SU773567A1

SU773567A1 - Time interval digital analyzer

Info

Publication number: SU773567A1
Application number: SU792746716A
Authority: SU
Inventors: Владимир Алексеевич Балясников; Юрий Борисович Зайцев
Original assignee: Всесоюзный Научно-Исследовательский Институт Электроэнергетики
Priority date: 1979-04-02
Filing date: 1979-04-02
Publication date: 1980-10-23

Description

1one

Изобретение относитс к цифровой , электроизмерительной технике и может быть использовано как в системах автоконтрол , так и в приборах универсального и специального назначени .The invention relates to digital, electrical measuring equipment and can be used both in autocontrol systems and in devices for universal and special purposes.

Известны.преобразователи врем импульсного типа, использующие представление аналоговой величины в виде временных интервалов и подсчет числа импульсов генератора эталонной частоты, укладывающихс в одном интервале flj .Pulse-type time converters are known, using the analog value representation in the form of time intervals and counting the number of pulses of the reference frequency generator, stacked in one interval flj.

Недостатком известного устройства вл етс отсутствие возможности анализа измер емых интервалов времени , превышающих заданную длительность .A disadvantage of the known device is the inability to analyze measured time intervals exceeding a predetermined duration.

Известен также цифровой измеритель интервалов времени, содержащий генератор импульсов, ключ, блок управ ени , счетчик количества импульсов , элементы И-НЕ, блок установки счетчиков в нулевое положение, блок запуска, согласующую цепь, датчик времени, элементы НЕ, счетчик времени , переключатель режимов работы 2 .Also known is a digital time interval meter containing a pulse generator, a key, a control unit, a pulse number counter, AND-NOT elements, a counter installation unit at the zero position, a start block, a matching circuit, a time sensor, NOT elements, a time counter, a mode switch work 2.

Это устройство,позвол анализировать интервалы времени по длительности , не имеет возможности осуществл ть автоматический контроль качества исследуемой аппаратуры.This device, allowing to analyze time intervals by duration, does not have the ability to carry out automatic quality control of the equipment under study.

Цель изобретени - расширение функциональных возможностей за счетThe purpose of the invention is to expand the functionality by

5 обеспечени сравнени исследуемого сигнала с заданной нормой.5 provide a comparison of the signal under study with a given norm.

Поставленна цель достигаетс тем, что в устройство, содержащее соединенные последовательно генератор импульсов и ключ, к управл ющему входу которого через блок управлени подключен вход устройства, а также первый и второй счетчики импульсов и блок установки счетчиковThis goal is achieved by the fact that a device containing a pulse generator and a key connected in series, to the control input of which, through the control unit, connects the device input, as well as the first and second pulse counters and the meter installation unit

J5 в нулевое положение, вход которого соединен с выходом второго счетчика импульсов, введены триггер и делитель частоты, при этом первый вход триггера соединен с выходом ключа,J5 in the zero position, the input of which is connected to the output of the second pulse counter, the trigger and the frequency divider are entered, the first trigger input is connected to the output of the key,

20 второй - через делитель частоты с генератором импульсов, выход триггера подключен к объединенным входам первого и второго счетчиков импульсов , а выход блока установки счетчиков в нулевое положение подключен к установочным входам триггера и делител частоты.20 second - through a frequency divider with a pulse generator, the trigger output is connected to the combined inputs of the first and second pulse counters, and the output of the counter installation unit to the zero position is connected to the setup inputs of the trigger and the frequency divider.

На фиг. 1 представлена структурна схема предлагаемого цифровогоFIG. 1 shows the structural scheme of the proposed digital

Claims

30 time interval analyzer; in fig. 2 - BpeiveKHHe diagrams illustrating the principle of the device operation. The digital time interval analyzer contains a pulse generator 1, block a. control, key 3, three fe 4 f frequency divider 5, the first counter of 6 pulses, the second counter of 7 pulses, block 8 of the installation of counters E zero position. The output of the key 3, one of the inputs of which is connected to the output of the control unit 2, is connected to one of the inputs of the trigger 4, whose exit is connected via a frequency 5, to the pulse generator 1, having a follow-up and pulse period; pulses from the output of frequency divider 5 is TH (TH 7 Tf.). The output of the trigger 4 is connected to the input of the first pulse counter 6, which functions as the elevation counter, and to the input of the second counter 7, designed to count the total number of pulses. The device works in the following way. Before the measurements are started, the block 8 sets the first counter of 6 pulses, the second counter of 7 pulses and trigger 4 to the zero state (the zero state of trigger 4 is such that it can only overturn when given a signal from control block 2) . The sequence of pulses under study is fed through control unit 2 to key 3, to the second input of which pulses are delivered from pulse generator 1. If there is a signal from the analyzer at the analyzer input, the pulse from the pulse generator 1, passing through the key 3, will trip trigger 4, which will be in this state before the pulse arrives from frequency divider 5. When a pulse arrives from the output, a trigger 5 divides frequency L 5 again, but the pulse arising at its output will go to the inputs of the first counter of 6 pulses, performing the function of exceedances, and the second counter 7, performing the function of a counter of the total number of pulses. In the absence of the test signal at the analyzer input, the trigger 4 remains in the zero state and does not respond to pulses from the output of the frequency divider 5. At the output of the trigger 4 pulses are missing. The known normalized value corresponds to a certain number of pulses, for which the capacity of the first counter of 6 pulses is calculated. When the first counter b is overfilled with pulses exceeding at its output, the signal reaches a normalized value. The counting of the total number of pulses over the time studied is carried out by the second counter 7 of the total number of pulses. At the end of the research, the counters are reset to zero position and the measurement cycle is repeated. The operation of the device is illustrated by diagrams (Fig. 2), where U is the probing signal at the input of the device; and - voltage at the output of the pulse generator 1, T - period of the pulse following from the pulse generator 1; UvbK.b voltage at the output of the key 3t О j, K () (- voltage at the output of the trigger TC - period of the pulses from the output of the divider 5 frequency; ivyh, B voltage at the output of the divider 5 frequency. Thus, the introduction of new blocks trigger to the frequency divider, as well as new interrelations between elements, allows for an automatic assessment of the quality of the equipment under study by comparing the test sequence of time intervals with a given norm. The digital analyzer is constructed in the form of a compact monolithic mic unit The formula of the invention: A digital analyzer for seed interbanding, containing a pulse generator connected in series and a key, to the control input of which the device input is connected through the control unit, as well as the first and second pulse counters and the unit for setting the counters to zero position, the input of which is output of the second pulse counter, characterized in that, in order to extend the functionality by providing a comparison of the signal under investigation with a given norm, a trigger and A frequency switch, with the first trigger input connected to the key output, the second through a frequency divider with a pulse generator, the trigger input is connected to the connectors of the first and second pulse counters, and the output of the meter installation block to the zero position is connected to the trigger setup inputs and the frequency splitter . Sources of information taken into account in the examination 1. USSR author's certificate 289794, cl. H 03 K 13/20, 1969.

2. USSR author's certificate according to the application No. 1 2514092, class C. 04 F 10/00, 07.27.77 (prototype).