SU1298731A1 - Information input device - Google Patents

Abstract

The invention relates to information receiving and processing devices and can be used to input telemetry information of the same type from several receiving stations into a processing machine. The purpose of the invention is to increase the reliability of the input information. The device contains reception channels 1 and 2, in each of which synchronizing and measuring pulses are counted by counters 12 and 13 and fed to blocks 6 and 7 of the subtraction. tani. In the subtraction blocks, the confidence level of the received information is determined by subtracting from a number of received synchronizing and measuring pulses a given number formed by the setter 3 numbers. The obtained absolute values of the difference of the numbers from the two channels arrive at the comparison element 4, where the priority of the channel is determined by the result of the comparison less. Signals from element 4 are sent to trigger 5, the output levels of which allow the output of information from the device’s priority channel. Thus, the device takes into account the fact that during the reception of information from the channels, cases of both the loss of part of the information pulses and the occurrence of additional false information pulses due to interference are possible. 2 Il. S BOB CO 00

Description

t129

The invention relates to devices for receiving and processing information and can be used for transmission over the communication line of the same type of telemetry information from several receiving stations to a processing machine.

The aim of the invention is to increase the reliability of the input information.

FIG. 1 shows a block diagram of the device; in fig. 2 is a diagram explaining his work.

The device contains channels 1 and 2 of reception, unit 3 of a number, element 4 of comparison, trigger 5, blocks 6 and 7 of subtraction.

Channel 1 (2) of reception contains block 8 (9) of reception of input signals, shaper 10 (11) pulses, 12 (13), block 14 (15) of registers, block 16 P) of the elements I.

In each channel, the blocks perform the following functions.

The input signal receiving unit 8 (9) is designed to amplify the input signals. The shaper 10 (11) pulses produces, using reference pulses and pulses of the marker of the main switch, input gates. The number of gates is determined by the number of time slots in the frame of the main switch, the duration is determined by the length of the time slot. The time position of each gate corresponds to the time allotted for polling the corresponding channel of the main switch. In addition, information pickup pulses are aborted in the shaper. For this, delayed reference pulses are used, pulses generated from the leading edge of the last entry gate. The temporary position of the first pulse corresponds to the position of the first reference pulse in the second frame of the main switch. The leading edge of the last entry gate deforms the polling and reset pulse of counter 12 (13). In addition, in the driver 10 (11) of pulses, there is a delay of service signals for the time during which a delay in the output of information occurred, i.e. for the frame time of the main switch

Counter 12 (13) counts the reference and measuring pulses in the frame. Counting authorization is granted only if the main switch is present. Output Matching-Counter Schemes

12

interrogated by a pulse generated in the imaging unit 10 (11) pulses by the leading edge of the last input gate. The same pulse resets the counter. From the counter, the number in double code is read by the number of measuring and synchronizing pulses in the frame and is fed to block 6 (7) of the subtraction.

The setpoint number 3 for the channels generates numbers in the binary code, equal to the number of reference and measurement pulses in the frame, and enters them into block 6 (7) of the subtraction.

Block 6 (7) of the subtraction of the reference and measurement pulses counted by the counter 12 (13) subtracts the number of reference and measurement pulses in the frame, specified by the unit of the number 3, and outputs the absolute value of the difference of these numbers.

Common to the first and second channels element 4 comparison and trigger 5 perform the following functions.

Comparison element 4 compares two numbers in binary code and outputs a command (depending on the result of the comparison) to one of the inputs of trigger 5. The trigger is the actuating element of the comparison unit. At the beginning, there are no signals at the trigger inputs. A trigger can be in one of two stable states:, or,. If the trigger was in the state,, then a high level of the shoulder will allow information to be output through a block of 16 elements AND of the first channel to the output block of the OR element. If the number of frame pulses, counted by counter 12 (13), is closer in magnitude to the number of frame pulses specified by the setting unit 3 numbers than the number of pulses .. counted by counter 12 (13), then the signal from the second output of the comparison element 4 will switch the trigger , and allow the issuance of information through the element And the second channel.

The device works as follows.

