SU1073139A1 - Apparatus for detecting skidding and slipping of vehicle wheels - Google Patents

Abstract

1. A DEVICE FOR DETECTING WAXING AND SWEETS OF A VEHICLE WHEEL, containing a wheel pair speed sensor, a trigger whose direct output is connected to the input of the first And element, an inverse output to the input of the second And element, and a clock generator, the output of which is connected to the inputs The third and fourth And elements, the outputs of which are connected respectively to the summing and subtracting inputs of a reversible counter, characterized in that, in order to improve accuracy, it is equipped with a synchronization unit, a control unit the counting sequence, the memory register, the impuser, which is connected to the output of the speed sensor of the wheelset, and the output to one input of the synchronization unit, the other input of which is connected to the forward output of the trigger, the first output of the synchronization unit is connected to the counting input of the trigger and the other Bch and the first and second elements And, the second output with other inputs of the third and fourth elements And, and the third output with the installation input of the reversible counter and one of the inputs of the control unit An account count, the other input of which is connected to the output of the second element I, one of the outputs to the third input of the third element 5S and I, and the other output to the third input (L of the fourth element I, while the outputs of the reversible counter are connected to the inputs of the memory register, a clock input of which is connected to the output of the first e.tement I.

Description

with

oo with

2. Building lio li. 1, characterized in that the 6.1K synchronization is performed on: j: ieMeiii, i, NOT, the pulse shaper, and t |) H | -iro, |) this is one of the inputs of one l /-j.ieMCHTois I is nerve the input of the synchronization current, and its output is the nerve output of the synchronization unit and the input with the input of the element NOT, but the connected () output through the shaper nmnuliFi to one of the inputs of the other element I, and the other input of which is the second input of the synchronization unit, and output - the second output of the synchronization unit and connected to one of the trigger inputs, the output of which is the third output of the biased choc switch; the other trigger input is the third and the other input of one

of the elements AND - the fourth block of synchronization.

3. The device but it. 1 and 2, characterized in that the unit for controlling the succession of the account is a wave on the And elements and a trigger, while the outputs of the first and second elements And keys to one input of the trigger, and the outputs of the third and fourth elements And to its other input are separate the trigger outputs are outputs of the control unit, with one of the inputs of the first and third elements AND being the first input of the block, one of the inputs of the second and fourth elements AND, the other of its input, and all the other inputs of all elements AND counting sequence.

one

The invention relates to transmission, in particular to devices for detecting boxing and using wheels of vehicles, and can be applied to devices that are made from equipment and boxing.

A device is known for detecting the boxing and the use of the wheels of a transnormal vehicle, which contains a sensor for the speed of a bunk bed, a trigger, the other output of which is connected to one of the inputs of one of the E elements, and the inverted one to one of the inputs of the other element And, and clock generator, the output of which is connected to one of the inputs of the third and fourth Toio elements And, the outputs of which are connected 1P) 1, respectively, with summing and subtracting, and the inputs of the reversing counter 1.

The disadvantage of the device is that. that after passing two IMPs from the frequency sensor (one cycle), the reverse sensor, again switching to the addition mode, adds the newly counted factor to the initial level, the value of which in numerical expression is equal to the acceleration or deceleration defined in the previous cycle. This leads to a norpeniPost in determining the acceleration or deceleration in the new cycle, and ultimately to HorpeyjHocTH in determining the moment of occurrence of the boxing or skid, i.e. lowers the accuracy of the device. In addition, the device works only with a special frequency sensor, because its operation is determined by the design and parameters of the frequency sensor. It is necessary that the pulse width of the frequency sensor is inversely proportional to the speed and it is desirable that the duration

the pause between pulses was mipimal. In this case, in the deceleration mode, and even more so when a user is pushed onto the subtracting input of the reversible counter, a greater number of NMILS is accumulated than on the totaling one, and in its operation can be a loan. KOTOpbni leads to a malfunction of the device. This reduces the reliability of the device.

