SU529443A1

SU529443A1 - Multichannel device control

Info

Publication number: SU529443A1
Application number: SU2155078A
Authority: SU
Inventors: Олег Павлович Дьяков
Original assignee: Предприятие П/Я А-1001
Priority date: 1975-07-11
Filing date: 1975-07-11
Publication date: 1976-09-25

Description

Изобретение относитс к области автоматики и может быть использовано дл контрол различных неэлектрических параметров , например температуры, освещенноетн .The invention relates to the field of automation and can be used to control various non-electrical parameters, such as temperature, illuminated.

Известно многоканальное устройство контрол , содержащее генератор импульсов, распределитель импульсов, формирователи импульсов, триггеры, ключи, которое может быть использовано дл контрол различных параметров, например, температуры или освещенности 1,A multichannel control device is known, which contains a pulse generator, a pulse distributor, pulse shapers, triggers, keys, which can be used to control various parameters, such as temperature or illumination 1,

Однако устройство имеет сравнительно невысокую точность контрол , обусловленную вли нием диодов и трансформатора, используемых в измерительной схеме.However, the device has a relatively low control accuracy due to the influence of the diodes and transformer used in the measuring circuit.

Известно также многоканальное устройство контрол Jсодержащее распределитель импульсов, вход которого соединен с генератором импульсов, а выходы через формирователи и шульсов подсоединены к чувствительным элементам, элемент ИЛИ, элементы сравнени и ключи, элементы пам ти 2It is also known that a multichannel monitoring device, containing a pulse distributor, whose input is connected to a pulse generator, and the outputs are connected via sensing elements and pulses to sensitive elements, an OR element, a comparison element and keys, a memory element

Известное устройство обладает погрешностью , обусловленной вли нием ключей иThe known device has an error due to the influence of keys and

нестабильностью коэффициента усилени усилител .the instability of the gain of the amplifier.

Цель изобретени - повысить точность контрол неэлектрических параметров.The purpose of the invention is to improve the accuracy of monitoring non-electrical parameters.

Это достигаетс тем, что устройство контрол снабжено преобразователем тока в частоту, и генераторами эталонных импульсов , причем выход преобразовател тока в частоту соединен со входами гене-This is achieved by the fact that the monitoring device is equipped with a current-to-frequency converter, and reference pulse generators, the output of the current-to-frequency converter being connected to the inputs of the generator

раторов эталонных икшульсов и одним из входов элементов сравнени через формирователь импульсов и ключ, ЗТ1равЛ51ЮШ1ШRatches of reference X-pulses and one of the inputs of the comparison elements through the pulse shaper and the key, ZT1 ravL51YSh1Sh

вход которого подключен к выходам распределител импульсов через второй формирователь импульсов и элемент ИЛИ , выходы генераторов эталонных импульсов подсоединены к другим входам элементов сравнени , выходы которых соединены через ключи с элементами пам ти.the input of which is connected to the outputs of the pulse distributor through the second pulse shaper and the OR element, the outputs of the reference pulse generators are connected to other inputs of the comparison elements, the outputs of which are connected via keys to the memory elements.

На чертеже показана схема предлагаемого устройства.The drawing shows a diagram of the proposed device.

Устройство содержит чувствительные элементы 1, представл ющие собой, например , пол тгроводниковые терморезисторыThe device contains sensitive elements 1, representing, for example, field conductor thermistors.

Claims

when monitoring temperature or photoresistors when monitoring illumination, additional resistors 2, current-to-frequency converter 3, for example, a quantum magnetometer, the number of inputs equal to the number of sensitive elements, 4 pulse generator, 5 pulse distributor, 6 pulse generators , element 7 OR, pulse driver P, key 9, driver 10: pulses, AND generators and 12 pulses, comparison elements 13 and 14, keys 15 and 16, naivi.HTH elements 17 and reset elements 18. The device operates in the following manner: To sensitive elements 1, there will be pulses of a certain length from the outputs of the distributor of 5 pulses through the formers of 6 pulses. Thus, a current pulse arrives at each input of the converter 3, the value of which is determined by the resistance of the sensing element 1. In the converter 3, the input current is converted to the frequency of the output voltage. When used as a converter of a quantum magnetometer, the input current is supplied from the D winding of the converter, the output voltage is sinusoidal, the conversion accuracy is quite high (above 10%). The duration of the impch-ls supplied to the input of the converter 3 is chosen of such a value; so that the output signal reaches a steady-state value. Pulses from the outputs are distributed by 5 pulses through element 7 OR are sent to the driver of 8 pulses, the key from the output of which opens key 9. The pulse at the output of the driver of 8 pulses has a delay with respect to pulses at the input of the converter 3 by a value, providing the output of the converter 3 to the steady state. Through the open key 9, the voltage from the output of the converter 3 is fed to a pulse generator i O, in which the half-period of the sinusoidal voltage is converted into a rectangular pulse, which is applied to. ; ..: ii from the inputs of the elements of the comparison. By trans.: Its front of the pulse is started by the generators 11 and 12 reference pulses, bia drawing shows a diagram of the device with two levels of control. If the pulse duration at the output of the windrower 10 pulses is longer than the pulse width of the generator 11 defining the upper tolerance, This triggers comparison element 13, which through memory key 15 turns on memory element 17. If the pulse duration at the output of the pulse driver 10 is shorter than the pulse width of the generator 12, which determines the lower tolerance, the comparison element 14 is triggered, which through the public key 16 turns on the memory element 17. If the device is monitored over a greater number of levels, then generators of reference pulses are added, the duration of which corresponds to specified levels, comparison elements, and also memory elements in which the state of the monitored parameter in the object is recorded. The memory elements 17 are reset via the elements 18 of the discharge from the previous output of the distributor 5 pulses. In this way, the device will dehumidify & the conversion of the measured parameter to the pulse duration, which is compared with the reference pulse width. The accuracy of the control is significantly improved, since there are no switches and an amplifier in the measuring circuit, and the conversion of the current to the time interval is performed using a precision converter. Comparison of the output pulse with the reference is carried out by the duration, which eliminates the error due to the departure of the gain factors. The total error of the device, determined by the errors of the converter, the generators of the reference pulses, the elements of the comparison, the driver of the pulses does not exceed 0.5%. The invention has a multichannel control device containing a pulse distributor, whose input is coupled with a pulse generator, and outputs through pulse shapers that connect a signal to sensitive elements, memory elements, OR element, comparison elements and keys, which are distinguished by the fact that accuracy of control of non-electric parameters, it is equipped with a current converter to the frequency of the I-generator of the standard pulses, and the output of the current-frequency converter is connected to the inputs of the generators of the reference impulses SHTOfi comparison through the pulse shaper SOY and key, the control input of which is connected to the outputs of the distributor pulse through the second pulse shaper and the OR element, the outputs of the generator of the reference pulses are connected to other inputs of the standard comparison pulses, the outputs which are connected via keys with memory elements. Sources of information taken into account in the examination: 5 1. Authors certificate of the USSR No. 162341, M. C G O1 K 7/20, 03.12.62.

2. USSR author's certificate number 335553, M. Kl..OO K 7/10 05.10. 70 (prototype).