JPH0769200A - Wheel slip preventing device for train - Google Patents

Abstract

PURPOSE:To provide a novel wheel slip preventing device for a train which is equipped with a relaying device for calculation-processing the signal of each vehicle, on each vehicle and controls the whole train by one controller on the basis of the signal supplied from the relaying device and can correctly grasp the behavior of the vehicle by collecting the information of a plurality of vehicles to one controller and realize the wheel slip preventing control with high precision. CONSTITUTION:A wheel slip preventing device for a train consisting of the connection of at least two vehicles is equipped with a relaying device 6 which is installed on each vehicle, calculation-processes the wheel speed of each vehicle and executes the fail-safe check of each vehicle and a controller 7 which calculates the brake power of the whole train on the basis of the signals supplied from a plurality of relaying devices and controls a brake device through the relaying device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train wheel slip prevention device represented by a railway, and more particularly to a train wheel slip prevention device suitable for a railway vehicle which employs line control called a central control system. It is a thing.

[0002]

2. Description of the Related Art Various types of devices have been developed up to now as a device for preventing wheel slippage in vehicles, especially railway cars.
There is one described in Japanese Patent Laid-Open No. 50. This device is shown in FIG.
As shown in, a wheel speed sensor 102 provided on all axes of the wheel 101, and a controller (electronic control device) that controls the braking force based on signals from these wheel speed sensors.
106, a brake actuator 103, a brake device 104, an anti-skid valve 105, and the like. Using the wheel speed signal, the anti-skid valve 105 is controlled by the controller 106 to retain or loosen the braking force of the sliding wheel. It is designed to prevent wheel sliding.

[0003]

However, in the above-mentioned device, since the wheel control of the entire train is performed by one controller 106 based on the information from the wheel speed sensor 102 for each wheel, each wheel speed is controlled. It is necessary to connect each of various components such as the sensor 102 and the controller 106 with an independent communication cable 107 to lead them between the respective vehicles. Further, one controller can perform a calculation process of signals related to the entire vehicle. Since this process requires a large amount of information to be handled, it is difficult to control wheels with high accuracy.

In order to solve the above-mentioned problems, it has been proposed that a controller 106 is provided for each vehicle as shown in FIG. 8 and the wheels are independently controlled for each vehicle. In that case, it is not possible to obtain information about the front and rear vehicles, and it is not possible to perform optimum brake control for the entire train. Further, since it is necessary to provide the controller 106 for each vehicle, the components cannot be shared, and the price of the control device itself becomes expensive.

Therefore, in order to solve the above-mentioned problems, the present invention provides a repeater for calculating the signal of each vehicle for each vehicle, and the whole train is controlled by one controller based on the signal from the repeater. We propose a new wheel slip prevention device for trains that controls the vehicle. In this train wheel slip prevention device,
By collecting the information of a plurality of vehicles in one controller, the behavior of the vehicles can be more accurately captured, and highly accurate wheel slip prevention control can be realized. This also reduces the number of communication cables,
It also improves connectivity when connecting vehicles.

[0006]

Therefore, the present invention is a wheel slip prevention device for a train in which two or more vehicles are connected, and the device is provided for each vehicle and the wheels for each vehicle are provided. A repeater that calculates the speed and performs a fail-safe check for each vehicle, and calculates the braking force of the entire train based on the signals from these multiple repeaters, and controls the brake device via the repeater. It is characterized in that it is provided with a single controller, which is a means for solving the problem.

[0007]

The speed of each wheel of each vehicle is detected by the wheel speed sensor during operation of the brake, and the wheel speed of each wheel is calculated based on this speed by a repeater provided for each vehicle. Output to the controller. The controller executes a predetermined calculation process based on a signal from the repeater 6 provided for each vehicle, and outputs a command for controlling the braking force of the entire train. In this way, by collecting the information of a plurality of vehicles in one controller, the behavior of the vehicle can be more accurately captured, and highly accurate wheel slip prevention control can be realized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A train wheel slip prevention device according to the present invention will be described in detail below with reference to the drawings. By the way, the present invention is characterized in that a control method called a central control method, out of the line control for determining a communication partner, is applied to prevent the train from sliding. As is well known, line control includes a contention system and a central control system (transistor technology, 1992).
November issue, page 273), the central control system is that a plurality of slave stations (secondary stations) are branched and connected under one control station (primary station), and the central control station receives signals from the slave stations. It is a method of controlling transmission and reception based on the original. In this method, if there is no instruction from the control station from the slave station, transmission and reception cannot be done,
The priority order is also managed by the control station.

Specifically, the control station sequentially makes an inquiry to the subordinate stations on the same line as to the presence or absence of transmission data, and the subordinate station that has received the inquiry returns the presence or absence of the data to the control station. On the other hand, when sending data from a control station to a slave station, the slave station to which the data should be sent makes an inquiry about reception preparation, and if the selected station can receive the data, the control station transmits the data. Be seen. The present invention applies the control according to the central control method as described above to a train wheel slip prevention device.

FIG. 1 is a schematic configuration diagram of an embodiment of a train wheel slip prevention device according to the present invention, which is a diagram in which two of a plurality of connected vehicles are taken out. In the figure, each vehicle is equipped with a wheel 1, a wheel speed sensor 2, a brake actuator 3, which are provided in a conventional vehicle.
A slip prevention valve 5 including a brake device 4, a hold valve and a decay valve is provided, and in addition to this, in the present embodiment, a relay device 6 for calculating the wheel speed of each vehicle is provided for each vehicle. The repeater 6 is connected by a communication cable 8 to one controller 7 that controls the entire train. The controller 7 is provided in an appropriate one of the trains.