H, the invention is new.

accuracy.

The goal is achieved by the fact that a device for detecting boxing and wheel drive of a vehicle containing a wheel bed speed sensor, a trigger, the direct output of which is connected to the input of the nerve electeite I, the clear output to the input of the second element And, and clock generator, the output of which is connected to the inputs of the third and fourth elements And, the outputs of which are connected respectively to the summing and deduction of the inputs of the reversing counter, is equipped with a synchronization unit, a phrases unit memory regula- tor, a pulse shaper, a connecting input port with a runner speed, and an output with one input of the synchronization unit. The other input of which is connected to the actual output of the trigger, the first output of the sync block is connected to the counting input of the trigger and other inputs of the first and second elements And the second one) Go to other inputs of the third and fourth elements I. and the third output is with the setup input / mf of the reversible counter and one of the inputs of the sequence control block

the other input is connected to the output of the second element I, one of the outputs is connected to the third input of the third element I, and the other output is connected to the third input of the fourth element I, while the outputs of the reversible counter are connected to the inputs of the memory register, the clock input of which is connected to the output of the first element I.

In addition, the synchronization unit is made on the elements AND, NOT, the pulse shaper and the trigger, while one of the inputs of one of the elements AND is the first input of the synchronization unit, and its output is the first output of the synchronization unit and is connected to the input of the element NOT connected output through a pulse shaper to one of the inputs of another element AND, the other input of which is the second input of the synchronization unit, and the output is the second output of the synchronization unit and is connected to one of the trigger inputs, the output of which is third output of the synchronization unit, the other input of the third flip-flop is, the other input of one of the elements and - fourth input sync block.

The counting sequence control unit is executed on the And elements and the trigger, wherein the outputs of the first and second And elements are connected to one input of the trigger, and the outputs of the third and fourth And elements to its other input, the separate outputs of the trigger, and the inputs of the first and third elements AND are the first input of the block, one of the inputs of the second and fourth elements AND are its other input, and all other inputs of all the elements AND are the third input of the count control unit but.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 is a block diagram of a memory register; in fig. 3 - block diagram .ma block synchronization; in fig. 4 — block diagram of the counting control block; in fig. 5 - time diagrams of the voltage at the outputs of the elements of the device during boking; in fig. 6 - timing diagrams of voltages at the outputs of the elements of the device when using.

The device (Fig. 1) contains a wheel pair speed sensor 1 (for which any frequency angular velocity sensor can be used), its output is connected to a driver 2, for example, a multivibrator, the output of which is connected to the first input 3 of the synchronization unit 4, the second the input 5 of which is connected to the Start bus, the third input 6 is connected to the reset reset, the third output 7 is connected to the combined counting input 8 of the trigger 9 and the first inputs 10 and II of the first 12 and second 13 elements I. Input 14

trigger presets 9 are connected to the “Reset, direct output 15 — with the combined second input 16 of the first element 12 I and the fourth input 17 of the synchronization unit 4, and the inverse output 18 with the second input 19 of the second element 13 I. The second output 20 block 4 synchronization is connected to the first inputs 21 and 22 of the third and fourth elements 23, 24 And, the second inputs 25, 26 of which are connected to the generator 27 of the reference pulses. The third output 28 of the synchronization unit 4 is connected to the preset input of the reversible counter 29 and the first input 30 of the counting sequence control unit 31, the second input 32 of which is connected to the Mode bus, the third input 33 to the output of the second element 13 And, the first output 34 to the third The input 35 of the third element And 23, the second output 36 to the third input 37 of the fourth element And 24. The output of the third element And 23 is connected to the summing input of the reversible counter 29, and the output of the fourth element And 24 to the subtracting input of the reversible counter 29, exits that The go is connected to the inputs of the memory register 38, the clock input 39 of which is connected to you of the first element And 12, and the outputs are the device outputs.

