JP2005155283A - Automatic door system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it difficult for a suspicious person to enter or an unauthorized intruder to escape by controlling an automatic door.
SOLUTION: When an automatic door controller 40 detects a person or an object with an indoor sensor 35 and an outdoor sensor 36, a normal mode for opening the door 12 and a security mode for determining whether or not the door 12 has been illegally opened. To be switchable to When it is determined that the door 12 is illegally opened during the control in the crime prevention mode, the automatic door controller 40 executes control for driving the motor 14 in the direction to close the door 12.
[Selection] Figure 1

Description

  The present invention relates to an automatic door system, and in particular, attempts to make it difficult for a suspicious person or an unauthorized intruder to escape by controlling the automatic door.

Conventionally, as an automatic door system for controlling opening and closing of an automatic door installed at a building entrance or the like, for example, as disclosed in Patent Document 1 below, an alarm is issued when an intruder is detected in a crime prevention mode. It has been known. Specifically, in the one disclosed in this document, sensors are arranged on the front side and the back side of the sliding door provided at the opening of the entrance of the building, etc. Detected. Further, a projector and a light receiver are disposed in the opening, and a person or an object passing through the opening is detected by the light projector / receiver. And a night switch is provided in a control part, and when this night switch is turned on, control of a crime prevention mode will be performed. In this security mode, detection by the sensor is invalidated and only the signal from the light projector / receiver is valid. In a crime prevention mode such as at night, an alarm sound is generated when a light beam from the projector is blocked by an intruder.
JP 2003-166377 A

  In the conventional automatic door system, a crime prevention function is provided by generating an alarm sound when there is an unauthorized intruder, but it is merely configured to generate an alarm sound and physically It does not make it difficult for a suspicious person to enter.

  Therefore, the present invention has been made in view of such a point, and an object of the present invention is to make it difficult for a suspicious person to enter a room or escape an unauthorized intruder.

  In order to achieve the above-described object, the present invention is configured to drive and control a door opening / closing motor in the door closing direction when it is determined that the door is illegally opened when the crime prevention mode is switched. is there.

  Specifically, the invention of claim 1 opens and closes the door according to the detection results of the automatic door sensors provided on the indoor side and the outdoor side in order to detect a person or an object around the door opening. On the premise of an automatic door system provided with a controller for controlling a motor for the motor, the controller is configured to control the opening and closing of the door according to the detection result of each automatic door sensor, and the door being locked Is configured to be switchable to one of the operation modes of the crime prevention mode for determining whether the door is illegally opened, and when the door is illegally opened in the case of being switched to the security mode, Control the motor in the direction to close the door.

  In this invention, when it is determined that the door being locked is illegally opened when the crime prevention mode is switched, the control for driving the motor in the direction of closing the door is executed. If there is a suspicious person who wants to open the door, the motor is driven to close the door. As a result, when the door can be closed, unauthorized intrusion can be prevented in advance, and even if the door cannot be closed, it takes time to open the door so that people can enter the room indoors. it can.

  Further, the invention of claim 2 is for opening and closing the door according to the detection result of the automatic door sensor provided on each of the indoor side and the outdoor side in order to detect a person or an object around the door opening. On the premise of an automatic door system provided with a controller for controlling a motor, the controller operates in a normal mode for controlling the opening and closing of the door according to the detection result of each automatic door sensor, and the locked door is illegal. It is configured to be switchable to one of the operation modes of the crime prevention mode for determining whether or not the door has been opened, and when the operation mode is switched to the crime prevention mode, after determining that the door has been illegally opened, When the inner automatic door sensor detects a person or an object, the motor is controlled in a direction to close the door.

  In this invention, when it is determined that the door being locked is illegally opened when the crime prevention mode is switched to, and the indoor automatic door sensor detects a person or an object, the door is closed. Drive the motor. That is, this control is a control when it is determined that the door is illegally opened and a suspicious person has illegally entered the room. In this case, even if an unauthorized intruder who has entered the room tries to escape, the motor is controlled to drive in the door closing direction, so the door cannot be opened even if the door is opened, or until the door is opened. Can take time. As a result, it is possible to prevent unauthorized intruders from escaping to the outdoors or to allow time to escape. It is also possible to prevent another suspicious person from entering the room.

  The invention according to claim 3 is the automatic door system according to claim 1 or 2, wherein the controller is switched to the crime prevention mode and the controller is locked when the door is locked. Determines that the door is improperly opened when the signal from the door position detecting means for outputting according to the position of the door is in a predetermined state.

  In this invention, since it is determined whether or not the door is illegally opened in the crime prevention mode based on the output from the door position detecting means for outputting according to the door position, it is possible to more accurately determine whether or not the door is illegally opened. it can.

  According to a fourth aspect of the present invention, in the automatic door system according to the third aspect, the door position detecting means is a limit switch for detecting a closed position of the door.

