KR20050111854A - A contact - free type door control system with proximity switch - Google Patents

Abstract

The present invention provides a proximity sensor and a semiconductor switching element relay (SSR: Solid State) for easy, quick, accurate and safe detection of the operation state of the door device used in electric vehicles, elevators, platform screen doors (PSDs) and automatic doors for buildings. Non-contact door detection control system using a relay).

The present invention relates to a method of improving the opening and closing of a conventional door device in a non-contact method using a proximity sensor and a semiconductor switching device in a manner in which electrical contacts are formed by a mechanical push rod.

By constructing a circuit using a proximity sensor and a semiconductor switching element, the dead zone is minimized and the operating conditions are sensed on the left and right doors of the door of the train, so that a failure of one side of the door device can be recognized. If the material is between the doors, it is possible to prevent the start of the electric vehicle to prevent large safety accidents.

Description

Non-contact door detection control system using proximity sensor {A Contact-Free Type Door Control System with Proximity Switch}

The present invention relates to a door opening and closing detection device that can detect whether the door of the electric vehicle door opening and closing.

In general, a device for recognizing the opening and closing of an electric vehicle door used in an electric vehicle is mechanically fixed to the electric vehicle entrance door or the electric vehicle itself, and recognizes whether the door is opened or closed by a mechanically linked method. .

Referring to Figures 1 to 3 as an embodiment of the prior art performed by the mechanical switch system whether the recognition of the electric vehicle door as described above are as follows.

As the door is opened and closed, the door is opened or closed by a door switch 7 formed at one side of the door.

In the conventional method of opening and closing a door of an electric vehicle, a door engine part is formed at the upper side of the door to control the opening / closing of the door. As the door engine provides driving force to one of the left and right doors, The rest of the door has a configuration that moves in conjunction.

The door engine 1 may be variously configured in an electric vehicle driving system.

Here, the door is opened and closed by moving the piston in the driving cylinder shown in FIG. 2 back and forth, and the door for opening and closing the door that can be moved in conjunction with both side doors even when only one side is driven by connecting a means such as a belt or a chain. It consists of the engine 1.

Therefore, by configuring a mechanical switch on any one (right or left) door of the conventional electric vehicle, the open / close of the door is sensed.

When the door switch 7 is described in detail, as shown in FIG. 1, as the terminal is configured and the door is opened and closed, the door switch push rod 2 formed on one side of the door is advanced back and forth, and thus the door connecting rod 8 is Each terminal and the switching is made inside the door switch 7 while moving forward and backward.

The door connecting rod (8) provides the switch stage of the cab indicator light, the vehicle side light, the cab door reopening and closing circuit while advancing back and forth by the door switch push bar (2), and the switch end is integrally connected to the door connecting rod and interlocked. Has a switching configuration.

Referring to the operation of the conventional invention having such a configuration as follows.

As the door of the electric vehicle opens and closes, the door switch pressure bar 2 formed on one side of the door contacts the door switch 7 and is spaced apart to switch the terminal inside the door switch 7 to open or close the door. Detect.

Referring to FIG. 1 or FIG. 2, the operation of closing the electric vehicle door is made by contacting the door connecting rod 8 of the door switch 7 with the door switch pressing bar 2 formed at the upper side of the door while the door is closed. As 8) enters inward, switching between the contact terminals 9a, 9b and 9c associated with the switch terminals 10a, 10b and 10c in the door switch 7 is formed.

That is, the cab door re-opening circuit that has been switched on and the off-vehicle side light are switched off, and the cab display lamp that has been switched off is switched on.

In the electric vehicle driving system shown in FIG. 1 according to the switching, the cab indicator light ON indicating the opening and closing of the door is turned ON, and the vehicle side light OFF is formed outside the electric vehicle to indicate the opening and closing of the door. When the door is not properly closed, the door of the cab door reopening and closing circuit (OFF) for the re-opening is made to indicate the closing of the electric vehicle door.

