JP2012197170A - Safety device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device of an elevator capable of urging leaving to a user, by detecting that the user enters a car in a maintenance and inspection by using an existing facility arranged in the elevator.SOLUTION: The safety device unit 50 is mounted to the elevator 10 having a multi-beam door sensor 31 for detecting the user of passing through a boarding-alighting port in an ordinary operation mode, and includes a take-in means 51 for taking in detection information by starting the multi-beam door sensor 31 in an inspection operation mode, and a notifying means 52 for outputting a predetermined warning in the car 12 when confirming the user of passing through the boarding-alighting port based on the taken-in detection information.

Description

  The present invention relates to an elevator safety device.

  The elevator is regularly serviced. When performing the maintenance inspection, the operation mode is switched from the normal operation mode in which the car is automatically moved up and down by a user operation of the hall call button or the like to the inspection operation mode for performing a special lifting operation in the maintenance inspection. Switching from the normal operation mode to the inspection operation mode is performed, for example, by operating an inspection switch installed on the in-car operation panel.

  Generally, in the inspection operation mode, when the car is stopped at the landing, the car door is opened unless the inspector performs an operation for closing the car door in the car or the machine room. Therefore, during the maintenance and inspection of the elevator, a sign board and an L-shaped display board are installed at the hall to inform the user that the maintenance and inspection are in progress and prevent the user from getting into the car. However, there are users who do not notice sign boats and get into the car.

  In view of such a situation, for example, Patent Document 1 discloses a maintenance switch that is operated during maintenance work of an elevator, a boarding detector that operates when there is a person in the elevator car, and a car operation panel. There is disclosed an elevator maintenance work device including operation detecting means that operates when a person approaches beyond a predetermined position, an alarm provided in a car, and an alarm control device. Patent Document 1 discloses a photoelectric sensor that is installed as a boarding detector on the ceiling of a car and operates when a person is in the car.

Japanese Patent Laid-Open No. 4-7282

  However, the apparatus disclosed in Patent Document 1 has a problem from the viewpoint of equipment cost because it includes a dedicated boarding detector used during maintenance and inspection. In addition, since the elevator facilities increase, there is a problem that the load of maintenance and inspection work increases.

  That is, the object of the present invention is to detect that a user has entered the car at the time of maintenance inspection using existing equipment installed in the elevator, and to prompt the user to leave. It is to provide a safety device for an elevator.

  The elevator safety device according to the present invention includes a multi-beam door sensor that detects a user who passes through the entrance / exit in the normal operation mode, and is installed in the elevator that is switched from the normal operation mode to the inspection operation mode during maintenance inspection. And, when the multi-beam door sensor is activated in the inspection operation mode and means for capturing the detection information and the user passing through the entrance / exit based on the detected detection information are confirmed, a predetermined warning is issued. And means for outputting in the car.

  Alternatively, the elevator safety device according to the present invention is a safety device mounted on an elevator that includes a scale device that detects the load on the car in the normal operation mode and can be switched from the normal operation mode to the inspection operation mode during maintenance inspection. Then, when the weighing apparatus is started in the inspection operation mode and the detection information is taken in, and when an increase in the carrying load of the car is confirmed based on the taken detection information, a predetermined warning is given to the car. And outputting means.

  Alternatively, the elevator safety device according to the present invention is a safety device mounted on an elevator that includes a security camera that captures an image in a car in the normal operation mode and that can be switched from the normal operation mode to the inspection operation mode during maintenance inspection. Then, the security camera is activated in the inspection operation mode and means for capturing the detection information, and when a user in the car is confirmed based on the detected detection information, a predetermined warning is given in the car. And a means for outputting the data.

  In the elevator safety device according to the present invention, the elevator is provided with an inspection switch for switching the operation mode between the normal operation mode and the inspection operation mode, and the detection information capturing means is an inspection switch. It is preferable to start or stop the capture of the detection information in conjunction with this operation.

  In addition, the elevator safety device according to the present invention can include a power source that supplies power to the safety device and the components of the elevator involved in the operation thereof when the main power of the elevator is shut off.

  According to the elevator safety device of the present invention, the existing equipment installed in the elevator is used to detect that the user has entered the car at the time of maintenance and inspection, and the user is allowed to leave. It is possible to prompt.

It is a figure which shows schematic structure of the elevator safety apparatus which is embodiment of this invention, and the elevator by which a safety device is mounted. It is a figure which shows the hall of the elevator of FIG. It is a flowchart which shows the control procedure by the safety device of the elevator which is embodiment of this invention.

