JP2013056739A - String-like object detecting device for elevator, elevator device and image identifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a string-like object detecting device capable of detecting an object that exists in a doorway as a string-like object when the string-like object exists in the doorway of an elevator.SOLUTION: The string-like object detecting device includes a door sensor 1 of multibeam type, a sensor detection history analysis means 9, and a string-like object detecting means 10. The door sensor 1, in which a plurality of detection light beams are disposed in the doorway of the elevator, outputs an ON signal when the detection light beam is intercepted, and an OFF signal when the detection light beam is not intercepted. The sensor detection history analysis means 9 detects a duration time of the ON signal output from the door sensor 1. The string-like object detecting means 10 determines whether or not the string-like object exists in the doorway according to the duration time of the ON signal detected by the sensor detection history analysis means 9.

Description

  The present invention relates to a string-like object detection device for detecting a string-like object present at an entrance / exit of an elevator, and an elevator apparatus and an image confirmation device using the string-like object detection device.

  Patent Document 1 below describes an apparatus for detecting a string-like object as an obstacle when a string-like object is present at an entrance of an elevator. In the apparatus described in Patent Document 1, a plurality of light emitting elements are installed side by side on one side of an elevator entrance. A plurality of light receiving elements are arranged vertically on the other side of the entrance of the elevator so as to correspond to the light emitting elements. The light receiving element is divided into a plurality of sections, and the amount of light received by the light receiving element is detected for each of the divided sections.

JP 2009-51615 A

  In the thing of patent document 1, although the string-like object which exists in the entrance / exit of an elevator can be detected as an obstacle, the obstacle is a string-like object, or an object other than a string-like object, I couldn't identify who it was.

  The present invention has been made to solve the above-described problems. The object of the present invention is to detect an object existing at an entrance of a lift as a string-like object when there is a string-like object at the entrance of the elevator. It is providing the string-like object detection apparatus which can perform, and the elevator apparatus and image | video confirmation apparatus using the function of such a string-like object detection apparatus.

  The string-like object detection device for an elevator according to the present invention arranges a plurality of detection lights at the entrance and exit of the elevator, and outputs an on signal when the detection light is blocked and an off signal when the detection light is not blocked. A multi-beam type door sensor, a sensor detection history analysis means for detecting the duration of the ON signal output from the door sensor, and the ON / OFF duration detected by the sensor detection history analysis means. String-like object detecting means for determining the presence or absence of a string-like object.

  Moreover, the string-like object detection device for an elevator according to the present invention has a plurality of detection lights arranged at the entrance and exit of the elevator, and an on signal when the detection light is blocked and an off signal when the detection light is not blocked. A multi-beam type door sensor that outputs a signal, a sensor detection history analysis unit that detects a duration of an ON signal and a duration of an OFF signal output from the door sensor, and a duration of an ON signal detected by the sensor detection history analysis unit And string-like object detecting means for judging the presence or absence of the string-like object present at the entrance / exit based on both the duration of the OFF signal and the off signal.

  An elevator apparatus according to the present invention is an elevator apparatus provided with the above string-like object detection device, a monitoring camera that captures an image of a car, video data storage means that stores video data captured by the monitoring camera, A video based on the detection result of the string-like object detecting means for extracting video data taken by the surveillance camera when a string-like object is present at the doorway from the data stored in the video data storage means A data search means; and a video data output means for outputting the video data extracted by the video data search means and displaying the video on a predetermined monitor.

  An elevator apparatus according to the present invention is an elevator apparatus provided with the above string-like object detection device, and when the string-like object detecting means detects that a string-like object is present at the doorway, Video data output means for displaying information on a predetermined monitor.

  An elevator apparatus according to the present invention is an elevator apparatus including the string-like object detection device, and the string-like object is detected when the string-like object detecting unit detects that a string-like object is present at the entrance / exit. An operation control device that performs a predetermined operation for moving the doorway from the doorway.

  The video confirmation apparatus according to the present invention is photographed by data accumulation means for accumulating state information of signals output from a multi-beam type door sensor of an elevator in association with time information, and a monitoring camera for photographing an interior of the elevator car. A video data storage means for storing video data in association with time information, and a video confirmation apparatus connectable to a video recording apparatus comprising: a door sensor based on the data stored in the data storage means Sensor detection history analysis means for detecting the duration of the ON signal output from the string, and a string for determining the presence or absence of a string-like object present at the entrance based on the duration of the ON signal detected by the sensor detection history analysis means Based on the detection result of the string object detection means and the string object detection means, when the string object exists at the entrance / exit, The video data retrieved by the video data storage means and the video data extracted by the video data search means are output to a predetermined monitor. Video data output means for displaying video.

According to the string-like object detection device according to the present invention, when a string-like object is present at the entrance / exit of the elevator, the object present at the entrance / exit can be detected as a string-like object.
Moreover, the elevator apparatus and image | video confirmation apparatus using the function of such a string-like object detection apparatus can be provided.

