KR20140117967A - Sliding type gate apparatus with non-contactive safety sensor - Google Patents

Abstract

The present invention detects an obstacle close to a side of a closed side and a bottom surface of a door that is projected and retracted in a circular arc trajectory in a non-contact manner based on a change in capacitance, thereby controlling an opening and closing operation of the door, To a sliding gate device having a non-contact type safety sensor capable of preventing breakage.
A sliding gate device having a non-contact type safety sensor according to the present invention is provided with at least two or more gates which are provided in a facility requiring entrance and exit control to form a doorway for entrance and exit, A sliding gate device comprising: a body; and a door provided on each of the gate bodies for opening and closing the doorway for entrance and exit, the door including a door which is projected toward and away from the passage side by an arc-shaped locus, A sensor body including an electrode for sensing capacitance; A sensing unit sensing a change in capacitance of the electrode for sensing capacitance; And a control unit for controlling opening and closing operations of the door when it is determined that an obstacle has been detected based on a change in capacitance sensed by the sensing unit.

Description

[0001] Sliding gate apparatus with non-contact safety sensor [0002]

More particularly, the present invention relates to a sliding gate device having a non-contact type safety sensor, and more particularly, to a sliding gate device having a non-contact type safety sensor, Contact safety sensor capable of preventing a safety accident and preventing breakage of a gate device by controlling an opening and closing operation of a door by sensing an obstacle.

Generally, a pass card, a ticket and an entrance ticket are checked at the entrance of a facility requiring access control such as a traffic facility such as a subway, a railroad and an airport, an arena or an amusement park, security facilities, A gate device is provided for allowing the gate to be opened.

As shown in FIG. 1, the gate device includes gate bodies M and S, which are installed at entrance and exit of a facility requiring access control, and which form an access passage, M, and S, respectively.

Meanwhile, the gate bodies M and S may be divided into a master gate body M and a slave gate body S.

The master gate body M includes a door D toward the slave gate body S and includes a master control unit, a driving unit for driving the door D according to a control signal of the master control unit, (S1), a traffic light, a buzzer, and the like.

The master control unit is configured to control the functions and functions of the entire system of the gate apparatus.

The slave gate body S includes a door D toward the master gate body M and includes a slave controller and a driver for driving the door D according to a control signal of the slave controller, (S2), a passage display, and the like.

The slave control unit receives a control signal from the master control unit and drives a driving unit included in the slave gate body (S).

For example, when the user passes through the access passage using the pass card, the master control section receives the pass card information to determine whether the user who is to pass through the access passage is an authorized person.

At this time, when it is determined that the user who intends to pass through the access passage is the authorized person, the master control unit transmits a control signal to the driving unit of the master gate body M to control the driving unit of the master gate body M The door of the master gate body M is opened.

Also, the master control unit transmits a control signal for controlling the driving unit of the slave gate body S to the slave control unit.

Accordingly, the slave control unit controls the driving unit of the slave gate body S based on the control signal transmitted from the master control unit, so that the door provided in the master gate body M is opened.

In order to drive the door up and down, a 'sliding type gate device' (hereinafter referred to as 'prior art 1') of Korean Registered Application No. 20-0385183 shown in FIG. 2, a sliding door of European Patent EP0644309B1 shown in FIG. (Hereinafter referred to as "Prior Art 2") and a safety device for a ticket gate operated by a motor drive (hereinafter referred to as "Prior Art 3") of International Patent Application WO2006 / 128694A1 shown in FIG. 4 have been disclosed.

2, the door 101 linked with the link bar 106 mounted on the gate body 100 is connected to the bearing unit 109b by the mutual coupling of the guide rail 109a and the bearing unit 109b, As shown in Fig.

3, the upper and lower levers 3 and 2 (hereinafter referred to as " upper and lower levers 3 and 2 " And a door 8 supported by a support frame 7 connected to the side arms 6 and 6 ', respectively.

4, the prior art 3 includes levers 13 and 14 coupled to one ends of pins 20 and 21 pivotally mounted on upper and lower sides of the base structure 19, The rod 11 connecting the ends of the levers 13 and 14 is integrally linked with the other ends of the pins 20 and 21 by interlocking the arms 17 and 18, A door (not shown) supported by the support rods 10 coupled with the arms 17 and 18 is configured to protrude and retract in an arc-shaped locus.

Meanwhile, the master control unit included in the conventional gate device as described above is configured such that the light irradiated from the infrared sensor (S2) provided in the slave gate body (S) is transmitted to the master gate body And detects the position of the user passing through the access passage based on whether the light is received by the light sensor S1.

However, in the case where foreign matters such as dust are accumulated on the infrared light sensor and the infrared light sensor, scratches are generated, smoke is generated due to fire or the like, The user can not accurately detect the position of the door, thereby causing the door to malfunction while the user is passing through the access passage, thereby causing a safety accident.

In addition, the infrared sensor and infrared sensor are not capable of detecting transparent obstacles.