Next, the division of roles of the repeater and the controller in the calculation will be described. First, the role of the relay 6 will be described. FIG. 2 is a block diagram of the relay 6. The relay 6 calculates a wheel speed based on a signal from the wheel speed sensor 2 and outputs the wheel speed to a controller. And a function of controlling the skid prevention valve 5 according to a command from the controller and a fail-safe function. That is, the repeater 6 wave-shapes the sine wave output from the wheel speed sensor 2 by the wave shaping 6a.
Is processed into a square wave and input to the speed calculator 6b, and the wheel speed is calculated by the speed calculator 6b and output to the controller 7 described later. In addition, in response to a command from the controller 7, the skid prevention valve 5 is controlled via the control means 6c in the repeater 6.

As shown in FIG. 3, the anti-skid valve 5 controlled by the signal from the repeater 6 is composed of a hold valve 5a and a decay valve 5b, and when the wheel slip is detected during the brake operation. In response to a command from the controller 7, an open / close signal is output from the relay device 6 to the hold valve 5a and the decay valve 5b to open / close the skid prevention valve 5 to execute the braking force control. Further, in the case where the wheel speed sensor, the brake actuator, or the like has some degree or more, the wheel slip prevention control is immediately stopped even if the slip prevention control command is issued from the controller. In this way, the repeater 6 also constantly performs a fail-safe check.

Next, the role of the controller will be described. FIG. 4 is a block diagram of the controller 7. The controller 7 executes a predetermined calculation process based on a signal from the repeater 6 provided for each vehicle, and issues a command for controlling the braking force of the entire train. It has a function to output. That is, the controller 7 sequentially takes in the signals output from the repeater 6 provided for each vehicle, selects the maximum speed from those signals, that is, all wheel speeds, and filters the speeds. . The filtering process is performed with the acceleration / deceleration as a reference (1.1 G) as shown in FIG. 5, and the vehicle speed is output. The vehicle speed obtained here is input to the control logic circuit 7a, the slip ratio and the like are calculated, and commands for pressurizing, depressurizing and holding the antiskid valve are issued for each vehicle based on the signal from this. . The anti-skid valve control command output from the controller 7 is transmitted to the relay device 6, and the relay device 6 executes the control of the anti-skid valve in the mode instructed by the controller.

FIG. 6 shows another embodiment according to the present invention. In this embodiment, the slip prevention control is performed by one controller as in the case of the above embodiment, but a repeater 6 is provided for each wheel of each vehicle, and a dedicated repeater is provided for each anti-skid valve 5. It is different from the above embodiment in that By doing so, it is possible to use a repeater having a relatively small calculation processing capacity, and it is possible to reduce the cost.

Since the present invention is constituted as described above, when the brake is applied while the train is running, the speed of each wheel of each vehicle is detected by the wheel speed sensor and each vehicle is based on this speed. The wheel speed for each wheel is calculated by the relay device provided in the and the result is output to one controller. The controller executes a predetermined calculation process based on the calculation result from the repeater 6 provided for each vehicle, and outputs a command for controlling the braking force of the entire train. Therefore, in this train wheel slip prevention device, by collecting the information of a plurality of vehicles in one controller, it is possible to more accurately capture the behavior of the vehicle and realize highly accurate wheel slip prevention control.

[0016]

As described in detail above, according to the present invention, since the repeater performs the processing such as wheel speed calculation for each wheel, the burden on the controller is lightened even when the number of train cars increases. In addition, since information is exchanged between the controller and the repeater by communication, it is not necessary to increase the number of pull-through lines between vehicles even if the number of vehicles increases. However, since the command from the controller can be used as it is, it is possible to flexibly respond to the change of the brake device. Moreover, the number of communication cables can be reduced, and the connectivity at the time of vehicle connection is also improved. Furthermore, since fail-safe measures are also incorporated, excellent effects such as excellent safety can be achieved.

[Brief description of drawings]

FIG. 1 is a first embodiment of a train wheel slip prevention device according to the present invention.
It is a schematic structure figure as an example.

FIG. 2 is a block diagram of a repeater.

FIG. 3 is an explanatory diagram of a relationship between a repeater and a skid prevention valve.

FIG. 4 is a block diagram of a controller.

FIG. 5 is an explanatory graph of filter processing.

FIG. 6 is a schematic configuration diagram as another embodiment of the train wheel slip prevention device according to the present invention.

FIG. 7 is a schematic configuration diagram of a conventional wheel slip prevention device.

FIG. 8 is a schematic configuration diagram of another conventional wheel slip prevention device.

[Explanation of symbols]

 1 Wheel 2 Wheel Speed Sensor 3 Brake Actuator 4 Brake Device 5 Antiskid Valve 6 Repeater 7 Controller 8 Communication Cable

Claims (3)

[Claims] 1. A train wheel slip prevention device in which two or more vehicles are connected to each other, wherein the device is provided for each vehicle to calculate a wheel speed for each vehicle and to perform a fail for each vehicle. A repeater 6 that performs a safe check and a controller 7 that calculates the braking force of the entire train based on signals from the plurality of repeaters and controls the brake device via the repeater are provided. A train wheel slip prevention device characterized in that 2. The fail-safe check stops the anti-skid control of the vehicle when an abnormality occurs in the brake device 3, 4, 5 for each vehicle that the repeater is responsible for. The train wheel slip prevention device described in. 3. The train wheel slip prevention device according to claim 1, wherein the repeater is provided for each wheel of each vehicle and each anti-slip valve 5.