It is a block diagram which shows the string-like object detection apparatus of the elevator in Embodiment 1 of this invention. It is a figure for demonstrating the function of the string-shaped object detection apparatus shown in FIG. It is a figure for demonstrating the function of the string-shaped object detection apparatus shown in FIG. It is a figure for demonstrating the function of the string-like object analysis means shown in FIG. It is a block diagram which shows the string-like object detection apparatus of the elevator in Embodiment 2 of this invention. It is a figure for demonstrating the function of the string-shaped object detection apparatus shown in FIG. It is a block diagram which shows the elevator apparatus in Embodiment 3 of this invention. It is a flowchart which shows operation | movement of the string-like object analysis means in Embodiment 3 of this invention. It is a block diagram which shows the elevator apparatus in Embodiment 4 of this invention. It is a block diagram which shows the elevator apparatus in Embodiment 5 of this invention. It is a flowchart which shows operation | movement of the string-like object analysis means in Embodiment 5 of this invention. It is a block diagram which shows the elevator apparatus in Embodiment 6 of this invention.

  The present invention will be described in detail with reference to the accompanying drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals. The overlapping description is simplified or omitted as appropriate.

Embodiment 1 FIG.
1 is a block diagram showing an elevator string-like object detection apparatus according to Embodiment 1 of the present invention. 2 and 3 are diagrams for explaining functions of the string-like object detection device shown in FIG.

  1 to 3, reference numeral 1 denotes a multi-beam type door sensor provided in an elevator. The door sensor 1 is for detecting an object existing at an elevator entrance (car entrance or entrance / exit). The door sensor 1 includes a plurality of light emitting units 2, a plurality of light receiving units 3 corresponding to the respective light emitting units 2, and a control unit 4.

  The light emission part 2 is installed in the up-down direction at equal intervals at the entrance-end side edge part of one elevator door 5a (car door or landing door), for example. The light receiving parts 3 are installed at equal intervals in the vertical direction at the entrance / exit side end of the other elevator door 5 b in accordance with the arrangement of the light emitting parts 2. The light emitting unit 2 emits light (detection light) for detecting the presence or absence of an object toward the light receiving unit 3 in the horizontal direction. The detection light emitted from the light emitting unit 2 passes through the elevator entrance and then enters the paired light receiving units 3. For this reason, detection light is arrange | positioned for every predetermined height at the entrance / exit of an elevator. The door sensor 1 can detect an object (obstacle) in the entire entrance / exit (or over a predetermined height range of the entrance / exit).

A signal indicating whether or not the detection light is received by each light receiving unit 3 is input to the control unit 4.
When there is no obstacle (such as a person or an object) at the entrance / exit of the elevator, the detection light from each light emitting unit 2 is incident on the corresponding light receiving unit 3 without being blocked by the obstacle. When the detection light is received by all the light receiving units 3, the control unit 4 outputs an off signal indicating that there is no obstacle at the entrance and exit. When there is an obstacle at the entrance / exit of the elevator, the detection light (a part thereof) is blocked by the obstacle, and at least one of the light receiving units 3 cannot receive the detection light. When no detection light is received by any of the light receiving units 3, the control unit 4 outputs an ON signal indicating that there is an obstacle at the entrance / exit.

  FIG. 2 shows a state when one passenger gets on and off the elevator car 6 (not shown in FIGS. 1 to 3). Before the passenger enters the elevator doorway, all the detection light is incident on the light receiving unit 3 without being blocked. For this reason, the control unit 4 outputs an off signal. When the passenger reaches the doorway, part of the detection light is blocked by the passenger. For this reason, the control unit 4 outputs an ON signal. The passenger's body (or the normal baggage carried by the passenger) is sufficiently larger than the interval of the detection light arranged at the entrance / exit. For this reason, while the passenger is passing through the doorway, at least one of the detection lights is blocked, and the control unit 4 continuously outputs an ON signal. When the passenger completely passes through the doorway, all the detection light is incident on the light receiving unit 3 again. For this reason, the control unit 4 continuously outputs the off signal until any detection light is blocked again.

  FIG. 3 shows a state in which a string-like object such as a lead connected to a domestic dog passes through an elevator doorway. For example, FIG. 3 shows that when a dog owner gets on the elevator car 6, the dog connected to the lead gets on the car 6 first and the owner with the lead is still on the elevator landing. .

  A string-like object such as a lead has a smaller diameter than the interval of detection light arranged at the entrance / exit. For this reason, when the string-like object is arranged between the upper and lower detection lights, even if the string-like object is arranged so as to pass through the entrance / exit of the elevator, all the detection lights are blocked. Without being incident on the light receiving unit 3. Further, the string-like object often moves irregularly within a certain range in accordance with the movement of the person holding the string-like object. For this reason, when only a string-like object exists at the entrance / exit of the elevator, a state where one detection light is blocked and a state where none of the detection lights are blocked are often repeated. In such a case, the control unit 4 repeatedly outputs an on signal and an off signal at short intervals.

The configuration of the door sensor 1 is not limited to the above. The above configuration shows an example of a multi-beam type door sensor.
As a multi-beam type door sensor, a plurality of detection lights can be arranged at the entrance and exit of an elevator, and when any detection light is blocked, an on signal is not blocked. It is only necessary to output an off signal sometimes. As long as such a function is provided, door sensors having other configurations may be employed. For example, you may arrange | position detection light so that the entrance and exit of an elevator may be crossed. You may arrange | position detection light so that an entrance / exit may be crossed and crossed. By using a reflector or the like, the detection light from the light emitting unit may be reflected in a predetermined direction and then incident on the light receiving unit.

The arrangement of the door sensor 1 is not limited to the above. The above arrangement shows an example in which the car 6 is provided with double doors 5a and 5b.
The light emitting unit and the light receiving unit may be arranged in any manner as long as the above function can be realized as a multi-beam type door sensor. For example, when the car 6 is provided with double doors 5a and 5b, the light emitting unit and the light receiving unit may be installed on a vertical column or the like that forms an entrance of an elevator. When the car 6 is provided with a single door type door, one of the light emitting part and the light receiving part is installed at the door end of the door, and the other of the light emitting part and the light receiving part is placed on the vertical column on the door side. May be installed.