In the case where the installation interval of the infrared light receiving sensor S1 provided in the master gate body M and the installation interval of the infrared light emitting sensor S2 installed in the slave gate body S are not densely installed, It is difficult to detect a small obstacle such as a carrier bag or a child's hand or foot.

Particularly, when the door is configured to protrude / retract into an arc-shaped locus, since the obstacle located at the lower end of the door can not be recognized, the door D is opened with the obstacle close to the lower end of the door, There is a problem that the device is damaged or a safety accident occurs.

As shown in FIG. 5, optical sensors S3 and S4 for safety sense are provided at the center of each gate body to prevent the door D from being closed by detecting a user passing through the entrance passage. Since a pair of doors D provided on each gate body are disposed apart from each other by about 10 cm on the basis of the safety sensors S3 and S4 as a reference, It is impossible to detect obstacles in the interval (d1, d2) between the doors of the pair.

An object of the present invention to solve the above problems is to provide a non-contact method based on a change in capacitance, which detects an obstacle close to a rim of a closed side and a bottom surface of a door, And a non-contact type safety sensor capable of preventing a safety accident and preventing the breakage of the gate device by controlling the opening and closing operation of the sliding gate device.

According to an aspect of the present invention, there is provided a sliding gate device including a non-contact type safety sensor, the sliding gate device including a door opening and closing door installed at a facility requiring access control, And a door provided on each of the gate bodies for opening and closing the entrance passage and including a door which is projected toward the passage side with an arc-shaped locus, the sliding gate device comprising: A sensor body mounted along the rim of the lower surface and configured to include a capacitance sensing electrode; A sensing unit sensing a change in capacitance of the electrode for sensing capacitance; And a control unit for controlling opening and closing operations of the door when it is determined that an obstacle has been detected based on a change in capacitance sensed by the sensing unit.

Preferably, the sensor body portion includes a conductive metal frame mounted along a rim of a closed side surface and a bottom surface of the door; An insulating protective cover coupled along the outside of the conductive metal frame; And a buried electrode buried along the longitudinal direction inside the insulating protective cover, and the buried electrode can function as the electrode for capacitance sensing.

Preferably, the sensing unit is formed in the form of a printed circuit board (PCB) on which a chip for implementing a sensing function is mounted. The sensing unit includes connecting means connected to the buried electrode at one end thereof. And a protective cover for a built-in sensing unit having a through-hole formed in the longitudinal direction so as to incorporate the sensing unit is connected to the bottom surface of the insulating protective cover, , At least a part of the through-hole is inserted into a lower end of the conductive metal frame to support a flat surface on the opposite side of the sensing part with the contact pin, so that the contact pin passes through the sensing cover The conductive metal frame is brought into contact with a predetermined portion of the conductive metal frame, The lid can be assembled.

Preferably, the lower end of the contact pin is fixed to the upper surface of the sensing unit, and the upper end of the contact pin is bent in a direction opposite to the sliding assembly direction of the sensing cover.

Preferably, the buried electrode is formed in a flat strip shape, and the entrance or exit side of the entrance and exit passage may be bent or convex or concave toward the direction.

Preferably, the buried electrode may be composed of a braided wire.

Preferably, the control unit stores a sensing signal corresponding to a change in capacitance during the normal closing of the door as a reference signal, and when the deviation between the sensing signal and the reference signal during the door operation is out of an error range or more, .

Preferably, the control unit stores a sensing signal corresponding to a change in capacitance during the normal closing of the door as a reference signal, and initializes the sensing unit to store a new reference signal based on the sensing signal at the door operation for each predetermined number of times .

Preferably, each of the gate bodies corresponding to the central portion of the entry / exit passage is provided with a photosensor for sensing an obstacle, and the control unit includes a pair of doors provided on both doors for opening / When an obstacle is detected in both doors on the basis of a change in capacitance sensed by the sensing unit and an obstacle is not detected in the optical sensor for safety sense, it is determined that the optical sensor for safety sensing is in failure, The opening / closing operation of the door can be controlled based on the change in the capacitance detected in the door.

According to an aspect of the present invention, there is provided a sliding gate device including a non-contact type safety sensor, the sliding gate device including a door opening and closing door installed at a facility requiring access control, At least two gate bodies each having an optical sensor for safety sense at the center thereof, and an arc-shaped locus for opening and closing the gate for opening and closing the passageway, The sliding gate device according to claim 1, further comprising: a conductive metal frame mounted along a rim of a closed side and a bottom surface of the door; an insulating protective cover coupled along the outer side of the conductive metal frame; And a buried electrode buried along the longitudinal direction inside the insulating protective cover Doedoe sex, body sensor unit is configured for the embedded electrode to function as an electrode for sensing capacitance; A conductive metal frame having a width smaller than that of the conductive metal frame and formed in the form of a PCB substrate on which a chip for implementing a sensing function is mounted and having connecting means connected to the buried electrode at one end thereof, A sensing unit having contact pins for contact with the buried electrodes and sensing a change in capacitance of the buried electrodes; And a controller for controlling opening and closing operations of the door when it is determined that an obstacle is sensed based on a change in capacitance sensed by the sensing unit, Wherein at least a part of the lower end of the conductive metal frame is inserted into the through hole so that the upper surface of the lower surface of the conductive metal frame Wherein the contact pin is in contact with a predetermined portion of the conductive metal frame in a state in which the contact pin passes through the protective cover for inserting the sensing unit and the cover is assembled to close the end of the sensing cover, The lower end of the contact pin is fixed to the upper surface of the sensing unit formed in the form of a PCB substrate, Group is bent in the opposite direction of the sensing unit built in the detector assembly of the sliding cover for the internal protection direction.