  In the present invention, since it is determined whether the door is illegally opened based on the output from the limit switch for detecting the closed position, which is generally required when the automatic door is controlled to close, for example, a limit switch for door closing control is installed. When the present invention is applied to an automatic door system that has been used, it is possible to accurately determine whether or not the door is illegally opened without newly adding a dedicated sensor.

  According to a fifth aspect of the present invention, in the automatic door system according to the third aspect, the door detecting means is an encoder for detecting a position of the door in the opening / closing direction.

  In the present invention, since the unauthorized opening is determined based on the output from the encoder, it is possible to accurately determine whether or not the door is opened illegally based on a change in the output signal or the like. In addition, when the present invention is applied to an automatic door system having an encoder for door opening / closing control, the encoder for opening / closing control can be used. It is possible to accurately determine the unauthorized opening of the door without newly adding detection means.

  The invention of claim 6 is the automatic door system according to claim 3, wherein the controller is switched to the crime prevention mode, and the controller is locked when the door is locked. When the outdoor automatic door sensor detects a person or an object, it is determined that the unauthorized opening has occurred.

  When the security mode is switched, the outdoor automatic door sensor detects a person or an object, so the door is not opened. When the signal from the door position detecting means is in a predetermined state when the door is on, it can be determined that the door has been illegally opened by a person detected by the outdoor sensor. Therefore, according to the present invention, it is possible to more accurately determine whether or not the opening of the door in the crime prevention mode was an unauthorized opening.

  The invention according to claim 7 is the automatic door system according to claim 1 or 2, further comprising door position detecting means for outputting according to the position of the door, wherein the controller is switched to the crime prevention mode. In the case where the motor is controlled to close the door, the controller does not change the output of the door position detecting means over a predetermined time or opens the door. When the output changes, the motor control is temporarily stopped.

  In this invention, the motor is controlled so that the door is closed when there is an unauthorized intruder or the like when the crime prevention mode is switched. When it is not closed, the output from the door position detecting means may not change over a predetermined time. Further, even with this motor control, an unauthorized intruder may try to open the door and the door may move in the opening direction. In such a case, the motor is overloaded. Therefore, when the output from the door position detecting means does not change over a predetermined time or when the door moves in the opening direction, the motor control is stopped to prevent the motor from being overloaded. It is possible to prevent the motor from being damaged.

  The invention according to claim 8 is for opening and closing the door according to the detection results of the automatic door sensors provided on the indoor side and the outdoor side in order to detect a person or an object around the door opening. On the premise of an automatic door system provided with a controller for controlling a motor, the controller operates in a normal mode for controlling the opening and closing of the door according to a detection result of each automatic door sensor, and the closed door is illegal. It is configured to be switchable to one of the operation modes of the crime prevention mode for determining whether or not the door is opened, and when the operation mode is switched to the crime prevention mode, only the detection result of the indoor automatic door sensor is used. The door is controlled to open and close accordingly, and after determining that the door has been illegally opened, the indoor automatic door sensor is disabled and the door is closed. To control the motor.

  In the present invention, when the mode is switched to the crime prevention mode at night or the like, an indoor person can go outside, but an outdoor person cannot go indoors. In this crime prevention mode, after the door is opened by a suspicious person who is trying to enter the room, even if the indoor automatic door sensor detects a person or object, this detection is invalidated and the door is closed. The motor is driven in the direction of Therefore, even if an unauthorized intruder who has entered the room tries to open the door when he / she escapes, the door cannot be opened, or time can be taken until the door is opened. Thereby, during execution of the crime prevention mode, it is possible to prevent unauthorized intruders from escaping to the outdoors or to spend time until they escape. Note that “invalidating detection” includes, for example, turning off the automatic door sensor to prevent detection.

  As described above, according to the inventions according to claims 1 and 3 to 7, when the door is tampered with when it is switched to the crime prevention mode, the door driving motor is moved in the direction in which the door is closed. Because it controls, it can prevent unauthorized intrusion when the door can be closed, and even if the door cannot be closed, it takes time until a suspicious person who tries to intrude enters the room indoors be able to. As a result, it is possible to make it difficult for a suspicious person who intends to enter illegally to enter the room.

  Moreover, according to the invention which concerns on Claims 2-7, when it is judged that the door was illegally opened when it was switched to the crime prevention mode, and the sensor for indoor automatic doors detects a person or an object after that, a door will be Since the door drive motor is controlled in the closing direction, it is possible to prevent intruders from escaping to the outdoors or to take time to escape. As a result, it is possible to make it difficult for an unauthorized intruder to escape to the outdoors. It is also possible to prevent another suspicious person from entering the room.