In the opening operation of the electric vehicle door illustrated in FIG. 1 or 3, the door switch pressing bar 2 formed at the upper side of the door while the door is opened is spaced apart from the door connecting rod 8 of the door switch 7.

Accordingly, as the door connecting rod moves from the inside to the outside, switching between the contact terminals 9a, 9b and 9c associated with the switch terminals 10a, 10b and 10c inside the door switch 7 is formed.

That is, the cab door reopening and off-vehicle side lights that are off-switched are turned on, and the cab indicators that were on-switched off are switched off.

According to the switching, in the electric vehicle driving system shown in FIG. 1, the cab indicator light indicating the opening and closing of the door is turned off, and the vehicle side light is formed on the outside of the electric vehicle to indicate the opening and closing of the door, and the door is not closed properly. In this case, the cab door reopening and closing circuit is configured to switch on and off to indicate the opening of the electric car door.

In the electric vehicle door detecting apparatus as described above, an interlock switch of a push button type that constitutes an electrical contact 9 by a mechanical stroke of the door switch push bar 2 is widely used.

However, the electric vehicle door entrance device of the prior art, when a defect occurs in the mechanically fixed portion for detecting the door, because the detection area is limited to only one side of the left or right door device, the door device on one side of the door detection device is configured If the fixed brackets, connecting rods, etc. are damaged, the door on the other side is free to move without being fixed.

Therefore, one door having a mechanical switch is formed as described above, and when the other door is opened, there is no method of electrically recognizing the open state of the other door. There is a problem that can cause a large safety accident falling on the track.

  In addition, mechanical impact of control air pressure (5kg / cm ㅂ) is applied to the door switch of the door device, and in particular, contact failure due to detachment of the contact point, breakage of the contact point, and deterioration of the spring for contact formation due to long-term repeated use. Occurs.

The present invention has been proposed to solve the above problems,

By using a semi-permanent non-contact proximity sensor and a solid state relay (SSR), the mechanical impact of the conventional mechanical push rod type door door detection switch is eliminated. As a result, it is intended to eliminate the causes of frequent defects.

Since the non-contact proximity sensor and the semiconductor switching element is used, the reliability of the switch configuration is increased, the time taken for troubleshooting, and the maintenance is easy to provide.

In addition, when the left and right doors of the train doors are detected by the sensor, that is, only when both doors of the train doors are normally closed, the train can start so that the train starts when the door is open or foreign matter is caught between the doors. The purpose of this is to prevent accidents while driving the train.

In the non-contact door detection control system using the proximity sensor of the present invention, the proximity sensor is installed on one side of the left and right doors of the electric vehicle door, and the door opening and closing detection required by the electric vehicle operating system is detected from the door opening and closing detection signal received from the proximity sensor. And control means for providing a signal.

Referring to the embodiment shown in the accompanying drawings, the present invention characterized by such a configuration as shown in Figures 5 to 6 as follows.

Proximity sensors 1 (21) and proximity sensors 2 (22) for detecting doors that are installed according to the opening and closing of the doors, which are installed with respect to the left and right doors 11 and 12 of the electric vehicle door, respectively, The door detection control means 20 generates an opening / closing signal of the door required by the electric vehicle driving system according to the door detecting signal and controls the operation according to whether the door is opened or closed in the electric vehicle driving system.

The door detection control means 20 is input from the power supply unit 23 for supplying the power required for each device unit, the sensor input port 24 for receiving the door detection signal of the proximity sensor, and the sensor input port 24 The controller 25 outputs a door open / close signal by determining whether the door is opened or closed according to the door detection signal of each proximity sensor, and the switching operation is performed according to the door open / close signal of the control unit 25, And an output terminal 26 for outputting a switching signal of the semiconductor switching elements 28, 29, and 30 for controlling the operation.

The output terminal 26 is a cab indicator light indicating the opening / closing of the door, a vehicle side light indicating the opening / closing of the door located on the outer side of the electric vehicle, and reopening when the door is not closed properly. It is connected to the cab door reopening and closing circuit, respectively, and the semiconductor switching elements 28, 29, 30 are configured to be connected to each of the terminals of the output terminal 26, the lighting of the cab indicator light, the vehicle side light in accordance with the switching operation It is configured to provide a current supply path to enable / disable and reopening and closing of the door.