  The ON signal and the OFF signal output from the door sensor 1 (the control unit 4 thereof) are recorded in the data storage unit 7. Tables 1 and 2 below show examples of signal history (detection history of the door sensor 1) stored in the data storage means 7.

  Table 1 shows a case where the state information of the signal output from the door sensor 1 is recorded in the data storage means 7 when the state of the signal output from the door sensor 1 changes. That is, when the output from the door sensor 1 is switched from the on signal to the off signal, and when the output is switched from the off signal to the on signal, the state information (ON / OFF) of the signal after the switching is the time at that time The data is stored in the data storage means 7 in association with the information.

  Table 2 shows a case where the status information of the signal output from the door sensor 1 is recorded in the data storage unit 7 every time a certain time elapses. In the example shown in Table 2, the state information (ON / OFF) of the signal output from the door sensor 1 is recorded in the data storage unit 7 in association with the time information at that time every 0.05 seconds.

  Reference numeral 8 denotes a string-like object analyzing means for analyzing whether or not a string-like object exists at the entrance of the elevator. Hereinafter, the function of the string-like object analyzing means 8 will be described with reference to FIG. FIG. 4 is a diagram for explaining the function of the string-like object analyzing means shown in FIG.

  The string-like object analyzing means 8 analyzes whether or not the string-like object exists at the entrance / exit of the elevator based on the time-series pattern of the ON signal and the OFF signal output from the door sensor 1 (the control unit 4). The string-like object analyzing means 8 includes, for example, a sensor detection history analyzing means 9 and a string-like object detecting means 10.

  The sensor detection history analysis means 9 has a function of detecting the duration of the ON signal output from the door sensor 1 (T1 shown in FIG. 4) and the duration of the OFF signal (T2 shown in FIG. 4). For example, the sensor detection history analysis unit 9 calculates the duration T1 of each on signal and the duration T2 of each off signal based on the signal history stored in the data storage unit 7.

  In the configuration shown in FIG. 1, since the detection history of the door sensor 1 is stored in the data storage unit 7, the sensor detection history analysis unit 9 also includes the durations T <b> 1 and T <b> 2 of the signals output from the door sensor 1 in the past. Can be detected.

  On the other hand, when the sensor detection history analysis unit 9 detects the durations T1 and T2 in real time, the string-like object detection device may not include the data storage unit 7. In such a case, the output signals (ON signal and OFF signal) from the door sensor 1 are directly input to the string-like object analyzing means 8 and stored in the memory for a necessary little time. The sensor detection history analysis means 9 calculates a duration T1 of each on signal and a duration T2 of each off signal based on the output signal from the door sensor 1 and the time information from the clock means (not shown). .

  The string-like object detecting means 10 has a function of determining the presence or absence of a string-like object present at the entrance / exit of the elevator. The string-like object detection means 10 specifies whether or not a string-like object exists at the entrance of the elevator based on the detection result of the sensor detection history analysis means 9.

  As described above, when a string-like object is present at the entrance / exit of the elevator, an ON signal and an OFF signal are often repeatedly output from the door sensor 1 (the control unit 4) at short intervals. For this reason, for example, the string-like object detecting means 10 determines the presence / absence of a string-like object present at the entrance / exit of the elevator based on the duration T1 of the ON signal. In such a case, the string-like object detecting means 10 detects the presence of the string-like object at the entrance of the elevator when the ON signal duration T1 satisfies the following condition (Equation 1).

TH_T1D ≦ T1 ≦ TH_T1U (1)
Here, TH_T1D is a predetermined value (first reference value), and TH_T1U is a predetermined value (second reference value) that is longer than TH_T1D. TH_T1D and TH_T1U are stored in advance in storage means (not shown) of the string-like object analysis means 8.

  When the above formula 1 is not satisfied, the string-like object detecting unit 10 detects that no string-like object exists at the entrance of the elevator. Even when the string-like object is not detected by the string-like object detecting means 10, if any detection light is blocked, an obstacle (such as a person or an object) existing at the entrance / exit of the elevator is detected.

  The string-like object detecting means 10 may determine the presence or absence of a string-like object present at the entrance of the elevator based on both the ON signal duration T1 and the OFF signal duration T2. In such a case, for example, the string-like object detection means 10 has an ON signal duration T1 that satisfies the above-described expression 1, and an OFF signal duration T2 that immediately follows the ON signal satisfies the following condition (expression 2). In this case, it is detected that a string-like object is present at the entrance of the elevator.

TH_T2D ≦ T2 ≦ TH_T2U (2)
Here, TH_T2D is a predetermined value (third reference value), and TH_T2U is a predetermined value (fourth reference value) that is longer than TH_T2D. TH_T2D and TH_T2U are stored in advance in the storage unit of the string-like object analysis unit 8.

  In the following, the state in which the above equation 1 is established for the duration T1 of the on signal and the above equation 2 is established for the duration T2 of the off signal immediately after that is also referred to as an on / off state.

  When the on / off state is not detected, the string-like object detecting means 10 detects that no string-like object exists at the entrance / exit of the elevator. Even when the string-like object is not detected by the string-like object detecting means 10, if any detection light is blocked, an obstacle (such as a person or an object) existing at the entrance / exit of the elevator is detected.

