JP2002160635A - Control method for barrier bar stop position and its speed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control method for a barrier bar stop position and its speed capable of easily setting a barrier bar operation time and stop position without relying on an individual skill such as conventionally required adjustment of a cam switch. SOLUTION: In a barrier, a control part 3 controls a drive current of a motor 1 so as to move the barrier bar 2 up and down in time set by a switch of a setting part 8 and stop the barrier bar at a stop position set by the switch of the setting part 8 based on information from the setting part 8 including the switch capable of setting a moving-down time, a moving-up time, a moving- down stop position and a moving-up stop position of the barrier bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a stop position and a speed of a railroad crossing rod provided for blocking a railroad crossing on a railway.

[0002]

2. Description of the Related Art A level crossing breaker always receives a signal from a level crossing control device to raise a breaking rod. As a result, the motor is rotated by a fixed torque force inherent to the motor, the breaking rod is raised, and it is detected that the rising point is reached by the cam provided on the operating axis of the breaking rod, and the driving of the motor is stopped. Apply the brakes and stop there. This state is a state where the railroad crossing is open. When the train approaches, there is no signal from the railroad crossing control device to raise the cut-off rod. Detecting that the lowering point has been reached by a different cam from the raising point provided on the operating axis of the rod, the motor is stopped, and the breaking rod is stopped at that position by the brake. When the train passes the railroad crossing and receives a signal to raise the blocking rod from the railroad crossing control device, the train enters the raising operation. This is repeated by the arrival and departure of the train.

[0003] As described above, a conventional level crossing circuit breaker employs a cam switch that detects a rising point and a descending point based on a position of a cam provided on an operation axis of a breaking rod. For this reason, the cam switch had to be adjusted to set the stop position of the breaking rod after the breaking machine was installed at the level crossing.

[0004]

The work of setting the stop position by the cam switch requires a skillful skill, so that individual differences are likely to occur. For this reason, the stop position is different at each railroad crossing, and the operation time depends on the stop position. In addition, the time from when the breaking rod starts to move until it stops will differ for each breaking machine, especially during descent control, the time to complete the breaking is preferably within a fixed time in relation to the approach time of the train However, there are dislikes that cannot be set accurately. Further, since the torque of the motor of the circuit breaker is constant, the operation time is not constant because the operation time is also affected by strong winds and the like, and the rise and fall times fluctuate, which is not preferable.

Accordingly, the present invention solves the above-mentioned conventional problems, and does not depend on personal skills such as adjustment of a cam switch, which has been required so far, and can simplify the operation time and stop position of the breaking rod. It is an object of the present invention to provide a control method of a stop position and a speed of a railroad crossing rod which can be set to a stop position.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a level crossing breaker having a switch having a switch capable of setting a descent time and a descent time, a descent stop position and a descent stop position of a breaking rod. The drive current of the motor is controlled such that the breaking rod moves up and down and stops at the stop position for the time set by the control unit using the switch of the setting unit, based on information from the unit.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an overall configuration of a level crossing circuit breaker. Reference numeral 1 denotes a motor that moves up and down a breaking rod 2, which is controlled by a driving current from a control unit 3 so as to rotate or maintain a stopped state. The control unit 3 inputs a control signal (whether or not to raise) from a railroad crossing control device (not shown), three-phase current value information from the current detector 4 and rotational position information of the motor 1, and outputs a rise / fall drive current. The target function is executed by control logic data and program logic internally including generation and output, detection of presence / absence of disturbance during rising / falling, operation logic at the time of detection of disturbance, and the like. The current detector 4 always detects the current to the motor 1 via the current clamp 6. The information is always input to the control unit 3. Reference numeral 5 denotes a power supply voltage detector which detects that the power supply has dropped below a certain threshold value and has recovered to a rated voltage, and inputs the information to the control unit 3. 8 is a setting unit connected to the control unit 3,
Reference numeral 9 denotes a setting panel provided in the setting unit 8. As shown in FIG. 2, switches 11 and 12 for setting an operation time value and switches 14 and 15 for finely adjusting a stop position are provided. That is, the switch 11 sets the rise time, and the switch 12 sets the fall time. The switch 14 finely adjusts the ascending stop position, and the switch 15 finely adjusts the descending stop position.