According to the present invention as described above, since the opening and closing operation of the door is controlled by detecting an obstacle close to the rim of the closed side and the bottom face of the door that is projected and withdrawn in the circular trajectory in a non-contact manner based on the change in capacitance, And the breakage of the gate device can be prevented.

In addition, a conductive metal frame is mounted along the rim of the closed side and the bottom surface of the door, buried electrodes are buried along the longitudinal direction inside the insulating protective cover coupled along the outside of the conductive metal frame, And the sensing part for sensing the capacitance is fixed to one side of the lower part of the door, so that no deformation occurs in the buried electrode during the opening and closing operation of the door, so that the capacitance sensing can be precisely performed without error.

In addition, the electrode for electrostatic capacity sensing can be easily formed on the edge of the closed side and the bottom surface of the door which is projected and withdrawn in an arc-shaped locus through a simple assembling structure, and the present invention can be applied not only to a simple installation, There is an advantage.

In addition, since the buried electrode is bent or protruded or concaved toward the entrance or exit side of the entrance / exit passage, it is possible to more effectively detect the obstacle close to the bottom surface and the closed side of the door.

In addition, since the method determines that there is an obstacle when the sensing signal according to the change in capacitance exceeds the error range, there is an advantage that the sensitivity of recognizing the obstacle can be adjusted by adjusting the error range.

In addition, there is an advantage in that there is less possibility that an error occurs in the sensing operation even if foreign substances such as dust accumulate by initializing to store a new reference signal on the basis of the sensing signal in the door operation every predetermined number of times.

In addition, it has an advantage of being able to sense an obstacle of transparent material by sensing a sensing signal according to a change in capacitance.

Further, since the upper end of the contact pin is bent in a direction opposite to the sliding direction, the contact pin can be smoothly slidably mounted on the surface of the conductive metal frame.

In addition, since the optical sensor for safety sense provided at the center of the gate device and the sensor body mounted along the rim of the closed side and bottom face of the door together detect an obstacle, the obstacle detection function is improved.

In addition, even if a collision between the sensor body and the obstacle is caused by an obstacle approaching the opening / closing speed of the door, the impact can be relieved by the hollow portion formed inside the insulating protective cover, which is advantageous.

1 is a perspective view of a gate device according to a conventional example.
2 is a schematic view showing a schematic configuration of a door driving unit of a gate apparatus according to a conventional example.
3 is a schematic view showing a schematic configuration of a door driving unit of a gate apparatus according to another conventional example.
4 is a perspective view showing a schematic configuration of a door driving unit of a gate apparatus according to another embodiment of the related art.
5 is a plan view of a gate device according to a conventional example.
6 is a front view of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention;
FIG. 7 is a side view of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention; FIG.
8A is a plan view of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention.
8B and 8C are sectional views of a door part of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention.
FIG. 9A is a perspective view illustrating a state in which a sensor body is mounted on a door of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention; FIG.
9B is a sectional view taken along the line AA 'in FIG. 9A.
9C is a cross-sectional view taken along line BB of FIG. 9A.
FIG. 9D is a cross-sectional view taken along the line CC 'in FIG. 9A. FIG.
FIG. 9E is a cross-sectional enlarged view of a contact pin included in a sensing unit of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention; FIG.
FIG. 10A is an exploded perspective view of FIG. 9A. FIG.
FIG. 10B is an enlarged view of a portion "A" in FIG. 10A. FIG.
11A to 11D illustrate operation of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention.
12 is a block diagram of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention.
13 is a block diagram showing a schematic configuration of a sensing unit of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention.
FIG. 14 is a block diagram showing a schematic configuration of a PLL module constituting a sensing unit of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention; FIG.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention is a gate device installed in a facility requiring access control to form a doorway for entrance and exit. The sliding gate device includes at least two gate bodies 10 and 20 And doors (11, 21) provided in the respective gate bodies (10, 20) and projecting and retracting toward the passage side in an arc-shaped locus.

For example, as shown in FIG. 6, the sliding gate device having the non-contact type safety sensor of the present embodiment is provided with a first gate body 10 and a first gate body 10, The second door 21 is provided in the first door 11 and the second gate body 20, which are protruded toward the passage side. The second door 21 protrudes and retracts toward the passage side in an arc- And the like.

The first door 11 is protruded toward the outer side of the first gate body 10 (toward the entrance gate side or the second gate body 20 side) at the time of closing the entrance gate, The second door 21 protrudes toward the outer side (the entrance gate side or the first gate body 10 side) of the second gate body 20 so that the entrance gate is closed do.

