RU1824645C - Device for indication - Google Patents

Abstract

The invention relates to the field of automation and can be used to monitor sensors made in the form of contacts grouped by a matrix circuit. The aim of the invention is to expand the functionality of the device by providing monitoring and diagnostics of the device blocks. The goal is achieved in that the device containing the trigger, element And, t-bit binary counter, pulse generator, sensor unit, indicators and power supply n groups of differentiating elements with m elements in each, n elements OR, n blocks of analysis of the state of the sensors, each of which is made of an m-bit binary pulse counter, encoder, decoder and of the OR element, and the block sensors are made in the form of switching contacts forming a matrix of p columns and m rows, with corresponding connections between the indicated functional elements of the device. 3 ill., 1 tab. CO C

Description

The invention relates to the field of automation and can be used for automatic monitoring of sensors made in the form of contacts of electrical circuits grouped according to a matrix circuit.

The aim of the invention is to expand the functionality of the device by providing monitoring and diagnostics of the device blocks.

Figure 1 shows the functional diagram of the proposed device; Fig. 2 is a schematic diagram of a controlled differentiating element; Fig. 3 is a timing chart for explaining frequency generation with a fractional division coefficient.

The proposed device (see Fig. 1) contains a block 1 of monitored sensors made in the form of switching contacts grouped into a matrix, a pulse generator 2, an element And 3, triggers 4.1-4.4, forming the first binary counter, trigger 5 with two installation inputs, blocks 6.1-6.4 indication, n groups of controlled differentiating elements 7.1-7.4, elements OR 8.1-8.4, elements OR 9, binary counters 10, encoders 11, decoders 12, outputs 13.1-13.4, control input 14, p blocks 15.1- 15.4 sensor state analysis.

In block 1, each contact group consists of make and break contacts. NC contacts of all contact groups are combined and connected

00

Yu

N about

 ate

with a negative busbar e of the power supply source, make contacts with a positive bus d of the power supply source, the middle terminals of the 6i, BI, p contact groups are connected to the control inputs of the differentiating elements 7.1-7.4 of the corresponding group.

The output of the 2 pulse generator is connected to HSII with the first input of the ZI element, the second input of which is connected to the single output of trigger 5; the output is connected to the counting input of the first binary counter on triggers 4.1-4.4. The single output of flip-flop 4.4 is connected to the zero setting "move of flip-flop 5. j whose single input is the control input 14 of the device. The pulse inputs of the controlled differentiating elements 7.1-7.4 of all groups are connected to the zero outputs of the corresponding triggers 4.1-4.4 of the first binary counter, the control inputs are connected to the ai, bk BI and n pin outputs of the 1 opp and the outputs are connected to the inputs of the elements OR 8.1-8 4 The outputs of the elements OR 8.1-8.4 are connected to the counting inputs of the counters 10 I of the corresponding blocks 15.1 of the analysis of the corresponding sensors in which the outputs of the counters are 10 I ju. To the inputs of the encoder 11. , R. (decipher moves Ator 1 are connected to the input .-. m e pmemta OR 9.1. the output of which LO OUTPUT 13.1 uSfOYS.TV8.

The controlled differentiating element 7.1 (ohm. Figure 2) contains a resistor 16, a capacitor 17 and a diode 18. The pulse input 19 is connected to the inverse (zero) output of one of the triggers 4.1-4.4, the control input 20 to the middle output of one of the contact groups, and output 21 to one of the inputs of the element 8.1-8.4 OR. The combination of the binary counter on triggers 4.1-4.4 and the differentiating elements 7.1-7.4 of one group realizes the function of de; changing the frequency of the generator 2 by a fractional division coefficient (see the time diagram in Fig. 3).

We determine the number of groups of differentiating elements 7.1-7.4, their number in the group, and the number of blocks 15 based on the number of n columns and m rows of the matrix of controlled contact groups.

Since the average terminals a of the contact groups are connected to the control inputs of the corresponding elements of the 7.I group, the number of elements 7.I in the group is equal to the number of rows m, and the number of groups of elements 7.1-7.4 should correspond to the number of columns in p.

The design of blocks 15.1 for analyzing the state of the sensors should correspond to the number of groups of elements 7.1-7.4, the number of columns of the n matrix. Thank you

Such construction of information on the state of rp rows of a selected column can be transmitted over a single wire - in the form of a packet of pulses with a certain number of pulses from the output of the corresponding

element 8.1-8.4 OR.

The number of bits 4.1 of the binary counter determines the number of pulses generated at the output of the ZI element and must correspond to the number of controlled differentiating elements 7.1-7.4 in the group, i.e. should be equal to t. 8 blocks 15.1 the number of bits of the counter 10.i should also be equal to t.

To simplify the description of the operation of the device, cases are considered when the number of columns and rows in block 1 of the controlled contact groups is four (m --- n 4V

Consider the operation of individual fujtsi5 disgraced blocks of the device.