  The string-like object detecting means 10 may determine the presence / absence of a string-like object present at the entrance / exit of the elevator based on the number of repetitions NC of the on / off state. In such a case, the string-like object detection means 10 detects the presence of a string-like object at the entrance / exit of the elevator when the ON / OFF state repetition count NC satisfies the following condition (Equation 3).

NC ≧ TH_NC (3)
Here, TH_NC is a predetermined value (repetition reference value). The case of TH_NC = 1 corresponds to the above case where both Expression 1 and Expression 2 are satisfied.

  When the presence or absence of a string-like object is determined based on the number of repetitions NC in the on / off state, a time limit for counting the number of repetitions NC may be provided. In such a case, the string-like object detecting means 10 determines the presence / absence of a string-like object present at the entrance / exit of the elevator based on the ON / OFF state repetition count NC_T3 detected within a predetermined fixed time (T3 shown in FIG. 4). To do. For example, the string-like object detection means 10 connects the string at the entrance of the elevator when the number of repetitions NC_T3 detected during the predetermined time T3 is equal to or greater than a predetermined repetition reference value TH_NC_T3 (when Expression 3 is satisfied). Detect the presence of the object. T3 and TH_NC (TH_NC_T3) are stored in advance in the storage unit of the string-like object analysis unit 8.

  When the above expression 3 is not established, the string-like object detecting means 10 detects that no string-like object exists at the entrance / exit of the elevator. Even when the string-like object is not detected by the string-like object detecting means 10, if any detection light is blocked, an obstacle (such as a person or an object) existing at the entrance / exit of the elevator is detected.

  With the string-like object detection device having the above configuration, when a string-like object exists at the entrance of the elevator, the presence of the string-like object can be reliably identified. For this reason, if the string-like object detection device configured as described above is used, for example, when the obstacle present at the entrance of the elevator is an object other than the string-like object or a person, Different control and the like can be performed. In many cases, the string-like object detection device having the above-described configuration can detect a string-like object without installing a new hardware device in the elevator apparatus.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing an elevator string-like object detection apparatus according to Embodiment 2 of the present invention. FIG. 6 is a diagram for explaining the function of the string-like object detection device shown in FIG.

As shown in FIG. 5, the string-like object detection device in the present embodiment includes a scale device 11 in addition to the configuration shown in the first embodiment.
The scale device 11 has a function of detecting the load on the elevator car 6. The detected value of the loaded load by the scale device 11 is output to the data storage means 7. The data storage means 7 records the detected value of the loaded load by the scale device 11 in association with the state information of the signal output from the door sensor 1 and the time information at that time.

  When the string-like object detecting device has the configuration shown in FIG. 5, the string-like object detecting means 10 is based on the number of repetitions of the on / off state and the load of the car 6 detected by the scale device 11. It is determined whether or not there is a string-like object.

  For example, the string-like object detecting means 10 detects the presence of a string-like object at the entrance / exit of the elevator when the above expression 3 is satisfied for the repetition number NC of the on / off state. In addition, when a plurality of passengers jump on the car 6, the on signal and the off signal may be repeatedly output from the door sensor 1 in a short time. In such a case, if the number of repetitions NC is counted, the string-like object detection accuracy decreases. Therefore, when a predetermined load fluctuation is detected by the scale device 11, the string-like object detection unit 10 performs a process of resetting the on / off state repetition number NC to 0.

The processing content of the string-like object detection means 10 in this Embodiment is demonstrated with reference to FIG.
The string-like object detection means 10 counts the repeat count NC at 1 at the time ta and the repeat count NC at 2 at the time tb by repeatedly outputting the ON signal and the OFF signal from the door sensor 1. It is assumed that the durations T1 and T2 of the on signal and the off signal sandwiched between the on signals shown in FIG. 6 satisfy the above formulas 1 and 2.

  When a load fluctuation M equal to or greater than a predetermined fluctuation reference value TH_M is detected by the scale device 11 at time tc immediately after time tb, the string-like object detection means 10 causes the passenger or the like to get on the car 6 (or The number of repetitions NC is set to 0.

  With such a configuration, it is possible to reliably prevent the number of repetitions NC from being counted based on an output signal from the door sensor 1 when a passenger or the like gets on and off the car 6. For this reason, it becomes possible to improve the detection accuracy of a string-like object.

Also in this configuration, as in the case of the first embodiment, a time limit for counting the number of repetitions NC may be provided. However, with this configuration, it is possible to detect a string-like object with high accuracy without providing a time limit for counting the number of repetitions NC.
Further, when the data storage means 7 is not provided in the string-like object detection device, the detection value of the loaded load by the scale device 11 is used as the string output signal (ON signal and OFF signal) from the door sensor 1. What is necessary is just to input directly to the shape object analysis means 8.
The rest of the configuration is the same as that of the first embodiment.

Embodiment 3 FIG.
In the following embodiments (Embodiments 3 to 6), an elevator apparatus using the string-like object detection device will be described. In the third to sixth embodiments, any of the configurations described in the first and second embodiments may be adopted for the string-like object detection device.

FIG. 7 is a block diagram showing an elevator apparatus according to Embodiment 3 of the present invention.
In the following embodiments, as an example, a case will be described in which a multi-beam type door sensor 1 is installed in an elevator car 6 having double doors 5a and 5b (car doors).