  Hereinafter, embodiments of an elevator safety device according to the present invention will be described in detail with reference to the drawings. As an embodiment of an elevator safety device according to the present invention, a safety device unit 50 incorporated in the control device 14 of the elevator 10 is illustrated. However, the embodiment of the present invention is not limited to this, and may be, for example, a safety device including a hardware separate from the control device 14 or a safety device including a dedicated power source.

  In the embodiment, the elevator 10 in which the multi-beam door sensor 31, the scale device 32, and the security camera 33 are installed in the car 12 is illustrated. However, the elevator to which the present invention is applicable is not limited to this, and may be an elevator in which either one or both of the multi-beam door sensor 31 and the security camera 33 are not installed.

  In this specification, the “entrance / exit” means an entrance to the car 12 formed when the car 12 is stopped at the landing 13. In other words, the opening of the car 12 coincides with the opening of the hall 13, and is an entrance that allows the car 12 and the hall 13 to come and go when the door is opened. Further, in this specification, the term “door” means the car door 19 and the landing door 26.

  First, with reference to FIG.1 and FIG.2, the structure of the elevator 10 and the safety device unit 50 is demonstrated in detail. FIG. 1 is a diagram illustrating a schematic configuration of an elevator 10 including a safety device unit 50. As shown in FIG. 1, the safety device unit 50 is a system mounted on the elevator 10 and constitutes a part of the elevator 10. Specifically, it is configured as a part of the control device 14 that controls the operation of the entire elevator 10.

  The safety device unit 50 activates the multi-beam door sensor 31 used in the normal operation mode in the inspection operation mode, takes in the detection information thereof, and sets a warning in advance in the car 12 based on the taken-in detection information. Has a function of outputting. The warning that is output prompts the user who has entered the car 12 to leave the car 12. Here, the normal operation mode is an operation mode in which the car 12 automatically moves up and down based on the operation of the in-car operation panel 20 and the landing operation panel 27. On the other hand, the inspection operation mode is an operation mode for performing a special lifting operation in maintenance inspection. In the inspection operation mode, for example, low-speed operation and manual operation suitable for inspection work are possible without responding to car call registration.

  That is, the safety device unit 50 detects that the user has entered the car 12 by using the multi-beam door sensor 31 that is the existing equipment of the elevator 10 at the time of maintenance and inspection of the elevator 10. In contrast, it has a function of prompting the user to leave. Hereinafter, after briefly explaining the configuration of the elevator 10, the configuration of the safety device unit 50 will be described in more detail.

  As shown in FIG. 1, the elevator 10 is comprised in the hoistway 11 by the raising / lowering mechanism part which raises / lowers between the platforms 13 in which the car 12 was installed in each floor, and the control apparatus 14 which controls the operation | movement. Has been.

  The hoistway 11 is an elevating passage for the car 12. A pit (not shown) is provided at the lowermost part of the hoistway 11, and a machine room 15 is provided at the upper part of the hoistway 11. In the machine room 15, a hoisting machine 16 and a control device 14 for raising and lowering the car 12 are installed. The sheave of the hoisting machine 16 is hung by a main rope 18 having one end connected to the upper portion of the car 12 and the other end connected to a counterweight 17. Therefore, by driving the hoisting machine 16, the main rope 18 is hoisted or sent out and the car 12 moves up and down in the hoistway 11.

  The car 12 has an indoor space in which a user can get in, and moves up and down in the hoistway 11 by driving the hoisting machine 16. On the wall surface of the car 12 that faces the landing 13, an opening that forms the entrance is formed. The car 12 includes a car door 19 that opens and closes the opening, a car door opening and closing device (not shown) that opens and closes the car door 19, and the like. The car 12 has an in-car operation panel 20 (usually installed on the same wall surface as the car door 19 but shown on a separate wall surface for convenience of explanation) connected to the control device 14, and a multi-beam. A door sensor 31, a scale device 32, a security camera 33, and the like are installed.

  The in-car operation panel 20 is installed on a wall surface in the car 12, and includes a destination floor button 21, a door opening / closing button 22, an in-car indicator 23, an interphone 24, an inspection switch 25 stored in the key box, and the like. Have. The interphone 24 has a telephone call device including a microphone and a speaker. A user in the car 12 can use the interphone 24 to talk to a supervisor in the management room, for example. The speaker of the intercom 24 can also be used as a device that outputs a voice announcement by the function of the safety device unit 50.