[0008] The control unit 3 is provided with the shut-off rod 2 from the
And generates a three-phase drive current that generates the rotation direction of the motor 1 corresponding to the rise and fall. The drive current is controlled so that the motor 1 is stopped there when reaching the ascending point / descending point according to the position information obtained from the motor 1. On the other hand, the drive current to the motor 1 is picked up by the clamp 6 and input to the current detector 4 and input to the control unit 3 as current value information. The control unit 3 controls the motor 1 while monitoring the presence or absence of interference from the current value from the current detector 4 during the operation of the motor. When reaching the ascent or descent without obstruction, stop at that point. If it is determined that the obstruction occurs during the control of raising and lowering the blocking rod 2, the control is performed so as to temporarily lower when ascending and to ascend once when lowering. Further, when the motor drive output from the control unit 3 disappears, the breaking rod 2 descends by its own weight as in the related art.

On the setting panel 9, the rotational speed of the motor 1 is determined from the values of the switches 14 and 15 for finely adjusting the stop position and the values of the switches 11 and 12 for setting the operation time. During this time, a difference from a set value of the rotation speed due to the influence of wind or the like is detected, and the drive current of the motor 1 is controlled so as to increase or decrease the torque of the motor 1. In addition, when the up / down stop points are reached, other drive currents are controlled so as to cancel the change in the position information so as to stay at that position.

In the example shown here, the operation time is selected by the rotary switches 11 and 12, and the stop position is designated by looking at the position where the cut-off rod 2 has stopped and by the switches 14 and
The stop position is finely adjusted in step 15, but the form of the switch should be one that can confirm the value to be input and its result, such as numeric keypad operation and digital display, volume operation and numeric display. Needless to say, it is good. The information set by the switches 11, 12 or 14, 15 is sent to the control unit 3 and stored therein. The control unit 3 creates an operation pattern of the motor 1 based on the set operation time and stop position, controls the drive current of the motor 1 accordingly, and controls the rotation and stop of the breaking rod 2.

In FIG. 2, the operation time is set by a switch.
11 and 12 enable the rise and fall times to be adjusted to the desired position. The stop position is set by moving the switches 14 and 15 down to slightly move the breaking rod 2 in a specified direction (up or down).
It is made possible by operating to an arbitrary set position.

[0012]

According to the present invention, as described above, in a level crossing circuit breaker, a descent time and a rise time of a breaking rod, a descent stop position, and information from a setting unit having a switch capable of setting a descent stop position are obtained by using information from a setting unit. The control unit controls the motor's drive current so that the breaking rod moves up and down and stops according to the stop position for the time set by the switch on the setting unit. It is simplified, and the adjustment of the cam switch, which has been required so far, is eliminated, and does not depend on the skill of the individual, and the predetermined stop position and the operation time of the breaking rod can be set. Moreover,
It is possible to save labor for the adjustment, and since the setting is performed by the switch of the setting unit, it is possible to expect excellent effects such as visualization of the operation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a level crossing breaker according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a setting panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Breaking rod 3 Control part 4 Current detector 5 Power supply voltage detector 6 Current clamp 8 Setting part 9 Setting panel 11, 12 Switch for setting operation time value 14, 15 Switch for fine adjustment of stop position

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirokazu Kitajima 2-2-2 Yoyogi, Shibuya-ku, Tokyo Inside East Japan Railway Company (72) Inventor Isamu Suzuki 2-20-2 Nakaikegami, Ota-ku, Tokyo Daido Signal Co., Ltd. (72) Inventor Tsutomu Shiomi 2-20-2 Nakaikegami, Ota-ku, Tokyo Daido Signal Co., Ltd.

Claims (1)

[Claims] In a level crossing circuit breaker, a control unit is set by a switch of the setting unit based on information from a setting unit having a switch capable of setting a descent time and a rising time of a breaking rod, a descent stop position and a descent stop position. A method of controlling a stop position and a speed of a railroad crossing cutoff rod, wherein the drive current of the motor is controlled so that the cutoff rod moves up and down and stops at the stop position according to the stop time.