SU936003A1 - Device for collecting,receiving and transmitting information - Google Patents

Description

The invention relates to telemechanics and electrical engineering and can be used in the construction of programmable controllers for relay control and emergency control. ki, as well as debugging tools for these controllers.

A device for receiving information is known comprising a synchronization unit, a driver of control signals, a serial code converter, a control unit for receiving information, a frequency tuning unit, a counter, a trigger, an OR element, and an AND SP element.

However, when each subsequent information is received, the external device has to wait until it is formed by the receiving device, which reduces the rate at which information is received.

Closest to the invention in its technical essence is a device comprising a sampling unit,

multiplexer, correction unit, program control unit, start-up unit. ka a group of analog-to-digital converters, a decoder, a group of analog memory blocks and a group of delay elements, the inputs of the sampling block are the I inputs of the device, the output of the multiplexer is the output of the device, and the inputs of the multiplexer are connected to the first outputs

10 analog-digital converters of the group, the second outputs of which are connected to the inputs of the correction unit, the first output of which is connected to the first input of the start-up unit, and the second

15 output of the correction unit is connected to the input of the program control unit, the input-output of which is the input-output of the device, the first output of the program control unit

20 is connected to the second input of the starting unit, the second output of the program control unit is connected to the input of the decoder, the output of which is connected to the input of the sampling unit. The first inputs of the analog memory blocks. the groups are connected to the output of the sampling unit, the second inputs of the analog group memory blocks and the inputs of the group delay elements are connected to the start blocks, and the outputs of the analog group memory blocks are connected to the first inputs of the corresponding analog-digital converters of the group, the second inputs of which are connected to the outputs correspond to the delay elements of group 2. The disadvantage of this device is that the conversion of analog signals into a code takes place in parallel, thus the number of digital-analog transforms is the call teley equal to the number of information input device. This leads to an increase in size and cost of the device. In addition, an increase in the number of information inputs leads to the correction of all blocks of the device and the introduction of additional analog-to-digital converters. In addition, analog-to-digital converters, having finished converting the current signal, cannot start converting the next signal until the information is removed from the output of the device. The latter circumstance leads to a decrease in the speed of information gathering. The purpose of the invention is to simplify the device, increasing its speed. This goal is achieved by the fact that in a device for collecting, receiving and transmitting information containing a sampling unit, the input of which is connected to the first input of the device, the output of the sampling unit is connected to the input of the memory unit, the analog-to-digital converter, the first you: the first input of the control unit, the second input of which is connected to the second input of the device, the start-up unit and the switch, the counter is entered and the buffer register the output of the memory block is connected to the first input

Claims (2)

KOMMyTafopa, the output of which is connected to the first input of the analog-digital converter, the second output of which is connected to the first input of the buffer register, the first and second outputs of the control unit are connected to the second, input of the analog-digital converter, respectively, through the first output of the device that the information is prepared for issue. In addition, unit 5 generates a counting pulse, which is fed to the input of counter 7, the code signal from the output of counter 7 is fed to the second input of switch 3 and the initiating INPUT of the counter, the output of which is connected to the second input of the switch and the first input of the trigger, the second input of which is connected with the third input of the device, the first, second and third outputs of the start-up unit are connected respectively with the combined second input of the sampling unit and the third input of the switch, the second input of the counter and the third input of the control unit, third The output of the control unit is connected to the first output of the device and the second input of the buffer register, the output of which is connected to the second output of the device. The drawing shows a structural diagram of the proposed device. The device contains a sampling block 1, a memory block 2, a commutator (multiplexer) 3, an analog-to-digital converter (A / D converter) A, a control block 5, a start block 6, a counter 7, a buffer register 8. The device operates as follows. An external device, on the third input, sends a data request signal. This signal enters block 6, and information from all sources from the first input simultaneously through block 1 enters the cells of memory block 2, where it is stored. The memorization time is monitored by block 6, after which the inputs of block 2 are rejected. Block 6 also initiates the operation of switch 3. The latter, as soon as the information is remembered in block 2, transmits it from the first cell to the input of ADC 4. Control unit 5, while receiving the trigger signal from the third output of block 6, generates an ADC trigger signal 4. When the ADC 4 finishes the conversion, it signals this block 5. The control block 5 at the same time generates a signal which, arriving at the input of the buffer register 8, translates information from the ADC 4 into this register and simultaneously signals its operation so that it connects to the ADC input 4 in The output of the second cell of block 2. The control block 5 at the same time generates the start signal of the A / D converter 4 and it begins to transform the signal of the second cell of block 2; it marks the end of the conversion with a signal that goes to the input of block 5. If by this time the external device receives information from output of the buffer register 8, it signals this block 5 through the second input of the device, and then block 5 again generates a signal, transferring information from the ADC 1 to the register 8 simultaneously informing the external device through the first output that the data not ready for reception. The cycles are repeated until the information from the last cell of the block is transmitted to the ADC 4. 2. In this case, the code (the 5th signal from the output of counter 7 notifies start block 6 that the last cell of block 2 is polled. Therefore, block 6 generates a signal, counter 7 is set and the signal that triggers operation of block 1 and switch 3, and the device operation is repeated. The proposed device, firstly, is significantly simpler in design, since regardless of the number of information sources, only one ADC is used, secondly, the functionality expands, as with the increase in the number of information sources in the launcher e Thirdly, the speed of the device increases, since the analog-to-digital converter ADC operates continuously, saving the previous information in the buffer register. The proposed device is used in the interface of programmable controllers of relay protection, which gives a significant economic effect, since The most expensive units of the device are analog-digital converters, the number of which in a known device is equal to the number of sources of information. 3 and in the proposed - brought to one. . An apparatus for collecting, receiving and transmitting information comprising a sampling unit whose input is connected to the first input of the device, an output of the sampling unit is connected to the input of the memory unit, an analog-to-digital converter, the first output of which is connected to the first input of the control unit, the second input which is connected to the second input of the device, the start-up unit and the switch, characterized in that, in order to simplify the device and increase its speed, a counter and a buffer register are entered into the device. The first input of the switch, the output of which is connected to the first input of the analog-digital converter, the second output of which is connected to the first input of the buffer register, the first and second outputs of the control unit are connected respectively to the second input of the analog-digital converter, the output of which is connected to the second input of the switch and the first input of the starting block, the second input of which is connected to the third input of the device, the first, second and third outputs of the starting block are connected respectively to The second output of the control unit is connected to the first output of the device and the second input of the buffer register, the output of which is connected to the second output of the device, with the second input of the sampling unit and the third input of the switch, the second input of the counter and the third input of the control unit. Sources of information taken into account in the examination 1. USSR author's certificate number 734662, cl. G06 F 3/04, 1978. 2, USSR Copyright Certificate No. 734659, cl. G 06 F 3 / D4, 1978 (prototype). I It P/ 4ca Cx