In addition to the door sensor 1, the car 6 includes a scale device 11, a car operation panel 12, a video monitor 13, and a monitoring camera 14.
The control unit 4 of the door sensor 1 outputs an on signal and an off signal to the operation control device 15 based on the light emitting state from the light emitting unit 2 and the light receiving state by the light receiving unit 3. The scale device 11 outputs the detected load value of the car 6 to the operation control device 15.

  The operation control device 15 has a function of controlling the operation of the elevator. The operation control device 15 controls the raising / lowering operation of the car 6 and the opening / closing operation of the doors 5a and 5b. For example, when an ON signal is input from the door sensor 1 during the door closing operation, the operation control device 15 reverses the doors 5a and 5b and performs the door opening operation. In addition, when the car 6 is stopped at the landing, the operation control device 15 performs a predetermined operation for urging the user to get off the car if a load in the car that exceeds the rated load is detected by the scale device 11.

  The car operation panel 12 is for operation by elevator passengers, maintenance personnel, and the like. The car operation panel 12 is provided with a display, a destination button for each stop floor, a door open button, and a door close button. When the destination button, door open button, or door close button is pressed, the car operation panel 12 outputs a corresponding signal to the operation control device 15.

The video monitor 13 is for displaying video and providing information in the car 6. The display content of the video monitor 13 is controlled by, for example, a video recording device 16 described later.
The surveillance camera 14 is for photographing the inside of the car 6. Video data captured by the surveillance camera 14 is output to the video recording device 16.

  The operation control device 15, the video monitor 13, and the monitoring camera 14 are connected to the video recording device 16. The video recording device 16 is provided with operation data storage means 17, search command detection means 18, the above-described string-like object analysis means 8, video data storage means 19, video data search means 20, and video data output means 21. .

  When the operation control device 15 acquires various operation data related to the elevator, the operation control device 15 outputs the operation data to the video recording device 16. In the video recording device 16, the operation data input from the operation control device 15 is stored in the operation data storage means 17. For example, output signals (ON signal and OFF signal) from the door sensor 1 and load detection values by the scale device 11 are stored (stored) in the operation data storage means 17 in association with time information. That is, the function of the data storage means 7 in the first and second embodiments is realized by one function of the operation data storage means 17.

  The search command detection means 18 has a function of detecting a predetermined search command. The search command is a command that is input when an elevator maintenance worker, a building manager, or the like wants to view a video in the car when a string-like object is present at the entrance of the elevator. For example, an elevator maintenance person inputs the search command by operating the buttons (destination button, door open button, door close button) on the car operation panel 12 in a predetermined order and operation method. That is, when a predetermined operation is performed on the car operation panel 12, the operation information is input to the video recording device 16 via the operation control device 15, and the search command detection means 18 detects the search command. Further, an external device such as a personal computer may be configured to be connectable to the video recording device 16, and a search command may be input from the external device. Furthermore, when inputting the search command, the search target period may be input from the car operation panel 12 or an external device.

  The string-like object analyzing means 8 does not always detect the string-like object, and when the search command detecting means 18 detects the search command, it determines whether or not there is a string-like object present at the entrance / exit of the elevator. Specifically, when the search command is detected by the search command detection unit 18, the string-like object analysis unit 8 performs the string-like object according to the procedure shown in FIG. 8 based on the data stored in the operation data storage unit 17. Start analyzing.

FIG. 8 is a flowchart showing the operation of the string-like object analyzing means in Embodiment 3 of the present invention.
When the search command is detected by the search command detection unit 18, the string-like object analysis unit 8 includes the state information of the signal output from the door sensor 1 among the various operation data stored in the operation data storage unit 17. The time information stored in association with the state information (and, if necessary, the load value detected by the scale device 11) is taken in (S101). When the search target period is input together with the search command, the string-like object analyzing unit 8 takes in the data of the designated (input) period from the operation data storage unit 17. When the search target period is not input, the string-like object analyzing unit 8 captures data for all periods stored in the operation data storage unit 17, for example.

  When the necessary data is fetched from the operation data storage unit 17, the string object analysis unit 8 starts the analysis of the sensor detection history by the sensor detection history analysis unit 9 (S102). The sensor detection history analysis means 9 calculates the elapsed time CN_T3 and the number of repetitions NC for detecting the durations T1, T2 and time T3 based on the data fetched from the operation data storage means 17.

  When the sensor detection history analysis by the sensor detection history analysis unit 9 ends, the string-like object detection unit 10 determines the presence or absence of a string-like object present at the entrance of the elevator based on the analysis result (S103). For example, when the string-like object detecting means 10 detects the presence of the string-like object based on any one of the above-mentioned formulas 1 to 3, the time (when the string-like object is present at the entrance of the elevator) The time information is output to the video data search means 20 (S104).

  The string-like object analyzing unit 8 ends the analysis of the string-like object when the processes of S102 to S104 are performed on all the data acquired in S101.

  The video data storage unit 19 has a function of storing video data shot by the monitoring camera 14 in association with information of the time (shooting time).

  The video data search means 20 has a function of searching for data corresponding to a predetermined condition from the (video) data stored in the video data storage means 19 based on the detection result of the string object detection means 10. Have. Specifically, the video data search means 20 uses the data stored in the video data storage means 19 as video data taken by the monitoring camera 14 when a string-like object is present at the entrance of the elevator. Extract. For example, when the presence of the string-like object is detected by the string-like object detecting means 10 and time information is input from the string-like object analyzing means 8, the video data search means 20 stores the image stored in association with the time. Are fetched from the video data storage means 19. When the video data search means 20 extracts the corresponding video data from the data stored in the video data storage means 19, it outputs the extracted video data to the video data output means 21.