  According to the eighth aspect of the invention, by switching to the crime prevention mode, an indoor person can go outside, but it can be controlled so that an outdoor person cannot go indoors. When it is determined that the door has been illegally opened in this crime prevention mode, the door drive motor is controlled in the direction in which the door closes, so that unauthorized intruders cannot escape to the outdoors or allow time to escape. It can be used. As a result, it is possible to make it difficult for an unauthorized intruder to escape to the outdoors.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1
As shown in FIG. 1, the automatic door system 10 according to the first embodiment includes a sliding door type door 12 and a door drive mechanism for controlling the opening and closing of the door 12, and an opening such as a building entrance. Is opened and closed by the door 12.

  The door drive mechanism is disposed above the opening. The door drive mechanism includes a motor 14 for opening and closing the door 12, and an endless drive belt 24 that travels as the motor 14 is driven. And an automatic door controller 40 for driving and controlling the motor 14. The automatic door controller 40 constitutes a controller referred to in the present invention, has a known microcomputer circuit and an input / output interface with an external device, and performs a control operation according to a microcomputer program.

  A driving pulley 20 is provided on the rotating shaft of the motor 14 via a speed reducer (not shown). The drive pulley 20 rotates integrally with the rotation shaft of the motor 14. A driving belt 24 is wound around the driving pulley 20 and the driven pulley 22, and the driving belt 24 travels according to the rotation of the rotating shaft of the motor 14.

  The motor 14 is a brushless DC motor. The output shaft of the motor 14 is provided with an encoder 15 (see FIG. 2) for detecting the position of the door 12 in the opening / closing direction. The encoder 15 constitutes a door position detecting means for outputting according to the position of the door 12. The encoder 15 is provided to perform opening / closing control of the door 12. The encoder 15 is a known encoder that outputs two sets of pulse signals according to the rotation of the motor 14. If these two sets of pulse signals are an A-phase pulse signal and a B-phase pulse signal, the encoder 15 determines the rotation direction of the motor rotation shaft depending on which of the A-phase pulse signal and the B-phase pulse signal is in the leading phase. And is configured to output a pulse signal corresponding to the rotation direction.

  A door hanger 26 is attached to the drive belt 24, and the door 12 is connected to the door hanger 26. The door hanger 26 is provided with a door wheel (not shown). The door hanger 26 is configured to linearly move on a rail (not shown) as the drive belt 24 travels.

  The door 12 is disposed at an opening such as a building entrance and moves along the guide rail 28. When the drive pulley 20 rotates with the rotation of the motor 14, the drive belt 24 travels, and the door 12 moves in the opening / closing direction of the door 12 by an amount corresponding thereto.

  A lock bolt type lock 30 is provided on the indoor side surface of the door 12 at the lower end of the door 12, while a lock receiver 31 configured to be engageable with the lock 30 is provided on the guide rail 28. It has been. The lock 30 engages with the lock receiver 31 when the door 12 is projected downward with the door 12 closed. When the door 12 is controlled to be opened and closed, the lock 30 is pulled upward, so that the door 12 is not obstructed. On the other hand, in order to lock the door 12, the lock 30 is projected downward. It can be locked by engaging with the receiver 31. The lock 30 may be configured to be electromagnetically lockable and unlockable by the automatic door controller 40, or may have a simple mechanical configuration so that a person operates the locking and unlocking. In the figure, 33 is a fixed door. FIG. 1 shows a state in which the door 12 is lifted for convenience and removed from the lock receiver 31 with the lock 30 protruding downward.

  The automatic door system 10 is provided with an indoor sensor 35, an outdoor sensor 36, and a mode switch 16.

  The indoor side sensor 35 and the outdoor side sensor 36 each constitute an automatic door sensor. The indoor side sensor 35 is disposed on the indoor side of the door 12, while the outdoor side sensor 36 is disposed on the outdoor side of the door 12. These sensors 35 and 36 are of an infrared reflection type, and are configured to output a detection signal when it is detected that a person or an object to be detected exists in a predetermined area on the indoor side or the outdoor side of the door 12. ing. In addition to the infrared reflection type, it is also possible to use a mechanical switch such as a mat switch, a pyroelectric type, or a type utilizing radio waves or images.

  The mode change switch 16 constitutes a switching means for switching the control mode of the automatic door controller 40, and can select a normal mode or a crime prevention mode, and a control signal corresponding to the selected control mode. Is configured to output. The control mode may be switched manually or may be automatically switched according to the time zone by a timer not shown.

  As shown in FIG. 2, the automatic door controller 40 is output from the detection signal output from the indoor side sensor 35 and the outdoor side sensor 36, the pulse signal output from the encoder 15, and the mode change switch 16. A control signal is input. In FIG. 1, the exchange of signals is indicated by white arrows for convenience.

  The automatic door controller 40 is configured to be able to switch between normal mode control and security mode control. The automatic door controller 40 is configured to execute control in the normal mode when the normal mode is selected in the mode changeover switch 16. In the control in the normal mode, the motor 14 is driven and controlled to open and close the door 12 according to the detection results of the indoor and outdoor sensors 35 and 36. That is, in the control in the normal mode, when the detection target is detected by the sensors 35 and 36, the door 12 is opened.