Memory register 38 (FIG. 2) is outputted on D-flip-flops, the number of which is equal to the digit of the counter — p. D-inputs of D-flip-flops are inputs of memory register 38, and the combined C-inputs of D-flip-flops are clock input 39. The outputs of memory register 38 are the outputs of D-flip-flops from w to n. In this case, m is determined from the condition ...- f 2, where A is the number corresponding to the maximum possible acceleration and deceleration without blocking and using this class locomotives.

The synchronization unit 4 (FIG. 3) contains the fifth element 40 I, the first input 41 of which is the first input 3 of block 4, the second input 42 - the second input 5 of block 4, and the output is connected to the element 43 NOT and is the first output 7 unit 4. The output of element 43 is NOT connected to the second pulse shaper 44, for example, a standby multivibrator, the output of which is connected to the first input 45 of the sixth element 46 And, the second input 47 of which is the fourth input 17 of the unit 4. And the output is the third output 28 unit 4 and is connected to the installation input 48 RS flip-flop 49, input 50 preset which is the third input 6 of block 4, and the other output is the second output 20 of block 4.

The counting control block 31 (FIG. 4) contains the seventh, eighth, my, ninth and tenth elements And 51, 52, 53 and 54, as well as the second RS flip-flop 55,. jL-M direct 5th input of the seventh element.: i ii and the first input 56 of the ninth epypement :): ii are the first input 30 of block 31, 11) 1st input of the tenth element 54 AND and perHbiii input 57 of the eighth element 52 AND are the second input 32 of block 31, the inverse inputs of the seventh and tenth elements 51, 54 AND and the second inputs 58, 59 of eocbMOio and the ninth elements 52, 53 AND are the third input of block 31, the indirect trigger output 55 in. 1 the first output 34, and the invest |) output - the second output 36 of block 31, the input 60 of the preset trigger 55 is connected to the outputs of the seventh and eighth elements 51, 52 I, and the input 61 is set and - with the outputs of the ninth and tenth elements 53. 54 I. The device works as follows Initially, when the power supply is paired to the control system with a first electric drive (re-shown) from the logic control unit of operating modes (not shown) but “Reset to input 50 of the preset the trigger 49 of the synchronization unit 4 and the input 14 of the preset trigger 9 enters them .111s1n 1Y signal of the logical unit, which sets the device to the initial state inie. Then, when a setpoint signal is issued to the system by an actuator from the logical slave mode control unit () bus, the Start receives a separate unit 1) 1 signal of the logical unit to the upstream input 42 of the 40I element of the synchronization unit 4, which is present on it during the movement of the locomotive. Operation of the device in the boxing mode and in the user mode is explained by the time H1 diagrams (Fig. 5 and 6, respectively). (For Nrimer, they show the device operation with a sensor of the same type as prototype i. When using a different frequency sensor, the time diagrams will differ only in the form of the pulse sequence (Fig. 5a and 6a), and the actual time diagrams and operation devices will be the same). When the wheelset rotates, the signal from the frequency sensor 1 (Figs. 5a and 6a) goes to the first imager 2; 1сso, which produces short pulses of stable duration (Fig. 56 and 66), corresponding to the leading edge of the sensor pulses 1. These pulses go to nerve input 3 blocks 4 synchronization, which | The second one synchronizes all the other blocks and elements of the device. Through the open at the second input, the 42nd fifth element 40 And the pulse signals arrive at the element 43 NOT and at the combined first inputs 10 and 11 of the first and second elements 12, 13 AND and the counting input 8 of the trigger 