KR100411723B1 - Door control apparatus for energy saving - Google Patents

Abstract

The present invention relates to a device for controlling a door for a railroad car, comprising: a user interface including a switch for generating a door open request signal; A control unit for outputting a door opening / closing control signal according to a door control command signal transmitted from a main control room when the door request signal is received; A logic circuit unit for logically multiplying a mode selection signal and the door opening / closing control signal transmitted from the main control room with the door control command signal; And an output unit for outputting a driving signal to an actuator that detects an operation result of the logic circuit unit and opens and closes the door. Thus, the door may be opened only for a door having a passenger using the door.

Description

DOOR CONTROL APPARATUS FOR ENERGY SAVING}

The present invention relates to a device for controlling a plurality of doors, and more particularly to a device for selective control of the door according to the presence or absence of access.

In general, a plurality of railroad cars are connected to each other, and each vehicle is provided with a plurality of doors. The door control device mounted on and used in such a railway vehicle simultaneously controls the door in an open state according to the reception of the door open signal transmitted from the cab regardless of the presence or absence of the person. Will be converted.

In this case, since unnecessary door opening and closing control is made, unnecessary power loss occurs, and in addition, energy loss for maintaining cooling / heating of the railroad vehicle is caused by a decrease in cooling / heating efficiency during the cooling / heating operation.

Therefore, an object of the present invention is to provide a door control device that can prevent the unnecessary opening of the door to prevent power loss and maximize the energy efficiency.

Still another object of the present invention is to provide a door control device capable of centrally controlling all doors in a railroad vehicle or selectively controlling the doors according to the presence or absence of accessors.

1 is a block diagram of a door control device according to an embodiment of the present invention.

FIG. 2 is a detailed circuit diagram illustrating a connection state between the microcomputer 120, which is a control unit, and the user interface unit 110 of FIG. 1.

FIG. 3 is a detailed circuit diagram illustrating a connection state of the microcomputer 120, the command receiver 130, and the logic circuit 140 of FIG. 1.

4 is a detailed circuit diagram illustrating a connection state of the logic circuit unit 140 and the output unit 150 of FIG. 1.

5 is an operation control flowchart of the microcomputer 120 according to an embodiment of the present invention.

Door control device according to an aspect of the present invention for achieving the above object;

A user interface unit including a switch for generating a door opening request signal;

A control unit for outputting a door opening / closing control signal according to a door control command signal transmitted from a main control room when the door request signal is received;

A logic circuit unit for logically multiplying a mode selection signal and the door opening / closing control signal transmitted from the main control room with the door control command signal;

And an output unit for outputting a driving signal to an actuator that detects an operation result of the logic circuit unit and opens and closes the door.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

First, FIG. 1 is a block diagram of a door control apparatus according to an exemplary embodiment of the present invention, and FIG. 2 is a detailed circuit diagram illustrating a connection state of a microcomputer 120, which is a control unit, and a user interface unit 110 of FIG. 1. It is shown. 3 is a detailed circuit diagram illustrating a connection state of the microcomputer 120, the command receiver 130, and the logic circuit 140, which is a control unit in FIG. 1, and FIG. 4 is a logic circuit 140 and an output unit 150 of FIG. 1. ) Detailed circuit diagram showing the connection status of).

First, referring to FIG. 1, a door control device 100 according to an exemplary embodiment of the present invention is largely comprised of a user interface unit (I / F) 110, a control unit microcomputer 120, a command receiving unit 130, and a logic circuit unit 140. ) And an output unit 150.

As illustrated in FIG. 2, the user interface unit 110 includes two switches SW1 and SW2 required for a railroad vehicle user to request the door to be opened. The reason why the two switches SW1 and SW2 are provided in this way is to consider a railroad car user who gets on or off through the doorway. That is, the switch is mounted on the inside / outside wall for passing through the doorway, it is preferable that the switch mounted on the outside of the vehicle has a waterproof structure. On the other hand, one side of the contacts of the switches SW1 and SW2 is connected to the light emitting diode of the photocoupler whose cathode is grounded, and the light receiving transistor (ISO1) collector terminal of the photocoupler is connected to the P1 terminal of the microcomputer.

Therefore, when the user presses any of the switches SW1 and SW2 to request the door to be opened, the microcomputer 120 receives the door opening request signal of the "low" level. On the other hand, the user interface 110 is provided with light emitting diodes D2 and D3, and displays the door opening request state or the waiting state to the user under the control of the microcomputer 120. In the present invention, the standby state is a state in which there is no door opening request. At this time, the microcomputer 120 turns on the green light emitting diode D2 and requests the user to operate the switch when he / she wants to get off. If the switch is pressed, the microcomputer 120 may turn on the red light emitting diode D3 to recommend another user not to operate the switch unnecessarily. In the central control mode to be described later, the light emitting diodes D2 and D3 are both turned off to indicate the central control mode.

