RU1789401C - Train speed automatic control device - Google Patents

Abstract

Usage: in automation, in automation devices of the transportation process in railway transport. The inventive device includes a unit 1 for measuring the actual speed, unit 2 for measuring acceleration, unit 3 for measuring the distance traveled over the unit, unit 4 for storing lengths for unit sections, unit 5 for program braking, two comparing elements 6. 7, input 9 initial setting, state, input 10 determining the direction of movement, information input 11. 3 ill.,.

Description

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The invention relates to automation and can be used in devices for automating the transportation process in rail transport

The purpose of the invention is to improve the quality of control.

Figure 1 presents the functional diagram of the device; Fig. 2 is a functional diagram of an actual speed measuring unit; in Fig. 3 is a functional block diagram of the pa t - in block sections.

f, Qir | ot r.1) contains (block 1 yzmerenie $ | Ktiche1 ||| 9th speed, block 2 measured., ye & reni, block 3 measure the distance traveled along the block section, block 4 memory length block sections, software braking unit 5, first 6 and second 7 comparing elements, actuating unit 8, the first input of software braking unit 5 is connected to the output of the actual speed measuring unit 1 connected to the input of the acceleration measuring unit 2, the output of which is connected to the first input the first 6 elements of comparison, and with the first input of block 3 measuring the distance traveled by block learning a run, the second input of which is connected to the output of the second 7 element, and the output is connected to the second input of the block .5 software braking and the first input of the second 7 comparison element, the second input of which is connected to the output of the block 4 of memory lengths of block sections and the third input of the software braking unit 5, the output of which is connected to the second input of the first 6 comparison element, the output of which is connected to the executive unit 8, the fourth input of the software braking unit is connected to the information input 11 of the device, the first and second inputs of the unit 4 Single lengths memory block portions connected respectively to the inlet 9 to the initial setting state and input 10 for determining the direction of movement, and a third input of the block lengths of the four memory block sections connected to the output of the second comparing element 7.

The actual speed measuring unit 1 (Fig. 2) comprises in series a speed sensor 12 and an actual speed measuring circuit 13.

Block 4 of memory lengths of block sections (Fig. 3) contains a block 14 for initial installation and addressing, the output of which is connected to memory elements 16, the outputs of which are the output of block 4, input 15 of block 14 is the third input of block 4 memory of block lengths.

The device operates as follows.

Information on the permissible speed of the train at the end of the block section, which is received, is decoded (in Fig. The corresponding blocks are not shown) and in the communication channel of the automatic locomotive signaling from the train route.

in the form of a binary code is fed to the information input 11 of the block 5 software, braking. In addition, the train has a speed sensor 12, the pulses from the output of which are fed to the measurement circuit 13

speed. The value of the measured speed, presented in the form of a parallel binary code, is supplied from the output of block 1, respectively, to block 2 for measuring acceleration, block 3, for measuring the distance traveled

on the block site and block 5 software braking.

The acceleration measuring unit 2 differentiates in time the speed of the train and thereby provides a measurement

acceleration. The measured acceleration is represented as a binary code.

The unit 3 for measuring the distance traveled in the block-section integrates the speed of the train for a given period of time and thereby provides a measurement of the distance traveled. In block 7, a continuous comparison is made of the distance traveled with the length of the block section over which

the train is currently moving. Therein

if the difference ley - / V dt Ј, where | preset small value, then at the output of block 7 comparison appears a signal that

resets the measuring unit 3 of the traveled path and switches the addressing unit 14 to the next state at the input 15, the address corresponding to the length of the next one is changed at the address inputs of the block 16

0 of the train movement of the block, the binary code of which is stored in the memory cells of block 16.

The length of the block section and the current value of the coordinate of the train are supplied in the form of a double 5 wo code to block 5 of software braking. Block 5 may implement various algorithms for calculating a given acceleration, for example,

Q

ass

VK-V2 2 (Sk -3)

where Vk is the permissible speed of the train at the end of the block section coming from the communication channel to input 11;

V is the current speed value measured by block 2;

Sk is the length of the block portion on which the train is located;

S is the current value of the distance traveled.

The value of the specified acceleration calculated in block 5 is compared with the measured value of acceleration using block 6, which performs the function D QI Ozad - OFF I and the OUTPUT signal of which is supplied to the executive unit 8. Depending on the value of the mismatch before, the executive unit 8 Complete the following. If the set deceleration value in absolute value is greater than the actual one, then braking of the composition must be ensured. If the set deceleration value in absolute value is less than the actual value, then braking is not performed.

If a permissible speed not only on a given block section, but also on the next is transmitted to the train through the automatic locomotive signaling channel, then the specified acceleration is calculated by the allowable speed of the train at the end of the next block section, a Sk is defined as the sum this and the next block sections. In this case, an additional device for summing the lengths of block sections is not required, and only the contents of block A of the length memory of block sections are changed, in each cell of which in this case the sum of the lengths of two block sections is recorded.

The input 9 of the device is intended to set the addressing unit 14 to its initial state when the train leaves the depot for this line. The initial installation signal is generated on the way at the beginning of the first block section and ensures that the block 14 is set to zero, as a result of which the length value of the first block section on this line is selected from block 1 b.

The input signal at input 10 provides the direction of movement of the composition in LiFig. 2

nii (can be set by the driver, or automatically transferred from the path). This signal is necessary to ensure the correct selection of the length of the block portion from block 16 when the train moves in the even and odd directions.

Claims (1)

SUMMARY OF THE INVENTION A device for automatically controlling the speed of a train, comprising an actual speed measuring unit, the output of which is connected to an input of an acceleration measuring unit, comparators, a unit for measuring the distance traveled along a block, and an execution unit, characterized in that in order to improve the quality of control, it is equipped with a block length memory unit and software braking unit, the first input of which is connected to the output of the actual speed measuring unit, connected to the acceleration measurement input, the output of which is connected to the first input of the first comparison element, and to the first the input of the unit for measuring the distance traveled along the block, the second input of which is connected to the output of the second comparison element, and the output to the second input of the software braking unit and the first input of the second comparison element , the second input of which is connected to the output of the memory block of the length of the block sections and the third input of the software braking unit, the output of which is connected to the second input of the first comparison element, the output of which is connected to the executive unit, the fourth input of the software braking unit is formed an information input, and the first and the second inputs of the block of memory lengths of block sections are formed respectively the input of the installation in the initial state and the input of determining the direction of movement, and the third input of the block of memory lengths of block sections is connected to the output home of the second element of comparison. Fig.Z