JP2013060244A - Apparatus for determining human absence in elevator car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for determining human absence in an elevator car that can determine the absence of a human in the car with high accuracy without requiring special equipment.SOLUTION: A control device 1 that controls the operation of a car body 6 having the elevator car 4 includes a memory means 1b memorizing a load detection value detected with a load detecting device 10 when the manual operation button arranged in the elevator car 4 is not operated continuously for a predetermined period and an operation means 1a calculating the difference between the load detection value detected with the load detecting device 10 when the manual operation button is not operated continuously for a predetermined period during the time of the empty determining in the elevator car carried out before the special operation performed at the a date set up beforehand and the load detection value memorized in the memory means 1b, wherein a constitution is set up to perform the processing to determine weather the difference calculated in the operation means 1a is less than a predetermined value which can be regarded as that the passenger 41 is not existing in the elevator car 4.

Description

  The present invention relates to an elevator unattended determination device for an elevator that is provided in an elevator having a load detection device disposed between a lower surface of a passenger car and a car frame, and determines whether the passenger is in the passenger car.

  There exists a thing shown by patent document 1 as this kind of prior art. In this prior art, an operation panel having operation buttons that can be operated by passengers is arranged in a car, and a load detector that detects a load amount of the car on the lower surface of the car, that is, a load detection device. I have. Although not shown in Patent Document 1, this type of load detection device usually has an elastic body disposed between the lower surface of the car and the car frame, and the load detection device is in accordance with the bending of the elastic body. However, the load capacity of passengers in the car is detected.

  In the prior art disclosed in Patent Document 1, when the loaded load detected by the load detection device is equal to or greater than the first threshold, the loaded load is the second in addition to the passenger determination unit that determines that there is a passenger. A second determination unit that determines that there is a passenger for a certain period of time when it fluctuates by more than a threshold value, and determines that there is a passenger while it fluctuates until the loaded load amount increases by a third threshold value or more and then decreases by a certain value or more A third determination unit and a fourth determination unit that determines that there is a passenger while the load amount fluctuates until a certain value or more is reduced after a car button operation is performed. That is, according to this prior art, the presence / absence of passengers in the car is determined according to the load capacity and the fluctuation of the load capacity. Automatic diagnosis operation is performed when it is determined that the car is unmanned. Thus, in the prior art, safety with respect to automatic diagnosis operation is considered.

JP 2008-114930 A

  However, in the prior art disclosed in Patent Document 1 described above, there is a risk of causing an error in detecting the load amount due to the initial strain of the elastic body used for load detection, thermal expansion associated with a temperature change according to the season, and the like. Depending on the detection error, there is a concern that an erroneous determination may occur if the passenger is unmanned despite the presence of passengers in the passenger car.

  In addition, when performing special operations related to the operation of the car such as automatic diagnosis operation and automatic recovery operation, it is necessary to confirm that there are no passengers in the car for safety. . Therefore, conventionally, it has been desired to improve the determination accuracy of the presence or absence of passengers in the car. It has also been desired to reduce the equipment cost required for such determination when determining whether or not there are passengers in the car.

  The present invention has been made from the actual situation in the prior art described above, and the purpose thereof is unmanned in an elevator car that can determine with high accuracy that a passenger car is unmanned without requiring a special device. It is to provide a determination device.

  In order to achieve the above object, the elevator unattended determination device for an elevator according to the present invention includes a car in which an operation panel having an operation button that can be operated by a passenger is disposed, and a car body including a car frame, An elastic body disposed between the lower surface of the car body of the car body and the car frame, a load detecting device for detecting a load of a passenger of the car according to the bending of the elastic body, the car and the car In an elevator unmanned judging device for an elevator that is provided in an elevator including a control device that controls the operation of the car body including a car frame, and that determines whether or not the inside of the car is unmanned, the control device includes the operation A storage means for storing a load detection value detected by the load detection device when the button has not been operated continuously for a predetermined time, and a pre-set after storing the load detection value in the storage means. The load detected by the load detection device when the operation button is not operated continuously for a predetermined time at the time of unmanned determination in the car that is performed before the special operation related to the operation of the car body performed at the date and time A difference between the detection value and the load detection value stored in the storage means, and the difference calculated by the calculation means assumes that no passenger is present in the car. It is characterized by performing a process of determining whether or not the value is within a predetermined value that is a value to be obtained.

