SU1318800A1 - Device for measuring mass of electric train in motion - Google Patents

Abstract

The invention relates to a measurement technique and allows for improved measurement accuracy. In the speed counter 14, a number is accumulated that is proportional to the path traveled by the electric train beyond T, where T is the period of the pulses following the generator 2, N is the number accumulated in the reversible counter O) oo CX) o

Description

15; C - impulse reference duration. In the path counter 16, the number N, proportional to the path Tr + T NJ, accumulates from the time of the reset in O of the output of block 10 to the moment of installation 1, at the output of block 25. Similarly, the counters 17 and 29. The control block 27 works when the unit potential arrives by 1

The invention relates to a measuring technique, in particular, a weighing apparatus, and can be used to measure the mass of electric trains in motion without limiting their speed.

The purpose of the invention is to increase the measurement accuracy.

The proposed device makes it possible to determine the weight of an electric train by the dynamics of its movement in any of the modes (tons of ha, coasting, braking). By placing the entire device on the train, weighting can be carried out anywhere on the track.

FIG. 1 shows a functional diagram of the device, FIG. 2 is a functional diagram of a counting pulse generation unit; in FIG. 3 - | functional diagram of the time block; in FIG. 4 is a functional block diagram of the control unit; FIG. 5 - time diagram of device operation

The device contains a motion mode sensor 1, a clock pulse generator 2, a position sensor 3, a comparison circuit 4, a first circuit AND 5, a first inverter 6, a first driver 7, a divider 8 into two, a second trigger 9, a first counting pulse shaping unit 10, the fifth circuit And 11, the second circuit And 12, the counting unit 13 time, the first counter 14 speed, the first reversible counter 15 speed correction, the counter 16 ways, the reversible counter G / time correction, the third circuit And 18, the first trigger 19, the scheme OR 20, frequency. the pulse modulator 21, the second driver 22, the sixth 23 and the fourth 24 circuits And, the second block 25 of the formation of the counting pulses entering the computing unit 33, where the information from the counters 14-17 and 29-31 is recorded. Then, the computing unit 33 determines, using the above formulas, the train speed at the beginning: e and at the end of the measurement cycle, the measurement time, the distance traveled by the train, the average voltage of the contact rail in the measurement cycle. 5 il.

15

0

five

0

five

0

swarm inverter 26, control unit 27, third trigger 28, second speed counter 29, second reversible speed correction counter 30, medium voltage counter 31, delay block 32, computing unit 33, third inverter 34, and second OR circuit 35.

The generation unit of the counting pulses (Fig. 2) consists of a reference frequency generator 36, a trigger 37 and 38, circuits And 39-43 and inverters 44 and 45.

The countable time block (Fig. 3) consists of a counter 46 and a comparison circuit 47.

The control unit (Fig. 4) consists of an inverter 48, a trigger 49, weighing mode 50 detectors and a measuring time 51.

Computing unit 33 can be implemented on the basis of a standard microcomputer Electronics 60 15VM-16.

The position sensor 3 is connected to the input of the forcing device .7, and the first output of the control unit 27 and the output of the speed counter 14 are connected respectively to the first and second inputs of the computing unit 33. The output of the motion mode sensor I is connected to the first input of the comparison circuit 4, the output of which is connected to the first the input of the first circuit And 5 connected to the installation input of the divider 8 into two and the second input of the circuit 12, the output of which is connected to the first input of the counting time unit 13, the output of which is connected to the first inputs of the circuits 1B and 24 and the input of the inverter 6, Unification with the third input of the AND circuit 5. The output 2 is connected to the clock input of the second circuit

And 5 and the second input circuit And 18, the output of which is connected to the installation input of the trigger 19, connected to the input of the inverter 26, the output of which is connected to the second input of the circuit 24, the output of which is connected to the first input of the unit 25 forming the counting pulses 25. The output of the imager 7 connected to the second input of the circuit 11 and to the second inputs of the blocks 10 and 25 of the formation of the counting pulses. The first output of the counting pulse shaping unit 10 is connected to the second input of the OR 20 circuit and to the setup input of the trigger 9, the output of which is connected to the first inputs of the AND 11 and 12 circuits, the first input of the OR circuit 20 and the reset input of the divider 8 to two, the output of which is connected to the first input of the unit 10 of the formation of the counting them, 20 And 23, connected to the counting input

