SU737916A1 - Time interval meter - Google Patents

Description

I

The invention relates to the field of radio engineering, in particular, to a pulse technique, and is intended to measure the time intervals between pulses of a pulse sequence Hociei.,

Known devices containing drivers, elements And, pulse counters, storage blocks, quartz oscillators, processing units 1., -.

Such devices do not damage the formation or additional data characterizing the measured time intervals. This leads to insufficient speed and narrowing of the field of application.

Of the known devices, the closest to the technical essence is the time interval meter, which contains an information processing unit, an information source, an input unit, a control unit, a digital meter and a storage unit 2.20

This meter does not provide the formation of additional data characterizing the measured time intervals and has a low response time.

The purpose of the invention is to increase the speed of the device. .

This goal is achieved by the fact that in a device that contains an information processing unit, consequently connected information source, an input unit, a control unit, a digital meter and a storage unit, the second input of which is connected to the second control unit, the last output is connected to the second input the digital meter, and the third input memory unit is connected to the first output of the control unit; a defined information block is entered, a detector, a serially connected reset block, a fault detection unit and a switch A reader whose output is connected to the input of the information processing unit, the first input of the detector is connected to the fourth output of the control unit and the third input of the digital meter, the second output koTopbrb is connected to the second input of the detector, the output of the last is connected to the second input of the switch and the first input of the reset unit, the second input of which is connected to the third output of the digital meter, the fourth output of the last one is connected to the second input of the block for detecting failures, the fifth output of the digital meter is connected to the first input of the block determining information, a second input coupled to an output reset unit, and information output determining unit is connected to the third input of the switch, a fourth input connected to the output kotorgo zapominayupdago block.

FIG. 1 shows a block diagram of the device; in fig. 2 is a diagram of the pulse bursts coming from the output of the input device; in fig. 3 is a diagram of pulses generated by the control device.

The device contains an input unit 2, a control unit 3, a digital meter 4, a jamming unit 5, a switch 6, an information processing unit 7, a detector 8, a reset unit 9, a failure detection unit 10, an information determination unit 11.

A device for measuring time intervals operates as follows.

The information characterizing, for example, the parameters of the aircraft, as well as the state of the system itself for recording the parameters of the aircraft, is encoded by the intervals between the pulses of the final sequence of pulses (burst).

Pulse sequences (bursts of pulses) coming from the source of a computer, for example, from a tape mechanism to the input unit 2 are amplified and transformed into positive rectangular pulses.

From the output of the block 2, the packs of rectangular shushuls (see Fig. 2) are fed to the input of the control block 3, which, on the leading edge of each positive pulse of the pack of pulses, generates a signal in the form of pulses that control the operation of the time interval meter.

The control unit 3 is a set of pulse formers and shift elements that provide a time shift between the output pulses. The sequence of impulses followed by 1р1щ.

From the first upstream, the impulse CteTa .news out, from the second 1st exit - impulse T1transfer, from the third output - impulse Reset, from the fourth exit - impulse Start. The digital timer 4 contains a pulse counter, a sync-CK pulse generator, and a crystal oscillator.

The signals of the control unit 3, acting on the synchronizer of the digital meter 4, allow or prohibit the passage of pulses of the crystal oscillator through it. As a result of the accumulation of pulses in the counter, a parallel binary code is formed, which is fed to the output of the digital meter 4.

During the period of conversion of Tiruals between pulses of a pulse from the output of detector 8, a signal is issued allowing the parallel binary code to pass from the storage unit 5 through switch b to processing and displaying information block 7, and prohibiting the operation of reset unit 9.

A start pulse, formed from the pre-next pulse of the first pulse train, is started by a digital meter 4.

With the arrival of the last pulse of the first batch of pulses, a Stop pulse stops at the output of the control unit 3, stopping the digital meter 4. In addition, the storage unit 5 is reset to the same state.

The result of the measurement of the interval between the penultimate and last pulses of the first batch of pulses, presented in the form of a parallel binary code, the pulse Transfer c. the digital meter 4 is rewritten into the storage unit 5. From the storage unit 5, the binary code through the switch 6 enters the information processing unit 7.

In addition, from the digital meter 4, a parallel binary code is fed to the detector 8, the reset unit 9, the failure determination unit 10 and the information determination unit AND.

If the pulse train carries information about the state of the system for registering the parameters of the aircraft, then in the AND service information definition block, a binary code is generated and stored, which is issued via switch 6 to block 7 by resolution of detector 8. This code is a sign of wherein the result of the burst conversion, to which the RELEASE code, is excluded from the processing.