Proximity sensor in the present invention characterized by such a configuration can be configured in various ways, such as optical sensor, magnetic sensor, but the optical sensor has a high risk of malfunction in the light emitting unit or the light receiving unit of the sensor, such as dust or foreign matter in a dark subway environment, Magnetic sensors are suitable for detecting metal chain doors and considering the subway environment.

The proximity sensor is preferably disposed close to the upper side from the center portion that the two side doors abut so as to detect the closed state of both doors as shown in FIG.

The proximity sensor is preferably configured as close and short as possible to the wire for signal transmission with the door detection control means 20 configured in the upper side of the proximity sensor.

The reason why the length of the wire is short is that if the wire is long, noise may be mixed around and malfunction may occur.

The door detection control means 20 receives a door opening and closing signal of a proximity sensor and transmits a switching signal for controlling an operation according to a door opening and closing required by an electric vehicle driving system, and includes a plurality of semiconductor switching elements 28, 29, and 30. The output terminal port of the corresponding output terminal 26 is configured.

As shown in FIG. 6, in the exemplary embodiment of the present invention, the semiconductor switching element relays 28, 29, 30, and output terminals are adapted to control the cab indicator light, the vehicle side light, the cab door reopening circuit of the electric vehicle driving system. Although the output terminal port (26) is configured, the semiconductor switching elements 28, 29 and 30 or the output terminal ports can be increased or decreased when the door detection signal is required in accordance with the change of the operating system of the electric vehicle.

The electric vehicle driving system connected to the output terminal 26 of the door detection control means 20 is composed of a cab indicator light, a vehicle side light, a cab door reopening circuit, and the like, and the door detection output from the controller 25. The cab indicator lights are switched on when the door is closed due to the switching operation of the semiconductor switching elements 28, 29, and 30 according to the signal, while the lateral switching light and the cab door reopening and closing circuits have an ounce switching. It has a switching structure configured.

 The power supply unit 23 has a configuration of supplying power required for the control unit 25, proximity sensor 1 (21), proximity sensor 2 (22), semiconductor switching elements (28, 29, 30), and the like.

Referring to the operation of the present invention having such a configuration as follows.

According to the operation of the door engine 1 of the electric vehicle, the door is opened and closed.

When the door of the electric vehicle is opened, each proximity sensor formed in the upper part of the door recognizes the opening of the door, and the door opening detection signal is input to the control unit 25 of the door detection control means 20.

The door open detection signals of the proximity sensor 1 (21) and the proximity sensor 2 (22) input as described above are determined to determine whether the door is opened or closed, and the semiconductor switching elements 28, 29, and 30 are controlled accordingly.

The controller 25 determines whether the door is opened or closed by calculating signal information of the proximity sensor 1 (21) and the proximity sensor (2) 22 by an AND combination.

FIG. 7 shows control logic of the semiconductor switching elements 28, 29, and 30 of the controller.

When the door is opened as described above, the door open / close signal of the proximity sensor outputs a low signal. Therefore, a low signal is also output to the output of the controller.

In other words, when at least one of the left and right doors is opened in the proximity sensor 1 (21) and the proximity sensor 2 (22), the output of the control unit 25 outputs a low signal.

According to the door opening and closing signal output from the controller 25, the first relay 28, which is a semiconductor switching element, is OFF, the second relay 29 is ON, and the third relay 30 is ON. ON) switching configuration.

The output terminal 26 of the first relay 28, which is the semiconductor switching element, has a cab indicator light indicating the opening / closing of the door, and the output terminal 26 of the second relay 29 is located on the outer side of the electric vehicle. The out-of-vehicle side light indicating the opening / closing of the door and the output terminal 26 of the third relay 30 are connected to the cab door reopening and closing circuits for reopening and closing the door if they are not closed properly.