pulses. The second output of the counting pulse generation unit 10 is connected to the counting input of the speed counter 14. The third output of the counting pulse shaping unit 10 is connected to the return inputs of the reverse time correction 17 and speed correction counter 15. The fourth output of the counting pulse shaping unit 10 is connected to the summing input of the reverse speed correction counter 15, the output of which is connected to the fourth input of the computing unit 33. The output of circuit 11 is connected to the counting input of track 16, the output of which is connected to the fifth input of the computing unit. The first output of the counting pulse shaping unit 25 is connected to the reset input of the trigger 9, the third input of the OR circuit 20 and the setup input of the trigger 38, the output of which is connected to the first input of the control unit 27 and to the input of the delay unit 32, the output of which is connected to the first input of the OR circuit 35 The output of which is connected to the reset inputs of the control unit 27, the computing unit 33, the counters 14 and 29 of the speed of the reversing counters 15 and 30 of the speed correction, the reversible counter 17 of the time correction, the counting block 13 of time, the counter 31 of the average voltage audio, path counter 16 and triggers 19 and 28. The second output

block 25 forming counting impulses-55gateli. The value of f K, and, where Cc cos is connected to the counting input, is a count-coefficient of proportionality. The speed mark 29, the output of which is connected from the output of the modulator 21, is directly connected to the seventh computational input and is fed to the input of the display unit 33. The third output of the counting impulse generation unit 25 is connected to the subtractive input of the speed correction reversing counter 30

and to the summing input of the reversible time correction counter 27, the output of which is connected to the sixth input of the computing unit 33. The fourth input of the counting pulse generation unit 25 is connected to the summing input of the speed correction reversing counter 30, the output of which is connected to the eighth input of the computing unit 33. Output of the frequency pulse module the voltage torus 21 is connected to the input of the imager 22, the output of which is connected to the second input of the circuit AND 23c The output of the circuit OR 20 is connected to the first input of the circuit

5 0 5 0

medium voltage meter 31, the output of which is connected to the ninth input of the computing unit 33. The second output of the control unit 27 is connected to the second input of the comparison circuit 4 and to the third input of the computing unit 33. The third output of the control unit 27 is connected to the second input of the counting unit 13 time. The output of the comparison circuit 4 is connected to the input of the third inverter 34, the output of which is connected to the second input of the second circuit OR 35.

The device works as follows.

When driving an electric train, sensor 3 generates a signal with a frequency proportional to the speed of the electric train. The signal from the output of the sensor 3, modulated in frequency, is continuously fed to the input of the imaging unit 7, which generates pulses of a given amplitude. The frequencies of the input and input signals of the imaging unit 7 coincide. The period of the pulses from the output of the imaging unit 7 is equal to the time taken by the electric train for a fixed distance LPZ.

The pulse frequency modulator 21, located in the high voltage circuit, produces a signal with a frequency f proportional to the voltage U supplying the driving motors

from the output of the modulator 21 for the

nor continuously fed to the input of the imager 22, working similarly to the imaging unit 7.

In the initial state, the outputs of the flip-flops 9, 19 and 28, the circuit 4 of the divider 8, the counting unit 13, the blocks 10, 25, 27 and 32 have logical O potentials. The outputs of the counters 14-17 and 29-31 connected to the inputs of the computing unit 33 also have potentials logical o.

At the output of sensor 1, a coded signal about the train mode (t ha, coasting, braking) is constantly generated, which is fed to the input of circuit 4,

When a weighing command is produced by block 27 in a given motion mode, a coded signal on a given motion mode arrives at the second output of block 27 and arrives at the second input of circuit 4. At the same time, a coded signal of a given measurement time is supplied to the third output of block 27 the second input of the counting unit 13.

In case of coincidence, the coded signals arriving at the first and second inputs of circuit 4 (the electric train is in the specified mode), the output of this circuit appears at logic level 1. In this case, the falling edge of the first pulse coming from generator 2 through AND circuit 5 to input the divider 8, the output of the divider 8 is set to 1 at the time T until the arrival of the next pulse at its input (Tj, is the pulse following period, using the generator 2),

A single potential from the output of the divider 8 is fed to the first input of the block 10, the second input of which continuously receives pulses from the output of the imager 7. On the falling edge of the first pulse that enters the second input of the block 10 under the condition of installation 1 at the first input of the block 10, on the first The output of block 10 is set to a single potential. At the same time, the second output of block 10, connected with the counting input of counter 14, begins to receive pulses from the second input of block 10. In the time interval corresponding to 1 at the first input of block 10 and O at its first output, from the third output of block 10 pulses the reference duration t is fed to the subtracting inputs of the reversible meters 15 and 17. From the moment of installation O at the first input

block 10 on the falling edge of the first pulse arriving at the second input of block 10, the first and second outputs of block 10 are set to O. In the time interval corresponding to zero potential at the first input of block 10 and 1 at its first run, from the fourth output of block 10 the pulses of the reference duration are received at the summing counting input of the reversible counter 15.