The first door (11) is rotated in an arc-shaped locus so as to be received inside the first gate body (10), and the second door (21) And is rotationally operated in an arc-shaped locus so as to be received on the inner side of the body 20, whereby the access passage is opened.

A mechanism for allowing the first door 11 and the second door 21 to protrude and retract in an arc-shaped locus is already well known in the art, so that a detailed description thereof will be omitted.

7 and 8A, entrance and exit sensing sensors S1 and S2 are provided at the entrance (or exit) of the first gate body 10 and the second gate body 20, do.

For example, the first gate body 10 is provided with an optical sensor S1 for receiving light, and the second gate body 20 is provided with a light sensor for emitting light to the light receiving sensor S1 (S2) may be provided.

The entrance and exit photosensors S1 and S2 provided at the entrance (or exit) of the first gate body 10 and the second gate body 20 are connected to the light sensor S2 And detects the entrance and exit of a person based on whether or not the light is received by the light receiving sensor S1.

On the other hand, in the central portion of the entrance and exit passage formed by the first gate body 10 and the second gate body 20, that is, the portion where the first door 11 and the second door 21 are installed, Sensors S3 and S4 are provided.

For example, as shown in FIGS. 7 and 8A, the first gate body 10 is provided with a photosensor S3 for receiving light, and the second gate body 20 is provided with the photosensor S3 for irradiating light to the light-emitting device.

The safety sensors S3 and S4 detect that there is an obstacle in the central portion of the entrance passage based on whether or not the light emitted from the light sensor S4 for light emission is received by the light sensor S3 When there is an obstacle between the first door 11 and the second door 21, the first door 11 and the second door 21 are not closed.

Meanwhile, in the sliding gate device having the non-contact type safety sensor according to the embodiment of the present invention, when the optical sensors S3 and S4 for safety sense fail to detect obstacles ('d1', 'd2' A non-contact type safety sensor for detecting a person is further provided.

8A to 10A, the non-contact type safety sensor includes a sensor body 100 and a sensing unit 200. The sensing information sensed by the non-contact type safety sensor is transmitted to the controller 300, Lt; / RTI >

Meanwhile, the control unit 300 may be separately configured for the non-contact type safety sensor. However, the main control unit (300A 'in FIG. 12) that controls the gate device as a whole performs the function of the control unit 300 desirable.

The sensor body 100 is mounted along the rim of the closed side and bottom surfaces of the doors 11 and 21 and includes an electrode for capacitance sensing.

For example, as shown in FIG. 10A, the sensor body 100 includes a conductive metal frame 110 mounted along the rim of the closed side and the bottom of the doors 11 and 21, An insulating protective cover 120 coupled along the outer side of the metal frame 110 and a buried electrode 130 buried along the longitudinal direction inside the insulating protective cover 120.

As described above, the sensor body 100 is mounted with the doors 11 and 21, and the first door 11 will be described below.

The conductive metal frame 110 is made of a metal material having good electrical conductivity such as aluminum and includes a first frame 111 mounted on the edge of the closed side of the door 11, And a third frame 115 formed in a fan shape to connect the rim of the closed side of the door 11 with the rim of the bottom surface.

The first frame 111, the second frame 113, and the third frame 115 are assembled together so that electricity can pass therethrough. For example, protrusions are formed at both ends of the third frame 115, Holes for inserting the protrusions are formed in the first frame 111 and the second frame 113 so that the protrusions of the third frame 115 are inserted into the holes of the first frame 111 and the second frame 113 And can be assembled to be inserted.

On the other hand, a finishing member 150 for finishing can be coupled to the upper portion of the first frame 111 mounted on the closed side edge of the door 11. [ For example, the closing member 150 may be fixed as the bolt passing through the closing member 150 is coupled to the hole (110h 'in FIG. 9B) of the first frame 111.

9B and 9C, the mounting surface of the conductive metal frame 110 mounted on the door 11 may be formed in a stepped groove for mounting on the door 11 in the longitudinal direction. And a protrusion inserted into the stepped groove may be formed in the door 11 in the longitudinal direction.

An engaging groove for engaging the insulating protective cover 120 is formed on the opposite side of the mounting surface of the conductive metal frame 110 mounted on the door 11,

Shaped cross-section.

The insulating protective cover 120 is made of a synthetic resin material such as rubber, which is not electrically conductive, and is coupled along the outer side of the conductive metal frame 110 as shown in FIG. 10A.

As shown in FIGS. 9B and 9C, a coupling protrusion is formed on a coupling surface of the insulating protection cover 120 coupled to the conductive metal frame 110, , The engaging projections are approximately '

Shaped cross-section and is slidably coupled to the coupling groove.

Meanwhile, the insulating protection cover 120 may be formed with a hollow portion 120h for buffering effect.

The buried electrode 130 is formed of a material having a good electrical conductivity and is embedded in the insulating protection cover 120 along the longitudinal direction. For example, the buried electrode 130 may be formed of a braided wire or a strip electrode And the like.