Accordingly, the semiconductor switching elements 28, 29, and 30 are configured to be connected to each of the terminals of the output terminal 26 so that the cab indicator light is turned off and the lateral vehicle side light is turned on according to the switching operation. The electric vehicle driving system of ON is displayed and the door opening is displayed.

In addition, the semiconductor switching elements emphasize safety aspects by making the structure of the semiconductor switching elements impossible in a separate switching configuration.

When the electric vehicle describes the operation of closing the door,

As each proximity sensor formed at the upper end of the door closes the door, the door is detected when the metal chain door reaches the effective detection distance of the proximity sensor.

The detected door detection signal is input to the control unit 25 of the door detection control means 20 through the sensor input port 24.

As illustrated in FIG. 7, the controller 25 determines whether the door is opened or closed by calculating a door detection signal of the proximity sensor 1 21 and the proximity sensor 2 22 by an AND combination.

Accordingly, since the door detection signal is detected, a high signal is input to each of the proximity sensors 1 (21) and the proximity sensors 2 (22), that is, the left and right doors of the electric vehicle door are closed, and the control unit ( 25 outputs a high signal accordingly.

According to the door opening and closing signal output from the controller 25, the first relay 28, which is a semiconductor switching element, is turned on, the second relay 29 is turned off, and the third relay 30 is turned off.

Each of the output terminals 26 of the semiconductor switching elements 28, 29, and 30 has a first relay 28 with a cab indicator light, a second relay 29 with a vehicle side light, and a third relay 30 with a cab. It is connected to the door reclosing circuit.

Accordingly, the semiconductor switching elements 28, 29, and 30 are configured to be connected to each of the terminals of the output terminal 26 so that the cab indicator lights are turned on according to the switching operation, and the off-vehicle side lights are turned off. ), The driver's vehicle opening / closing circuit constitutes an OFF electric vehicle driving system to indicate the closing of the door.

If either side of the electric vehicle door is not closed or both are not closed, i.e., the left and right doors of the detection object are not detected within the effective detection distance of the proximity sensor, and the door is not closed, the proximity sensor opens the door. As is the case, the cab indicator of the electric vehicle operating system is turned off, the cab side lights are turned on, and the cab door reopening and closing circuit is turned on.

When the detection chain door is detected within the effective sensing distance of the proximity sensor, the control unit 25 of the control means calculates the sensor signal by AND combination to determine whether the door is opened or closed, and both the left and right doors of the electric vehicle door are proximity sensors. Only when detected by the electric vehicle entrance door (Close) will be recognized.

Therefore, the logic of the control unit 25 of the door detection control means is prevented from recognizing the door of the electric vehicle so that the door of the electric vehicle cannot be started even when one side of the electric vehicle is not closed unless all the doors of the electric vehicle are closed. A function was implemented.

Opening of the door only to the left or right side of the electric vehicle door in the prior art ?? The mechanical switch is configured to detect whether or not the failure of the side of the mechanical switch is configured to recognize whether the door of the other side of the opening and closing the problem that can cause a large safety accident starting the electric vehicle in the open state as described above When both sides of the door are detected, the door can be recognized by closing the solution.

An electric vehicle is waiting at the platform for departure without some of the electric vehicle doors shown in FIG. 4 being closed.

If the door is opened due to a foreign matter between the left and right doors of the electric vehicle door, the switching configuration between the switch terminal and the contact terminal of the open door has a cab indicator light off, a vehicle side light on, and a cab door reopening circuit on. .

Therefore, the driver of the electric vehicle manually operates the cab reopening lever to close the open door.

At this time, since the switching configuration of the third relay 30 for the corresponding door open is in the on state, a circuit capable of reopening and closing the door is configured to reopen and close the door.

However, since the switching configuration of the cab door reopening circuit is OFF in other closed doors, there is no circuit for reopening and closing the door, so that electrical signals do not drive the door engine 1, and the door is reopened. It doesn't work.

Therefore, only the door that is open is reopened without having to reopen all doors.