If in the last burst of pulses, for example, the number of pulses turned out to be less than or greater than the specified number, then the lOi error detection block generates and stores the binary code, which also B1 is switched through switch 6 to block 7 according to the resolution of the detector 8.

This code is a feature by which the result of the burst conversion, to which the code relates, is excluded from the processing.

By pulse Reset the digital meter 4 is reset. In addition, with the same pulse, the detector 8 of the end of the stack confirms its initial state.

Claims (2)

A start pulse is triggered by a digital homer 4. A start pulse is a pulse generated from the last HN pulse of the first burst. Consequently, 5 in digital meter 4 will be a binary code characterizing the interval between the first and second bursts of pulses. At the moment of time (Fig. 3), the output of digital meter 4 will have a binary code, at which a signal is output from the output of detector 8 allowing the binary code from storage unit 5 to pass through switch 6 to processing unit 7 and display information . The removal of the signal from the output of the detector 8 is the resolution for passing the binary code from the outputs of blocks 10 and 11 through the switch b to the block 7 of processing and displaying information. Removing the signal from the input of reset unit 9 is a resolution. for its functioning. At time ts. (Fig. 3) with the corresponding code received from the digital meter 4, the reset unit 9 generates a signal that sets the failure determination unit 10 and the information definition unit 11 to the initial state. The stop pulse, formed on the leading edge of the first pulse of the second pulse train, is stopped by the digital meter 4. By the same pulse, the storage unit 5 is reset. Since the interval between bursts of pulses is constant, the code recorded in digital meter 4 will be constant dd between the bursts of pulses. Consequently, this code can serve as a marker for finding the beginning of the papsy pulses of the information processing unit 7. Pulse Transfer code from a digital meter 4 is rewritten into a storage unit 5 .- /. By a pulse Reset the digital meter 4 and the detector 8 of the end of the stack are reset. At the same time, the output signal of the detector 8 prohibits the operation of the reset unit 9 and the code from the fault determination unit 10 and the unit And determining the service information through the switch 6 to the processing unit 7 and allowing passage to the unit 7 of the two-way code through the memory switch 6 with block 5. I1 1pulse Start the start of the digital meter 4, and the cycle of measurement of time intervals is repeated. Thus, simultaneously with the completion of the conversion of the interval between pulses of the pulse train and the measurement result to the processing unit 7, the analysis of these results is completed by the failure determination unit 10 and the information determination unit 11. At the end of the measuring intervals between the pulses of the pulse bursts, processing results are output to the processing block 7 by means of blocks 10 and 11. . IF it turns out that the cleared packet of impulses carried information about the aircraft’s system itself and the packet was malfunctioning, then the converted information of this pack is excluded from processing in block 7. Consequently, block 7 processes only information characterizing the state of the aircraft (basic information). The proposed time interval meter allows generating additional data of the processed information in parallel with the measurement and transmission of the measurement result of the intervals through the switch 6 to the processing unit 7. This additional data is output in block 7 after the end of each burst (in the interval between the bursts). This makes it possible to increase the speed of the time interval meter and expand its functionality. Apparatus of the Invention A device for measuring time intervals, comprising an information processing unit, serially connected information source, input unit, control unit, digital meter and storage unit, the second input of which is connected to the second output of the control unit, the third output of the latter is connected to the second P4 input of the digital meter, and the third input of the storage unit is connected to the first output of the control unit, characterized in that, in order to improve speed, the definition unit of informs is entered into it tion, the detector connected in series a reset unit, a fault detection and switch. The output of which is connected to the input of the information processing unit, while the first detector input is connected to the fourth output of the control unit and the third input of the digital meter, the second output of which is connected to the second input of the detector, the output of the last is connected to the second input of the switch and the first input of the reset unit, the second the input of which is connected to the third output of the digital meter, the fourth output of the latter is connected to the second input of the fault detection unit, the fifth output of the digital meter is connected to the first input of the block information detection, the second input of which is connected to the output of the reset unit, and the output of the information definition unit is connected to the third input of the switch, the fourth input is connected to the output of the bootable unit. Sources of information accepted in the examination of the 7379168, 1. USSR author's certificate number 46UU31, cl. G 01 R 23/00, 1975, 2. USSR author's certificate No. 446943, Yu N 03 K 5/04, 1974, "VsDayNv /. tUtfJetttc S9 lmmmsh (put.Z jiiish OcmoHOf , Carry , " "Start 737916 fpt / t, 3