Generator 2, element And 3. The binary counter on the triggers 4.1-44 and trigger 5 are designed to form bursts of pulses coming from the output of the element

0 and II on the trigger path of trigger 4.1 of the binary counter. which is carried out as follows

Trigger 5 and triggers 4.1-4.4 are set to the zero state (circuits of the initial installation are not shown), then the signal coming from input 14 from the single input of trigger 5, the latter is set to the single state. Pulses from the output of the generator 2 sprinkled through from

Opened element 1/1 3 to the counting input of trigger 4 1 of the binary counter. After 24 pulses are received, the counter overflow signal from the output of trigger 4.4 sets trigger 5 to the zero state,

5 However, the flow of impu / aces through the And 3 element is stopped.

Thus, at the output of element And 3 a packet of pulses with the number 2t 2 will be formed (the exponent is equal to the number

0 builds contact groups). From the zero outputs of Qi-Q / j triggers, the pulses arising from them are fed to the pulse inputs of the differentiating elements 7.1–7.4. At the control inputs of the latter arrive

5 enable or disable signals from the middle pins of the contact groups. The timing diagram corresponds to the case when conclusions ai. az and e are connected to the positive voltage bus, and terminal 82 to the negative bus. In this case

differentiating elements 7.1, 7.3 and 7.4 will be opened, and element 7.2 will be closed. Through element 7.1, 8 pulses will arrive, through element 7.3 - 2 pulses, through element 7.4 there will be 1 pulse, as a result of which 11 pulses are generated at the output of element 8.1 OR (out of 16 pulses received at the counting input of trigger 4.1).

Thus, the division ratio 1R

Cd in this case is -. In general

PLP

(ai 1 or 0 depending on

i i1

2 a, 21

I about

signal level at the control input of the corresponding controlled differentiating element).

The number of pulses passed to the output of the OR element 8.1 and recorded by the counter 10.1 unambiguously determines which outputs of the elements 7.1-7.4 received pulses from and, therefore, which of their control inputs ai-a4 received enable signals. In the case under consideration, when fixing 1 pulses in the counter 10.1, we can clearly conclude that the contact groups of the first, third and fourth rows of the first column have worked, and the contact group of the second row is in the initial state.

Decoders 12.1 are designed to decrypt certain states of the counters 10.1 and generate the corresponding signals at the outputs 13.1 of the device. With the help of decoders 12.1, a certain number fixed in the counters 10.1 can be tuned, i.e. to a specific combination of triggered contact groups in a specific column.

For example, when using the outputs of the decoder corresponding to the numbers 0111, 1011, 1101, 1110, the output signal will appear in the counter only when three contact groups in the column are triggered. The inputs of the decoders 12.1 are combined logically by means of the corresponding OR elements 9.1, the output signals of which can be used to connect means of alarm (sound or light).

The encoder 11.1 is designed to convert the binary code fixed by the counter 10.1 into a positional code, which then goes to the inputs of the indicating unit 6.1, where the line numbers of the triggered contacts in each of the columns of the contact groups are displayed.

The algorithm for the operation of the encoders is explained in the table in which the line numbers of the contactees that worked in the selected column are aligned with the stake,

5 fixed in the counter.

In the control and diagnostic mode, the device operates as follows.

Trigger 5, binary counter on triggers 4.1-4.4 and counters 10.1 are set

0 to zero (installation circuits not shown).

Initially, the NC contacts of all contact groups are set to voltage, in which they are connected to the test bus e of the supply voltage, as a result of which inhibit signals are supplied to the control inputs at, 6i, BI, n of the differentiating elements 7.1 of all groups. The signals from the input 14 of the device trigger 5 is set to a single state, as a result of which the pulses from the output of the generator 2 come through the element And 3 from the binary counter, built on triggers 4.1-4.4. From exit

5 elements And 3 to the counting input of the trigger 4.1 receives 16 pulses, from the zero outputs of the triggers 4.1, 4.2, 4.3 and 4.4 to the pulse inputs of the elements 7.1, 7.2.73 and 7.4 respectively receive 8, 4.2 and 1 pulses, However

0 none of them passes through the element 8.1 OR and then to the counting input of the counter 10.1, since the elements 7.1-7.4 are closed. As a result of this, the zero state of counter 10.1 will not change and no signals will be generated at the outputs of decoder 12.1 and encoder 11.1, which indicates the correct operation of all nodes of the device.

If as a result of the described actions it turns out that a counter 10.1 is fixed but a number other than zero, a faulty circuit is detected, If, for example, the counter has a count of eight pulses, then this means that one of the elements of the electrical the circuit along which 8 pulses are transmitted from the output of trigger 4.1 (most likely, the inhibit signal does not arrive at the control input ai of element 7.1).

