SU1113794A1 - Information input device - Google Patents

Description

The measurement cycle organiza- tion contains triggers, a group of NAND elements, switching elements, NAND element and a driver, the output of which is connected to the setup inputs of triggers, the inverse outputs of which are connected to the corresponding inputs of the NAND element, the output of which is the output of the unit, My outputs of the triggers, except the last, are connected to the second inputs.

13794

the corresponding elements of the IS-NOT group, the first inputs of which are connected to the first terminals of the switching elements of the group, the second outputs of which are connected to the bus of zero potential, the counting inputs of the i-th trigs: ger (i 1, ... p, p is the number of cycles) besides the first trigger, connected to the outputs of the (i -1) -x elements of the IS-NOT group, the counting input of the first trigger is the input of the block,

I

The device is related to computing and can be used to input analog information from many sensors.

A device for inputting 5 information is known, comprising a signal switcher, an analog-to-digital converter, a control unit, a buffer register, a interface unit, a comparison unit, a memory unit til.

However, the known device does not provide operational control information entered in the computer, and the results of data processing.

Closest to the invention is an information input device comprising a multiplexer connected to an analog-to-digital converter, a display, a printing unit 20 printing, an interface unit, on-; units, decade counter, delay element, rectangular pulse generator, AND element, address counter, trigger, switch, encoder and shift register, the first input of which is connected to the output of the analog-digital converter, the first, second and third outputs of the delay element connected, respectively, to the first input of the AND element, to the first input of the encoder and to the combined counter input of the decade and the second input of the shift register, the output of which is connected to the second input of the encryption j, whose output is connected to the first input of the switch Pa, the output of which is connected to the second input of the player, the second input of the switch is connected to the third output of the display.

The first output of the trigger is connected to the third input of the switch, the second output of the trigger is connected to the fourth input of the switch and to the input of the square pulse generator whose output is connected to the input of the delay element, the second input of the And element is connected to the output of the decade counter, the output of the And element is connected to the input of the address the counter, the first and second outputs of which are connected respectively to the control input of the signal switch and to the first input of the trigger, the second input of which is the control input of the device. The display is connected to the printing unit and the remote computer. At the preparatory stage of the device operation, the display is used in the typical mode, i.e. to exchange information with a computer, display on the screen, edit the output of information on the printing unit. At the measurement stage, after starting the device, a single sequential measurement of a group of input analog signals is carried out and the measurement results are recorded in a symbolic form on the display. The result of the measurements is then visually monitored by the operator and transmitted to the computer for processing 2.

A disadvantage of the known device is the low productivity of work with multiple measurements of the parameters of the process under study.

The purpose of the invention is to increase the productivity of the device with multiple measurements.

3

The goal is achieved in that a device for inputting information comprising a multiplexer, an analog-digital converter, a display, a printing unit and an interface block containing a decade counter, a first delay element, a square pulse generator, a first AND element, an address counter, a trigger , switch, encoder and shift register, the first input of which is connected to the output of the analog-digital converter, the input of which is connected to the multiplexer input, the first, second and third outputs of the first delay element are connected Correspondingly, with the first input of the first element I, the first input of the encoder and the combined inputs of the decade counter and the input of the shift register, the output of which is connected to the second input of the encoder, the output of the latter is connected to the first input of the switch, the output of which is connected to the second input of the display connected to the third output of the display, the first trigger output is connected to the third input of the switch, the second trigger output is connected to the fourth input of the switch and the input of the square pulse generator, the output to second is connected to the input of the first delay element, the second input of the first element I is connected to the output of the decade counter, the output of the first element I is connected to the input of the address counter, the first and second outputs of which are connected respectively to the control input of the multiplexer and the first trigger input, the second input of which The first control input of the device, the second output of the display is connected to the input of the print unit, the first input and output of the display are respectively the information input and output of the device, the analog inputs An ultiplexer is the input of the analog signals of the device, the second and third elements And, the second element of delay, the measuring cycle organizing unit, the output of which is connected to the first input of the second element And, the second input of which is connected to the output of the second delay element, whose input is connected to the input bl379 4

The organization of measurement cycles and the output of the third element And, the first input of which is connected to the first input of the trigger, the third input of which is connected to the output of the second element And, the second input of the third element And is the second control input of the device.

In addition, in the organization unit

10 measurement cycles introduced triggers, a group of elements AND-NOT, switching elements, element AND-NOT and a driver, the output of which is connected to the installation inputs of the trigger,

t5 the inverse outputs of which are connected to the corresponding inputs of the NAND element, the output of which is the output of the block, the forward outputs of the flip-flops, except the last, are connected

20 with the second inputs of the corresponding elements of the NAND group, the first inputs of which are connected to the first terminals of the switching elements, the second terminals of which are connected to

25 bus zero potential, counting inputs -X trigger (-i 1, ..., P, n - the number of cycles), except for the first trigger, connected to the outputs ((t-1) -x elements AND NOT groups,

The counting input of the first trigger 30 is the input of the block.

FIG. 1 is a block diagram of the device; FIG. 2 is a block diagram of a block for organizing measurement cycles;

A device for entering information (Fig. 1) contains a multi-cpp 1, an analog-to-digital converter 2, a display 3, a print block 4, a block

40 5 interface j counter 6 decades, first delay element 7, generator

8 angle pulses, element

9I, address counter 10, trigger 11, switch 12, encoder 13 and

45 shift register 14, as well as the element 15 And, the element 16 And, the second element 17 of the delay and block 18 of the organization of Daklov measurements.

Block 18 of the organization of cycles from 5Q measurements (Fig. 2) contains triggers 194–19c, a group of AND-NOT elements, switching elements 21 "., Element 22 AND-NOT and a former 23.