  The present invention configured as described above is determined to be unmanned when the difference calculated by the calculation means is within a predetermined value by the control device, and is determined to be manned when the difference exceeds the predetermined value. The Here, the present invention provides load detection by calculating the difference between the load detection value detected by the load detection device and the load detection value stored in the storage means at the time of unattended determination in the car. Most of the detection errors due to the initial strain of the elastic body used and the thermal expansion accompanying the temperature change according to the season can be eliminated. In addition, when a person with poor physical condition or a drunk person falls in the car, the difference value exceeds the predetermined value in the calculation by the calculation means described above. Therefore, it is possible to reduce the number of passengers in the car that are erroneously determined to be unattended. As a result, unattended determination in the car can be realized with high accuracy. In addition, since the storage means and calculation means provided in the present invention can utilize the storage means and calculation means that are components of the control device that is normally provided, a special device is provided for unattended determination in the car. Is not required. That is, the present invention can determine with high accuracy that the passenger car is unmanned without requiring a special device.

  Further, in the present invention according to the invention, the load detection values stored in the storage means are a plurality of load detection values detected at the time of different detection, and stored in the storage means used in the calculation of the calculation means. The load detection value is a minimum value among the plurality of load detection values.

  In the present invention configured as described above, a plurality of load detection values stored in the storage means are mixed with load detection values stored when a person with poor physical condition or a drunk person falls in the car. Even when the difference is calculated by the calculation means, by selecting the minimum value among the plurality of load detection values stored in the storage means, erroneous data can be excluded, and the accurate car The unattended determination can be performed.

  Further, in the present invention according to the invention, the load detection value stored in the storage means used for the calculation by the calculation means is subjected to the uninhabited determination in the car at least one day before the day in which the in-car unattended determination is performed. The load detection value is detected in substantially the same time zone as the time zone.

  The present invention configured as described above is the difference between the calculation means in the load detection value stored in the storage means in a time zone that is substantially the same as the time zone in which the unattended determination is performed on the day near the date on which the unattended determination is performed in the car. It can be used in the calculation of As a result, even if the load detection value has changed from the time of new installation due to the initial strain of the elastic body or the thermal expansion accompanying the temperature change according to the season, the influence of the change can be reduced and the determination accuracy can be improved. .

  According to the present invention, the difference obtained by the calculation in the calculation means between the load detection value detected by the load detection device at the time of unattended determination in the car and the load detection value stored in the storage means of the control device is a predetermined value. When it is within the value, the controller determines that the car is unmanned. In addition, when calculating the difference with the calculation means of the control device, most of the detection error due to the initial strain and thermal expansion of the elastic body used for load detection can be eliminated, and the condition of poor physical condition in the car can be eliminated. When a person or a drunk person falls, the control device can determine that there are passengers in the car by the difference exceeding a predetermined value. As described above, the present invention can determine with high accuracy that the car is unmanned without requiring a special device, and can perform special operations such as automatic diagnosis operation and automatic recovery operation more safely than before. Can be done.

It is a figure which shows the basic composition of the elevator containing the control apparatus with which 1st Embodiment of the unmanned in-car determination apparatus which concerns on this invention is provided. It is a flowchart which shows the processing operation in the control apparatus with which 1st Embodiment of this invention is provided. It is a flowchart which shows the processing operation in the control apparatus with which 2nd Embodiment of this invention is provided.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an elevator car unattended determination device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a basic configuration of an elevator including a control device in which the first embodiment of the in-cab unmanned determination device according to the present invention is provided.