Therefore, the opening and closing operation is performed only on the open door, so that foreign matters can be removed between the entrance and exit doors of the electric vehicle, thereby starting the electric vehicle.

In the door detection control means 20, a manual door opening switch 27 is installed in parallel to manually open an electric vehicle door in the event of disconnection of wires or a failure of the electric vehicle entrance door device. Minimize time and effectively respond to shortening of processing time for subway delays caused by failures.

As described above, the non-contact door detection control system using the proximity sensor and the semiconductor switching element relay (SSR: Solid State Relay) of the present invention can check the reliable operation state of the electric vehicle door device using the sensor, Since the durability of the contact configuration and the switch configuration of the circuit is improved, there is an effect of preventing a large safety accident.

In addition, since the switch configuration for detecting the electric car door uses a non-contact proximity sensor and a semiconductor switching element, there is an effect of providing easy troubleshooting and easy maintenance.

In addition, according to the type of door device of the electric vehicle driving system adopts a structure that can be easily installed if necessary, it is easy to install in various types of door device has a remarkable effect in securing the safe operation of the electric vehicle.

1 is a view showing a contact configuration of a conventional push rod method (Push Rod) method

Figure 2 is a schematic diagram showing a closed state of a door of a conventional electric vehicle door is installed

Figure 3 is a schematic diagram showing an open state of a door of a conventional electric vehicle equipped with a mechanical door switch

4 is a perspective view showing an open door and a closed door of an electric vehicle door

Figure 5 is a schematic diagram of a non-contact door detection control system using the present invention proximity sensor

6 is a control schematic view of the door detection switch of the present invention;

7 is a signal flow diagram of a proximity sensor and a semiconductor switching device of the present invention door detection switch

<Description of the symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1 Door engine 2 Door switch pressure bar 3 Upper connecting rod 4 Lower connecting rod

5: Left bracket 6: Right bracket 7: Door switch 8: Door connecting rod

9a, 9b, 9c: contact terminal 10a, 10b, 10c: switch terminal 11: left door 12: right door 20: door detection control means 21: proximity sensor 1 22: proximity sensor 2 23: power supply

24: sensor input port 25: control unit 26: output terminal 27: door open switch

28: first relay 29: second relay 30: third relay 31: buffer rubber

Claims (5)

Proximity sensors for detecting doors which are installed for each of the left and right doors of the electric vehicle door and are approached according to opening and closing of the door, and door opening / closing signals required by the electric vehicle operating system according to door detection signals input from each proximity sensor. Non-contact door detection control system using a proximity sensor, characterized in that the control means for generating information and providing the electric vehicle driving system. The apparatus of claim 1, wherein the control unit comprises: a power supply unit supplying power required for each device unit, a sensor input port for receiving a door detection signal of a proximity sensor, and a door detection signal of each proximity sensor input from the sensor input port; The control unit for outputting the door opening and closing information by determining whether the door is opened or closed, and the switching of the semiconductor switching element and the semiconductor switching element for controlling the operation according to the door opening and closing required by the electric vehicle operating system by switching according to the door opening and closing information of the control unit. Non-contact door detection control system using a proximity sensor, characterized in that it comprises an output terminal for outputting a signal. 3. The output terminal according to claim 2, wherein the output terminal is a cab indicator light indicating the opening / closing of the door, a vehicle side light indicating the opening / closing of the door located on the outer side of the electric vehicle, and reopening when the door is not closed properly. Non-contact door detection control system using a proximity sensor, characterized in that it comprises a device connected to the cab door reopening and closing circuit for each. According to claim 1, wherein the proximity sensor is formed on the upper side of the electric vehicle door, the control means is a non-contact door detection control system using a proximity sensor, characterized in that it comprises a configuration formed on the upper side of the proximity sensor. . The method according to any one of claims 1 to 4, wherein the control means is installed in the proximity of the door sensor in the form of a control box (Control Box), and comprises a manual door opening switch in the control box. Non-contact door detection control system using a proximity sensor, characterized in that