  The inspection switch 25 is a switch for switching the operation mode of the elevator 10 from the normal operation mode to the inspection operation mode or from the inspection operation mode to the normal operation mode, and performs an independent switch that does not respond to the hall call registration or manual operation. For example, a manual switch can be used. In addition to the inspection switch 25, the key box includes an up / down operation unit used during manual operation, an open / close button for opening / closing the door during manual operation, a light switch for turning on / off the car lighting device, and the like. is set up.

  The multi-beam door sensor 31 is a sensor that detects a user passing through the entrance and exit, and the detection information is transmitted to the control device 14. When a user is detected by the multi-beam door sensor 31, for example, the closed door is reversed by the function of the normal operation mode control unit 30 described later. The multi-beam door sensor 31 is installed, for example, in the vicinity of the door contact surface of the car door 19 and on the surface facing the outside of the car door 19, that is, the surface facing the landing door 26. In general, the multi-beam door sensor 31 includes a plurality of projectors that project infrared beams and a plurality of receivers that receive the infrared beams projected from the projectors. A light projector is disposed on the side car door 19, and a light receiver is disposed on the other side car door 19.

  FIG. 2 is a view showing the hall 13 of the elevator 10. As shown in FIG. 2, the projector of the multi-beam door sensor 31 projects a plurality of infrared beams (chain lines in FIG. 2) along the lateral direction of the entrance / exit. In FIG. 2, a plurality of infrared beams are projected in parallel to each other, but they may be projected so as to cross each other, and the number of infrared beams is appropriately changed. The multi-beam door sensor 31 outputs, for example, a detection signal from the light receiver to the control device 14 when the infrared beam projected from the light projector is blocked and does not reach the corresponding light receiver. In FIG. 2, the projector is illustrated as being installed on the door contact surface of the car door 19, but in general, it is installed on the surface of the car door 19 that faces the landing door 26.

  The scale device 32 is a device that detects the load on the car 12, and the detection information is transmitted to the control device 14. For example, when the loaded load detected by the scale device 32 exceeds an allowable range, the function of the normal operation mode control unit 30 outputs an announcement of over capacity, and the elevator 12 is prohibited from ascending / descending. Although FIG. 1 illustrates the weighing device 32 installed at the four corners under the floor of the car 12, a weighing device that detects the load from the displacement of the shackle rod may be used. Note that the scale device 32 outputs, for example, load load detection information to the control device 14 every predetermined time.

  The security camera 33 is a device that captures images in the car 12. The security camera 33 has, for example, a human sensor, and records video of a certain time before and after the user is detected along with the date and time. The security camera 33 transmits the detection information to a recorder installed on the car 12, for example.

  The landing 13 is a place for getting on and off the car 12, and is provided on each floor. On the wall surface of the landing 13, an opening that forms the entrance is formed, and a landing door 26 that opens and closes the opening is installed. Further, as shown in FIG. 2, a hall operation panel 27 connected to the control device 14 is installed on the wall surface of the hall 13. The hall operation panel 27 includes, for example, a hall call button 28 and a hall indicator 29.

  The control device 14 is a device for uniformly controlling the operation of each element constituting the lifting mechanism. The control device 14 includes a normal operation mode control unit 30 that performs various controls in the normal operation mode. For example, the normal operation mode control unit 30 performs hall call registration based on an operation of the hall call button 28. Further, the normal operation mode control unit 30 further captures detection information of the multi-beam door sensor 31 and the scale device 32. And when a user's detection signal is acquired from the multi-beam door sensor 31, a control command is output to the car door opening / closing device to reverse the closed door, thereby preventing the door from contacting the user. Further, the normal operation mode control unit 30 has a function of switching the operation mode based on the operation of the inspection switch 25.

  The control device 14 further includes a safety device unit 50. The safety device unit 50 uses the multi-beam door sensor 31 at the time of maintenance and inspection of the elevator 10 as a means for detecting that the user has entered the car 12 and urging the user to leave. , Means for capturing 51 and means 52 for notifying.

  The control device 14 includes a CPU, an input unit used to input control parameters used when executing the functions of the above-described units, a recording unit that stores the input control parameters, a control program, and the like. A device including an input / output port and the like, and can be configured by a computer. Each function can be realized by executing software, specifically, by executing a corresponding elevator control program.

  The normal operation mode control unit 30 acquires an operation signal of the inspection switch 25 and switches the operation mode of the elevator 10 between the normal operation mode and the inspection operation mode based on the operation signal. For example, when the inspection switch 25 is turned ON, the normal operation mode control unit 30 switches the operation mode from the normal operation mode to the inspection operation mode. On the other hand, when the inspection switch 25 is turned off, the operation mode is switched from the inspection operation mode to the normal operation mode.