  The video data output means 21 has a function of displaying video on the video monitor 13. When the video data is extracted by the video data search unit 20, the video data output unit 21 outputs the extracted video data and causes the video monitor 13 to display the video.

  The video data output destination of the video data output means 21 is not limited to the video monitor 13. For example, when a monitor is installed in a manager room of a building, the video data output unit 21 may output the video data extracted by the video data search unit 20 to the monitor of the manager room. Further, the video data output means 21 may output video data to both the monitor in the manager's room and the video monitor 13 in the car 6.

  If it is an elevator apparatus which has the said structure, the image | video in a cage | basket | car when a string-like object exists in the entrance / exit of an elevator can be extracted, and can be displayed on arbitrary monitors. For example, if the video in the car when a string-like object is present at the entrance of the elevator can be displayed on the monitor in the manager's room, the video is used for alerting for safe use of the elevator. You can also.

Embodiment 4 FIG.
FIG. 9 is a block diagram showing an elevator apparatus according to Embodiment 4 of the present invention.
In the present embodiment, a case will be described in which the video recording device 16 includes operation data storage means 17 and video data storage means 19, and the video confirmation device 22 includes other main functions.

  The video recording device 16 is one device constituting the elevator apparatus. The video recording device 16 is permanently installed in a building equipped with an elevator.

  The video confirmation device 22 is not always provided in the building, but is brought into the building when necessary and connected to the video recording device 16. The video confirmation device 22 has a function of acquiring necessary data from the video recording device 16 and performing analysis of a string-like object, extraction (search) and output (display) of video data. The video confirmation device 22 includes a string-like object analysis unit 8, a search command detection unit 18, a video data search unit 20, and a video data output unit 21.

  The video confirmation device 22 can have any configuration as long as it can acquire operation data and video data from the video recording device 16 and can analyze a string-like object and extract video data based on the acquired data. It does not matter. The video confirmation apparatus 22 may be a dedicated terminal or a personal computer in which predetermined software is installed in advance. The video confirmation device 22 may be configured by both a server and a terminal. In addition, the video confirmation device 22 may be connected to the video confirmation device 22 via a network or serial transmission, or may be provided with a mechanism capable of moving data via a predetermined medium such as a USB memory.

  The search command detection means 18 detects the search command when, for example, predetermined information is input from a keyboard provided in the video confirmation device 22. When the search command is detected by the search command detection unit 18, the string-like object analysis unit 8 receives necessary operation data from the operation data storage unit 17 of the video recording device 16 (signal state information from the door sensor 1 and the scale device 11. Load detection value etc.) is obtained, and the presence / absence of a string-like object present at the entrance / exit of the elevator is determined.

  Based on the detection result of the string-like object detection means 10, the video data search means 20 uses the video recording device 16 to record video data captured by the monitoring camera 14 when a string-like object exists at the entrance of the elevator. Extracted from the video data storage means 19. The video data output unit 21 displays the video data extracted by the video data search unit 20 on a monitor or the like provided in the video confirmation device 22.

If it is an elevator apparatus of the said structure, the analysis of a string-like object and the search of the image | video relevant to a string-like object can be performed with the video confirmation apparatus 22 connectable with the video recording apparatus 16. FIG. For this reason, it is not necessary to always provide each function of the string-like object analysis means 8 etc. on the elevator side.
Others have the same configuration as that of the third embodiment, for example.

Embodiment 5 FIG.
10 is a block diagram showing an elevator apparatus according to Embodiment 5 of the present invention.
In the third and fourth embodiments, the detection history by the door sensor 1 and the video history by the monitoring camera 14 are accumulated in the video recording device 16, and the string-like object is analyzed based on the accumulated data. Explained. In the present embodiment, a case where a string-like object is analyzed by real-time processing will be described.

  The operation control device 15, the video monitor 13, and the monitoring camera 14 are connected to the video control device 23. The display content of the video monitor 13 is controlled by the video control device 23. Video data captured by the monitoring camera 14 is output to the video control device 23. When the operation control device 15 acquires various operation data related to the elevator apparatus, the operation control device 15 outputs the operation data to the video control device 23.

The video control device 23 includes a string-like object analyzing unit 8 and a video data output unit 21.
The string-like object analyzing means 8 determines whether or not there is a string-like object present at the entrance / exit of the elevator by real-time processing. For example, the string-like object analyzing means 8 analyzes the string-like object according to the procedure shown in FIG. 11 based on the operation data input from the operation control device 15.

FIG. 11 is a flowchart showing the operation of the string-like object analyzing means in the fifth embodiment of the present invention.
The string-like object analyzing means 8 takes in the ON signal and the OFF signal output from the door sensor 1 (and, if necessary, the detected value of the loaded load by the scale device 11) from the operation control device 15, and stores it together with the current time. (S201). Next, the string-like object analyzing means 8 analyzes the sensor detection history by the sensor detection history analyzing means 9 (S202). For example, the sensor detection history analysis unit 9 calculates the durations T1 and T2, the elapsed time CN_T3, and the number of repetitions NC based on the data stored in the memory in S201.

