SU1564672A1 - Device for collection of telemetering information - Google Patents

Abstract

The invention relates to telemetry and can be used to collect telemetry results from a plurality of space-controlled points. The purpose of the invention is to improve the noise immunity of transmitted signals. The device contains at each controlled point sensor, analog-digital converter, transmitter, distributor, elements AND, elements OR, line unit, receiver, clock generator, pulse driver, adder, encoder, distributor, keys, sinusoidal signal generators, amplitude detector, modulator, threshold element. The device performs bitwise signal transmission at the same time from all monitored points at the collection point. 1 il.

Description

(21) 4445713 / 24-24

(22) 06/21/88

(46) 05/15/90. Bul Number 18

(71) Tyumen Industrial Institute. Lenin Komsomol

(72) V.V.Kitaev and V.V.Yarmolenko

(53) 621.398 (088.8)

(56) USSR Copyright Certificate No. 1249560, cl. G 08 C 19/28, 1986.

(54) DEVICE FOR COLLECTING TELEMETRIC INFORMATION.

(57) The invention relates to telemetry and can be used to collect telemetry results from a plurality of space-controlled points. purpose

invention - increasing the interference of the transmitted signals. The vrr device contains a sensor, analog-frica converter, transmitter, distributor, AND elements, OR elements, line unit, receiver, clock generator, pulse shaper, adder, encoder, distributor, keys, generators at each controlled point. sinusoidal signals, amplitude detector, modulator, threshold element. The device performs bitwise signal transmission at the same time from all monitored points at the collection point. 1 il.

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The invention relates to the field of telemetry and can be used to collect telemetry results of physical quantities from a plurality of remote telemetry sensors.

The purpose of the invention is to improve the noise immunity of the transmitted signals in the device.

The drawing shows the functional diagram of the device.

The device contains a sensor 1, ADC 2, transmitter 3, distributor 4, elements AND 5, -5p, element OR 6, key 7 and line unit 8, receiver 9, element OR 10, generator 11 clock at each controlled point pulses, shaper 12 pulses, adder 13, encoder 14, distributor 15, keys 16, -16P, generators 17, -17n, sinusoidal signals, amplitude

the detector 18, the modulator 19, the elements And 201-20P and the threshold element 21, 22 - the outputs of the device,

The device works as follows.

When the electropitagic generator is turned on, the generator 11 begins to generate pulses that are fed to the input of the distributor 15, the ac of its first output through the imaging unit 12 and the communication line to all controlled points. After the controlled point finishes the cycle of operation of the distributor 4, the impulse from its first output is given by a command-and-p VI 2, according to which a reading of the sensor 1 P occurs, a parallel code. Upon arrival from the collection point of information to the controlled point of the next pulse from the remaining outputs of the distributor 4 to the second

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| elements of the elements And 5 receive reading pulses. In those controlled points where the output of the converter 2 in the corresponding bit is recorded O, the output connected to this bit through the element 5 and the element OR 6 will be deny the potential for key 7, the key 7 is open, and to the communication line the transmitter 3 is not connected. In the same controlled points where 1m is recorded in the readable bit, the transmitter 3 is connected in parallel to the communication line. Depending on the number and rating of the transmitters (capacitors) connected to the communication line, a certain total emk st link - |. Consequently communication, will be defined

the resonant frequency of the oscillatory circuit consisting of the capacitance of the line in the seri (with the capacitor connected) and the inductance of the receiver 9 (p. taking into account the distributed inductance of the communication line). The next pulse of the generator 11 at the collection point will arrive at the input of the distributor 15, while the modulator 19 will come from the first generator 17 through a corresponding analog switch 16 a sinusoidal signal with a frequency w "equal to | the smallest of the resonant frequencies of the communication line for the case of three controlled points, the following situation: from the first controlled point is read 1 (the capacitor is connected), from the second 1 (also the capacitor is connected), from the third 1 (the capacitor is connected).

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The outputs of the encoder 14 at this time will be a combination of 111. If at the moment the values of the read bits at all three controlled points are actually equal to one, then due to the appearance of a resonance at the input of the amplitude detector 18 a large amplitude radio pulse will arrive, and the output signal of the amplitude de - Vector 18 will exceed the threshold level value in element 21, and from its output, And 20 will arrive at the inputs of Elements 20. Thus, the outputs of elements of And 20 will be one, which will indicate the values of the read bits of all the counters Listed items. If, when the modulator produces a radio pulse 19 at a frequency of ujp., The read bits of the controlled points are different, then the resonance

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there will be no output from the threshold element 21 to the inputs of the elements And 20 O will enter.

Further, when the next pulse is fed from the generator 11 to the input of the distributor 15, the pulse is wits at the input of the analog switch 16 and then the presence of resonance at the next frequency, i.e. the presence of another of the N possible combinations of connected containers is revealed. From the example with three controlled points, this combination is the 111 combination, i.e. in the first and second controlled points, capacitors are connected (the value of the readable bit is 1), on the third - not connected (the value of the bit is O), etc. (The N + O th pulse of this cycle transfers the system to reading from all controlled points of the next (second) bit from the output of converter 2.

Thus, the choice in the present invention when transmitting information as an informative parameter of the resonant frequency of the communication line allows to increase the noise immunity of the transmitted signals over the communication line.

Claims (1)

Invention Formula A telemetry data acquisition device containing a sensor at each monitored point, the output of which is connected to the information input of the analog-digital converter, each output of which is connected to the first input of the corresponding AND element, the outputs of which are connected to the inputs of the OR element, the output of which is connected to the first key input, whose input is connected to the first line. Device, the transmitter, the first output of which is connected to the second key input, the second output of the transmitter is connected to the second communication line of the device, the line unit whose input is the output of the third communication line, the output of the linear unit is connected to the distributor clock input, the first output which is connected to the clock input of the analog-to-digital converter, the remaining outputs of the distributor are connected to the second inputs of the corresponding impulses And, at the data collection point the clock pulses, the driver pulses, the output of which is the input to the third communication line, threshold element, receiver, encoder, characterized in that, in order to improve the noise immunity of the transmitted signals at each controlled point, the transmitter is made in the form of a capacitor, and at the point of information collection the receiver is made in the form inductor coils and entered modulator, amplitude detector, distributor, elements AND, generators of sinusoidal signals, keys, adder and element OR, the first and second outputs of the modulator, the first and second inputs of amplitude the first detector and the first and second terminals of the receiver are combined and outputs the first and second communication lines respectively, the clock generator output Compiled by I.Kuznetsov Editor O.Spesyvykh Tehred L.Serdyukova Order 1163 Circulation 441 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 646726 connected to the distributor input, the first output of which is connected to the pulse driver output, each of the other distributor outputs connected to the first input of the corresponding key, to the corresponding inputs of the encoder and the OR element, the output of the latter connected to the first JQ input of the modulator, the output of the amplitude detector through the threshold element is connected to the first inputs of the elements AND, each output of the encoder is connected to the second input of the corresponding element J5, the output of which is the corresponding output of the device whose output of the sinusoidal signal generator is connected to the second input of the corresponding key The output of which is connected to the corresponding input of the adder, the output of which is connected to the second input of the modulator. Proofreader M.Sharoshi Subscription