RU2652467C1 - Angle information converter - Google Patents

Abstract

FIELD: calculating; counting.

SUBSTANCE: invention relates to exchange interface adapter units, its control and processing. Angle information converter comprises: microcontroller (MC), transceiver interface RS-485/RS-422, the main data bus, bus address of the subscriber, input and output buffer registers, according to the invention, two transceivers M2 with transformer galvanic isolation (PM2), multiplexed channel adapter (MCA) and interrupt driver (ID) are introduced, while the inputs and outputs of the PM2 form the inputs and outputs of the device's M2 interface, the input/output of the RS-485/RS-422 transceiver is connected to the subscriber's data line of the device, MCA input is connected to the subscriber address bus, the outputs are connected to the corresponding inputs of the buffer registers, and the inputs and outputs are connected to the corresponding inputs and outputs of the PM2, the inputs and outputs of the main data bus are connected to the corresponding MCA inputs and outputs, input and output buffer registers, the inputs of the ID are connected to the corresponding outputs of the MCA; MC input-output is connected to the corresponding inputs and outputs of the main data bus and RS-485/RS-422 transceiver, inputs are connected to USB converter port, ID outputs, MCA output and input are connected to data bus for programming, and outputs are connected to inputs of the subscriber of the device and inputs of the input and output buffer registers, output is connected to a data bus for controlling the cyclogram of exchange with specialized devices.

EFFECT: technical result is the expansion of the functionality of the converter, which allows direct and reverse transformation of the interface.

1 cl, 1 dwg

Description

The invention relates to the field of digital computing, and in particular to devices for interfacing interfaces for the exchange of information, its control and processing.

The prior art is an analogue of the proposed technical solution "Interface with the main digital channel" (certificate for utility model RU 50693 U1), which is adopted as a prototype.

The interface device with the main digital channel contains an adapter node to the RS-232 port, an AT89S53 microcontroller, a programmable logic integrated circuit (FPGA) that implements a data bus, address bus, display register, speed register, main digital channel transfer register (BCC), register received BCC data, register of transmitted bi-pulse channel (BI) data, register of received bi-pulse channel data, BCC encoder, BCC decoder, start-stop pulse insertion circuit, start-stop pulse cut-out circuit, sk tuning circuit grow transmission channel, the reception channel speed setting circuit, and the LED status indicator device, analog transceivers biimpulsny node, loop port with BCC, circuit connection biimpulsnym channel.

The interface device with the main digital channel is designed for direct and reverse conversion of BCC signals to the C1-I interface, BCC to the RS-232 interface, as well as mutual conversion of RS-232 and C1-I interfaces.

The device provides the following exchange rates:

- on the RS-232 interface - 57.6, 38.4, 19.2 and 9.6 kbps;

- on the C1-I interface - 64, 48, 32, 16, 9.6, 4.8, 2.4 kbit / s;

- according to BCC (G703) - 64 kbit / s in anti-directional and codirectional modes.

The operating mode is determined by the position of the master microswitches or by the settings of the application software.

The disadvantages of this prototype are its small functionality that does not allow the conversion and exchange of information on channels with the most promising and faster data transfer interfaces, as well as the lack of the possibility of intermediate processing, data control and the formation of messages in a digital channel about the information inaccuracy (in the form of a specific code for violations in exchange). In addition, the prototype is made on imported components.

The objective of the proposed technical solution is to expand the functionality - not only the direct and reverse conversion of the M2 interface of the pulp and paper mill (both the most promising interface, both in terms of hardware costs and reliability) into the interfaces of RS-485 / RS-422, USB subscribers (SPIs are also possible , 12C), but also intermediate data processing, control of the correctness of the exchange and reliability of data, the formation of messages in a digital channel about the inaccuracy of information (in the form of a specific code for violations in the exchange). In addition, the angular information converter must be performed, unlike the prototype, on a modern domestic element base using LSI.

The claimed technical result is achieved by the fact that in the angle information converter comprising: a microcontroller (MK), an RS-485 / RS-422 interface transceiver, a main data bus, a subscriber address bus, input and output buffer registers, according to the invention, two M2 interface transceivers are introduced with transformer galvanic isolation (PM2), multiplex channel adapter (AMC) and interrupt driver (FP), while the inputs and outputs of the GGM2 form the inputs and outputs of the device’s M2 interface, the input-output of the transceiver RS-485 / RS-422 is connected to the subscriber data line of the device, the AMC input is connected to the subscriber address bus, the outputs are connected to the corresponding inputs of the buffer registers, and the inputs and outputs are connected to the corresponding inputs and outputs of the PM2, the inputs and outputs of the main data bus are connected with the corresponding inputs and outputs of the AMC, input and output buffer registers, the inputs of the FP are connected to the corresponding outputs of the AMC; MK inputs and outputs are connected to the corresponding inputs and outputs of the main data bus and RS-485 / RS-422 interface transceiver, inputs - with the USB port of the converter, FP outputs, AMC output and input - with the data bus for programming, and outputs - with inputs the subscriber’s device and the inputs of the input and output buffer registers, as well as the output — with a data bus for controlling and generating exchange diagrams.

