RU51948U1 - ELECTRIC TRUCK CONTROL UNIT - Google Patents

Abstract

The utility model is intended for use in a motion control system of an electric locomotive, namely, to control the traction of an electric locomotive. The technical result to which this utility model is directed is to simplify the design of the traction control unit without compromising the reliability of the unit scheme. Traction control unit, contains interconnected boards. Input circuits are located on the first board, including solid-state relays, which are optocoupler pairs. On the second board there is a microcontroller designed for digital processing of incoming signals and the issuance of traction control signals. On the first board there is a parity chip connected through the first and second transistor switches to an LED and a reed relay, respectively, designed to provide signals to the locomotive auto-drive system. The leads of the optocoupler LEDs are designed to connect to the conclusions of the signal processing circuit of the positions of the handle of the controller of the driver, as well as the contacts of the shunt control buttons and the traction analysis. The second inputs of the microcontroller are designed to connect to the ports of the central computer.

Description

The utility model is intended for use in railway transport in a control system for the movement of an electric locomotive, namely for controlling the traction of an electric locomotive.

The closest analogue of the claimed utility model is an electric locomotive traction control unit containing interconnected boards installed on the chassis, on one of which input circuits are located, including solid-state relays, which are optocouplers connected to the first inputs of the microcontroller located on the second circuit board, intended for digital processing of incoming signals and issuing through a bus driver of traction control signals (China, Patent No. 1586958). This known device has a complex circuit with duplication of elements located on the first and third boards, and using the CAN interface to transmit signals between the boards of the block. However, provided that the rest of the locomotive equipment equipped with the necessary protective equipment is used, the use of this known scheme will lead to unjustified complication of the locomotive equipment as a whole, which will lead to a decrease in the reliability of the equipment.

The technical result to which this utility model is directed is to simplify the design of the traction control unit without compromising the reliability of the unit scheme.

The technical result is achieved by the fact that the electric locomotive traction control unit, comprising interconnected boards installed in the housing, on one of which input circuits are located, including solid-state relays, which are optocouplers connected to the first inputs located on

the second circuit board of the microcontroller, designed for digital processing of the received signals and issuing the traction control signals through the bus driver, is equipped with a parity chip located on the first board, the input of which is connected through the bus driver to the output of the microcontroller, and the output through the first and second transistor switches, respectively, to the LED - an indicator for issuing commands in the control system and a reed relay intended for issuing signals to the locomotive's auto-driving system, while the LED outputs rows optocouplers are intended for connection to the terminals the signal processing circuit positions the handle driver controller, and contacts shunts controls and parsing traction second inputs of the microcontroller are designed to connect to a central computer ports.

Figure 1 presents the structural diagram of the traction control unit.

The traction control unit contains interconnected boards 1 and 2. On the first board 1, input circuits are located, including solid-state relays, which are optocoupler pairs 3. On the second board 2, there is a microcontroller 4 designed for digital processing of the received signals and outputting via bus driver 5 traction control signals. The first inputs of the microcontroller 4 are connected to the outputs of the solid-state optical relay 3. On the first board 1 is also located the chip 6 parity. The input of the microcircuit 6 is connected through the aforementioned bus driver 5 to the output of the microcontroller 4, and the output to the first and second transistor keys 7 and 8. The key 7 is connected to the LED, and the key 8 is connected to the reed relay 9, which is used to issue signals to the auto-drive system of the electric locomotive . The outputs of the LEDs of the optocoupler pairs 3 are intended for connection to the terminals of the signal processing circuit of the controller handle positions

the driver, as well as the contacts of the buttons for managing shunts and parsing traction. The second inputs of the microcontroller 4 are designed to connect to the ports of the central computer.

The electric locomotive traction control unit is designed to process the input signals of transistor-transistor logic levels (“TTL” levels) received from the calculator ports about the presence of shunts entered in the power supply circuit of the electric locomotive engines, “TTL” levels of traction control signals from the handle of the driver controller (“+1” -the command to add one traction position; “-1” - the command to reset one traction position; “+ A” - the command to automatically set the traction positions to the nearest running position; “-A - the command to automatically reset the traction positions to the nearest the best running position), signals of the “dry contact” type from the control buttons for introducing shunts and traction analysis (“0” is the traction analysis command; “+ Ш” is the command to enter the next shunt into the power circuit of the motors; “-Sh” is the command to output from power supply circuits for motors of one shunt), the formation of control signals of a high TTL level normalized by the duration, their transmission to the control system of an electric locomotive, the generation of a generalized signal to an indicator about issuing commands to a control system and issuing a dry contact signal to the auto-driving system for communicate it to intervene in the driver's control.

The block works as follows.

The signals from the handle of the driver’s controller, buttons for managing shunts and traction analysis are fed to the input circuits (which are optocouplers) of solid-state relays — optocouplers 3, the outputs of which form low-level TTL signals that enter the inputs of microcontroller 4 on board 2 (US-1M ), which carries out digital processing of the received signals in accordance with a predetermined algorithm that provides protection against contact bounce and the presence of

pressing more than one button. The signals from the central calculator about the number of shunts introduced in the power supply circuit of the electric locomotive engines go to the inputs of the microcontroller 4 in transit through the board 2 (IKU-2). The output signal to the microprocessor control system of the electric locomotive is carried out in accordance with the agreed algorithm for the formation and transmission of control commands. At the same time, at the output of the microcontroller 4, a low level signal is formed on the US-1M board, which is fed to the inverting bus driver 5, which provides the required load capacity of the output stage for coordination with the receiving equipment.

To visualize the issuance of control signals to the electric locomotive control system, a cascade of signal generation to the LED is provided. The signals from the output of the bus driver 5 issuing commands to the control system of an electric locomotive are distributed in parallel to both the output connector and the inputs of the parity control chip 6 on the IKU-2 board. When a control signal is issued to the control system of the electric locomotive, an output signal pulse is generated on the IKU-2 circuit board at the output of the parity control chip 6, repeating the command for the control system in duration. The output of the microcircuit 6 controls the transistor switch 7, which forms the LED enable circuit, signaling the issuance of commands to the locomotive control system. The same signal from the output of the chip 6 parity controls through another transistor switch 8 reed relays 9, which provide signals of the type of "dry contact" in the automatic system of the locomotive, informing her that the driver intervened in the control of the electric locomotive.

Claims (1)

An electric locomotive traction control unit containing interconnected boards installed on the chassis, on one of which input circuits are located, including solid-state relays, which are optocouplers connected to the first inputs of the microcontroller located on the second circuit board, designed for digital processing of incoming signals and the issuance of traction control signals through a bus driver, characterized in that it is equipped with a parity chip located on the first board, the input of which is connected n through the aforementioned bus driver to the output of the microcontroller, and the output through the first and second transistor switches, respectively, to the LED and the reed relay, designed to provide signals to the locomotive auto-drive system, while the leads of the optocoupler LEDs are designed to connect to the terminals of the signal processing circuit of the controller handle positions the driver, as well as the contacts of the shunt control and traction analysis buttons, the second inputs of the microcontroller are designed to connect to the ports of the central computer.