Signal control cabinet device of rail transit control center

Abstract

The utility model provides a signal control cabinet device of a rail transit control center, which comprises a power supply control module, a charging module and a rectifying module, an air switch; the relay module comprises a contactor and a relay, and the relay is connected with an O1 interface of the PLC; the output switching module comprises a rectification voltage sensor; the lead-acid storage battery pack comprises a plurality of lead-acid storage batteries, a storage battery voltage sensor and a plurality of temperature sensors; a PLC; the touch screen is connected with the O2 output port of the PLC, the temperature of the lead-acid storage battery is tested through the temperature sensor, the output port of the PLC is locked after three times of continuous switching, only supplies power to an important load, and displays the number of the battery with overhigh temperature, so that the acid liquor of the storage battery is prevented from leaking, and maintenance personnel can be reminded to replace the battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit control equipment, in particular to a rail transit control center signal control cabinet device. BACKGROUND

[0002] Rail transit signal control cabinet is an integrated control device for controlling air conditioning unit, lighting, network and power supply control equipment, after main power cut-off, passenger car load is automatically switched to standby power supply, load includes emergency load and important load, emergency load is mainly emergency light, tail lamp socket, important load is mainly antiskid device, axle temperature alarm, PLC and each sensor.

[0003] Standby power supply is generally lead-acid storage battery group, battery group full power supply for emergency load and important load at the same time, voltage deficiency PLC will cut off the power supply of emergency load, only important load power supply;

[0004] But the current lead-acid storage battery group often exists overcharge or overdischarge, performance is fast charging speed but short discharging time, battery group voltage reduction, PLC cuts off emergency load, current is small, storage battery voltage restores, so repeatedly, easy to cause component damage;

[0005] Prior art increases counter in PLC output circuit conversion signal output point, locks the output state of this mouth, terminates the power supply to emergency load, although the damage of contactor, relay and other electronic components is avoided, but maintenance personnel cannot know the condition of storage battery and which battery in battery group appears overcharge or overdischarge. SUMMARY

[0006] The utility model discloses a rail transit control center signal control cabinet device to remind maintenance personnel lead-acid storage battery damage and prompt the position of specific battery replacement.

[0007] The utility model discloses a rail transit control center signal control cabinet device, including:

[0008] Power supply control module, including charging module and rectifier module;

[0009] Air switch;

[0010] Relay module, including contactor and relay, wherein the relay is connected with the O1 interface of PLC;

[0011] Output switching module, including rectifier voltage sensor;

[0012] Lead-acid storage battery group, including a plurality of lead-acid storage batteries, storage battery voltage sensor and a plurality of temperature sensors;

[0013] PLC;

[0014] Touch screen, with PLC O2 output port connection.

[0015] Further, the electric appliance module in the normal work of AC power supply main circuit, relay coil power, the relay normally open contact closure makes the contactor coil power, contactor normally open contact closure, normally closed contact open.

[0016] Further, the output switching module includes a rectified voltage sensor, when the rectified voltage is zero, PLC O1 output port state is OFF, the relay coil power loss, its normally open contact open, contactor coil power loss, contactor normally open contact open, normally closed contact closed, emergency load automatic switching, by the battery through the air switch to the emergency load power supply.

[0017] Further, when the battery voltage decreases, PLC will switch O1 output port state to ON, cut off the emergency load power supply.

[0018] Further, the O1 state of PLC O1 output port state switching more than three times is locked as ON.

[0019] Further, the touch screen displays the lead-acid battery number after the O1 state of PLC is locked as ON.

[0020] The beneficial effects obtained by the above structure of the present application are as follows:

[0021] The present application tests the temperature of the lead-acid battery through the temperature sensor, and the output port of the PLC is locked after three times of continuous state switching, only for important load power supply, and displays the battery number with too high temperature, which not only prevents the acid liquid leakage of the battery, but also reminds the maintenance personnel to replace the battery. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The control principle diagram of the present application;

[0023] Figure 2 The control logic diagram of the present application.

[0024] 1, power supply control module; 101, charging module; 102, rectifier module; 2, air switch; 3, relay module; 301, contactor; 302, relay; 4, output switching module; 401, rectified voltage sensor; 5, lead-acid battery pack; 501, lead-acid battery; 502, battery voltage sensor; 503, temperature sensor; 6, PLC; 7, touch screen. DETAILED DESCRIPTION

[0025] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of the utility model protection.

[0026] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0027] In order to make the content of the utility model more easily understood clearly, the technical scheme in the embodiments of the utility model will be clearly and completely described with reference to the drawings in the embodiments of the utility model.