Two identical service and information flows are received in blocks 8 and 9 of receiving input signals and from there - in blocks 14 and 15 of registers (for sequential storing information of the whole frame of the main switch) and in drivers 10 and 11. Simultaneously with the start of information input

blocks 14 and 15 of the registers to the counters 12 and 13 (after passing the pulse of the marker of the main switch) from the blocks 8 and 9 of the input signals received, the measuring and reference pulses of this frame. By the moment of the last information input in the frame of the channel interval, the counting of pulses in the frames of both streams is completed.

 the high level of the device. The proposed device for entering information ensures the formation of numbers equal to the number of synchronizing and measuring pulses, determines the level of confidence in the information received by each channel and assigns priority to the channel with the highest level of accuracy. Formula for entering information.

pulses generated in format-fO Delayed in the formers 10 and 11 liters x 10 and 11 from the leading edge, over a time of one frame, also the signals of the last input gate occur into the blocks 16 and 17 and the output counters 12 are output and 13 and their output of the device only at line reset. Codes of numbers from counters 12 and 13 are received in blocks 6 and 7 of the subtraction, 15 blocks 16 and 17 where the trigger count is 5. from the contents of the counter, with the number of frame pulses specified by the setter 3 numbers. The absolute values of the difference of numbers obtained in blocks 6 and 7 are fed to the element 4 of comparison. If, as a result of the comparison on element 4, the number from the first channel is less than the number from the second channel, then on the first output of the comparison block

Turn on the signal and set the trigger for 25 information. to state. The input signal from a single trigger output will allow information through the block of 16 elements AND of the first channel.

If, as a result of a comparison on an EZO containing two reception channels, element 4 of the number from the first comparison channel, the output of which connects more than the number from the second channel to the trigger inputs, the channel inputs, then the priority to issue reception information are inputs of the device, is tied to the second channel, and the output of the output channels of the reception are the outputs of the device through the block 17 elements And the device, the first and second outputs the information of the second channel. The trigger moves are connected to allow-.

If the numbers 4 that are compared on the first and second channel's ele- mentary inputs turn out to be equal, then the reception signals, respectively, that is, the output from element 4 does not change due to the fact that trigger 5 and information-40 for increasing the reliability of the input data through the channel selected in the pre-information, are entered into it by the master frame. Thus, counting the number and two subtractors, the information in the frame of both channels, the measuring outputs of the first and second flat and synchronizing pulses of the receiving signal are connected, respectively, causes a well-defined ccsc-jf but with the inputs of the first group of the first output signal trigger 5 n of the corresponding and second subtraction blocks, exitingly high or low digits of the number are connected to the inputs of the interrogation buses of blocks 16 and 17 of the second group of subtraction blocks, whose output elements I. are connected to the perK inputs the end of the input of the information-5Q and second groups of the frame comparison element in blocks 14 and 15 of the register, respectively.

the trigger 5, performing the command of the comparison element 4, gates the output schemes of coincidence of blocks 16 and 17 of the priority channel, and the shapers 10 and 11 give a series of pulses to pick up the frame information registers recorded in blocks 14 and 15. In this case, only the information of the priority (for a given frame) channel is output.

quoting the questionnaire elements AND

 The high level of the device. The proposed device for entering information ensures the formation of numbers equal to the number of synchronizing and measuring pulses, determines the level of reliability of information received by each channel, and assigns priority to the channel with the highest level of accuracy. The signals held in drivers 10 and 11 are also received for the duration of one frame to blocks 16 and 17 and are output by the device only at lines 16 and 17 of trigger 5.

Claims (1)

Formula of the Invention. ti information. containing two receive channels, a comparison element whose outputs are connected to the trigger inputs, the inputs of the receive channels are the device inputs, the outputs of the receive channels are the device outputs, the first and second trigger outputs are connected to Supporting n 1 z n g 3 t / NanyAa I  1 2 p. I i i in P -1 1 p-1 1 „IL wa ™ Compiled by I. Karpov Editor N. Egorov Tehred M. Khodan 1 GC Proofreader M. Samborska Order 889/50 Circulation 673. Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, Projecto st., D 0US ..