Thus, in the speed counter 14, the number N is accumulated ;, proportional to the distance traveled by the electric train during T + tN, where Ng is the number accumulated in the reversible counter 15.

On the trailing edge of the pulse that came from the first output of block 10

the input of the trigger 9, the output of the trigger 9 sets the logic level 1, arriving at the reset input of the divider 8, thus not allowing the divider 8 to 1 to be transferred further and to the first inputs of the circuits 11 and 12, whereby the pulses from the output of the former 7 through the circuit And 11 begin to flow to the counting input of the counter 16 of the path, and the pulses from the output of the generator 2 through the circuit And 5 and 12 begin to flow to the first input from the counting unit 13 time. At the moment when the measurement time becomes equal to the specified (,) set on

the second input of the counting unit 13, on unit 13 a single Potential appears, coming 1st through the inverter 6 to the third input of the circuit AND 5, a potential is set at its output

logical O. The counting of pulses by the block 13 stops. Simultaneously, 1 from the output of this block enters the first inputs of the circuits And 18 and 24. At the same time, at the first output of the circuit, And

24, associated with the first input of unit 25, is set 1. From the moment of installation 1, the unit potential is set at the first output of the first input of unit 25 at the falling edge of the first pulse received from shaper 7 to the second input of this unit. In this case, the trigger 9 is reset to O, and the counting of pulses by the track counter 16 is stopped. Thus, in the track counter 16, the number Nj is accumulated, which is proportional to the distance traveled by the train during the time from the moment of resetting the first output of block 10 to Mo 713.

unit 1 at the first output of the block 25. On the falling edge of the first pulse received from the generator 2 clock pulses through the circuit 18 to the input of the trigger 19, the output of block 25 sets a unit potential from the output of the trigger 19 via the inverter 26 to the second input circuits AND 24 and setting O at its output. Thus, at the first input of block 25 a pulse of duration Tp is formed,

The operation of block 25 (its response to a pulse of duration T at its first entrance) is similar to the operation of block 10. In the speed counter 29, a number N is accumulated, which is proportional to the distance traveled by the train during Tr + TN from the moment it was set to 1 of the first output of block 25, where Nj is the number accumulated in the reverse speed correction counter 30. In the reversible counter 17, a number Nf is accumulated, proportional to the time

T (T, „. + T.), where T is the actual

measurement time (time from the moment of installation 1 at the first output of block 10 to the moment of installation 1 at the first output of block 25). From the moment of installation of the first output of the block 10 to 1 and until the reset of the first output of the block 25 from 1 to O, the pulses from the output of the former 22 are sent to the counting input of the medium voltage counter 31, in which

T + That

NT number proportional to U (t) dt

 Where U (t) is the contact voltage

rail.

When the first output of block 25 of 1 is reset to O, the output of trigger 28, connected to the first input of control block 27, is transferred to 1. A single potential at the first input of block 27 is a sign of the completion of the measurement cycle. Block 27, when a unit potential arrives at its first input, forms 1 at its first output, coming from the first output of block 27, and the first input of the computing unit 33. At the same time, information is written to the calculator 33 from the counters 14-17 and 29-31.

Based on this information, the computing unit 33 determines the train speed at the beginning and end of the measurement cycle.

V -. . N ± iS V g To-TNy

measurement time

T - T3, - N, r + T ",

distance traveled by train

S (N, + N3) 418,

average contact rail voltage in a measurement cycle

and

NЧ К „(T + TO)

and further, in accordance with the train movement mode in the measurement cycle (based on the code of the driving mode set at the third input of the computing unit 33), the computing unit 33 calculates the mass G of the electric train according to one of the calculation formulas:

.V + KB

GT

(V, -V,) - Kg T-KBj (V, + V)

| Where Kg, Kg, Kg, KB.- known

coefficients /

braking

KTP, V, V, + K ,, P (V, + V,)

G T (V, -V,) -Ktr, T-KTP ,. T (V, -t-V ,,)

where is Chur, KTP ,,

K,, - known coefficients j

K S-K T (

t ha

G

(V2-V2) + KT.S

where KT, 5 KT,

K, K, K - known coefficients.

