RU1790780C - Device for inputting data from the transducers - Google Patents

Abstract

The invention relates to digital computing and information measurement technology and can be used in information collection and processing systems. The purpose of the invention is to increase the speed of the device. The device comprises a decoder 2, a clock generator 3, three AND elements 4, 17, 22, a counter 5, a switch 6, consisting of sensors 7, normalizers 8, analog-to-digital converters 9, blocks of 10 AND elements, and a block of 11 OR elements, three pulse generators 12, 15, 16, a comparison unit 13, an address generator 18, a memory unit 19, two blocks 20, 21 of AND elements, and a registration unit 29. The object of the invention is achieved by eliminating additional time for processing interrupts from an external computer. 1 ill.

Description

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The invention relates to digital computing and information measurement technology and can be used in information collection and processing systems.

The purpose of the invention is to improve performance by eliminating additional time for processing interrupts from an external computer.

The drawing shows a block diagram of a device for inputting information.

The device comprises a control unit 1, which includes a decoder 2, a clock generator 3, an element 4 and a counter 5, a switch 6, which includes sensors 7, normalizers 8, analog-to-digital converters 9, blocks 10 AND elements and block 11 of OR elements, pulse generator 12, comparison unit 13, inverter 14, pulse formers 15 and 16, element 17, address generator 18, memory block 19, blocks 20 and 21 of AND elements, element AND 22, inputs start 23 and start address 24, outputs of parameter code 25, address code (number) 26, frame change 27 and the output signal of the changed parameter 28, block 29 registration.

The control unit 1 serves to organize the interrogation of the sensors 7 by alternately connecting them to the output of the switch 6. The pulse frequency of the generator 3 is selected sufficient to provide a code selection of the previous value of the parameter from the memory unit 19, its comparison with the current value and writing the new value to the memory 19 is still the address. The counter 5 has a conversion factor corresponding to the number of sensors in the switch 6.

The pulse generators 12, 15 and 16 provide a corresponding delay in the input signal and the formation of pulses with a duration sufficient to trigger the subsequent nodes of the device. Normalizers 8 provide amplification and conversion of signals from the outputs of the sensors 7, to a level corresponding to the shape of the input signal, followed by its transmission to the input of the converter of the same name 9.

The output information from the outputs 25 ... 28 can be registered, for example, by a computer storage device included in the circuit of the object or process control system, or by another recording unit 29.

The device operates as follows.

In the initial state, the counter 5 of block 1 is in the zero state (zero inputs are not shown in the drawing). The output of the comparison unit 13 will be (in the absence of a synchronization pulse at the output of the driver 12) a single signal, therefore, at the output of the inverter 14 there will be a zero signal prohibiting

outputting information to buses 25, 26 and 27. At input 24, there is a starting address of the memory field of block 19, in which an array of data from input sensors will be entered.

0 After the input of the enabling signal to the input 23, the clock pulses from the output of the generator 3 through the open element And 4 are fed to the inputs of the counter 5, the shaper address 18, shapers

5 pulses 12 and 15. The code from the first output of the counter 5 is fed to the input of the decoder 2, which provides alternate switching of information from the outputs of the sensors 7 through the normalizers 8, converters 9

0 and blocks of elements AND 10 to the output of the block of elements OR 11.

At the same time, the code from the first output of counter 5 (the code of the parameter number measured by sensor 7) is fed to the second input

5 of the address generator 18, which provides the executive address of the memory unit 19. In the simplest case, in the absence of a start address code at input 24, the executive address will be equal to the number of the measured parameter, i.e. the code from the output of the counter 5, The code corresponding to the measured parameter 5 in the previous series (previous frame) of measurements is read from the generated executive address and from the output of the driver 15 from the memory unit 19. The read code from the memory 19 is fed to the first input of the comparison unit 13, the second input of which receives the code of the measured parameter in the current frame. The comparison takes place according to the signal taken from the output of the pulse shaper 12.

In the case of comparing these two codes, it is not necessary to transmit the same information about the measured parameter to outputs 25 and 26. If there is no equality in the signal from the output of the shaper 12, the output of block 13 shows a zero signal, and the output of the inverter 14 signal according to which through the block of elements And 20 the value of the changed parameter is output from the output of the sensor 7, the output 26 is issued from the output of the block of elements And 21 the code number of the measured parameter in the current frame. At the output 27, a frame change signal is issued via the AND element 22, if an overflow signal appears at the second output of the counter 5. Data is output accompanied by a control signal at output 28.

Simultaneously with the transmission of the codes at the outputs of the device, a control signal for recording information through element And 17 is received in the memory unit 19 to the memory unit 19. This signal will be used to write the code of the value of the measured parameter to its memory until its new change.

Thus, when comparing information words with identical numbers in adjacent frames, if they coincide, information is not transmitted to the registration unit 29 at the outputs 25 ... 28. In case of incomparable information, the output of the device receives the number of the changed parameter and the parameter value itself, which, in addition, is recorded (stored) in the memory unit 19 for further analysis, i.e. only information words that have changed in the current frame compared to the previous one will be recorded in the memory block.

Claims (1)

The claims A device for inputting information from sensors, comprising a switch, a counter, a memory unit, a comparison unit, a first element And, a clock generator, the output of which is connected to the first input of the first element And, the output of which is connected to the input of the counter, the information output of which is connected to the input a decoder whose outputs are connected to the inputs of the switch, the output of which is connected to the information input of the memory unit and the first information input of the comparison unit, the second information input of which is connected to the output of the unit am ti, characterized in that, for the purpose of increased performance by eliminating additional time for processing interrupts from an external computer, an address shaper, first, second and third pulse shapers, an inverter, second and third I elements, the first and second blocks of I elements are introduced into the device, and the output of the first I / I element connected to the first inputs of the address shaper, the first and second pulse shapers, the information output of the counter is connected to the second input of the address shaper and the first input of the second block of AND elements, the output of the shaper the address is connected to the address input of the memory unit, the output of the first pulse former is connected to the sync input of the comparison unit, the output of which is connected to the input of the inverter, the output of which is connected to the second inputs of the first and second blocks of AND elements, the second and third elements AND, the output of the second pulse former to the input of the third pulse shaper and the read input of the memory unit, the recording input of which is connected to the output of the second element And, the first input of which is connected to the output of the third pulse shaper , the second input of the first element And and the third input of the address generator are respectively the input of starting and setting the starting address of the device, the output of the switch is connected to the first input of the first block of elements And the output of the counter overflow is connected to the first input of the third element And, the outputs of the first and second blocks of elements And, the third element AND, the inverter are the outputs of the device.