A method to solve false alarm at crossing caused by magnetic sensor

Abstract

The invention relates to a method for solving crossing false alarming caused by magnetic electrical sensors. The method adopts a device comprising a control side circuit and an executing side circuit.The executing side circuit is provided with the two magnetic electrical sensors, the control side circuit comprises an alarming host and two relays, and the two relays are mutually connected in parallel and then connected with the alarming host. One of the relays is controlled by one of the magnetic electrical sensors, and the other relay is controlled by the other magnetic electrical sensor. When one of the two magnetic electrical sensors starts approach control equipment to break off output of a control power source due to the fact that a train set cuts magnetic steel magnetic force lines at a low speed or in braking and thus outage occurs, the other magnetic electrical sensor controls the relays to communicate. According to the method for solving crossing false alarming caused by the magnetic electrical sensors, the condition of crossing false alarming can be prevented.

Description

technical field [0001] The invention relates to the technical field of crossing alarms, in particular to a method for solving false crossing alarms caused by magnetoelectric sensors. Background technique [0002] Since January 2010, in order to implement the "low cost, high efficiency" business strategy, the logistics department of Ningbo Iron and Steel Co., Ltd. has adopted the automatic signal control method of point-type crossings with magnetoelectric sensors. Three railway level crossings on the road were transformed with automatic alarm technology, and the original guarded crossings were changed to unguarded crossings. The crossing approach alarm control adopts magnetoelectric sensor equipment. When the shunting train runs above the reverse magnetoelectric sensor, it often starts false alarms at the crossing, which seriously affects the safe operation of the crossing. [0003] The existing crossing automatic alarm system working procedures, such as figure 1 As shown, ...

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Problems solved by technology

[0005] The inventors of the present invention have found that the automatic signal control equipment for point-type crossings with magnetoelectric sensors has the following defects: the approach control equipment has certain requirements on the speed of the vehicle. During the braking operation above the magnetic sensor, the proximity controller cannot distinguish the running direction of the train, and will cut off the proximity control voltage and start a false alarm

[0006] The currently commonly used method is to strengthen the management and control of the shunting operation method, minimize the low-speed passing above the magnetic sensor and prohibit the vehicles from braking above the magnetic sensor. Because the shunting operation method is complicated, it is difficult to standardize the operation behavior, or often The problem of false alarms cannot be completely solved in essence.

In addition, national railways and local factory and mining enterprise railways use the open signal and the occupation of close track circuits to participate in crossing interlock alarm control and identify the running direction of trains. The premise of this method is that the crossing layout must conform to the "three-stage" automatic alarm crossing Conditions, that is, the two sides are close to the warning section + crossing section and close to the signal point, otherwise the technical transformation cannot be carried out in this way

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