RU2012144281A - METHOD AND DEVICE FOR DETERMINING TRAIN LENGTH - Google Patents

Abstract

1. A method for determining the length of a train for a train of multiple wagons (1a-1s), in which, using a pneumatic brake system, in accordance with the pressure in the main air line (HL) passing from the car (1a) to the car (1c), braking is performed in several stages, the pressure (p) and flow rate (), as well as the ambient temperature (T) at which they are recorded using a sensor technique along the time axis, on the basis of which the train length (L) is calculated using the electronic processing unit (4), characterized in that the registration of the measured parameter Using the sensor technology, they are carried out, starting from the steady state of the current braking stage (I.) during the next braking stage (II.) until the steady state is reached, then due to the subsequent integration of the flow rate () during the removal of air from the main pneumatic pipe (HL ) to perform the next stage of braking (II.), taking into account the pressure (p) prevailing in the initial and final states, as well as the ambient temperature (T), the volume of the main pneumatic line (HL) is calculated, after which on this basis with the known section (Q) of the main air line (HL), the length (L) of the train corresponding to its length is determined. 2. The method according to claim 1, characterized in that for determining the length (L) of the train during the air supply to the main air line (HL), the measurement parameters are recorded using the sensor technique only until the pressure (p) connected to the main air line (HL) is reached receiver (8) .3. The method according to claim 1, characterized in that when calculating the cross-section (Q), the main air line (HL

Claims (10)

1. A method for determining the length of a train for a train of multiple wagons (1a-1s), in which, using a pneumatic brake system, in accordance with the pressure in the main air line (HL) passing from the car (1a) to the car (1c), braking is performed in several stages, pressure (p _HL ) and flow rate ( $$\dot{V}$$

), as well as the ambient temperature (T) at which they are recorded using sensor technology along the time axis, on the basis of which the train length (L) is calculated using the electronic processing unit (4), characterized in that the measurement parameters are recorded using the sensor technology, starting from the steady state of the current braking stage (I.) during the next braking stage (II.) until the steady state is reached, then due to the subsequent integration of the flow ( $$\dot{V}$$

) during the removal of air from the main air line (HL) to perform the next braking stage (II.), taking into account the prevailing pressure in the initial and final states (p _HL ), as well as the ambient temperature (T), calculate the volume of the main air line (HL), after on this basis, with the known section (Q) of the main air line (HL), the train length (L) corresponding to its length is determined. 2. The method according to claim 1, characterized in that for determining the length (L) of the train during the supply of air to the main air line (HL), the measurement parameters are recorded using the sensor technique only until the pressure (p _HL ) connected to the main air line is reached (HL) receiver (8). 3. The method according to claim 1, characterized in that when calculating the cross-section (Q), both the cross-section of the main air line (HL) passing through the individual cars (1a-1c) and the cross-section of the couplings located between them (5) are taken into account. 4. The method according to claim 1, characterized in that in the steady state, the volumetric flow caused by the leakage of the pneumatic brake system is measured (

) to use this measured parameter to eliminate the perturbing parameter as a correction value in computing the length (L) of the train using computer technology. 5. The method according to claim 1, characterized in that when determining the length (L) of the train with a preliminary at least one-time determination of the volume (V) of the main air line (HL) as an adjustment value, the air volume (V ), which is lost due to brake acceleration losses of individual control valves (6) assigned to the brake cylinders (7) from the released state of the brake system. 6. The method according to claim 1, characterized in that in a two-wire mode in which consumers of compressed air are filled through a separate pneumatic pipe (HB) of the main reservoir, and the main pneumatic pipe (HL) is intended solely for braking, determining the volume (V) of the main pneumatic pipe ( HL) is carried out while releasing the brakes due to air supply to it. 7. The method according to claim 6, characterized in that the correction value representing the leakage of the brake system is subtracted depending on the pressure (p _HL ) from the measured flow rate ( $$\dot{V}$$

) 8. A device for determining the length of a train for a train of multiple cars (1a-1c), the pneumatic brake system of which, in accordance with the pressure in the main air line (HL) passing from the car (1a) to the car (1b), is capable of braking the train several steps, and the sensors (2A-2C) are made with the possibility of recording pressure (p _HL ) and flow ( $$\dot{V}$$

), as well as the ambient temperature (T) along the time axis, while the electronic processing unit (4) is designed to calculate the length (L) of the train, characterized in that the processing unit (4) is configured to record the measured parameters using the sensor technique, starting from the steady state of the current braking stage (I.) during the next braking stage (II.), until the steady state is reached, so that through the subsequent integration of the flow ( $$\dot{V}$$

) during the removal of air from the main air line (HL) to perform the next braking stage (II.), taking into account the prevailing pressure in the initial and final states (p _HL ), as well as the ambient temperature (T), calculate the volume of the main air line (HL), after why on this basis, with the known section (Q) of the main air line (HL), determine the train length (L) corresponding to its length. 9. The device according to claim 8, characterized in that the sensor (2b) is designed to measure flow ( $$\dot{V}$$

) of the main pneumatic line (HL) during the shift between steady states, moreover, to measure leakage in the steady state, the sensor (2b ') made smaller in comparison with it is used. 10. The composition of the train from many cars (1A-1C), made with the possibility of braking by means of a pneumatic brake system in accordance with the main pneumatic pipe (HL) passing through them, comprising a device for determining the length of a train according to claim 8 or 9.