9. The output pulses are thermal 1 43 1E 5c and (ib) receive at the second formative 44 pulses, n 1khodii and 1e .1sy of which (php 5g and 6g) gost 1 will go to the first inlet 45 of the inecToio element 46 I. When entering lepEioro in cycl.p.p.p. and and input 8 of the trigger 9 on its direct output 15 sets the potential signal of the logical unit (Fig. 5e and () d), and on the inverse output ode 18 - iote11tsia: 1ny sig1-1a.1 logical zero (() ig. 5e and be). Potential signal ({() ig. 5d and 6d) from direct B1) 1hode 15 trigger 9 just to the second input 16 of the nerve element 12 P and in coincidence with the pulse signals (figs. 56 and 66) at its output appear pulse signals (phi 5 5i and 6p), which are fed to the clock input 39 of the register 38 1 ti. Using these signals in K (L1pe of each cycle), the result of the counting from B1; 1 input of the reversible counter 29 is rewritten to register 38 and it. The warm signal (Fig. 5d and 6d) is also connected to the second input 47 of HiecTOio elematta 4 ( :) P. In case of coincidence with IMU; P) CHN cnrna.ibi (Fig. 5d and 6d) Irohod T Ilestoi emlesmt 46 I. These im.in.-15 signal (5 kn (Sk) go to the first input 30 units 31 un |) aw; 1111; and successively clearing accounts and pa re-input input of the reversing 1 og (. ciCTnnka 29. These signals immediately after recording the counting result in the memory register 38 reset the reversing schcc-29). Receipt of the second in the secondary command. Ix 8 triggos |) a 9 pa his n) on the run 15 set-up ;; 1yp1P11 a.1NP) 1st signal; : Logic (; 1H) n. L (Fng. 5d n (|) ng. 6d), and on P11ve) sleep vngs; de 18 potential signal .1O l; chesko11 unit (fig. 5e and b) It stops the second input 19 of the second e.lement 13I. When combined with this signal m. (() Pg, 5c and be) and pulsi1e sigia.ly (Fig. 56 and () 6) the passage of the vlch; a swarm of elemept 13 P and go to the second input of the control unit 31 .leverything of the account. When a locomotive moves from a l; l1bl.block of control of modes in accordance with the “Rezhpm” mode for the third input of the block, 31 unleveled and next investigators have lost ioter-1 logical signal l. If the locomotive is in a traction mode, it is io potential. With: ig1 and.h: logically. which permits the passage of pulsed logical signals through the seventh and tenth elements 51, 54 P and ipeniaeT of their passage through the eighth and ninth elements 52, 53 P. V.; the break of pulses arriving at the first input of the .31 control unit ( )) The account is passed to setup input 60, and the pulses coming to the second input of block 31, to input 61 of the preset trigger 55. Thus, the first pulse in the cycle sets a potential signal of a logical unit ( Fig. 5g), and on the inverse output 36 - potential cial signal is logic-zero (FIG. 5h). These signals come to the third inputs 35 and 37 of the third and fourth elements 23, 24 AND, respectively. At the same time, stable frequency pulses from the generator 27 reference pulses pass the third element 23 I and arrive at the summing input of the reversing counter 29. The second pulse in the cycle sets the potential logic zero signal on the direct output 34 of the trigger 55 (Fig. 5g), and at the inverse output, 36 is a potential signal of a logical unit (Fig. 5h). The third element 23 And is closed by the third input 35, and through the fourth element 24 And the stable frequency pulses are fed to the subtracting input of the reversible counter 29. At the end of the work cycle in the reversible counter, the number is proportional to the acceleration of the locomotive during the cyclic time. The pulse signal (Fig. 5i) at the end of the cycle overwrites the specified number into the memory register 38. In the event that a block occurs, the number recorded in memory register 38 will exceed the number A, and a digital signal appears at the outputs of the memory register, proportional to the excessive acceleration of the wheelset.