0 Therefore, in this case, according to the state of counter 10.1, it is possible to monitor and diagnose the nodes of the device. Then, the contact contacts of all contact groups are set to

5 of which they are connected to the positive bus of the power supply voltage, as a result of which enable signals are received at the control inputs ai, 6i, BI, n of the controlled differentiating elements, i.e. the coefficient of case 1 C is established

nor cd j§. Out of 16 received

ID

generator 2 pulses through the open elements 7.1-7.4 to the output of the element 8.1 OR must read 15 pulses, which should be recorded by the counter 10.1. With the correct operation of the functional nodes of the device, the 6.I indication nodes should indicate the numbers of all contact groups from the first to the fourth in the corresponding columns of the matrix. The outputs 13.1 of the device should produce control signals indicating that the set threshold value () of the contact groups that have worked is exceeded (the outputs of the decoder corresponding to the binary code 1111 at its input are used).

In security mode, the device operates as follows,

Suppose that the first and second contacts worked in the first column, the second and third contacts in the second column, the first and third contacts in the third column, and the first, second, and fourth contacts in the fourth column. This will lead to the fact that in the first column from the contacts ai and beyond the control inputs of the elements 7.1 and 7.2 receive enable signals, and to the control inputs of the elements 7.3 and 7.4 - inhibit signals. In the second column, enable signals are sent to the control; ba and bz inputs, and inhibit signals to control inputs 6i and 64 of elements 7.1 and 7.4.

In the third column, enable signals are sent to control inputs BI and B, and inhibit signals are sent to control inputs B2 and B4 of block 14.3. In the fourth column, the enable signals go to the control inputs n, G2, and G4, and the inhibit signal goes to the control input gz of block 14.4. In accordance with the logic of the frequency divider with a fractional coefficient (see above), the following division coefficients Kd are set:, sixteen . „, 16.„, 16. v 16 d -T2 6 To Tz

As a result, from the outputs of elements 8.1, 8.2, 8.3, and 8.4 OR to the counting inputs of counters 10.1, blocks 15.1, 15.2, 15.3, and 15.4, 12, 6, 10, and 13 pulses will be skipped, which will be recorded by the counters. The encoders 12.1-12.4 generate positional codes corresponding to the codes recorded in the counters 10.1-10.4, and the display nodes 6.1-6.4 - display the line numbers of the operating closing contacts in each

column of controlled contact groups,

In the proposed device using

adjusting the decoders 12.1 to a specific code recorded in the counters 10.1, it is possible to generate signals at the outputs 13.1 corresponding to a certain combination of triggered contact groups in this column. (For example, if it is necessary to generate a signal when the first and second contact groups are activated, the decoder output corresponding to the code 1100 of the counter 10.1 is used.

5 Another advantage of the proposed device is the ability to quickly tune to a new matrix structure. When changing m - the number of rows of the matrix, the adjustment is due to

0 changes in the number of triggers 4.1 of the binary counter, the number of controlled differentiating elements 7.1 in the group, and the number of bits of the counters 10.1 in blocks 15.1. By changing the n - number of columns by 5, the adjustment is carried out by changing the number of blocks 15.1 and the number of groups of differentiating elements 7.1-7.4. Moreover, in each case, based on the requirements for the volume of equipment and the number of electrical connections between the control object and the central control panel, it is possible to choose the best option for constructing the device. In addition, as described, the device provides

Claims (1)

5 monitoring and diagnosing blocks without additional hardware costs. SUMMARY OF THE INVENTION An alarm device comprising a trigger, the output of which is connected to 0, the first input of the And element, the first input of the trigger is the control input of the device, a pulse generator, a t-bit binary pulse counter, display units, a sensor unit and a power supply 5, as follows. that, in order to expand the functionality of the device by providing control and diagnostics of device blocks, n groups of differentiating 0 elements of m in each, n elements of OR, n blocks of analysis of the state of the sensors, each of which is made of a t-bit binary pulse counter, encoder, decoder and element OR, and sensors 5 blocks are made in the form of switching contacts forming a matrix of n columns and m rows, the outputs of the first and second fixed contacts of switching contacts are connected respectively to the first and second busbars of the power source. We will connect the pulse inputs of the differentiating elements of each group to the left outputs of the same name. Binary Binary Impulses the differentiating outputs of the menu in each group are connected to the inputs of the corresponding OR element, the outputs of which are connected to the taps of binary digit pulse counters of the same state analysis units of the sensors in each of which the t-digit pulse counter is connected to the corresponding inputs of the encoder and decoder, the outputs which are connected to the corresponding inputs of the OR element, the output of the OR elements of auri / ii blocks from the same date as the “YaVLRUTSr icons” is correct, the output of the pulse generator is connected to the input of the element I. pikhol, which is connected to the input m of the bit binary pulse counter, the output of which is connected to the zero input of the trigger, the outputs encoders of blocks for analyzing the state of sensors are connected to the corresponding inputs of the same-name display units, the outputs of the moving contacts of each of the switching contacts of the columns of the matrix of the sensor unit are connected to the control inputs of differentiating elec cops eponymous group ABOUT H  i  i 1234561 8 9 10 11 12 13 M 15 16 UlJlJJTJnJJl ilJ Fig.Z