  The automatic door controller 40 is configured to execute the security mode control when the security mode is selected by the mode changeover switch 16. In the control in the crime prevention mode, the control for maintaining the door 12 in the closed state is executed even when the detection target is detected by the indoor and outdoor sensors 35 and 36. In other words, the security mode control is executed when the door is shut, such as when there is no person indoors, and the detection target is detected by the sensors 35 and 36 during the execution of this control. However, the door 12 is not opened.

  The automatic door controller 40 is configured to determine the unauthorized opening of the door 12 by detecting a change in the pulse signal from the encoder 15. Specifically, it is determined that the door 12 has been illegally opened when it is detected that the door 12 has been opened from a predetermined position based on the change in the pulse signal. Although the predetermined position is variable, it can be, for example, about 3 cm from the closed position.

  Further, it is determined that the door 12 has been illegally opened when it is detected that the number of times that the door 12 has moved a predetermined distance or more from the opening direction to the closing direction is a predetermined number of times within a predetermined time due to a change in the pulse signal. You may comprise as follows. In this way, even before the door 12 is actually opened, it can be detected that a suspicious person is trying to open the door 12 with a bar or the like. Further, by setting the number of times or more, the influence of disturbance such as wind can be eliminated. Note that the threshold value of the number of times of change can be appropriately determined according to the resolution of the encoder 15, the sampling period, and the installation environment. For example, when the resolution of the encoder 15 is about 1 mm, if the movement of 5 mm or more is performed three times or more within 3 seconds, it can be determined that the unauthorized release has occurred.

  The automatic door controller 40 also detects that the door 12 is open when the locked door 12 is opened while the outdoor sensor 36 detects a detection target (person or object) during execution of the security mode control. Is configured to execute the control of driving the motor 14 in the direction of closing the door 12. In other words, in the crime prevention mode, control for determining whether the locked door 12 is illegally opened is executed. That is, during the control of the crime prevention mode, the door 12 should not be opened even if the detection target (person or object) is detected by the indoor and outdoor sensors 35 and 36. However, when the opening of the door 12 is detected in spite of this, the motor 14 is driven and controlled in a direction to close the door 12 by recognizing that the door 12 has been opened improperly.

  The automatic door controller 40 is configured to make a determination based on a change in the pulse signal from the encoder 15 when determining whether or not it is illegally opened, so that whether or not it is illegally opened can be determined more accurately. . That is, since the resolution of the encoder 15 is about 1 mm, the pulse signal can change even when the door 12 is shaken by wind or the like. However, by setting a threshold value for the amount of change in the pulse signal in advance, it is possible to prevent malfunction due to such disturbance. Further, when determining whether or not it is unauthorized opening, the automatic door controller 40 takes into account the detection by the outdoor side sensor 36. As a result, it is possible to more accurately determine whether or not an unauthorized opening has occurred.

  When the indoor side sensor 35 detects the detection target after the door 12 is opened during the execution of the control in the crime prevention mode, the automatic door controller 40 performs the control to drive the motor 14 in the direction to close the door 12. It is configured. That is, the door 12 should not be opened during the security mode control. However, when the door 12 is detected to be opened, it is determined that the closed door 12 has been illegally opened, and the indoor side It is determined that an unauthorized intruder has been detected by the sensor 35, and the motor 14 is controlled so as to close the door 12.

  The automatic door controller 40 controls the motor 14 when the pulse signal output from the encoder 15 does not change over a predetermined time after driving the motor 14 in the direction in which the door 12 is closed after the door 12 is illegally opened. The driving is stopped. Further, the automatic door controller 40 drives and controls the motor 14 in the direction in which the door 12 is closed after the door 12 is illegally opened, and then the door 12 still moves in the opening direction of the door 12 for a predetermined time. The driving of the motor 14 is stopped. That is, in these cases, since it is considered that an excessive load is applied to the motor 14, the driving of the motor 14 is stopped.

  Further, the automatic door controller 40 performs control to drive the motor 14 in the door closing direction after the door 12 is illegally opened, and when the door 12 is closed or when the lock 30 hits the lock 31 and stops, Thereafter, the drive control of the motor 14 in the direction in which the door 12 is further closed is continuously executed. In other words, after the door 12 is illegally opened, after the door 12 is closed, the motor 14 is further driven and controlled in the door closing direction so that an unauthorized intruder can hardly open the door 12. This also makes it take time for an intruder to open the door 12.

  The automatic door controller 40 is configured to output an abnormality detection signal when executing control to drive the motor 14 in the direction of closing the door 12 in the security mode control.