  The capturing means 51 has a function of starting the multi-beam door sensor 31 in the inspection operation mode and capturing the detected information. Note that “activation” includes continuing the activation state. That is, the capturing means 51 changes the output destination of the detection information of the multi-beam door sensor 31 from the normal operation mode control unit 30 that is the output destination in the normal operation mode to the safety device unit 50 in the inspection operation mode.

  For example, when the operation mode is switched from the normal operation mode to the inspection operation mode, the capturing unit 51 starts capturing the detection information of the multi-beam door sensor 31. On the other hand, when the operation mode is switched from the inspection operation mode to the normal operation mode, the capturing of the detection information of the multi-beam door sensor 31 is stopped, and the output destination of the detection information is changed to the normal operation mode control unit 30. In addition, the capturing unit 51 can directly acquire the operation signal of the inspection switch 25 and start or stop capturing the detection information of the multi-beam door sensor 31. That is, the capturing unit 51 starts or stops capturing detection information in conjunction with the operation of the inspection switch 25.

  The informing means 52 has a function of outputting a predetermined warning in the car 12 when a user who passes through the entrance / exit is confirmed based on the detected information of the multi-beam door sensor 31. As described above, the multi-beam door sensor 31 is a sensor that outputs a detection signal when the infrared beam projected from the projector does not reach the corresponding light receiver. By acquiring the detection signal, the user who passes through the entrance / exit can be confirmed.

  For example, the notification unit 52 can output a voice announcement using a speaker of the interphone 24 as a warning to be output. When a speaker is installed in addition to the interphone 24, a voice announcement or a buzzer sound may be output from the speaker. As an audio announcement, an announcement that can prompt the user to leave the car 12 by informing the user that maintenance is being inspected, such as "This elevator is not in operation for maintenance." It is. Note that the announcement is not limited to audio, and for example, a display informing the car indicator 23 that maintenance is being performed may be output.

  Next, the control procedure of the safety device unit 50 is illustrated with reference to the flowchart of FIG. In addition, the function and effect of the safety device unit 50 will be described.

  FIG. 3 is a flowchart illustrating a procedure from the normal operation mode to the inspection operation mode until the normal operation mode is restored again. As shown in FIG. 3, when the ON operation signal of the inspection switch 25 is acquired (S10), the operation mode of the elevator 10 is switched from the normal operation mode to the inspection operation mode (S11). The procedures of S10 and S11 are executed by the function of the normal operation mode control unit 30.

  Moreover, when the ON operation signal of the inspection switch 25 is acquired (S10), the acquisition of the detection signal of the multi-beam door sensor 31 is started. This procedure is executed by the function of the capturing means 51. For example, the capturing unit 51 can start capturing the detection signal by changing the output destination of the detection signal of the multi-beam door sensor 31 from the normal operation mode control unit 30 to the safety device unit 50. Therefore, the safety device unit 50 can use the multi-beam door sensor 31 to confirm the user who passes the entrance / exit in the inspection operation mode.

  In the inspection operation mode, when a detection signal of the multi-beam door sensor 31 is acquired (S13), that is, when a user passing through the entrance / exit is detected by the multi-beam door sensor 31, the signal from the predetermined car 12 is An announcement prompting the user to exit is output to the car 12 (S14). The procedures of S13 and S14 are executed by the function of the notification unit 52. As the announcement, for example, an audio announcement output using a speaker of the intercom 24 is preferable.

  Note that the procedures of S13 and S14 are repeatedly executed in the inspection operation mode. When the OFF operation signal of the inspection switch 25 is acquired (S15), the operation mode is switched from the inspection operation mode to the normal operation mode, and the normal operation mode is restored (S16). The procedures of S15 and S16 are executed by the function of the normal operation mode control unit 30.

  Finally, the capturing of the detection signal of the multi-beam door sensor 31 is stopped. This procedure is executed by the function of the capturing means 51. For example, the capturing unit 51 can stop capturing the detection signal by returning the output destination of the detection signal of the multi-beam door sensor 31 from the safety device unit 50 to the normal operation mode control unit 30.

  As described above, according to the safety device unit 50, when the multi-beam door sensor 31 is activated in the inspection operation mode, the detection signal is captured, and the detection signal of the multi-beam door sensor 31 is acquired, the announcement is made in the car 12. Can be output to prompt the user to leave. In other words, the safety device unit 50 uses the multi-beam door sensor 31 that is an existing facility installed in the elevator 10 to detect that the user has entered the car 12 at the time of maintenance and inspection. On the other hand, it is possible to prompt the exit. Therefore, it is possible to reduce the equipment cost and to prevent an increase in maintenance and inspection work load due to the addition of the dedicated equipment.

