SU1548823A1 - Device for protection of microwave instrument from effect of breakdown in waveguide channel - Google Patents

Abstract

The invention relates to radio engineering, in particular to the protection of a microwave device. The purpose of the invention is to increase the speed and reliability of protection. If a breakdown occurs in the waveguide path 2, all sensors 4.1 ... 4 K of power located behind the arc will detect a loss of power. From the sensors located to the point of occurrence of a sample, the signals will continue to flow. All signals go to conversion unit 5. Logic zeros or ones are formed at the outputs of this block. Next, the signals are processed in logic block 6. As a result, a signal is generated that arrives at the control input of the microwave device, and the power at its output disappears. 1 il.

Description

one

The invention relates to the field of microwave radio engineering and can be used in the development of transmitting equipment for various purposes.

The purpose of the invention is to increase the speed and reliability of protection and enhance functionality.

The drawing shows a functional diagram of a microwave device protection device.

Microwave device 1 with a waveguide path 2, along which are distributed through communication elements 3.1,.,., З.К, sensors 4.1,. .., 4.K (), whose outputs are connected to the level conversion unit 5, the outputs of which are connected to the i-th logic unit 6, the output of which is connected to the control input of the microwave device 1. Each of the sensors 4.1, .. ., 4.K made in the form of a power sensor, and each of the elements 3.1 ,, .., Z.K communication is made in the form of a directional coupler, K-1 imitation 30

35

tori 7.2, ..., 7.K in the form of a controllable 25 l and rrobo indication on the attenuator element each, connected between the outputs of the same-named communication elements 3.2, ..., З.К (except the first) and the inputs of the same-name sensors 4.2, ..., 4.K breakdown (except the first). The device also supports / holds the 2nd logical block 8 connected to the outputs of the 1st logical block and the display unit 9 (the connections are indicated in the claims) The level conversion unit 5 contains K comparators 10.1, ..., 1O.K , the first inputs of which are combined and form the input of the reference voltage, and the signals of the K power sensors 4.1, ..., 4.K are fed to the second inputs. In the presence of a signal from the power sensor at the output of the comparator of the same name, the level of the logical unit is received, which is fed to the input of the 1st logical block 6.

The first logic block 6 contains K-. 1 elements NON-TERMINAL A.2, ..., 11.K and element OR 12.

When signals from block 5 of level conversion to the inputs of the UNEQUALITY 11.2, ..., 11. K elements are received, a logical unit level is formed at their outputs in the presence of a breakdown and a logical zero in its absence. With the appearance of a logical

40

45

50

15.3 is not formed.

In the event of a breakdown in the path section from the directional coupler 3.2 to the directional coupler 3.3, the first input of element 13.3 contains the level of logical zero, the second - logical unit, and the level of logical unit from the output of element 1 3. It includes an indication of the sample on indicator 15.3. When a breakdown occurs in other parts of the waveguide path, a comparison is always made on the elements UNIMQUENCY of the signals from the outputs of the first logic unit 6 and the signals from the outputs of the two previous elements UNIMAL 13, combined on the element OR 14 with the corresponding display.

When a breakdown occurs in the waveguide path 2, all the sensors 4.1, ..., 4.K power located behind the arc detect the loss of power. Signals about the presence of microwave power from sensors 4 located to the place of occurrence of the sample continue to be received.

All signals come to conversion unit 5, the outputs of which form levels of logical zeros or ones, depending on

units at any input of an element OR 1255 levels of signals from sensors 4 power. Next, the signals arrive at the first logic unit 6, where, as a result of processing the output at the output, a level of the logical unit is formed, which arrives at the control input of the microwave device 1.

The second logic block 8 contains К.2 of the UNEQUALITY elements 13.3, ..., 13.К and К.З elements OR 14.4, ..., 14.К.

The display unit 9 contains К.1 of indicators 15.2, .. ,, 15.К.

The device works as follows.

When a logical unit signal arrives from the output of element 11.2 of the first logic unit 6 to the input of the display unit 9, the microwave probe is indicated on the indicator 15.2.

At the same time, the signal arrives at the first input of the UNEQUALITY 13.3 element, the second input of which receives a signal from the output of the UNEQUALITY 11.3 element of the first logical block 6. When these signals coincide, which occurs when a breakdown occurs in the path section from the coupler 3.1 to the directional coupler 3.2 logical 0

five

5 l and rrob display on the element

0

five

0

15.3 is not formed.