  The automatic door system 10 is provided with a communication controller 50. The communication controller 50 is configured to be able to transmit and receive with the automatic door controller 40, and is configured to output an alarm signal to the monitoring center 52 of the building where the automatic door system 10 is provided. This alarm signal is output when the abnormality detection signal output by the automatic door controller 40 is input. The monitoring center 52 notifies the security company 54 when an alarm signal is input from the communication controller 50. Thus, when there is an intruder indoors, the security company 54 is promptly informed.

  Next, the control operation of the automatic door system 10 will be described. First, in the normal mode control, when the outdoor side sensor 36 detects a detection target such as a person or an object, the sensor 36 outputs a detection signal, and the automatic door controller 40 receives the detection signal. The motor 14 is driven and controlled in a direction to open the door 12.

  On the other hand, when the indoor side sensor 35 detects a detection target such as a person, a detection signal is output from the sensor 35. When the detection signal is input, the automatic door controller 40 moves the motor in a direction to open the door 12. 14, the door 12 is opened. That is, in the normal mode control, the door 12 is opened and closed according to the detection results of the indoor and outdoor sensors 35 and 36.

  Next, the control operation in the security mode will be described with reference to FIG. 3 shows time t on the horizontal axis, (a) shows the detection signal of the outdoor side sensor 36, (b) shows the detection signal of the indoor side sensor 35, and (c) shows the A-phase pulse of the encoder 15. (D) represents a B-phase pulse signal of the encoder 15, and (e) represents a motor control signal output from the automatic door controller 40 to the motor 14.

  During the execution of the control in the security mode, the door 12 is locked by the lock 30 being engaged with the lock receiver 31. In this security mode, if there is a suspicious person who stops in front of the door 12 and tries to enter the room, for example, the outdoor sensor 36 detects this suspicious person at time t1 and outputs a detection signal (a). In other words, the detection target is detected by the outdoor side sensor 36 at this time. When the suspicious person lifts the door 12 with a bar or the like and tries to remove the lock 30 from the lock receiver 31, the drive belt 24 bends, and the output signal from the encoder 15 changes. When the door 12 is moved in the opening direction along the guide rail 28, the A-phase pulse signal and the B-phase pulse signal of the encoder 15 change (c, d). At this time, after the A-phase pulse signal is output at time t2, the B-phase pulse signal is output at time t3, so that it is determined that the door 12 is moving in the opening direction.

  When the outdoor sensor 36 detects a suspicious person or a bar over a predetermined time, if the door 12 opens more than a predetermined opening and the pulse signal of the encoder 15 is output more than a predetermined pulse, the The door controller 40 determines that there has been an unauthorized opening. Since the detection status of the outdoor side sensor 36 is taken into consideration in the determination of the unauthorized opening, it is possible to more accurately determine whether the opening is unauthorized.

  At time t4, control for driving the motor 14 in the direction in which the door 12 is closed is started (e). At this time, the automatic door controller 40 issues a control command so that the motor 14 is driven at the maximum rating. In this embodiment, when the detection target is detected over a predetermined time (time t1 to t5) by the outdoor side sensor 36, drive control of the motor 14 is executed. Thereby, it is possible to accurately determine whether or not the outdoor side sensor 36 is a suspicious person.

  At the initial output stage of this control command, the door 12 still moves in the opening direction (time t4 to t6) (c, d), but thereafter the driving force of the motor 14 is gradually increased by the control signal from the automatic door controller 40. As the force increases, the force to open the door 12 by a suspicious person and the force to close the door 12 by the motor 14 are antagonized. At times t6 to t7 at this time, the door 12 is not moved despite the drive of the motor 14 in the door closing direction, and the motor 14 is overloaded. When the state in which an excessive load is applied to the motor 14 as described above is continued for a predetermined time T1, control for stopping the driving of the motor 14 is executed. Thereby, the overload to the motor 14 is suppressed.

  When the drive of the motor 14 is stopped, the door 12 can be further opened. For this reason, the suspicious person further opens the door 12 (time t8 to t9). Thereby, a suspicious person can penetrate | invade indoors. When this suspicious person is detected as a detection target by the indoor sensor 35, the sensor 35 outputs a detection signal (b) (time t10 to t11). When a predetermined time T2 has elapsed from time t11 when the output of the detection signal by the indoor side sensor 35 is stopped, the automatic door controller 40 starts control to drive the motor 14 in the direction in which the door 12 is closed at time t12. To do. At this time, a control command is output so as to drive the motor 14 with an output smaller than the maximum rated output. In other words, at this time, the door 12 is in an open state, but it is considered that the suspicious person who has entered after moving the predetermined time T2 has moved to another place indoors. Since the suspicious person does not try to prevent the door 12 from closing, the motor 14 is driven with an output smaller than the maximum rated output. By doing so, it is possible to prevent the lock receiver 31 and the lock 30 from being damaged due to the lock 30 hitting the lock receiver 31 at a high speed.