  When the sensor detection history analysis by the sensor detection history analysis unit 9 ends, the string-like object detection unit 10 determines the presence or absence of a string-like object present at the entrance of the elevator based on the analysis result (S203). Further, the string-like object analyzing means 8 stores the analysis result of the sensor detection history in S202 (for example, the ON / OFF time of the door sensor 1, durations T1 and T2, elapsed time CN_T3, number of repetitions NC_T3, etc.) on the memory. Save (S204).

  For data stored in the memory in S204, unnecessary data is deleted when the elapsed time CN_T3 exceeds a predetermined value TH_T3, for example. For example, when the elapsed time CN_T3 exceeds a predetermined value TH_T3, the previous off time of the door sensor 1 is left, and the past on time and off time of the door sensor 1, the duration times T1 and T2, the elapsed time CN_T3, and the repetition count NC_T3 are stored in memory. Delete from above.

  For example, when the string-like object detecting unit 10 detects the presence of the string-like object based on any of the conditions of the above formulas 1 to 3, the string-like object detection signal is output to the video data output unit 21. (S205).

  For example, the video data output unit 21 causes the current video monitor 13 to always display the current video captured by the monitoring camera 14. Further, when receiving the string-like object detection signal from the string-like object detecting means 10, the video data output means 21 displays information on the fact that the presence of the string-like object has been detected on the video monitor 13. Information indicating that the presence of the string-like object has been detected may be displayed so as to be superimposed on the video captured by the monitoring camera 14, or may be displayed instead of the video.

  If it is an elevator apparatus of the said structure, a string-like object can be analyzed in real time and a passenger can be alerted etc. when the presence of a string-like object is detected.

The video data output means 21 receives information indicating that the presence of the string-like object has been detected when the string-like object detection signal is received from the string-like object detection means 10, and displays information indicating that the string-like object has been detected. It may be displayed on an internal monitor or the like.
Others have the same configuration as that of the third embodiment, for example.

Embodiment 6 FIG.
12 is a block diagram showing an elevator apparatus according to Embodiment 6 of the present invention.
In the present embodiment, a case will be described in which a string-like object is analyzed by real-time processing, and the elevator is appropriately controlled according to the analysis result.

The operation control device 15 and the string-like object analyzing means 8 are connected so that signals can be transmitted and received with each other.
The string-like object analyzing means 8 determines whether or not there is a string-like object present at the entrance / exit of the elevator by real-time processing. As described above, the string-like object analyzing means 8 analyzes the string-like object according to the procedure shown in FIG. 11 based on the operation data input from the operation control device 15. The string-like object analyzing unit 8 outputs a string-like object analysis result (for example, a string-like object detection signal when the presence of the string-like object is detected) to the operation control device 15.

  The operation control device 15 controls various operations of the elevator based on the analysis result of the string-like object analysis means 8. Specifically, when the string-like object detecting unit 10 detects that a string-like object is present at the entrance / exit of the elevator, the operation control device 15 moves the string-like object from the elevator entrance / exit. The various operations are performed by various devices.

  For example, when the string-like object detecting means 10 detects that a string-like object is present at the entrance of the elevator, the operation control device 15 reduces the door closing speed if the doors 5a and 5b are in the door closing operation. Or, after that, the doors 5a and 5b are reversed and the door opening operation is performed. Moreover, if the presence of a string-like object is detected in the door open state, the operation control device 15 prevents the door closing operation and continues the door open state.

  The operation control device 15 may perform announcement control together with the door control (or instead of the door control). Reference numeral 24 is an announcement device (speaker, buzzer, etc.) provided on the car operation panel 12 of the car 6, and 25 is an announcement control unit for controlling the announcement device 24. When the string-like object detecting means 10 detects that a string-like object is present at the entrance of the elevator, the operation control device 15 outputs a predetermined command to the announcement control unit 25 and alerts the announcement device 24. To give notifications (announcements, buzzers, etc.).

If it is the elevator apparatus of the said structure, an appropriate operation | movement will be implemented when presence of a string-like object is detected, and a string-like object can be moved from the entrance / exit of an elevator.
Others have the same configuration as that of the fifth embodiment, for example.

DESCRIPTION OF SYMBOLS 1 Door sensor 2 Light-emitting part 3 Light-receiving part 4 Control part 5a, 5b Door 6 Car 7 Data storage means 8 String object analysis means 9 Sensor detection log | history analysis means 10 String object detection means 11 Weighing device 12 Car operation panel 13 Video monitor 14 Monitoring camera 15 Operation control device 16 Video recording device 17 Operation data storage means 18 Search command detection means 19 Video data storage means 20 Video data search means 21 Video data output means 22 Video confirmation device 23 Video control device 24 Announcement device 25 Announcement control unit

Claims (17)