[0028] As shown in the figure, the utility model provides a rail transit control center signal control cabinet device, including power control module 1, air switch 2, relay module 3, output switching module 4, lead-acid battery group 5, PLC 6 and touch screen 7.

[0029] Power control module 1 includes charging module 101 and rectifier module 102.

[0030] Relay module 3 includes contactor 301 and relay 302, and relay 302 is connected with O1 interface of PLC 6;

[0031] The main circuit of alternating current power supply works normally, and the coil of relay 302 is powered, so that the normally open contact of contactor 302 is closed to make the coil of contactor 302 powered, and the normally open contact of contactor 302 is closed and the normally closed contact is opened, and the power supply of emergency load is provided by the rectifier module.

[0032] Output switching module 4 includes rectifier voltage sensor 401, and when the rectifier output voltage measured by rectifier voltage sensor 401 is zero, the O1 output port state of PLC 6 is OFF, the coil of relay 302 loses power, and the normally open contact is opened to make the coil of contactor 301 lose power, and the normally open contact of contactor 301 is opened and the normally closed contact is closed, and the emergency load is automatically switched, and the power supply of emergency load is provided by the battery through air switch 2 and the normally closed contact of contactor 302;

[0033] Lead-acid battery group 5 includes a plurality of lead-acid batteries 501, battery voltage sensor 502 and a plurality of temperature sensors 503;

[0034] When the battery is discharged for a period of time, the battery voltage sensor 502 measures the voltage drop, the O1 output port state of the PLC 6 switches to ON, cutting off the emergency load power supply, only to the important load power supply, the discharge current decreases, the voltage rises;

[0035] When the lead-acid battery 501 has overcharge or overdischarge problem, the emergency load power supply is cut off, the current decreases, the voltage is immediately restored under the action of the internal undervoltage protection circuit of the battery, the O1 output port state switches to OFF again, when the emergency load is connected, the voltage immediately drops again, the O1 output port state switches to ON again, the electrical components are frequently converted between power-on and power-off, when the O1 output port state switches more than three times, the O1 state is locked to ON;

[0036] The overcharged or overdischarged lead-acid battery 501 generates heat during discharging, and the temperature sensor 503 can measure that the temperature of a certain lead-acid battery 501 is too high.

[0037] The touch screen 7 and the O2 output port of the PLC 6 are connected, after the O1 state is locked to ON, the temperature sensor 503 measures that the temperature of a certain lead-acid battery 501 is too high, and the number of the lead-acid battery 501 that needs to be replaced is displayed on the touch screen 7.

[0038] The above only describes the preferred embodiment of the utility model patent, and does not limit the utility model patent, any modification, equivalent replacement and improvement within the spirit and principle of the utility model patent should be included in the protection scope of the utility model patent.

Claims

1. A signal control cabinet device for a rail transit control center, characterized in that, It includes a power control module (1), a charging module (101), and a rectifier module (102). Air switch (2); The relay module (3) includes a contactor (301) and a relay (302), wherein the relay (302) is connected to the O1 output port of the PLC (6); The output switching module (4) includes a rectified voltage sensor (401). The lead-acid battery pack (5) includes several lead-acid batteries (501), a battery voltage sensor (502), and several temperature sensors (503). PLC (6); The touch screen (7) is connected to the O2 output port of the PLC (6).

2. The signal control cabinet device for a rail transit control center according to claim 1, characterized in that, When the AC power supply main circuit is working normally, the coil of the relay (302) is energized, the normally open contact of the relay (302) is closed, which energizes the coil of the contactor (301), and the normally open contact of the contactor (301) is closed and the normally closed contact is open.

3. The signal control cabinet device for a rail transit control center according to claim 1, characterized in that, The output switching module (4) includes a rectifier voltage sensor (401). When the rectified voltage is zero, the O1 output port of the PLC (6) is OFF, the relay (302) coil is de-energized, its normally open contact is open, the contactor (301) coil is de-energized, the normally open contact of the contactor (301) is open and the normally closed contact is closed, the emergency load is automatically switched, and the battery pack (5) supplies power to the emergency load through the air switch (2).

4. The signal control cabinet device for a rail transit control center according to claim 1, characterized in that, When the battery voltage drops, PLC (6) switches the O1 output port to ON to cut off the power supply to the emergency load.

5. A signal control cabinet device for a rail transit control center according to claim 1, characterized in that, After the O1 output port of PLC (6) switches its state more than three times, the O1 state is locked to ON.

6. A signal control cabinet device for a rail transit control center according to claim 1, characterized in that, The touch screen (7) displays the lead-acid battery (501) number after the O1 output port of the PLC (6) is locked to ON.

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