The buried electrode 130 may be formed to be convex or concave toward the entrance or exit side of the entrance passage as shown in Figs. 8B and 8C.

In addition, the buried electrode 130 may be formed to be bent in a 'V' shape toward the entrance or exit side of the entrance / exit passage.

As described above, since the buried electrode 130 is formed to be convex, concave or curved, the obstacle can be effectively sensed at the entrance or exit side of the entrance passage.

Meanwhile, a protective cover 125 for inserting a sensing unit is formed in the bottom surface of the insulating protective cover 120, and a through hole 125h is formed in the longitudinal direction so that the sensing unit 200 is embedded. A lid 140 for finishing is assembled to the end of the protective cover 125 for internal use.

The protective cover 125 and the lid 140 will be described in detail in the description of the sensing unit 200.

In the sensor body 100 having the above-described structure, the buried electrode 130 functions as the electrode for capacitance sensing.

The sensing unit 200 is configured to sense a change in capacitance of the buried electrode 130.

All materials on earth including the human body are formed with a virtual ground with the earth.

Therefore, the (+) pole of the buried electrode 130 and the (-) pole of the obstacle near the buried electrode 130 (for example, a part of the earth and the grounded body) can be seen.

The sensing unit 200 may be connected to the buried electrode 130 and may be connected to the buried electrode 130 by an obstacle close to the buried electrode 130. [ Sensing the change in capacitance.

The sensing unit 200 is formed in the form of a printed circuit board (PCB) on which a chip for implementing a sensing function is mounted. The sensing unit 200 includes connecting means 210 connected to the buried electrode 130 at one end thereof, A contact pin 220 for contacting the second frame 113 constituting the conductive metal frame 110 is formed and has a width smaller than that of the conductive metal frame 110.

As the connecting means 210, known connecting means used for connecting an external electric wire to the electrode portion of the PCT substrate may be variously applied. For example, connection through soldering or connection via a clip-type fixing member, Type connection can be applied.

13, the sensing unit 200 includes connecting means 210 connected to the buried electrode 130, a contact pin 220 contacting the conductive metal frame 110, A phase locked loop (PLL) module 230, an ADC module 240, an MCU 250, an input module 260, and a power module 270.

14, the PLL module 230 includes a variable capacitance diode 230b whose one end is connected to the RF oscillator 230a, a phase locked loop IC 230c, a phase locked loop IC A frequency adjusting signal line 230d for connecting the variable capacitance diode 230c and the variable capacitance diode 230b, and a detection capacitor 230e.

The variable capacitance diode 230b has a property of changing the capacitance according to the applied voltage, one end connected to the frequency adjusting signal line 230d, and the other end grounded.

Therefore, when it is necessary to actively adjust or change the oscillation frequency of the RF oscillator 230a, the voltage for frequency adjustment applied to the variable capacitance diode 230b may be changed.

The RF oscillator 230a and the phase locked loop IC 230c are connected in parallel to the variable capacitance diode 230b.

The phase locked loop IC 230c continuously checks the oscillation frequency of the RF oscillator 230a through the detection capacitor 230e and adjusts the frequency of the oscillation frequency of the variable capacitance diode 230b through the frequency adjustment signal line 230d Voltage to maintain the oscillation frequency of the RF oscillator 230a constant.

The frequency adjusting signal line 230d may be provided with a loop filter 230f for converting the power supplied to the frequency adjusting signal line 230d to DC power.

The gate device of the present embodiment keeps the oscillation frequency of the RF oscillator 230a constant by using the phase locked loop IC 230c in the process of opening and closing the first door 11 and the second door 21 Feature.

If an obstacle comes close to the buried electrode 130 and a change in capacitance occurs during the opening and closing of the first door 11 and the second door 21, the oscillation frequency of the RF oscillator 230a changes. At this time, The oscillation frequency is kept constant by suitably changing the frequency adjustment voltage applied to the variable capacitance diode 230b in the phase locked loop IC 230c.

In other words, the fact that the frequency adjustment voltage maintains the set reference value means that the oscillation frequency of the RF oscillator 230a maintains the reference state because there is no obstacle, and if the frequency adjustment voltage deviates from the set reference value, It means that the oscillation frequency of the oscillator 230a does not maintain the reference state, and whether or not an obstacle exists can be determined based on whether the frequency adjustment voltage is fluctuated.

The fluctuation of the voltage for frequency adjustment may be sensed through a change in voltage for frequency adjustment through the voltage sensing line 230g connected to the phase locked loop IC 230c or the loop filter 230f.

On the other hand, a reference value of the reference frequency of the RF oscillator 230a and a voltage for frequency adjustment output to maintain it are set in the phase locked loop IC 230c.

In order to restore the oscillation frequency of the RF oscillator 230a, which varies depending on the proximity of the obstacle, to a reference frequency, software for determining the degree of frequency adjustment voltage to be applied or hardware for implementing the algorithm is provided.

On the other hand, due to the characteristics of the capacitance sensing, a point (hereinafter, referred to as 'dead point') where the obstacle can not be detected even when the obstacle approaches the PLL module 230 may be generated. A plurality of PLL modules 230 may be configured to alternately detect the PLL module 230.

