SU1689174A1 - Device for reading the number of transport vehicle - Google Patents

Abstract

The invention relates to railway automation and can be used to identify vehicle numbers. OBJECTIVE OF THE INVENTION C 24 2 increase confidence. The device contains infrared transmitters 3.1-3.4 installed at the test point, optical receivers 4.1-4.4, memory block 7, decoder 17. The information carrier 24 is located on the vehicle. Improving the reliability of the device is provided by the ability to synchronize the recording of the identifiable number of the vehicle and the ability of the device to operate in the recording mode and read the information about the vehicle number in the memory block 7 by the addresses generated by the counter 21, which is reversible. 1 il.

Description

The invention relates to railway automation and can be used for automatic recognition of 'numbers of transport units and determination of their guiding movements, for example, 5 railway cars passing a checkpoint.

The purpose of the invention is to increase reliability.

In the drawing, a functional diagram of the device appears on the 10th.

The device contains 1 and 2 pulse generators located at the control point, infrared transmitters 3.1-3.4 connected to the generator 1. 15 Optical receivers 4.1-4.4, outputs connected through the shapers 5.1-

5.4 pulses to blocks 6.1-6.4 matches, block? memory, elements 8-10 OR, elements 11-16 AND, decoder 1'7, triggers 18-20, 20 counters 21 and 22, inverter 23 and storage medium 24 located on the vehicle.

Blocks 6.1-6.3 outputs connected to the decoder 17, the outputs of the decoder 17 25 connected to the inputs! data block 7 memory.

The outputs of the memory unit 7 Write and Read are connected to the outputs of the trigger 20. The address inputs of the unit 7 of the memory 30 are connected to the outputs of the reverse counter 21, and the clock input of the memory unit 7 is connected to the input of the pulse generator 2. In addition, the outputs of blocks 6.1-6.3 are connected to the input of the OR element 9, the output of which 35 is connected to the input of the And element 14 and through the inverter 23 to the input of the And element 13, the other inputs of the And 13 elements and 14 are combined and connected to the output of the coping unit 6.4. The output of the generator 1 is connected 40 also to the second inputs of the blocks 6.1-6.4. The output of element 11 AND is connected to the unit in the single state of trigger 18. The direct output of trigger 18 is connected to the subtraction input, and the inverse output is connected to input 45 of the Addition of the reverse counter 21. The clock input of the counter 21 is connected to the output of the OR element 10. The first input of the element 10 is connected to the output of the element 14 OR. The second input of the element 10 is combined with the clock 50 input of the counter 22 and is connected to the pulse generator 2.

The output of the counter 22 is connected to the inputs of the zero state of the triggers 18-20 and the first input of the OR element 8, 55 the second input of which is connected to the output by the elements.

Entrance of the installation to a single state; the trigger 20 is connected to the output of the element 16 And, the first input of which is connected to the ___ inverse output of the trigger 20, and the second to the output of the last digit of the counter 21.

The device operates as follows.

Reading information from the storage medium 24 of the information is carried out at checkpoints in an optical manner. The carrier itself is made passive and direct reading takes place on the principle of reflection of infrared rays. When the vehicle moves through the checkpoint, the code elements of the carrier 24 reflect the infrared light signal from the emitters of the transmitters 3134 and are received by optical receivers 4.1-4.4. Code elements are made of retroreflective material. The luminous flux is modulated by a 1 pulse generator. Optical receivers 3.1-3.4 convert the received signal into electrical signals. Then the sequence of pulses is fed into coincidence blocks 6.1-6.4, to the second input of which the signal from the pulse generator 1 is supplied. This ensures high reliability of the received information. Code elements when moving a vehicle move opposite transmitters 3.1-3.4 and optical receivers

