Turnout control circuit and turnout control system

Abstract

The invention provides a turnout control circuit and a turnout control system. The turnout control circuit comprises a switching circuit which is used for controlling a switching motor to complete turnout positioning and reverse position removal or reverse position and positioning removal operation, a locking circuit which is used for controlling a locking motor to unlock or lock a turnout, a representing circuit which is used for generating a signal representing the position of the turnout, and an automatic opening and closing device which comprises a plurality of rows of contacts, each row of contacts is arranged in one of the switching circuit, the locking circuit and the representing circuit, and the automatic opening and closing device is connected with the turnout and controls conduction of each row of contacts in response to the switching position and / or the locking state of the turnout, so that the switching circuit, the locking circuit and the representing circuit are connected or disconnected. According to the turnout control circuit and the turnout control system, interaction nodes of all module circuits are reduced, control logic is clearer and simpler, the automatic opening and closing device is used for replacing travel switches, and cost is reduced compared with the situation that the travel switches are installed at all positions.

Description

technical field [0001] The invention relates to the technical field of turnout switching control, in particular to a turnout control circuit and a turnout control system. Background technique [0002] With the increasing demand for rail transit in major cities, rail transit systems such as subways, light rails, straddle monorails, and rubber-tyred trams have gradually appeared in the public's field of vision and become the preferred means of transportation for travel. Among them, the medium and low-volume traffic systems such as straddle monorail and rubber-tyred tram have the advantages of low cost, short construction period, and small footprint. The construction needs of various cities are increasing day by day. Different from traditional large railways and subways, the medium and low-volume transportation system pays more attention to the lightweight and intelligentization of system equipment. [0003] The turnout system is a line connection device that enables rolling s...

AI Technical Summary

Problems solved by technology

[0005] 1. The position of the turnout depends on the limit baffle on the turnout touching the limit switch to trigger the output signal of the contact closure of the limit switch. This method relies on mechanical collision, which will cause great damage to the equipment and will affect the equipment after long-term wear. Accuracy; and, because the limit switch is installed outdoors without any protective measures, it is easily affected by external factors, such as human error, falling objects, etc.

[0006] 2. When the turnout performs unlocking and locking actions, the limit switch first needs to send the position information to the turnout control system. After the turnout system handles it, the locking circuit controls the locking motor to execute. This method needs to be set at each position Travel switch, the logic is more cumbersome, the circuit design is more complicated; moreover, there are many wiring harnesses in actual engineering applications, equipment installation and maintenance are difficult, and the cost is high;

[0007] Third, it is not conducive to the development of rail transit intelligence, informatization and lightweight

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