The ADC module 240 is connected to the PLL module 230 and converts the analog voltage signal output from the PLL module 230 into a digital voltage signal according to a change in the voltage for adjusting the frequency of the variable capacitance diode 230b And preferably has an amplification function.

The MCU 250 is connected to the ADC module 240 and receives a digital voltage signal output from the ADC module 240 and transmits the digital voltage signal to the controller 300 through the interface 280.

Meanwhile, the MCU 250 may have a structure in which the ADC module 240 is integrated.

The input module 260 is an element for manipulating or resetting the preset reference signal, and the power module 270 is a power element for supplying driving power for driving the sensing unit 200. The power module 270 are supplied with power from the outside.

The sensing unit 200 may be inserted into the through hole 125h of the protective cover 125 for sensing part built in the end of the lower surface of the insulating protective cover 120 to be embedded therein.

The sensing unit built-in protective cover 125 is formed to have a cross-sectional shape similar to that of the insulative protective cover 120, and a through hole 125h for inserting the sensing unit 200 is formed.

10A, the contact pin 220 of the sensing unit 200 is exposed through an exposing hole h1 formed on one side of the sensing cover internal protective cover 125, The upper end of the contact pin 220 comes into contact with the lower surface of the second frame 113 constituting the conductive metal frame 110 as shown in FIG.

Meanwhile, as shown in FIG. 9A, the sensing unit 200 is connected to the power line V _dd and the ground line GND for driving.

The sensing unit 200 is connected to a signal line SL for transmitting information on capacitance sensed through the buried electrode 130 to the controller 300.

The contact pin 220 is electrically connected to the ground line GND and the conductive metal frame 110 in contact with the contact pin 220 functions as a common ground.

The lid 140 is coupled to an end of the second frame 113 constituting the conductive metal frame 110.

The lid 140 is configured to be at least partially inserted into the through hole 125h.

Also, the lid 140 supports the opposite side of the sensing part 200 on the side where the contact pin 220 is provided.

Therefore, the contact pin 220 may be in contact with a predetermined portion of the second frame 113 constituting the conductive metal frame 110 while passing through the exposure hole h1, The frame 110 may function as a common ground.

9E, when the inserting portion 141 of the cover 140 is inserted into the through hole 125h of the sensing cover 125, The contact pin 220 can be brought into contact with the lower surface of the second frame 113 constituting the conductive metal frame 110 by supporting a flat surface on the opposite side of the side where the pin 220 is provided.

The contact pin 220 is fixed to the upper surface of the sensing unit formed in the form of a PCB substrate and the upper end of the contact pin 220 is connected to a protective cover 125 for sensing unit built- As shown in Fig.

When the sensing unit 200 is slidably coupled to the conductive metal frame 110 in a state where the sensing unit 200 is embedded in the protective cover 125 for incorporating the sensing unit, the upper end of the contact pin 220 contacts the lower portion of the conductive metal frame 110 At this time, since the upper end of the contact pin 220 is bent in a direction opposite to the sliding direction, it can be smoothly inserted without sliding.

Meanwhile, the cover 140 is coupled to the end of the second frame 113 to close the end of the sensing cover 125.

Since the sensor body 100 and the sensing unit 200 are fixedly mounted on the rim of the door 11 as described above, There is an advantage that the capacitance sensing can be precisely performed without any error.

For example, when the sensing unit 200 is provided on the side of the gate body 10 rather than on the door 11, the embedded electrode 130 may be connected to the sensing unit 200, In this structure, the buried electrode 130 may be deformed to be folded or unfolded during the opening and closing operations of the door 11, resulting in a large error in the capacitance sensing. In the example, such a problem is fundamentally blocked through the above-described configuration.

When the control unit 300 determines that an obstacle is detected based on the change in the capacitance detected by the sensing unit 200, the control unit 300 controls the opening and closing operations of the first door 11 and the second door 21 .

The control unit 300 stores a sensing signal corresponding to a change in capacitance in the process of normally closing the first door 11 and the second door 21 as a reference signal, It is determined that there is an obstacle when the deviation between the sensing signal and the reference signal during the operation of the two door 21 is out of the error range or more.

The reference signal may be a predetermined signal and may be a voltage for adjusting the frequency to be applied to the variable capacitance diode 230b generated in the process of normally closing the first door 11 and the second door 21.

That is, the first door 11 and the second door 21 store the reference voltage signal for the frequency adjustment voltage applied to the variable capacitance diode 230b as a reference signal, It is determined that there is an obstacle when the variation of the voltage for frequency adjustment applied to the variable capacitance diode 230b and the deviation of the reference signal deviate from the error range by an actual operation of the second door 21 and the second door 21.

The control unit 300 stores a sensing signal corresponding to a capacitance change during the normal closing of the first door 11 and the second door 21 as a reference signal, A new reference signal is initialized to store a new reference signal based on the sensing signal during operation of the first door 11 and the second door 21, thereby preventing an error in the sensing operation.