4.1-4.4. Code elements form a seven-segment number. The vehicle number is eight digits. The number is read out by character. The recording of the numbers is provided only when it is opposite the optical transmitting and receiving equipment. This is achieved using a synchronizing segment using transmitters 3.4 and a receiver 4.4. If logical G is detected at the output of block 6.4, a clock signal is received in memory block 7, according to which the corresponding digit code is written from the decoder 17 at the data outputs. The decoder 17 converts the accepted combination from blocks 6.1-6.3 into a form convenient for further processing. The next digit is written to another cell in block 7 of the memory by the next signal of logical 1 of block 6.4. The memory block 7 is in the Record mode, since at the moment of turning on the equipment, the zeroing circuit (not shown) sets the trigger 20 at the input R to 0. Thus, the logical Г of the inverse output is fed to the recording input of the block 7, providing the Record mode. Each digit of the vehicle’s number is written to its memory location at the address generated by the code from the outputs of the reversing counter 21. At the time of recording, the reversing counter 21 always operates in direct counting mode and logical 1 from the inverted output of flip-flop 18. the moment the device is turned on, the trigger at the input R sets the output Q at. 1. (The scheme of zeroing at the time of inclusion in figure 1 is not shown). Each time a code for a new digit of the vehicle number is recorded, counter 21 increases its initial position by one. Logical ”1” to the clock input of the reverse counter 21 receives the output of the logical element 10 OR.

Eight digits of the vehicle number, eight synchronizing segments, and therefore eight counting pulses, are input to the reverse counter 21. At the outputs of this counter 1-2-4-8, the combination of zeros and ones forms the address code of memory unit 7. With the last counting pulse, the output of the last register of the reverse counter 21 appears logical 1, which ^with the logical element 16 And puts the trigger 20 in a single state. On a direct output logical G. Block 7 memory goes into Read mode. The information is produced during the intervals of movement of vehicles on clock pulses from a 2-pulse generator. From the direct output of the trigger 20, the logical G goes to the input of the generator 2 and brakes it. The pulses are fed to the clock input of the counter 22 and through the element 10 OR to the clock input of the reverse counter 21. With the arrival of each pulse, the counter 21 changes its state by one. As in the Record mode, the address code in the Read form mode is. It reverses the counter 21. Logical ”1 at the last output of the counter 22 puts the trigger 20 in the zero state. The pulse generator 2 is immediately braked, the memory unit 7 goes into Record mode, and the triggers 18 and 19 are set to zero.

Thus, the device operates in two modes: Record mode and Read mode. In the Record mode, the reversible counter 21, which generates the address code for the memory block, works in direct count, while the logical 1 is applied to the addition of the counter 21.

Claims (1)

Claim A device for reading a vehicle number, which contains a data carrier with code elements located on the vehicle and optical information receivers installed on a control point, a pulse generator, counters, the input to the zero state of one of which is connected to the output of the OR element, triggers, installation inputs in a single state, which are connected to the outputs of the first and second elements And, and the direct output of the first trigger is connected to the first input of the first element And, inverter, output otorochno connected to the first input of the third element And, and the fourth element I. characterized in that, in order to increase the reliability, it is equipped with coincidence blocks, a memory block, additional trigger, pulse generator, elements AND and OR, and the first counter is made reversible, outputs said pulse generator is connected to the first inputs of the coincidence units, the outputs of the said optical receivers are connected to the second inputs of the coincidence units, the output of one of which is connected to the second input of the third element and the first the input of the fourth AND element, and the outputs of other coincidence units - with the inputs of the decoder and the first additional OR element, the output of which is connected to the inverter input and the second input of the fourth AND element, the output of which is connected to the first input of the additional OR element, the second input of which is connected to the output an additional pulse generator, and the output is to the clock input of the memory block and the clock input of the first counter, the outputs of which are connected to the address inputs of the memory block, data inputs connected to the outputs of the cheap fractor, and the addition and subtraction inputs, respectively, with the inverse and direct outputs of the second trigger, the input of the zero state of which is connected to the output of the second counter connected to the first input of the OR element and the zero inputs of the first and additional triggers, the direct output of the latter is connected to the readout of the memory block and the input of the additional pulse generator, the output connected to the clock input of the second counter, the inverse output is to the write input of the memory block, the input to the zero e state of the second counter, the first input of the second AND element, the first input of the first additional AND element and the first input of the second additional AND element, the output of which is connected to the unit input to the unit state of the additional trigger, and the second input - with the output of the last discharge of the first counter connected to the second inputs of the said second AND element and the first additional AND element, the third input of the first trigger, and the output to the second input of which is connected to the inverse output of the first OR element.