  Then, the door 12 starts to close from time t13, and at time t14 when the door 12 is closed by a predetermined opening, the output of the motor 14 is reduced and the door 12 is further moved in the closing direction. Then, when the lock 30 of the door 12 hits the lock receiver 31 at time t15, the operation stops. For this reason, the door 12 is not completely closed. At this time, even when the door 12 is stopped, the motor 14 continues to be driven with a small output. And even if a suspicious person who has entered the room tries to open the door 12 with his / her hand held in the unclosed portion of the door 12, the door 12 has a pressing force in the closing direction of the door 12. 12 is difficult to open. Although not shown in FIG. 3, when the door 12 is subsequently opened by a predetermined opening by a suspicious person, it is determined that the door 12 has been illegally opened again. Drive control is performed in the door closing direction. Thereby, it becomes difficult to open the door 12, and a suspicious person can be further troublesome.

  Next, the effect by the automatic door system 10 which concerns on this Embodiment 1 is demonstrated.

  In the automatic door system 10, when it is determined that the door 12 has been opened by a predetermined opening degree during execution of the crime prevention mode and there has been unauthorized opening, control for driving the motor 14 in the direction to close the door 12 is executed. When there is a suspicious person who attempts to illegally enter the room, even if the door is opened by a predetermined opening by this person, the motor 14 is driven so as to close the door 12. As a result, when the door 12 does not open, unauthorized intrusion can be prevented, and even if the door 12 cannot be closed, it takes time to open the door 12 so that a person can enter the room. Can be made.

  In the first embodiment, after the door 12 is illegally opened during the execution of the crime prevention mode and the suspicious person enters the room, the indoor sensor 35 detects the suspicious person and closes the door 12. Since the motor 14 is driven, when a suspicious person who has forcibly entered the house escapes, even if the door 12 is opened, the door 12 cannot be opened, or time can be taken until the door 12 is opened. As a result, it is possible to prevent unauthorized intruders from escaping to the outdoors or to allow time to escape. It is also possible to prevent another suspicious person from entering the room.

  Further, in the first embodiment, since the unauthorized opening is determined based on the output from the encoder 15, it is possible to accurately determine whether or not the door 12 has been opened illegally by changing the output signal or the like. Since the door 15 is determined to be opened using the encoder 15 for controlling the opening and closing of the door 12, a dedicated door position detecting means for determining unauthorized opening is not newly added. Unauthorized opening of the door 12 can be determined. In addition, in the crime prevention mode in which the door 12 is not opened even if the detection target is detected by the indoor and outdoor sensors 35 and 36, the door 12 is illegally opened when the output from the encoder 15 changes by a predetermined amount. Since the determination is made, it is possible to accurately determine that there has been an unauthorized intruder. Further, the door 14 is controlled to close the door 12 when the door 12 is opened when a suspicious person who is about to enter the indoor space is detected by the outdoor sensor 36 for a predetermined time. It is possible to control the drive of the motor 14 after more accurately determining whether the twelve 12 has been illegally opened.

  In the first embodiment, while the crime prevention mode is being executed, the motor 14 is controlled so that the door 12 is closed when there is an unauthorized intruder or the like. This motor control also causes resistance by the unauthorized intruder. When the door 12 is not closed, the output from the encoder 15 does not change over a predetermined time or the output changes in the direction in which the door 12 opens. Therefore, when the output from the encoder 15 does not change over a predetermined time or when the output changes in the direction in which the door 12 opens, the control of stopping the motor 14 is performed, thereby overloading the motor 14. It is possible to prevent the motor 14 from being damaged and to prevent the motor 14 from being damaged.

  Further, in the first embodiment, after the control for driving the motor 14 in the direction in which the door 12 is closed is performed, the drive control of the motor 14 in the direction in which the door 12 is further closed is continued after the door 12 is closed. Therefore, when an intruder in the room tries to escape to the outdoors, it can be troublesome to open the door 12.

<< Embodiment 2 >>
In the crime prevention mode according to the second embodiment of the present invention, an indoor person can go outside, but an outdoor person cannot go indoors. That is, the crime prevention mode in the second embodiment is control when the door 12 is not mechanically locked. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the crime prevention mode according to the second embodiment, the motor 14 is driven and controlled to open and close the door 12 according to the detection result of the detection target by the indoor sensor 35, while the detection target is detected by the outdoor sensor 36. Then, control for maintaining the door 12 in the closed state is executed. That is, this control is a control for preventing an indoor person from leaving the room at night or the like while preventing entry from the outside.

  When it is determined that the door 12 has been illegally opened during the execution of the security mode control, the automatic door controller 40 invalidates the detection result of the indoor side sensor 35 thereafter and closes the door 12 in the direction of closing the motor. 14 is configured to execute the control for driving 14. That is, in the crime prevention mode according to the second embodiment, the door 12 is controlled to be opened and closed based on the detection result of the indoor sensor 35. Therefore, when there is an unauthorized intruder, the indoor sensor 35 detects this person. If it does, the door 12 will be opened. Therefore, when it is determined that the door 12 has been illegally opened, the subsequent detection result by the indoor sensor 35 is invalidated. Here, invalidating the detection result by the indoor side sensor 35 means that control for opening the door 12 is not executed even when the indoor side sensor 35 detects a person or the like, or power supply to the indoor side sensor 35 is performed. The indoor side sensor 35 is prevented from detecting a person or the like.