For example, the sensing signal in the normal closing process of the first door 11 and the second door 21 for 10 times every 10 operations of the first door 11 and the second door 21 Or initialize the sensing signal in the closing process of the normal first door 11 and the second door 21 in the last operation to store a new reference signal.

The control unit 300 stores a sensing signal corresponding to a capacitance change in the process of normally opening and closing the first door 11 and the second door 21 as a reference signal, Can be stored as a data value of a predetermined graph shape in which the sensing signal changes according to the interval between the door 11 and the second door 21, and a predetermined error range based on the data value of the graph form can be set have.

Therefore, the control unit 300 determines whether the deviation between the sensing signal when the first door 11 and the second door 21 are opened or closed and the reference signal stored as the data value of the predetermined graph type is within a predetermined error range It is judged that there is no obstacle, and if not, it can be judged that there is an obstacle.

The control unit 300 may control to stop the opening or closing operation of the first door 11 and the second door 21 or to control the opposite operation.

For example, when it is determined that there is an obstacle while the first door 11 and the second door 21 are opened, the first door 11 and the second door 21 are controlled to be closed The first door 11 and the second door 21 may be controlled to be opened when it is determined that there is an obstacle while the first door 11 and the second door 21 are closed.

On the other hand, the controller 300 controls the doors 11 and 21 on both sides based on the change in the capacitance sensed by the pair of sensing units provided on the doors 11 and 21 on both sides for opening / When an obstacle is not detected in the safety sensors R3 and R4 for detecting obstacles in the respective gate bodies 10 and 20 corresponding to the central portion of the access passage, The opening / closing operation of the doors 11 and 21 is controlled on the basis of the change in the capacitance detected by the sensing unit, when it is determined that the safety sensors R3 and R4 fail.

12, the control unit 300 includes a main control unit 300A provided in the first gate body 10 and an auxiliary control unit 300B provided in the second gate body 20, And the like.

The sensor body 100, the sensing unit 200, the main control unit 300A, the gate driving unit A1, the photosensors S1 and S3 for receiving light, the first gate 11, the sensor body 100, ), A traffic light B1, a buzzer C, a Switching Mode Power Supply (SMPS), and the like.

The second gate body includes a second door 21, a sensor body 100, a sensing unit 200, an auxiliary control unit 300B, a gate driving unit A2, light sensors S2 and S4, A display lamp B2, and the like.

The main control unit 300A is configured to control and control the entire system of the first gate body 10 and the second gate body 20 and the first door 11 of the first gate body 10 The sensor body 100 installed on the second door 21 of the second gate body 20 and the capacitance signal sensed by the sensing unit 200 are received respectively by the first door 11 and the second door 21, It is determined whether or not there is an obstacle on the rim of the closed side and the bottom surface of the second door 21.

The main control unit 300A drives the gate driving unit A1 provided in the first gate body 10 to open and close the first door 11 when it is determined that there is an obstacle in the central part of the entrance / And transmits a control signal for driving the gate driver A2 provided in the second gate body 20 to the auxiliary controller 300B.

The sub control unit 300B drives the gate driving unit A2 provided in the second gate body 20 according to the control signal transmitted from the main control unit 300A to control the opening and closing operation of the second door 21 do.

The opening and closing operations of the first door 11 and the second door 21 by the main control unit 300A and the auxiliary control unit 300B may be simultaneously performed.

11A to 11D are operation diagrams of a sliding gate device having a non-contact type safety sensor according to an embodiment of the present invention. Referring to the drawings, the operation of the sliding gate device having the non- do.

As shown in FIG. 11A, a user pushing the carrier bag checks the pass card at the entrance of the access passage, so that the passage is opened.

At this time, the three photosensors S3 for safety sense provided at the center of the gate bodies 10 and 20 are positioned higher than the carrier bag, so that the carrier bag can not be detected.

In this case, in the case of the conventional gate device, the first door 11 and the second door 21 are opened by the user checking the pass card at the entrance of the entrance passage, An upper portion of the carrier bag is caught on the lower surface of the second door 21 and the first door 11 and the second door 21 are damaged.

The sliding gate device with the noncontact type safety sensor according to the present embodiment is provided with the sensor body portion 100 along the rim of the closed side and the bottom surface of the first door 11 and the second door 21, The sensor body 100 provided at the lower edges of the first door 11 and the second door 21 senses the carrier bag in a non-contact manner, as shown in FIG. 11B.

Therefore, as shown in FIG. 11C, the first door 11 and the second door 21 are stopped by the controller 300 or the closing operation is performed, which is the opposite operation of the opening operation, Thereby preventing the upper portion of the carrier bag from being caught on the lower surfaces of the door 11 and the second door 21.

At this time, the user pulls the carrier bag to the side where the carrier bag is located so that the upper part of the carrier bag is not caught.

