SU1573560A1 - Device for interrogation of information transducers - Google Patents

Abstract

The invention relates to radio engineering, in particular, to systems for automatically interrogating information sensors in the on-line processing of telemetric information. The aim of the invention is to simplify the device. The device contains a generator 1, polling nodes 2.1-2.p., each of which contains the first and second elements AND 3.4, the unit 5 for recording information processing time, trigger 6, information sensor 7, switching element 8, and also element OR 9, first and second standby multivibrator 10.11, key 12, cyclic trigger 13, link 14. The goal is achieved by the specific execution of polling nodes 2 and connecting the output of the second multivibrator 11 to the set input of cyclic trigger 13. 2 Il.

Description

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The invention relates to radio engineering and technical equipment, namely to systems for automatic interrogation of information sensors in the operational processing of thermal information.

The aim of the invention is to simplify the device.

Figure 1 shows a block diagram of a device for polling information sensors; FIG. 2 shows the execution of an information processing time accounting unit and an information sensor.

The device contains a generator of 1 clock pulses, nodes 2-1-2-p survey, each of which contains the first 3 and second elements And, block 5 accounting for information processing time. Trigger 6, information sensor 7, Switching element 8, as well as the element OR 9, the first 10 and the second 11 dush multivibrators ,; key 12, cyclic trigger S3 and link 14

The unit 5 takes into account the processing time of the information, contains a counter 15, a first coincidence element 16 and a lock trigger 17.

Information sensor 7, Eegistr 18, fixer 19 Pzm Nenit information, convert: ezagel 20 ardelny code to serial, valve 21, second element-1 22 matches and trigger controls / 3,

Wu (trio worked as follows.

In the initial state, when none of the information sensors 7 have any information and a survey is not performed, the triggers 6 of all nodes 2 polls

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the element OR 9 and the public key I2 to the input of the first standby multivibrator 10, which generates a pulse arriving in the communication line 14. This pulse is the starting one and determines the time (moment) of the start of the polling of the information sensor 7. At the end of the pulse, the second standby multivibrator 11 starts at the output of the first waiting multivibrator 10, the pulse from the output of which triggers the 6 triggers of all nodes 2 polling to that state, where the first elements And 3 do not pass the signals coming from the generator, and the second elements And 4 pass. At the same time, the same signal is transferred to the cyclic trigger 13, the signal from the output of which closes key 12, which prevents transmission of the output pulse to the communication link 14 and resetting the trigger until the end of the full polling cycle in the event of a change in the state of the OTHER DETCHER 7 . The signals from the output of the second element 1 4 of the first interrogation unit nodes receive a btek 5 ". At the same time, the switching element i 8 from the output of block 5 receives a pulse, the duration of which determines the time during which this element is open and the information signals from the third the output of the blog 5 is read from the information sensor 7 and enters the communication line 14. At the end of the specified time (pulse), a signal appears at the second output of block 5, which enters the input of trigger b of the first node 2.1

are in such a state that the Q-section of the survey. Trigger 6 overturns

the decisive signals from neither arrive at the inputs of the first elements AND 3 and do not arrive at the inputs of the second elements AND 4 As a result, the first elements AND 3 of all nodes 2 of the interrogation pass pulses coming from generator 1, g the second elements AND 4 do not pass i, therefore, pulses not received at the inputs of the block 5. The signals at the output of block 5 are missing, the switching elements 8 are closed. The cyclic trigger 13 pulses from generator 1 is set to the zero state, there is no signal at its output and key 2 is open.

When the state of the information sensor 7 of any polling node 2 changes, a signal appears at its second output. This signal comes through

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as a result, the signal from the input of the second element AND 4 is removed and appears at the input of the first element AND 3, the pulses from the generator 1 through the first element AND 3 of the first polling node 2.1 arrive at the inputs of the elements And the next polling node 2, whose operation is similar to that described.

After polling all information sensors 7 from the output of the first element And 3 of the last polling node 2.p, the signal arrives at the cyclic trigger 13, which overturns, the signal at its output disappears, key 12 opens and the device returns to its initial state.

The operation of block 5 and information sensor 7 is carried out as follows.

When the state of register 18 changes, signal 1 appears at the output of latch 19. Signal 1 is recorded in the first bit of the distributor 21 and re-circuits a control trigger 23, the signal from the output of which goes to the OR 9 element, signaling a change in state. The signals supplied to the distributor 21 from the coincidence element 16 ensure the operation of the converter 20 and the reading of information on the communication line 14.

Claims (1)

Invention Formula A device for polling information sensors, comprising a clock pulse generator, polling nodes, an OR element, a serially connected key, first and second waiting multivibrators, an OR element, a cyclic trigger whose output is connected to the first key input, a communication line, each polling node contains consistently connected block of time processing of information, the first output of which is connected to the first input of the information sensor, and the trigger, the first and second elements And, the switching element, the first and second in ode which are respectively connected to the first output invariant ormatsionnogo sensor 10 and second vyho 15 573560 the house of the information processing time accounting block, and the first and second outputs of the trigger are connected respectively to the first inputs of the first and second elements AND, the second inputs of which are connected to the output of the clock generator in the first interrogation node, and in the second and subsequent interrogation nodes - with the output of the first element And the previous polling node, with the output of the first element And the last polling node connected to the reset input of the cyclic trigger, and the output of the second element AND of each polling node connected to the input of the corresponding time metering unit No information processing, the outputs of the switching elements are connected to the communication line connected to the input of the second multivibrator, the output of which is connected to the second inputs of the polling node triggers, characterized in that, in order to simplify the device, the output of the second multivibrator is connected to the installation input cyclic trigger, and the second key input is connected to the output of the OR element, whose inputs are connected to the second information sensor outputs of each polling node, the second inputs of which are connected to the remote control their third outputs accounting information processing time blocks. 20 25 thirty