In FIG. 1 is a structural diagram of a device for converting angular information. A secondary power source (DC / DC) (1) is used to power the device.

The angular information converter contains: PM2 on the main (OK) and backup (RK) channels (2.1 and 2.2), a transceiver on RS-485 / RS-422 interfaces (3), a multiplex channel adapter (4) that implements the function of receiving a serial interface code M2, its conversion to parallel digital code and its inverse conversion during data transmission, the main data bus (5), input and output buffer registers (6.1 and 6.2), interrupt driver (7), microcontroller (8), subscriber address bus (9 ), data bus for programming (10), data bus for control niya (11), communication chains: with CVC, with PC, with TLS.

The angle information converter is designed to interface subscriber interfaces - angular velocity sensors (RS) (RS-485 / RS-422) to the M2 interface of the CVC, the USB PC interface to the M2 interface of the CVC, the forward and reverse signals into a parallel 8-bit digital code, and also to control the reliability of the information received from the CRS and to generate messages with violations in the exchange of messages with a sign of data inaccuracy.

The device provides the following exchange rates:

- via RS-485 / RS-422 interfaces - from 9600 to 460800 bit / s;

- via USB - 1.5 Mbps, 12 Mbps;

- on the M2 interface from the side of the CVC - 1 Mbps.

The exchange rate on the RS-485 / RS-422, USB interfaces can be set:

- software when flashing ROM programs MK;

- by reprogramming the ROM of the programs in the device;

- via the USB PC interface, the task of the exchange speed of the remote control system.

Initialization of the device’s operation is carried out by issuing a control word (KC1) with a data word (CD1) from the CVC via the M2 OK or M2 RK interface, provided that the subscriber’s address (4 ... 8) p KS1 matches the subscriber’s address set on the subscriber’s address bus (first AMC input), through the external connector of the device.

KC1 with the data word (GOST F1) is sent to PM2 OK, which converts the phase-shifted code M2 into a bipolar code supplied to the input of the AMC, which in turn converts information from a serial bipolar code at the input to a parallel digital code at the output. Switching to exchange in the Republic of Kazakhstan is carried out by the CVC in case of any violation of the exchange protocol in the M2 OK interface according to GOST.

The WRA signal (recording), which is also generated by the AMC at the first output, records CD1 from the AMC into the input buffer register. The CS control signals (read), “receive / transmit” (exchange direction), and the subaddress code (received by KC1) generated by the AMC on the second, third, and fourth outputs are transmitted to the first, second, and third FP inputs, which, based on their The analysis generates and issues the INTO interrupt signal to the MC. The CS signal is also transmitted to the first input of the output buffer register. The code combination of SD1 determines one of the following operating modes of the device:

- interrogation of angular information from the CRS and its transmission to the CEC;

- setting the technical characteristics of the CRS (through the second input-output of the RS-485 / RS-422 interface transceiver, for polling the instantaneous or average angular velocity, polling frequency, exchange format);

- selection of constants for calculating the checksum of the information received from various types of TLS and the corresponding exchange sequence diagram.

MK on the interrupt signal INTO analyzes:

- subaddress code and switches to the corresponding subroutine of the formation of the cyclogram of exchange with the DOS;

- a data word (СД1), which is supplied to the first input-output of the MC through the main data bus from the input buffer register by the EZM signal received in the input buffer register from the MC, and determines the corresponding constants for calculating the checksum of the information received from the CRS.

According to the synchronization pulse, the MCS DUS captures the current value of the angular information (speed) and transmits it via the data line to the input of the RS-485 / RS-422 interface transceiver, from the output of which the data is received by the MC in the FIFO type receive buffer, checks the accuracy of the information received from the subscriber the angular velocity by calculating the checksum of the received data and comparing it with the checksum that accompanies the information, in case of violation of the rules for exchanging with the remote control system, the device generates and transmits to the CVC a constant in the form of a 7FFF code (as an indication is unreliable minute data) in all three axes TLS, when the correctness of the information exchange reception FIFO type buffer in the RAM is rewritten for MK its subsequent transfer to the CIC. To prepare for the polling of angular information from the CVC via the M2 interface, the MK generates and transmits the WRM signal to the output buffer register and transcribes the first two bytes of data through the first input-output to the output buffer register.

The angular information is polled according to KS2 (GOST F2), received from the CVC through PM2 OK to the AMK input.

