Electronic control system of emergency and service braking for a railway vehicle

Patent metadata

Field	Value
Publication number	US-2020031330-A1
Application number	US-201816604211-A
Country	US
Kind code	A1
Filing date	Apr 11, 2018
Priority date	Apr 12, 2017
Publication date	Jan 30, 2020
Grant date	—

Abstract

An electronic control system of emergency and service braking comprises an emergency brake module and a service brake module, each module including an independent and segregated electronic architecture. The service brake module receives a deceleration/service braking demand signal and generates a service braking pressure signal. The emergency brake module connected to the service brake module to receive the service braking pressure signal, receives a signal indicative of an emergency braking demand, generates a respective intermediate braking pressure signal indicating an emergency braking, generates a signal corresponding to the higher value between the service braking pressure signal and the intermediate braking pressure signal indicative of an emergency braking, which is converted to braking pressure.

First claim

1 . An electronic control system of emergency and service braking for a railway vehicle, comprising an emergency brake module and a service brake module, each module including an electronic architecture arranged to generate a braking pressure value, each electronic architecture being independent and segregated from each other;
the service brake module being arranged to receive at least one deceleration/service braking demand signal and to generate a respective service braking pressure signal; the emergency brake module being connected to said service brake module through a communication channel for receiving said service braking pressure signal; the emergency brake module being arranged to receive at least one signal indicative of an emergency braking demand, and to generate a respective intermediate braking pressure signal indicative of an emergency braking; said emergency brake module being arranged to generate a braking pressure control signal corresponding to the higher value between the service braking pressure signal and the intermediate braking pressure signal indicative of an emergency braking, and to convert said braking pressure control signal into a braking pressure by controlling an electro-pneumatic actuator.

2 . The electronic control system of claim 1 , wherein the at least one signal indicative of an emergency braking demand is a signal indicating control pressure of a braking system of the railway vehicle, of which at least one extreme value is indicative of an emergency braking condition.

3 . The electronic control system of claim 1 , wherein the at least one signal indicative of an emergency braking demand is a signal coming from an electric emergency loop.

4 . The electronic control system of claim 1 , wherein the emergency brake module is designed in accordance with the requirements of EN50128 SIL≥3 and EN50129 SIL≥3.

5 . The electronic control system of claim 1 , wherein the service brake module is designed in accordance with the requirements of EN50128 SIL≤2 and EN50129 SIL≤2.

6 . The electronic control system of claim 1 , wherein the emergency brake module modulates at least one signal indicative of an emergency braking demand with a weight signal of the railway vehicle.

7 . The electronic control system of claim 1 , wherein the service brake module modulates the deceleration/service braking demand signal with a weight signal of the railway vehicle.

8 . The electronic control system of claim 1 , wherein the service brake module is realized within other control systems on board the railway vehicle.

9 . The electronic control system of claim 1 , wherein the emergency brake module is connected to a torque sensor means of electrodynamic braking torque.

10 . The electronic control system of claim 9 , wherein said torque sensor of the electrodynamic braking torque and its management are designed in accordance with the requirements of EN50128 SIL≥3 and EN50129 SIL≥3.

11 . The electronic control system of claim 9 , wherein said emergency brake module generates a braking torque by demanding electrodynamic braking torque, monitoring continuously the electrodynamic braking torque by means of said torque sensor and compensates for a possible lack of torque through production of pneumatic braking torque.

12 . The electronic control system of claim 1 , wherein said emergency brake module corrects a braking pressure according to adhesion available in function of the railway vehicle speed.

13 . The electronic control system of claim 1 , wherein said communication channel is a wireless channel.

14 . The electronic control system of claim 1 , wherein said communication channel is made by a bus.

15 . The electronic control system of claim 1 , wherein said communication channel is made through hardwired row solutions.

Assignees

• Faiveley Transport Italia Spa

Inventors

• Tione Roberto

Classifications

• B60T13/683

  in pneumatic systems or parts thereof (in vacuum systems B60T13/72) · CPC title

• B60T17/228 Primary

  for railway vehicles · CPC title

• B60T13/665 Primary

  the systems being specially adapted for transferring two or more command signals, e.g. railway systems (B60T13/662 takes precedence) · CPC title

• B60T13/68

  by electrically-controlled valves {(B60T13/662 and B60T13/665 take precedence)} · CPC title

• B60T13/662

  characterised by specified functions of the control system components · CPC title