On the other hand, the microcomputer 120 controls the overall operation of the door control device 100 according to an embodiment of the present invention. To control the door, the microcomputer 120 outputs the door open / close control signal to the logic circuit unit 140 according to the door control command signal ① transmitted from the main control room 200 when the door open request signal is received. In the embodiment of the present invention, when the mode selection signal ② transmitted from the main control room 200 is the central control mode signal, the door is output from the logic circuit unit 140 because the operation power input to the microcomputer 120 is cut off. The opening and closing is controlled according to the signal. The door opening and closing control operation in the central control mode will be described later.

The command receiving unit 130 receives the door control command signal ① and the mode selection signal ② from the main control room 200 and transmits the received signal to the microcomputer 120 and the microcomputer 120 according to the mode selection signal. Block and control the operating power supplied to As shown in FIG. 3, the command receiver 130 is turned on and off according to the door control command signal ① received from the main control room 200, and is connected to the collector terminal of the light receiving transistor ISO2. A first photocoupler for supplying door control command signals having different levels to the microcomputer 120; A second photo coupler (ISO3) for selectively grounding the operating power source (Vcc) by turning on and off in accordance with a mode selection signal (2) received from the main control room (200); A light-emitting transistor (ISO4) connected to a light-emitting diode (ISO3) collector terminal of the second photocoupler and turned on and off according to whether the second photo coupler is grounded; Transistors Q2 having a base and an emitter grounded at the emitter terminal and the ground terminal of each of the transistors), and a relay connected to the collector terminal of the transistor Q2 and the collector terminal of the light receiving transistor ISO4. That is, the command receiving unit 130 includes a switching unit (composed of a relay and a transistor Q2) for cutting off the operation power supplied to the microcomputer 120 when the mode selection signal is the central control mode.

The logic circuit 140 outputs a logical product of the door opening / closing control signal output from the microcomputer 120 and the door control command signal ① input from the command receiving unit 130 or selects a mode input from the command receiving unit 130. A signal is multiplied by the door control command signal ① and output. As shown in FIG. 3, the logic circuit 140 includes a first logic element U1A having two inputs of one side of a pull-up resistor R6 having one side connected to the P5 terminal of the microcomputer 120. Wow; A second logic element U1B having two inputs of one side of a pull-up resistor R7 having one side connected to a light receiving transistor (ISO2) collector terminal of a first photo coupler, which is one component of the command receiver 130. Wow; A third logic unit U1C having two inputs of the outputs of the first logic unit U1A and the second logic unit U1B; A fourth logic element U1D having two inputs of the output of the second logic element U1B and the collector end of the light receiving transistor ISO3 of the second photo coupler; Pull-up resistors R9 and R10 connected to output terminals of the third and fourth logical sum elements U1C and U1D, respectively; Diodes D4 and D5 reversely connected to output terminals of the third and fourth logical sum elements U1C and U1D, respectively; And a fourth photo coupler ISO5 having a light emitting diode cathode side connected to the anodes of the diodes D4 and D5.

The output unit 150 outputs a driving signal to an actuator that opens and closes a door by detecting a calculation result of the logic circuit unit 140, that is, a turn-on and turn-off state of the light receiving transistor ISO5. As illustrated in FIG. 4, the output unit 150 includes a relay K1 and a transistor Q1 for operating in accordance with the calculation result of the logic circuit unit 140.

Hereinafter, the operation of the door control device having the above-described configuration and circuit will be described with reference to FIG. 5.

5 is a view for explaining the operation of the door control apparatus according to an embodiment of the present invention.

First, the door control apparatus according to the embodiment of the present invention operates in the central control mode and the user mode largely according to the mode selection signal output from the main control room 200. In the present invention, the "central control mode" refers to a mode for controlling the door by the control of the main control room 200, which is a concept relative to the user mode. The user mode is a mode that is set to prevent unnecessary power loss and is defined as a mode in which door control is performed by a user's selection to pass through the door. For reference, since the power supplied to the microcomputer 120 is cut off in the central control mode, only the command receiver 130 and the logic circuit 140 control the door opening and closing, and in the user mode, the microcomputer 120 is controlled. Since the operating power is supplied, the door opening and closing is controlled by the user interface 110, the microcomputer 120, and the logic circuit 140.

Hereinafter, the operation of the door control device will be described in detail with reference to FIG. 5. First, when the door control device is set to the central control mode in step 400, that is, the light emitting diode of the second photo coupler ISO3 is removed from the main control room 200. When the mode selection signal ② for lighting is output and the light receiving transistor ISO4 of the third photo coupler is turned on, the relay in the command receiving unit 130 is driven to cut off the operating power Vcc input to the microcomputer 120. Therefore, all of the light emitting diodes provided in the user interface 110 indicating the standby state are turned off, thereby displaying the central control mode to the outside (step 480).

