of the key, the current sources circuit, the first input of the fifth opto-pair connected to the output of the ormirometer pulse start, the second input - with the second output of the reset button, the output through the first output of the selection key of the first relay is connected to the first output of the operating mode key and with the first launch, the second start bus is connected to vt Orym output key operation mode. Phage / k S -t-ff-f-f1 -f-fü-f- mUPbAVtAPt ::::: -.- ..