Then, as shown in FIG. 11D, the first door 11 and the second door 21 are opened again, and the user can push the carrier bag.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: sensor body part 110: conductive metal frame
120: Protective cover 125: Protective cover for sensing part
130: buried electrode 140: cover
200: sensing unit 210: connection means
220: contact pin 300:

Claims (10)

At least two or more gate bodies installed in a facility requiring access control to form an access passage, the entrance and exit portions being provided with an optical sensor for detecting entrance and exit, and a gate body for opening and closing the access passage, And a door that protrudes and retracts toward the passage side in an arc-shaped locus, the sliding gate device comprising:
A sensor body mounted along a rim of a closed side and a bottom surface of the door, the sensor body including an electrode for sensing capacitance;
A sensing unit sensing a change in capacitance of the electrode for sensing capacitance; And
And a control unit for controlling opening and closing operations of the door when it is determined that an obstacle is detected based on a change in capacitance sensed by the sensing unit.
The method according to claim 1,
The sensor body may include:
A conductive metal frame mounted along the rim of the closed side face and the bottom face of the door;
An insulating protective cover coupled along the outside of the conductive metal frame; And
And a buried electrode buried along the longitudinal direction inside the insulating protective cover,
And the buried electrode functions as the capacitance sensing electrode. The non-contact type safety sensor according to claim 1,
3. The method of claim 2,
The sensing unit may be formed in the form of a printed circuit board (PCB) on which a chip for implementing sensing functions is mounted. The sensing unit may include connecting means connected to the buried electrode at one end thereof. A conductive metal frame having a width smaller than that of the conductive metal frame,
A protective cover for a built-in sensing unit having a through hole formed in the longitudinal direction so as to incorporate the sensing unit is connected to the bottom surface of the insulating protective cover,
Wherein at least a part of the through-hole is inserted into the lower end of the conductive metal frame to support the opposite flat surface portion of the sensing portion on which the contact pin is provided, And a lid for closing the end of the protective cover for incorporating the sensing part is assembled to the sliding gate device.
The method of claim 3,
Wherein the lower end of the contact pin is fixed to the upper surface of the sensing unit and the upper end of the contact pin is bent in a direction opposite to the sliding assembly direction of the sensing cover. .
3. The method of claim 2,
Wherein the buried electrode is formed in a flat strip shape, and the entrance or exit side of the entrance / exit passage is bent, convex or concave toward the direction.
3. The method of claim 2,
Wherein the buried electrode is formed of a woven wire. ≪ RTI ID = 0.0 > 8. < / RTI >
The method according to claim 1,
Wherein,
Wherein the controller determines that there is an obstacle when the deviation between the sensing signal and the reference signal during the door operation is out of an error range or more, and stores the sensing signal in accordance with the capacitance change during the normal closing of the door as a reference signal. The sliding gate device having a non-contact type safety sensor.
The method according to claim 1,
Wherein,
Wherein the controller is configured to store a sensing signal corresponding to a change in capacitance during the normal closing of the door as a reference signal and to initialize the new reference signal based on a sensing signal at the door operation every predetermined number of times, And the sliding gate device.
The method according to claim 1,
Each of the gate bodies corresponding to the central portion of the access passage is provided with an optical sensor for safety sense for detecting an obstacle,
Wherein the control unit detects an obstacle in both doors on the basis of a change in capacitance sensed by a pair of sensing units provided on both doors for opening and closing the entrance and exit passages, Wherein the controller controls the opening and closing operation of the door based on a change in the capacitance detected by the sensing unit when it is determined that the optical sensor for the safety sensor is malfunctioning, Device.
At least two gate bodies provided in a facility requiring access control to form access passages, an entrance and exit optical sensors for entrance and exit, and an optical sensor for safety sense at the center, And a door provided on each of the gate bodies so as to be interdigitated with respect to a sensor, the door including a door which is opened and closed toward the passage side by an arc-shaped locus for opening and closing the entrance passage,
An insulating protective cover coupled along the outside of the conductive metal frame, and a buried electrode buried in the insulating protective cover in the longitudinal direction, A sensor body configured to function as an electrode for capacitance sensing;
A conductive metal frame having a width smaller than that of the conductive metal frame and formed in the form of a PCB substrate on which a chip for implementing a sensing function is mounted and having connecting means connected to the buried electrode at one end thereof, A sensing unit having contact pins for contact with the buried electrodes and sensing a change in capacitance of the buried electrodes; And
And a control unit for controlling the opening and closing operation of the door when it is determined that an obstacle is detected based on a change in the capacitance detected by the sensing unit,
And a sensing cover for sensing the sensor is formed in the end portion of the bottom surface of the insulating protective cover so that the sensing portion is embedded in the longitudinal direction of the sensing cover. At least a part of the conductive cover is inserted into the through hole at the lower end of the conductive metal frame. The contact pin is supported on the opposite side of the surface of the sensing unit on which the contact pin is provided so that the contact pin is brought into contact with a predetermined portion of the conductive metal frame while passing through the sensing cover, And a lower end of the contact pin is fixed to an upper surface of a sensing unit formed in the form of a PCB substrate and an upper end of the contact pin is inserted into a sliding assembly Wherein the sliding door is provided with a non-contact type safety sensor Boot device.

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