  The elevator shown in FIG. 1 includes a car body 6 including a car 4 on which a passenger 41 is placed and a car frame 5 formed so as to surround the car 4. An operation panel 8 is disposed in the car 4, and an operation button (not shown) that can be operated by a passenger 41 in the car 4 is provided on the operation panel 8. The elevator shown in FIG. 1 has a counterweight 7 that secures a weight balance with the car body 6, a rope 3 that connects the car body 6 and the counterweight 7, and the rope 3 is wound around the rope 3. And a hoisting machine 2 for raising and lowering the cage main body 6. Further, the elevator shown in FIG. 1 detects an elastic body 9 disposed between the lower surface of the car 4 and the car frame 5 and detects the load of the passenger 41 of the car 4 according to the bending of the elastic body 9. A load detection device 10 and a transmission cable 11 having one end connected to the load detection device 10 and the other end connected to the control device 1 that controls the operation of the car body 6 are provided. The operation panel 8 described above is also connected to the control device 1 via the transmission cable 11. The control device 1 also includes a timer that measures the time during which an operation button (not shown) on the operation panel 8 is not continuously operated. Note that the elevator shown in FIG. 1 may be an elevator having a machine room, or may be a so-called machine room-less elevator.

  Further, the control device 1 includes a configuration that is characteristic of the first embodiment related to the in-car unattended determination device. That is, when the timer measures that an operation button (not shown) provided on the operation panel 8 arranged in the car 4 has not been operated continuously for a predetermined time, for example, for several minutes, Storage means 1b for storing the load detection value detected by the load detection device 10, and automatic diagnosis operation relating to the operation of the car body 6 performed at a preset date and time after storing the load detection value in the storage means 1b The load detection value detected by the load detection device 10 when the above-mentioned operation button (not shown) is not operated continuously for several minutes at the time of unattended determination in the car performed before special operation such as automatic recovery operation. And calculating means 1a for calculating the difference between the load detection values stored in the storage means 1b described above, and the difference calculated by the calculating means 1a is assumed that there is no passenger 41 in the car 4. It consists performs processing to determine whether within a predetermined value is that value. The predetermined value used when determining the difference is set to, for example, several percent of the rated load on the car 4.

  The automatic diagnosis operation described above is an operation for periodically diagnosing whether or not various sensors and devices are operating normally. Automatic recovery operation is performed when the elevator stops when an earthquake occurs. This is an operation for automatic recovery. Any driving needs to be executed after confirming that there is no passenger 41 in the car 4 for safety.

  FIG. 2 is a flowchart showing the processing operation in the control device provided with the first embodiment of the present invention. The operation of the first embodiment will be described below based on the flowchart shown in FIG.

  First, as a first stage, an operation button (not shown) is not continuously operated for a predetermined time in the storage unit 1a of the control device 1 on the set date (1) before the set date (2) for performing the unattended determination in the car. In such a case, the load detection value detected by the load detection device 10 is stored in advance. That is, the control device 1 determines whether or not the set date and time (1) has been reached (step S1). If it has not reached the set date (1), it waits until it reaches the set date (1) (No in step S1).

  When the set date and time (1) is reached (Yes in step S1), whether or not an operation button (not shown) on the operation panel 8 arranged in the car 4 is continuously operated for a predetermined time, for example, for several minutes. Judgment is made (step S2). When the operation button (not shown) on the operation panel 8 is not continuously operated for several minutes, the inside of the car 4 can be regarded as unmanned from experience. If an operation button (not shown) on the operation panel 8 has been operated for several minutes, it waits until it has not been operated continuously for several minutes (No in step S2). If the operation button on the operation panel 8 is not operated continuously for several minutes (Yes in step S2), it is then determined whether the load detection value is not more than a predetermined value, for example, 10 to 20% or less of the rated load of the car 4. (Step S3). The determination in step S3 is performed when an operation button (not shown) on the operation panel 8 is not operated even though there are passengers in the car 4 due to mischief or failure of the operation panel 8. This is a determination that is made in order not to erroneously determine that the inside of the car 4 is unmanned in the case of a failure or the like in which the signal of the operation panel 8 is not transmitted to the control device 1. The reason why the predetermined value in step S3 is set to 10 to 20% of the rated load of the car 4 is, for example, when the elastic body 8 is made of anti-vibration rubber, depending on the environmental temperature according to the season, deterioration over time, etc. This is based on generating detection error of about 10% per year.

  If the detected load value exceeds the predetermined value, the process returns to step S2 (No in step S3). If an operation button (not shown) on the operation panel 8 is not continuously operated for several minutes and the load detection value is equal to or less than a predetermined value, the inside of the car 4 is determined to be unmanned, and is detected by the load detection device 10 in the storage means 1b. The detected load value is stored (step S4). In this way, the load detection value when the inside of the car 4 is regarded as an unmanned state is stored in the storage means 1b in advance.