A multi-beam type door sensor that arranges a plurality of detection lights at the entrance and exit of the elevator, outputs an on signal when the detection light is blocked, and outputs an off signal when the detection light is not blocked,
Sensor detection history analysis means for detecting the duration of the ON signal output from the door sensor;
Based on the duration of the ON signal detected by the sensor detection history analysis means, a string-like object detection means for determining the presence or absence of a string-like object present at the doorway;
Elevator string-like object detection device.   The string-like object detection means has a duration of the ON signal detected by the sensor detection history analysis means that is not less than a predetermined first reference value and not more than a predetermined second reference value that is longer than the first reference value. In such a case, the string-like object detection device for an elevator according to claim 1, wherein the string-like object is detected at the doorway. A multi-beam type door sensor that arranges a plurality of detection lights at the entrance and exit of the elevator, outputs an on signal when the detection light is blocked, and outputs an off signal when the detection light is not blocked,
Sensor detection history analysis means for detecting the duration of the ON signal and the duration of the OFF signal output from the door sensor;
A string-like object detection means for determining the presence or absence of a string-like object present at the doorway based on both the duration of the ON signal and the duration of the OFF signal detected by the sensor detection history analysis means;
Elevator string-like object detection device.   The string-like object detection means has a duration of an ON signal detected by the sensor detection history analysis means that is not less than a predetermined first reference value and not more than a predetermined second reference value that is longer than the first reference value. And when the duration of the OFF signal immediately after the ON signal is not less than a predetermined third reference value and not more than a predetermined fourth reference value that is longer than the third reference value, the string is connected to the entrance / exit. The string-like object detection device for an elevator according to claim 3, wherein the presence of the object is detected.   The string-like object detection means has a duration of an ON signal detected by the sensor detection history analysis means that is not less than a predetermined first reference value and not more than a predetermined second reference value that is longer than the first reference value. And the duration of the off signal immediately after the on signal is greater than or equal to a predetermined third reference value and less than or equal to a predetermined fourth reference value that is longer than the third reference value. The elevator string-like object detection device according to claim 3, wherein the presence / absence of a string-like object existing at the doorway is determined.   The said string-like object detection means detects that a string-like object exists in the said entrance when the repetition frequency of the said on-off state detected within the predetermined time reaches a predetermined repetition reference value. The elevator string-like object detection device described. A scale device for detecting the load on the elevator car;
With
The said string-like object detection means determines the presence or absence of the string-like object which exists in the said entrance / exit based on the repetition frequency of the said on-off state, and the loading load of the said cage detected by the said balance apparatus. Item 7. A string-like object detection device for an elevator according to item 6.   The said string-like object detection means is a string-like object detection apparatus of the elevator of Claim 7 which resets the repetition frequency of the said on-off state, when the predetermined load fluctuation | variation is detected by the said scale apparatus. An elevator apparatus comprising the string-like object detection device according to any one of claims 1 to 8,
A surveillance camera for photographing the inside of the car;
Video data storage means for storing video data captured by the surveillance camera;
Based on the detection result of the string-like object detection means, the video data taken by the monitoring camera when a string-like object is present at the doorway is included in the data stored in the video data storage means. Video data retrieval means to extract from,
Video data output means for outputting the video data extracted by the video data search means and displaying the video on a predetermined monitor;
Elevator device equipped with. Data storage means for storing state information of the signal output from the door sensor in association with time information;
Search command detection means for detecting a predetermined search command;
With
The sensor detection history analysis means performs a predetermined detection based on data stored in the data storage means,
When the search command is detected by the search command detection unit, the string-like object detection unit determines the presence or absence of a string object present at the entrance based on the detection result of the sensor detection history analysis unit,
The video data search means is taken by the monitoring camera when a string-like object is present at the entrance when the string-like object detecting means detects that a string-like object is present at the entrance. The elevator apparatus according to claim 9, wherein video data is extracted from data stored in the video data storage unit. An elevator apparatus comprising the string-like object detection device according to any one of claims 1 to 8,
Video data output means for displaying information to that effect on a predetermined monitor when the string-like object detecting means detects that a string-like object is present at the entrance;
Elevator device equipped with. A surveillance camera for photographing the inside of the car;
With
The video data output means displays video taken by the monitoring camera on the monitor, and when the string-like object detection means detects that a string-like object is present at the entrance / exit, that fact The elevator apparatus according to claim 11, wherein the information is displayed on the monitor so as to be superimposed on an image captured by the monitoring camera. An elevator apparatus comprising the string-like object detection device according to any one of claims 1 to 8,
An operation control device for performing a predetermined operation for moving a string-like object from the entrance when the string-like object detecting means detects that a string-like object is present at the entrance;
Elevator device equipped with. An announcement device provided in the car;
An announcement control unit for controlling the announcement device;
With
The operation control device outputs a predetermined command to the announcement control unit when the string-like object detecting means detects that a string-like object is present at the entrance and exit, and alerts the announcement device. The elevator apparatus according to claim 13, wherein the notification is performed.   14. The operation control device according to claim 13, wherein when the string-like object detecting unit detects that a string-like object is present at the entrance, the door control speed is lowered or the door-open state is continued. Elevator equipment. Data storage means for storing the state information of the signal output from the multi-beam type door sensor of the elevator in association with the time information;
Video data storage means for storing video data captured by a surveillance camera that captures the interior of an elevator car in association with time information;
A video confirmation device connectable to a video recording device comprising:
Sensor detection history analysis means for detecting the duration of the ON signal output from the door sensor based on the data stored in the data storage means;
Based on the duration of the ON signal detected by the sensor detection history analysis means, a string-like object detection means for determining the presence or absence of a string-like object present at the doorway;
Based on the detection result of the string-like object detection means, the video data taken by the monitoring camera when a string-like object is present at the doorway is included in the data stored in the video data storage means. Video data retrieval means to extract from,
Video data output means for outputting the video data extracted by the video data search means and displaying the video on a predetermined monitor;
Video confirmation device with The sensor detection history analysis means detects the duration of the ON signal and the duration of the OFF signal output from the door sensor,
The string-like object detection means determines the presence or absence of a string-like object present at the entrance / exit based on both the ON signal duration and the OFF signal duration detected by the sensor detection history analysis means. 16. The video confirmation device according to 16.

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