  In the automatic door controller 40, during the execution of the security mode control, the outdoor sensor 36 detects the detection target for a predetermined time, and when the door 12 is opened at this time, the door 12 is illegally opened. It is configured to judge. In other words, in the crime prevention mode, control for determining whether or not the closed door 12 is illegally opened is executed. During the execution of the security mode control, the door 12 should not be opened even if the outdoor side sensor 36 detects the detection target. However, when the door 12 is opened, the door 12 is opened by a suspicious person. It is determined that the unauthorized opening has occurred, and it is determined that the intruder is detected by the indoor sensor 35. Further, in determining whether the door is illegally opened, the automatic door controller 40 takes into account the detection by the outdoor side sensor 36. That is, since the detection of the movement of the door 12 and the detection of the person by the outdoor side sensor 36 are performed, it can be determined more accurately whether or not the door 12 is illegally opened.

  The automatic door controller 40 is controlled to drive the motor 14 in the door closing direction after the door 12 is illegally opened, and when the door 12 is closed, the motor 14 is further moved to close the door 12 thereafter. The drive control is continuously executed.

  Further, the automatic door controller 40 is configured to output an abnormality detection signal when executing control for driving the motor 14 in the direction to close the door 12 in the security mode control.

  Next, the control operation in the crime prevention mode in the second embodiment will be described with reference to FIG. In this security mode, for example, when the indoor sensor 35 detects a detection target at time t21, a detection signal is output from the sensor 35. When this detection signal is input, the automatic door controller 40 turns the door 12 off. The motor 14 is driven and controlled in the opening direction, and thereby the door 12 is opened (time t22 to t23). As a result, the indoor person can leave the room. Although not shown, the door 12 is closed when the person goes outside.

  For example, when the outdoor sensor 36 detects a detection target at time t24, the sensor 36 outputs a detection signal. However, the automatic door controller 40 does not move the motor in the door opening direction even if this detection signal is input. 14 drive control is not performed. Thereby, even if it is a time when the outdoor side sensor 36 detects a detection target, the closed state of the door 12 is maintained.

  In this security mode control, for example, at time t25, the outdoor sensor 36 detects a detection target (suspicious person) entering the room for a predetermined time, and when the door 12 is opened at this time (time t26 to t27), the automatic door controller 40 determines that the door 12 has been illegally opened. Further, after the automatic door controller 40 determines that the door 12 has been tampered with, the suspicious person is detected by the indoor side sensor 35 and the detection signal output from the indoor side sensor 35 is invalidated. (Time t28). As a result, even if a detection signal is input from the indoor sensor 35 to the automatic door controller 40, the door 12 is not opened.

  Then, the automatic door controller 40 invalidates the detection of the indoor side sensor 35 and executes control for driving the motor 14 in the direction to close the door 12 (time t29). Therefore, even if the indoor sensor 35 detects a suspicious person who has entered the room, the door 12 is not opened, and even if the suspicious person opens the door 12 and tries to escape, the door 12 is pressed in the closing direction. Therefore, the door 12 cannot be opened easily. As a result, it can be made troublesome for the suspicious person to open the door 12.

  In the second embodiment, by executing the security mode control at night or the like, it is possible to prevent people from entering from outside, while setting the automatic door system 10 so that indoor people can leave the room. Can do. Then, after the outdoor sensor 36 detects a suspicious person during the execution of the crime prevention mode and the door 12 is illegally opened by a suspicious person who is about to enter the room, the detection by the indoor sensor 35 is invalidated. The motor 14 is driven in the direction to close the door 12. For this reason, when a suspicious person who forcibly invades indoors escapes, the door 12 cannot be opened even if the door 12 is opened, or the opening of the door 12 can be troublesome. Thereby, when there is an intruder during execution of the control in the crime prevention mode, it is possible to prevent the intruder from escaping to the outdoors or to try to escape.

  In the second embodiment, the drive control of the motor 14 in the direction of closing the door 12 is continued even after the door 12 is closed after the control of driving the motor 14 in the direction of closing the door 12 is performed. Therefore, when an intruder in the room tries to escape to the outdoors, it can be time-consuming to open the door 12.

Other configurations, operations, and effects are the same as those of the first embodiment.
<< Other Embodiments >>
In each of the embodiments described above, in the security mode control, the motor control is performed to close the door 12 after a predetermined time has elapsed since the output of the detection signal by the indoor sensor 35 is stopped. For example, the motor control for closing the door 12 immediately after the output of the detection signal by the indoor sensor 35 is stopped may be performed.