According to KS2, the subaddress code and control signals CS (read), “receive / transmit” (exchange direction) generated by the AMC, to the interrupt driver, which, based on their analysis, generates and issues INT1 interrupt signals to the MC. The number of interrupt signals INT1 is determined by the data format (bit capacity) of the data array according to the angular velocity of the TLS.

According to the first INT1 signal, data (16p) previously prepared for transmission from the output buffer register is written to the AMK buffer register through the main data bus and transmitted through the PM2 OK or PM2 RC through the M2 OK or M2 RC interface to the CVC, then at the end of this signal INT1 MK reads the following 16p data from internal RAM and writes it to the output buffer register.

According to the second signal and subsequent to the sixth INT1, the exchange procedure is similar to the first INT1.

According to the sixth signal INT1 (after the transfer of SD6 via the M2 interface), the MK rewrites the first two bytes of the DOS data from RAM to the output buffer register. The need for this operation is provided for the possibility of re-polling the angular information of the TLS (in the case where the exchange protocol for OK interface M2 is recognized by the CVC as not compliant with GOST, the survey is repeated for the Republic of Kazakhstan).

The MK provides for docking with a PC via the USB interface, which allows during testing tests to set the exchange rate corresponding to the RS-485 / RS-422 interface through the second input-output of the interface transceiver; DOS operation mode (synchronous, asynchronous); the output information (average speed, instantaneous speed, acceleration), as well as the possibility is realized using a PC via the USB port to form on the data bus to control the exchange pattern.

For the possibility of making changes to the firmware of the ROM ROM MK, which determines the cyclograms of the device’s exchange in the CVC, a data bus for programming is organized at the input of the device for control signals and data coming from an external programmer.

Thus, the angular information converter is claimed containing MK, RS-485 / RS-422 interface transceiver, main data bus, subscriber address bus, input and output buffer registers. A distinctive feature is that two M2 interface transceivers with transformer galvanic isolation (PM2), a multiplex channel adapter (AMC) and an interrupt driver (FP) are introduced, while the first inputs and outputs of PM2 form the inputs and outputs of the M2 converter interface, the first input - the output of the RS-485 / RS-422 interface transceiver is connected to the subscriber’s data line of the converter, the AMC is connected to the subscriber’s address bus by the first input, and connected to the second I / O, respectively, by the first and second inputs / outputs MI PM2, the first output - with the first input of the input buffer register; the first input-output of the main data bus is connected to the third input-output of the AMC, and the second input-output is connected to the first inputs and outputs of the input and output buffer registers; the first, second and third FP inputs are connected respectively to the second, third and fourth outputs of the AMC; the first input-output of the FP is connected to the second input-output of the input buffer register, the first input of the output buffer register is connected to the second output of the AMC; MK the first input-output is connected to the third input-output of the main data bus, the first input - with the USB port of the converter, the second input-output - with the second input-output of the RS-485 / RS-422 interface transceiver, the first output - with the input of the converter , the second output - with the second input of the input buffer register, the second input - with the fourth output of the AMC, the third and fourth inputs - with the first and second outputs of the FP, the third output - with the second input of the output buffer register, the fourth output - with a data bus for control and for cyclograms of exchange, the fifth input - with a data bus for programming.

The technical result is to expand the functionality of the converter, allowing not only direct and inverse transformation of the interface, but also intermediate data processing, as well as monitoring the accuracy of the exchange and reliability of data, forming a message in a digital channel about the information inaccuracy.

Claims (1)

An angular information converter containing a microcontroller (MK), an RS-485 / RS-422 interface transceiver, a main data bus, a subscriber address bus, input and output buffer registers, characterized in that two M2 interface transceivers with transformer galvanic isolation (PM2) are introduced , the multiplex channel adapter (AMC) and the interrupt driver (FP), while the first inputs and outputs PM2 form the inputs and outputs of the M2 converter interface, the first input-output of the RS-485 / RS-422 interface transceiver is connected to the data line nent converter AMC first input coupled to the local bus address, and first and second inputs-outputs connected respectively to second inputs-outputs PM2, the first output - to the first input of the input buffer register; the first input-output of the main data bus is connected to the third input-output of the AMC, and the second input-output is connected to the first inputs and outputs of the input and output buffer registers; the first, second and third FP inputs are connected respectively to the second, third and fourth outputs of the AMC; the first input-output of the FP is connected to the second input-output of the input buffer register, the first input of the output buffer register is connected to the second output of the AMC; MK the first input-output is connected to the third input-output of the main data bus, the first input - with the USB port of the converter, the second input-output - with the second input-output of the RS-485 / RS-422 interface transceiver, the first output - with the input of the converter , the second output - with the second input of the input buffer register, the second input - with the fourth output of the AMC, the third and fourth inputs - with the first and second outputs of the FP, the third output - with the second input of the output buffer register, the fourth output - with a data bus for control and for cyclograms of exchange, the fifth input - with a data bus for programming.

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