  After the next step S8, as the second stage, the operation is performed on the day on which the unattended determination in the car is performed, that is, the set date (2). When it is determined that the set date (2) for performing the unattended determination in the car (Yes in step S8), the operation buttons (not shown) on the operation panel 8 arranged in the car 4 are continuously continued for a predetermined time, for example, for several minutes. It is determined whether or not it has been operated manually (step S9). When an operation button (not shown) on the operation panel 8 has not been operated continuously for several minutes (Yes in step S9), as described above, the inside of the car 4 can be regarded as unmanned as empirically. Next, it is determined whether or not the load detection value is a predetermined value or less, for example, 10 to 20% or less of the rated load (step S10). As described above, the operation button (not shown) on the operation panel 8 is not operated even though there are passengers in the car 4 due to mischief or failure of the operation panel 8, and This determination is made in order not to erroneously determine that the inside of the car 4 is unmanned in the case of a failure or the like in which the signal of the panel 8 is not transmitted to the control device 1.

  If the load detection value exceeds the predetermined value (10 to 20% of the rated load), the process returns to step 9 (No in step S10). If the load detection value is equal to or less than a predetermined value (rated load capacity 10 to 20%) (Yes in step S10), the load detection value detected by the current load detection device 10 and the storage means 1b as described above are stored. A calculation for obtaining the difference between the detected load values is performed by the calculation means 1a (step S11). Here, the control device 1 determines whether or not the difference obtained by the calculation means 1a is within a predetermined value, for example, within a few percent of the rated load (step S12). When the difference is within a predetermined value (several percent of the rated load), the control device 1 determines that the car 4 is unmanned (step S13). In this case, special operations such as automatic diagnosis operation and automatic recovery operation are possible. Further, when the difference exceeds a predetermined value (a few percent of the rated load capacity), the control device 1 determines that the passenger 41 is present in the car 4 (step S14). In this case, special operations such as automatic diagnosis operation and automatic recovery operation cannot be performed, and a standby state is entered. Both determination results are stored in the storage means 1a (step S15).

  According to the first embodiment configured as described above, the load detection value detected by the load detection device 10 at the time of unattended determination in the car 4, and the load detection value stored in the storage means 1b of the control device 1 Is calculated by the calculation means 1a of the control device 1 to eliminate most of the detection error due to the initial strain of the elastic body 9 used for load detection, thermal expansion accompanying temperature change according to the season, and the like. Can do. In addition, when a person with poor physical condition or a drunk person falls in the car 4, the difference value exceeds a predetermined value (several% of the rated load) in the calculation for calculating the difference by the calculation means 1a described above. Therefore, it can be determined that the passenger 41 is present in the car 4, and it is rarely erroneously determined that the car 4 is unmanned. Thus, unattended determination in the car 4 can be realized with high accuracy. Moreover, since the memory | storage means 1b and the calculating means 1a provided in this 1st Embodiment can utilize the memory | storage means and calculating means which are the components of the control apparatus 1 provided normally, the unmanned determination in the passenger car 4 is carried out. It is not necessary to provide special equipment. That is, the first embodiment can determine with high accuracy that the inside of the car 4 is unmanned without requiring a special device. This makes it possible to safely perform special operations such as automatic diagnosis operation and automatic recovery operation.

  FIG. 3 is a flowchart showing the processing operation in the control device provided with the second embodiment of the present invention.

  In the second embodiment, the load detection values stored in the storage means 1b are a plurality of load detection values respectively detected through different car load detection operations performed at different dates and times. As the load detection value stored in the storage unit 1b to be used, the minimum value among the plurality of load detection values described above is selected. Other configurations are the same as those of the first embodiment described above.

  Of the processing operations in the second embodiment, steps S1 to S3 shown in FIG. 3 are the same as S1 to S3 in the first embodiment. In the second embodiment, in step S4 shown in FIG. 3, load detection values at different detection times are detected and stored through different car load detection operations performed at different dates and times. For example, the load detection value is detected three times or more and is stored in the storage means 1b. It is determined whether or not the number of times the load detection value is stored in the storage unit 1b has reached the set number (step S5). When the number reaches the set number, the load detection value storing operation is terminated (step S6). When the set number of times is not reached, after a set time, for example, several tens of minutes to one hour (step S7), the processes of steps S2 to S5 are repeated. This step S7 is to store the load detection values a plurality of times after a predetermined time. If a person is lurking in the car 4 due to mischief, or if a drunk person falls asleep in the car 4 Even if a situation where the load detection value is mistakenly stored in a situation where the error occurs is detected by detecting the load detection value at each of the different detection times over time, all the erroneous data is detected. It can be prevented from being detected over time. At this stage, a plurality of load detection values are stored in the storage unit 1b.