  In each of the above embodiments, the door 12 is illegally opened based on a change in the pulse signal output from the encoder. Instead, a limit switch (door position) is used for opening / closing control of the door 12. When the present invention is applied to an automatic door system provided with detection means), it may be configured to determine whether the door 12 is illegally opened based on a control signal output from the limit switch. For example, since the limit switch is configured to output a control signal when the door 12 is in the closed position, the door 12 is opened when the output of the control signal by the limit switch is stopped during the security mode control. It is good also as a structure which judges that it was made.

  In each of the above embodiments, the automatic door sensor is configured by the sensors 35 and 36 that detect whether or not there is a detection target in a predetermined area. Instead, the indoor side sensor 35 is configured by a touch sensor. May be. The touch sensor is installed on the door 12 and is configured to output a door opening signal for opening the door 12 when pressed by a person, for example. In this case, in the crime prevention mode control in the first embodiment, the door 12 is maintained in the closed state regardless of the detection result of the outdoor and indoor automatic door sensors. Then, when the door 12 is opened during the execution of the crime prevention mode, it may be determined that the door 12 is illegally opened. On the other hand, in the control of the crime prevention mode in the second embodiment, the door 12 is opened when the indoor sensor 35 outputs a door opening signal, while the door 12 is detected even if the outdoor sensor 36 detects a detection target (person or object). Is kept closed. And while performing this control, what is necessary is just to set it as the structure which judges that the outdoor side sensor 36 detected the detection object and was opened illegally when the door 12 was opened.

It is a figure showing roughly the whole automatic door system composition concerning Embodiment 1 of the present invention. It is a block diagram of the automatic door system which concerns on Embodiment 1 of this invention. It is a characteristic view which shows an example of control operation | movement of the crime prevention mode in Embodiment 1 of this invention. It is a characteristic view which shows an example of control operation | movement of the crime prevention mode in Embodiment 2 of this invention.

Explanation of symbols

12 door 14 motor 15 encoder (door position detection means)
35 Indoor sensor (automatic door sensor)
36 Outdoor sensor (automatic door sensor)
40 Automatic door controller (controller)

Claims (8)

In order to detect a person or an object around the door opening, a controller for controlling a motor for opening and closing the door according to the detection result of the automatic door sensor provided on the indoor side and the outdoor side is provided. In automatic door systems,
The controller is one of a normal mode for controlling the opening and closing of the door according to the detection result of each automatic door sensor and a security mode for determining whether or not the locked door is illegally opened. It is configured to be switchable to the operation mode,
An automatic door system that controls the motor in a direction to close the door when it is determined that the door has been tampered with when it is switched to the security mode. In order to detect a person or an object around the door opening, a controller for controlling a motor for opening and closing the door according to the detection result of the automatic door sensor provided on the indoor side and the outdoor side is provided. In automatic door systems,
The controller is one of a normal mode for controlling the opening and closing of the door according to the detection result of each automatic door sensor and a security mode for determining whether or not the locked door is illegally opened. It is configured to be switchable to the operation mode,
When it is switched to the crime prevention mode, when it is determined that the door has been tampered with and the indoor automatic door sensor detects a person or an object, the motor is controlled to close the door. An automatic door system characterized by that. When the controller is switched to the crime prevention mode and the door is locked,
3. The automatic door according to claim 1, wherein the controller determines that the door is illegally opened when a signal from a door position detection unit that outputs in accordance with the position of the door is in a predetermined state. 4. system.   The automatic door system according to claim 3, wherein the door position detecting means is a limit switch for detecting a closed position of the door.   The automatic door system according to claim 3, wherein the door detection means is an encoder for detecting a position of the door in the opening / closing direction. When the controller is switched to the crime prevention mode and the door is locked,
The automatic door system according to claim 3, wherein the controller determines that the unauthorized opening is performed when the outdoor automatic door sensor detects a person or an object. Comprising door position detecting means for outputting according to the position of the door;
When the controller is switched to the crime prevention mode and the motor is controlled to close the door,
The controller temporarily stops the motor control when the output of the door position detecting means does not change over a predetermined time or when the output changes in a direction in which the door opens. The automatic door system according to claim 1 or 2. In order to detect a person or an object around the door opening, a controller for controlling a motor for opening and closing the door according to the detection result of the automatic door sensor provided on the indoor side and the outdoor side is provided. In automatic door systems,
The controller is either one of a normal mode for controlling opening / closing of the door according to a detection result of each of the automatic door sensors and a security mode for determining whether the closed door is illegally opened. It is configured to be switchable to the operation mode,
When it is switched to the crime prevention mode, the door is controlled to open and close only according to the detection result of the indoor automatic door sensor. The automatic door system is characterized in that the automatic door sensor is disabled and the motor is controlled to close the door.

Images