  In addition, the said embodiment can be design-changed in the range which does not impair the objective of this invention.

  For example, in the above-described embodiment, the detection signal of the multi-beam door sensor 31 is captured, and the announcement that prompts the user to exit based on the detection signal of the multi-beam door sensor 31 is output. It is good also as a safety device comprised so that the detection information of the security camera 33 may be taken in.

  For example, instead of activating the multi-beam door sensor 31, the capturing unit 51 can continue the activation state of the scale device 32 in the inspection operation mode and capture the detection information. And the alerting | reporting means 52 can output the announcement which urges a user to leave, when the increase in a loaded load is confirmed based on the detection information of the taken in scale apparatus 32 in check operation mode. It should be noted that an announcement is not output when only the inspector who has turned on the inspection switch 25 exists in the car 12 by confirming the increase in the loaded load based on the detection information of the scale device 32.

  For example, instead of activating the multi-beam door sensor 31 or the scale device 32, the capturing unit 51 can activate the security camera 33 in the inspection operation mode and capture the detected information. And the alerting | reporting means 52 can output the announcement which urges a user to leave, when a user is confirmed based on the detection information of the taken-in security camera 33 in inspection operation mode. However, the video taken by the security camera 33 and the detection information of the human sensor of the security camera 33 are not transmitted to the control device 14 even in the normal operation mode. Therefore, in order to use the detection information of the security camera 33 by the safety device, it is necessary to connect the security camera 33 and the control device 14 in advance. Moreover, the notification means 52 needs to acquire the video of the security camera 33 and determine whether the user is reflected in the video. Or the alerting | reporting means 52 is good also as what acquires the detection signal of the human sensitive sensor installed in the security camera 33, and confirms a user's presence.

  Further, in order to maintain the function of the safety device even when it is necessary to shut off the main power supply of the elevator 10, such as when performing maintenance and inspection of the hoisting machine 16, the safety device can be provided with a dedicated power source. When the main power is shut off, power is supplied from the dedicated power source to the safety device and the components of the elevator 10 related to its operation, for example, the control device 14, the multi-beam door sensor 31, the scale device 32, the security camera 33, and the interphone 24. Can be supplied.

  In consideration of maintenance and inspection of the multi-beam door sensor 31, it is preferable to provide a switch for stopping the function of the safety device.

  10 elevator, 11 hoistway, 12 passenger car, 13 landing, 14 control device, 15 machine room, 16 hoisting machine, 17 counterweight, 18 main rope, 19 car door, 20 car operation panel, 21 destination floor button, 22 Door opening / closing button, 23 car indicator, 24 intercom, 25 inspection switch, 26 landing door, 27 landing operation panel, 28 landing call button, 29 landing indicator, 30 normal operation mode control unit, 31 multi-beam door sensor, 32 weighing device, 33 security camera, 50 safety device unit, 51 capture means, 52 notification means.

Claims (5)

A safety device installed in an elevator that is equipped with a multi-beam door sensor that detects users passing through the entrance / exit in the normal operation mode, and that can be switched from the normal operation mode to the inspection operation mode during maintenance inspection,
Means for starting the multi-beam door sensor in the inspection operation mode and capturing the detection information;
Means for outputting a predetermined warning in the car when a user passing through the entrance / exit is confirmed based on the detected detection information;
Elevator safety device. A safety device installed in an elevator that is equipped with a scale device that detects the load on the car in the normal operation mode, and that can be switched from the normal operation mode to the inspection operation mode during maintenance inspection,
Means for starting the scale device in the inspection operation mode and capturing the detection information;
Means for outputting a predetermined warning in the car when an increase in the carrying load of the car is confirmed based on the detected detection information;
Elevator safety device. A safety device installed in an elevator that is equipped with a security camera that captures images in the car in the normal operation mode and that can be switched from the normal operation mode to the inspection operation mode during maintenance inspection,
A means to start the security camera in the inspection operation mode and capture the detection information,
Means for outputting a predetermined warning in the car when a user in the car is confirmed based on the detected detection information;
Elevator safety device. In the elevator safety device according to any one of claims 1 to 3,
The elevator is equipped with an inspection switch for switching the operation mode between the normal operation mode and the inspection operation mode,
An elevator safety device, wherein the detection information capturing means starts or stops capturing detection information in conjunction with an operation of an inspection switch. In the elevator safety device according to any one of claims 1 to 4,
An elevator safety device comprising a power supply for supplying power to a safety device and an elevator component related to the operation of the safety device when the elevator main power is shut off.

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