  From the next step S8, the operation on the day when the unattended determination in the car in the second stage is performed. Note that the processing performed from step S8 to step S10 is equivalent to that in the first embodiment. In the second embodiment, the calculation means 1a selects the minimum value among the plurality of detection values stored in the storage means 1b, the load detection value detected by the current load detection device 10, and the load detection described above. The difference from the minimum value is calculated (step S11 ′). The processing from step S12 to step S15 is equivalent to that in the first embodiment.

  In the second embodiment configured as described above, the same operation effect as the first embodiment can be obtained, and in addition, a plurality of load detection values stored in the storage unit 1a can be used by a person with poor physical condition or a drunk person as a car. 4, even if misdetection data stored when it falls down is mixed, the minimum value among the plurality of load detection values stored in the storage unit 1 b when calculating the difference in the calculation unit 1 a is calculated. By selecting, erroneous detection data can be excluded and accurate unmanned determination in the car 4 can be performed.

  In the first embodiment described above, in-car unattended determination is performed for the load detection value to be stored in the storage unit 1a of the control device 1 within at least one day to one month before the day of in-car unattended determination. It is convenient to use a load detection value detected in a time zone substantially the same as the time zone. When calculating the difference in the calculation means 1a, if the load detection value detected before one month of the day when the unattended determination is performed is used, the thermal expansion of the elastic body 9 due to the environmental temperature difference due to seasonal change or the like The error due to may increase. The “substantially the same time period” described above is not necessarily the same time as long as it is considered that the use condition of the elevator, the temperature, and the like are substantially the same conditions. Including time range.

  In such a configuration, the same effect as that of the first embodiment can be obtained, and the load detection value has been aged from the time of new installation due to the initial strain of the elastic body 9 or the thermal expansion accompanying the temperature change according to the season. Even if it changes, the determination accuracy can be improved by reducing the influence of the change.

DESCRIPTION OF SYMBOLS 1 Control apparatus 1a Arithmetic means 1b Storage means 4 Car 5 Car frame 6 Car body 8 Operation panel 9 Elastic body 10 Load detection device 11 Transmission cable 41 Passenger

Claims (3)

A car having an operation panel having operation buttons that can be operated by a passenger, a car body including a car frame, and an elastic body arranged between the lower surface of the car body and the car frame of the car body A load detecting device for detecting a load of a passenger of the car according to the bending of the elastic body; and a control device for controlling the operation of the car body including the car and the car frame. In the elevator unattended determination device for determining whether the inside of the car is unmanned,
The controller is
Storage means for storing a load detection value detected by the load detection device when the operation button has not been operated continuously for a predetermined time;
After storing the load detection value in the storage means, the operation button is continuously operated for a predetermined time at the time of unattended determination in the car that is performed before the special operation related to the operation of the car body that is performed at a preset date and time. A load detection value that is detected by the load detection device when not performed, and a calculation means for calculating a difference between the load detection values stored in the storage means,
An unoccupied uninhabitant determination device for an elevator car that performs a process for determining whether the difference calculated by the calculating means is within a predetermined value that is a value that can be regarded as no passengers in the car. . In the elevator unattended determination device according to claim 1,
The load detection values stored in the storage means are a plurality of load detection values detected at different detection times,
The elevator unattended determination apparatus for an elevator car, wherein the load detection value stored in the storage means used in the calculation by the calculation means is a minimum value among the plurality of load detection values. In the elevator unattended determination device according to claim 1,
The load detection value stored in the storage means used in the calculation by the calculation means is detected at a time zone approximately the same as the time zone in which the in-car unattended determination is performed at least one day before the day in which the in-car unattended determination is performed. An uninhabited determination device for an elevator car, which is a detected load value.

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