In the event of a breakdown in the path section from the directional coupler 3.2 to the directional coupler 3.3, the first input of element 13.3 contains the level of logical zero, the second - logical unit, and the level of logical unit from the output of element 1 3. It includes an indication of the sample on indicator 15.3. When a breakdown occurs in other parts of the waveguide path, a comparison is always made on the elements UNIMQUENCY of the signals from the outputs of the first logic unit 6 and the signals from the outputs of the two previous elements UNIMAL 13, combined on the element OR 14 with the corresponding display.

When a breakdown occurs in the waveguide path 2, all the sensors 4.1, ..., 4.K power located behind the arc detect the loss of power. Signals about the presence of microwave power from sensors 4 located to the place of occurrence of the sample continue to be received.

All signals come to level conversion unit 5, the outputs of which form levels of logical zeros or ones, depending on

levels of signals from sensors 4 power. The signals then go to the first logic unit 6, where, as a result of processing, a signal is generated that arrives at the control input of the microwave device 1, and signals are output for subsequent processing in the second logic unit 8 and display unit 9.

When a signal is disturbed by the control input of the microwave device 1, the power at its output disappears and, therefore, the microwave discharge also disappears.

Claims (2)

Invention Formula 1. Device for protecting a microwave device from exposure to breakdown in a waveguide path, containing K sensors, K communication elements intended for distribution along the path, the outputs of which are connected to the inputs (sensors of the same name, a level conversion unit whose inputs are connected to the outputs of the respective sensors., and the first logic unit, the inputs of which are connected to the corresponding five 0 The tori are the outputs of a level conversion unit. 3. The device according to claim 1, characterized in that, in order to extend the functionality by providing self-control, it is equipped with K-1 sample simulators, made in the form of a controlled attenuator each and connected between the outputs of the same-name directional connectors and the inputs of the same-name sensors sample 4. The device according to claim 1, characterized in that, in order to extend the functionality by ensuring the localization of the sample path, a second logic block is implemented, made in the form of K-2 elements UNIMQUALITY and K-3 of OR elements, and the display unit, made in K-1 type of indicators, with the first and second inputs of the first element UNEQUAL VALUE connected The outputs of the conversion unit are relevant to the first and second complement, and the output is connected to a terminal for connection to the control input of the microwave device, characterized in that, in order to increase speed and reliability of protection, each of the sensors is made as a power sensor, each communication elements are made in the form of a directional coupler, and the first logic block is made in the form of K-1 elements VALUE, the first and second inputs of the first element OR are connected respectively to the output and the first input of the first 30 UNEMQUENCY, and the output is connected to the first input of the second element NEVER, the first and second inputs of the i-th (i 4, ... , K) of the OR element are connected respectively to the output of the (i-2) -ro element of the UNEQUALABLE first inputs of which are combined and, about 35 SINGLE and (Ј) of the first OR element, the first input of the first logical input is created. - th block, and the element OR, whose inputs connected respectively to the subtracts to the first input of the 1st element NOT EQUALITY, the second input of which is connected to the (1-1) -th additional output of the first logical unit, and the outputs of the K-th element UNEQUALITY connected to the output of the last K-th element OR and the last an additional output of the first logic unit, with the first input of the first element NEGATIMENT and the outputs of all elements NEGATIVE VALUE are the first and subsequent outputs of the second logic unit and the inputs of the display unit, the inputs and cators which are respectively connected to the inputs of the indication unit. the moves of the UNEQUALITY elements, which are the additional outputs of the first logic block, and the output is the output of the first logical i block. 2. The device according to claim 2, wherein the level conversion unit is designed as K comparators, the first inputs of which are combined and form the reference input of the level conversion unit, the second inputs are the inputs of the level conversion unit, and the outputs of the first and second comparative outputs the inputs of the first element OR are connected respectively to the output and the first input of the first element INCREASING, and the output is connected to the first input of the second element UNEMINABLE, the first and second inputs of the i-th (i 4, ... , K) of the OR element are connected respectively to the output of the (i-2) -ro element of the UNEQUAL VALUE and (Ј) of the first element OR, with the output of the 1st element OR of the VALUE and (Ј) of the element OR, with the output of the 1st element OR connecting It is connected to the first input of the 1st element UNEQUALITY, the second input of which is connected to the (1-1) -th additional output of the first logic unit, and the outputs of the K-th element NOT-RATIO connected to the output of the last K-th element OR and the last additional output of the first logic unit, with the first input of the first element INTEGRALITY and the outputs of all the elements UNIMALNESS are the first and subsequent outputs of the second logical unit and the inputs of the display unit, the indicator inputs of which are connected respectively to the inputs of the display unit.