If the locomotive is in braking mode on the “Mode” bar, the third input of the counting sequence control unit 31 receives a potential signal of a logical unit that permits the passage of pulsed logic signals through the eighth and ninth elements 52, 53 I. In this case, the pulses arriving at the first the input 30 of the counting control block 31 is passed to the input 61 of the preset, and the pulses arriving at the second input of the block 31 are fed to the input 60 of the flip-flop setup 55. Thus, the first in the cycle sets the pulse to the inverse output 36 of the trigger 55 is a potential signal of a logical unit (FIG. 6h), and at the forward output 34 there is a potential signal of a logical zero (FIG. 6g), which arrive

on the third inputs 37, 35 of the fourth and third elements 24, 23 And, respectively. In this case, the stable frequency pulses from the generator 27 reference pulses pass the fourth element 24 I and arrive at the subtracting input of the reversible counter 29. The second pulse in the cycle sets the potential output of the logical unit on the direct output 34 of the trigger 55 (FIG. 6). inverse output 36 a potential signal of logical zero (Fig. 6 h). The fourth element 24 And is closed by the third input 37, and through the third element 23 And the stable frequency pulses arrive at the summing input of the reversible counter 20 At the end of the work cycle, a number proportional to the deceleration of the locomotive during the cycle time is recorded in the reversible counter. The pulse signal (php. 6n) at the end of the cycle overwrites the specified number in register 38 of memory. In the case of a skid, the number recorded in memory register 38 will exceed the number A and a digital signal will appear at the outputs of the memory register, proportional to the excessive deceleration of the wheelset.

The digital signal from the memory register output is fed to the traction drive control system and is used to reduce the traction or braking force, respectively.

If the control system is digital, such as a microprocessor, this signal is fed directly, if the frequency is through a code-frequency converter, and if analog is via a code-voltage converter.

The base object of the adopted anti-box protection is PBZ-154T of the VL-10 electric locomotive.

The proposed device, in comparison with the base object, more accurately and reliably detects and eliminates blocking, and in contrast to the base object, it detects and eliminates software. This allows you to increase the average speed of movement and increase the repair time of electric locomotives, reduces power consumption and increases traffic safety.

The need of households for objects using the proposed invention, for example, for mining vehicles on heavy electric locomotives, is 100 schm. in year.

Fy

Claims (3)

1. DEVICE FOR DETECTING BOXING AND USE OF VEHICLE WHEELS, comprising a wheel pair speed sensor, a trigger, the direct output of which is connected to the input of the first element And, an inverse output - to the input of the second element And, and a clock generator, the output of which is connected to the inputs of the third and the fourth AND element, the outputs of which are connected respectively to the summing and subtracting inputs of a reversible counter, characterized in that, in order to increase accuracy. it is equipped with a synchronization unit, a counting sequence control unit, a memory register, a pulse shaper connected to the input to the output of the wheel pair speed sensor, and an output to one input of the synchronization unit, the other input of which is connected to the direct output of the trigger, the first output of the synchronization unit is connected to the counting trigger input and other inputs of the first and second AND elements, the second output with other inputs of the third and fourth AND elements, and the third output with the installation input of the reverse counter and one of the inputs of the counting sequence control unit, the other input of which is connected to the output of the second AND element, one of the outputs is with the third input of the third AND element, and the other output is with the third input of the fourth AND element, while the outputs of the reverse counter are connected to the inputs of the memory register whose clock input is connected to the output of the first element I. 2. The device but also. 1, characterized in that the synchronization unit is made on the element AND, NOT, the pulse shaper And trig! I pc. ! In this case, one of the inputs of one of the _h elements AND is the first input of the synchronization unit, and its output is the first output of the synchronization unit and is connected to the input of the element NOT connected by the output through the pulse shaper to one of the inputs of the other element AND, the other input of which is the second input block synchronization, and the output is the second output of the synchronization block and is connected to one of the inputs of the trigger, the output of which is the third output of the synchronization block, the other input of the trigger being the third and the other input One of the And elements is the fourth input of the synchronization block. 3. The construction of pi. 1 and 2, characterized in that the control unit of the sequence of counting is performed on the elements And the trigger, while the outputs of the first and second elements And are connected to one input of the trigger, and the outputs of the third and fourth elements And are connected to its other input, the separate outputs of the trigger are the outputs of the control unit, and one of the inputs of the first and third AND elements is the first input of the unit, one of the inputs of the second and fourth AND elements, its other input, and all other inputs of all AND elements are the third input of the control unit sequence of counting.