55 The operation of the device begins with the operator giving a pulse to the first control input of the device, Trigger 11 is set to one in which the switch 12 connects the generator 13 to the second display input and starts the generator 3, Each pulse of the generator 8 corresponds to a pulse on the outputs of the element 7 delay. The 6 decade counter is in the initial state, in which the pulse from the output of the delay element 7 passes through the element 9 and to the counting input of the address counter 10 For each change in the contents of the address counter 10 multiplex 1 signals connects to the input of the analog-digital converter 2 another sensor measured analog values. The measurement result from the analog-digital converter 2 in the form of a parallel decadal binary-decimal code is entered into the shift register 14. The impulse from the output of the delay element 7 is fed to the counting input of the counter for 6 decades and to the input of the shift register 14, issued to the outputs of the next decade the measurement result. The pulse from the output of the delay element 7 is the symbolic eight decade decimal code from the encoder 13 is transmitted through the switch 12 to the display. After the output from the register 14 of the shift of the last decade of the result of one measurement, the counter of 6 decades passes to the initial state. Then, the switching of the next sensor at the input of the device is performed, and the cycle of measurement and the subsequent decadal transmission of information to display 3 is repeated. When the address counter 10 overflows, trigger 11 is reset. This completes the first measurement cycle of the sensor group. According to the results of measurements of the first cycle displayed on the display, the operator judges the correctness of the initial experimental conditions, the operation of the sensors and the input-output device. If the results are satisfactory, then they are accepted as initial conditions for testing the material. In this case, the operator delivers the permissive potential to the second control input of the device, then simultaneously with the start of the material testing process, sends a signal to the first control input of the device. The second measurement cycle starts. The cycle is carried out similarly to the first one, with the only difference that after it ends with the output of address counter 10, imyuls passes through element 16 AND to the input of the cycle counter, adding one to its contents. The same pulse, having passed delay element 17 and element 15 I, sets the trigger 11, triggering the third measurement cycle, to one state. Thus, the third and subsequent cycles are performed without operator intervention. The time intervals between stations can be set by selecting the appropriate delay value of delay element 17. After testing a certain number of cycles, the block 18 overflows, the pulse from the output of the delay element 17 does not pass through the element 15, and setting the trigger 11 to one, i.e. the continuous sequence of cycles is terminated. The measurement stage is complete, with the display showing the measurement results for all cycles. The operator can, using typical display modes, display the results on the printing unit 4 and transfer them to a computer for further processing. - The unit works as follows. After switching on the power supply of the I / O device and reaching the nominal voltage, the power supply buses of the electronic circuits of the device at the output of the shaper 23 briefly (less than 1 s) maintain a low level potential that sets the triggers 19, | - 19f to zero. This state of the counter is initial, in which all inputs of element 22 of AND-NE have a high potential, and the output of element 22 of AND-NE and, therefore, at the output of block 18, a potential of low level is maintained. In any other combination of states of the flip-flops 19 /) - 19 ', a high potential is established at the output of block 18. The counter size and, consequently, the number of measurement cycles is determined by the state of the switching elements of group 21, f 2} yq. . The switched-on switching element 21 blocks the connection between the direct output of the trigger 19; j through the I-NE element 20 with the C input of the trigger 19. In this case, the block 18 operates as a l-bit binary counter, since the triggers do not participate in the cycle counting remain in the original state. Therefore, with the switching element 21 on, the block 18 can have 2 states. The device can operate in single or cyclic modes, depending on which potential is installed at the second control input of the device. The value of this potential is set by the operator in the initial state of the device and cannot be changed during the operation. If a low level potential is set at the second control input of the device, then the input and output device operates in a single mode, i.e. after launching it through the first control input, only one measurement cycle of physical quantities is performed, which ends when the trigger 11 is set to the zero state by a pulse from the output of the address sensor 10. If the potential level is set to high at the second control input, the device works in cyclic mode. In this case, after starting the device at the first control input and performing the first cycle of measurements, the pulse from the output of the address counter 10 sets the trigger 11 to the zero state, and also, having passed element 16 AND, increases by one the contents of block 18, which from that moment on opens the circuit 15 And on the first input. / The same pulse, delayed by the delay element 17, passes through the open element 15 And sets the trigger 11 in the unit state, thereby triggering the next measurement cycle. Similarly, at the end of each subsequent cycle, the content of block 18 is increased by one, after which the reading of block 18 is equal to the number of measurement cycles performed from the moment the device started up via the first control to the main input of the device. By the moment of launching the last of the specified 2 points, the contents of the counter are equal, at which all the low-level triggers of the counter are in one state. At the end of the next cycle, I, block 18 is reset. At its output, a low-level potential is formed, KOTOpbtfi closes element 15 I and prohibits the passage of a pulse from the output of element 17 of the delay in setting trigger 11 to one state, i.e. The launch of a new measurement cycle is prohibited. Thus, when the switching element 21i is turned on, after the device has been launched, the first control input automatically performs 2 measurement cycles of a group of physical quantities at the device input. Consequently, this device automatically controls the measurement cycle and allows you to significantly increase operator productivity.

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Claims (2)

LIBRARY S (21) 3547269 / 18-24 (22) 02.02.83 (46) 09/15/84. Bull. No. 34 (72) Yu.D. Fedorov, V.I. Marusev and A.A. Kashkirov (53) 681.327.21 (088.8) (56) 1. USSR Copyright Certificate No. 737943, cl. G 06 F 3/05, 1980. 2. USSR author's certificate No. 966683, cl. G 06 F 3/00, 1981 (prototype).