Since the installation of the unit potential at the output of the trigger 28 after a predetermined time, implemented by the delay unit 32 and required for recording information from counters 14-17, 29-31 into the computing unit 33 and calculating the mass of the electric train, the output potential of the delay unit 32 is set to resetting all units of the device to its original state

Claims (1)

Invention Formula Devices for measuring the mass of electric trains in motion, comprising 91 position sensor, first driver, clock generator, time counter, delay unit, first and second circuits AND, first and second SHS circuits, control unit, first and second speed counters, motion sensor, track counter, average voltage counter, voltage pulse frequency modulator and computing unit, with the output of the position sensor connected to the input of the first driver, and the outputs of the first and second speed meters are connected respectively to the second and seventh inputs of the computing unit, ne The first, fifth and ninth inputs of which are connected respectively to the first output of the control unit. to the output of the track counter and to the output of the medium voltage counter, about t i and - h and y, so that, with the aim of improving the measurement accuracy, a comparison circuit is introduced in it, the first, second, and third inverters, the divider by two , the first, second and third triggers, the third, the fourth, the fifth and the ti of the pole of the AND circuit, the first and second blocks of forming counting impulses, the first and second reverse speed correction counters, the reverse time correction counter and the second driver, and the output of the motion mode sensor 1 is connected to the first input of the comparison circuit the output of which is connected to the first input of the first circuit And connected by its output to the set input of the divider into two and the second input of the second circuit And, the output of the second circuit And connected to the first input of the counting time block, the output of which is connected to the first inputs of the third and fourth circuits And the input of the first inverter connected by its output to the third input of the first circuit And, the output of the clock generator is connected to the second input of the first circuit And and the second input of the circuit And, the output of which is connected With the installation input of the first a trigger connected by its output to the input of the second inverter, the output of the second inverter is connected to the second input of the fourth And circuit, the output of which is connected to the first input of the second block of forming the counting pulses, the output of the first driver And connected to the second input of the fifth And circuit, and to the second inputs of the first and the second block forming the counting pulses. 010 the first output of the first generation unit of the counting pulses is connected to the second input of the first OR switch and the installation input of the second trigger, the output of which is connected to the first inputs of the second and fifth circuits AND, to the first input of the first OR circuit and to the reset input of a divider into two, connected by its output to the first input of the first generation unit of the counting pulses, the second output of the first generation unit of the counting pulses is connected to the counting input the first speed counter, the third output of the first The counting pulse generator unit is connected to the subtractive input of the time correction reverver counter and the subtractive input of the first reversing speed counter, the fourth output of the first counting pulse shaping unit is connected to the summing input of the first reverse speed correction counter, the output of which is connected to the fourth the input of the computing unit, the output of the fifth circuit And is connected to the counting input of the path counter, the first output of the second block forming the counting pulses is connected to the reset input the second trigger, the third input of the first OR circuit, and the setup input of the third trigger, the output of which is connected to the first input of the control unit and the input of the delay unit connected by its output to the first the input of the WTO-swarm of the OR circuit, the output of the second SHS circuit is connected to the reset inputs | control unit, computing unit, first and second counters speed, first and second reversible speed correction counters, reversible time correction counter, path counter, time counter, average voltage counter, first and third triggers, the second output of the second counting pulse shaping unit, the third output of the second block forming the counting pulses is connected to the output input of the second reversible speed correction counter and to the summing up input of the reversible time correction counter, the output of which is connected to the sixth input of the computing unit, the fourth output of the second generation unit of the counting counting pulses is connected to the summed input of the second reversing 11 1 speed correction counter, the output of which is connected to the eighth input of the computing unit, the output of the frequency-pulse voltage modulator is connected to the input of the second driver, the output of which is connected to the second input of the sixth AND circuit, the output of the first OR circuit, the output of which is connected to the counting input of the counter R 18800 2 medium voltage, the second output of the control unit is connected to the second input of the comparison circuit and to the third input of the computing unit, the third 5 output of the control unit is connected to the second input of the counting time unit, the output of the comparison circuit is connected to the input of the third inverter, the output of which is connected to the second input of the second W IL scheme. L1 Phys .2 hell R eight 9 Fig.Z 50 51 one FIG. U 1 ".. oh . 10-3 9 12 3/1 25-t 25-2 25-J 2523 25 32 Editor A. Kozoriz Tehred V. Kadar Order 2497/32 Circulation 693 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG 5 Proofreader A.Ilyin