In the central control mode, since the mode selection signal of the "low" level is input to the fourth logical sum element U1D of the logic circuit unit 140, the logic level of the door control command signal ① transmitted from the main control room 200 is input. Accordingly, the light receiving transistor ISO5 of the fourth photo coupler is turned on, so that the entrance door can be opened by driving the relay K1 of the output unit 150.

If the mode of the door control device is the user mode in step 400, that is, the mode selection signal is applied to the "low" level, when the light receiving transistor ISO3 of the second photo coupler is turned off, the microcomputer 120 transmits Vcc through P5A. The operating power is input. When the operating power is applied as described above, the microcomputer 120 checks whether there is a door opening request through the user interface 110 in step 410. As a result of the inspection, when the door open request signal of the "low" level is received at the P1 terminal, the microcomputer 120 proceeds to step 420 to light the door open request indicator and proceeds to step 430 to proceed to the door open command through the command receiving unit 130. Check for presence. As a result of the inspection, if the door open command is received, the microcomputer 120 outputs the door open control signal by grounding the P5 terminal in step 440.

Accordingly, in the third logic unit U1C, by grounding the cathode of the diode D4 at the "low" level, the light receiving transistor ISO5 of the fourth photo coupler is turned on, so that the relay K1 of the output unit 150 is driven. By doing so, the door can be opened.

Thereafter, the microcomputer 120 checks whether there is a door closing instruction through the P4 terminal in step 450. As a result of the inspection, if there is a door closing command (that is, the light receiving transistor ISO2 is turned off), the microcomputer 120 proceeds to step 460 to turn off the door opening request light that is lit and proceeds to step 470 to control the door closing control, which is a door opening / closing control signal. Output signal through P5 terminal. In this case, as the light receiving transistor ISO2 is turned off, the light receiving transistor ISO5 of the fourth photo coupler is also turned off so that the door is closed.

That is, in the user mode, the door is opened and closed in accordance with the door control command signal (①) transmitted from the main control room 200 only when there is a door request from the user, so that the door is unnecessarily in a situation where no passenger wants to use the door. By not opening the power loss can be prevented by that much, it is possible to increase the heating and cooling efficiency during the heating and cooling operation.

On the other hand, when the door open command is input again from the main control room 200 within a predetermined time after outputting the door closing control signal, the microcomputer 120 remembers the control state within a predetermined time and restarts the door even if there is no user's request for opening. You can also open it.

As described above, the present invention has an effect of minimizing power loss by preventing unnecessary opening of a door by providing a user mode in a railroad vehicle.

In addition, the present invention has the advantage of maximizing the cooling and heating effect because the door is prevented from opening unnecessarily when operating the heating and cooling device.

On the other hand, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (6)

delete delete delete A switch for generating a door open request signal; A control unit for outputting a door open / close control signal according to a door control command signal transmitted from a main control room when the door open request signal is received; A logic circuit unit for logically multiplying a mode selection signal and the door opening / closing control signal transmitted from the main control room with the door control command signal; An energy saving door control apparatus including an output unit for outputting an operation result of the logic circuit unit to an actuator for opening and closing the door, The logic circuit portion, A first logic element having two inputs of one side of a pull-up resistor connected to one side of the controller; A second logic element having two inputs of one side of a pull-up resistor having one side connected to the light receiving transistor collector of the first photo coupler operating on / off according to the door control command signal; A third logical sum element having two outputs of the first and second logic sum elements; A fourth logic element configured to have two inputs of a light receiving transistor collector stage of a second photo coupler and an output of the second logic element to selectively turn on / off an operation power source in response to the mode selection signal; Pull-up resistors connected to output terminals of the third and fourth logical sum elements, respectively; Diodes reversely connected to output terminals of the third and fourth logical sum elements, respectively; And a light emitting diode of a third photo coupler, the cathode of which is commonly connected to the anodes of the diodes. The energy saving door control device of claim 4, wherein the output unit comprises a relay for selectively generating an actuator driving signal according to a turn-on and turn-off operation of the light receiving transistor of the third photo coupler. The method of claim 4, further comprising a command receiving unit for blocking the operation power supplied to the control unit, the command receiving unit; A fourth photo coupler connected to the light receiving transistor collector terminal of the second photo coupler and turned on and off; And a relay connected between the phototransistor emitter and the collector of the fourth photo coupler to switch an operating power supply path supplied to the control unit in accordance with the turn-on and turn-off of the phototransistor. Control unit.