JP5323542B2 - Escalator abnormality detection system and abnormality detection method - Google Patents

Description

  The present invention relates to an abnormality detection system and an abnormality detection method for detecting abnormal boarding on an escalator.

  When monitoring an escalator in consideration of user safety and the like, as one of the monitoring methods, a method in which a monitoring person monitors an image displayed on a monitor can be considered. That is, the escalator periphery and the escalator user are photographed by the camera, and the monitor monitors the camera image displayed on the monitor. However, such a monitoring method places a heavy burden on the observer who is forced to strain for a long time, and the observer may overlook the occurrence of an abnormality due to fatigue or relaxation.

Various proposals have been made for such problems.
For example, as a conventional technique, it is detected that the escalator user has fallen from the image data captured by the camera, or that the user has entered the outside of the moving handrail. Have been proposed (see Patent Documents 1 and 2).
Further, as another conventional technique, there has been proposed one that determines the degree of congestion at an entrance / exit of an escalator from image data captured by a camera, and appropriately selects a traveling speed of a step based on the determination result (for example, And Patent Document 3).

JP-A-10-265163 Japanese Patent Laid-Open No. 11-60132 JP 2007-55727 A

  In escalators, even if each user is getting in properly, if the boarding continues so as to greatly exceed the transport capacity, the load on the drive unit will gradually become excessive, and in some cases the drive unit will be in the load. It becomes impossible to endure and normal operation cannot be performed. Conventional escalators including those described in Patent Documents 1 to 3 cannot detect such an abnormality in boarding and cannot solve the above problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an escalator abnormality detection system and an abnormality detection method capable of reliably detecting abnormal boarding on an escalator. is there.

An abnormality detection system for an escalator according to the present invention includes an imaging unit that captures a step that passes a predetermined position in the vicinity of the entrance of the escalator, and a person on the step based on image data from the imaging unit. User number determination means for determining the number of users passing through the position every predetermined unit time, storage means for storing a predetermined first user number reference value, and user number determination means And an abnormality determining means for determining a predetermined boarding abnormal state with respect to the escalator based on the duration or frequency of the state where the number of users per unit time is equal to or greater than the first user number reference value.

An escalator abnormality detection method according to the present invention is an escalator abnormality detection method including an imaging means for photographing a step passing through a predetermined position in the vicinity of a escalator entrance, wherein the escalator abnormality detection method is based on image data from the imaging means. By detecting the upper person, the step of determining the number of users passing through the predetermined position by the number-of-users determining unit every predetermined unit time, and the number of users per unit time determined by the number-of-users determining unit A step of measuring the duration of the state in which the number of users is equal to or greater than a predetermined first user number reference value, and a predetermined duration for the escalator when the measured duration exceeds a predetermined first duration reference value Determining a boarding abnormality state.
Further, the escalator abnormality detection method according to the present invention is an escalator abnormality detection method including an imaging means for photographing a step passing through a predetermined position near the entrance of the escalator, and is based on image data from the imaging means. A step of determining the number of users passing through a predetermined position for each predetermined unit time by the number-of-users determining means by detecting a person on the step and a unit time determined by the number-of-users determining means a step of user number per measures the frequency of state is the first user number reference value or more predetermined, when the frequency measured exceeds a first frequency reference value of a predetermined, given for escalators boarding Determining an abnormal state.

  According to the present invention, it is possible to reliably detect abnormal boarding on the escalator.

It is a block diagram which shows the abnormality detection system of the escalator in Embodiment 1 of this invention. It is a side view which shows the escalator provided with the abnormality detection system shown in FIG. It is a figure for demonstrating the function of a user number determination means. It is a flowchart which shows operation | movement of the abnormality detection system of the escalator in Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the abnormality detection system of the escalator in Embodiment 1 of this invention.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a block diagram showing an escalator abnormality detection system according to Embodiment 1 of the present invention, and FIG. 2 is a side view showing an escalator equipped with the abnormality detection system shown in FIG. In the following, as an example of the escalator, an up escalator used when moving from the lower floor to the upper floor will be described in detail, and description of the other examples will be omitted.

  1 and 2, 1 is a main frame of an escalator spanned between the upper and lower floors, 2 is a lower entrance / exit (in this embodiment, entrance), and 3 is an upper entrance / exit (this embodiment) , 4 is a step, 5 is a moving handrail provided on both sides of the step 4, and 6 is a control panel that controls the entire escalator, such as control of the step 4 and the moving handrail 5. The step 4 is for the escalator user to get on when moving from the entrance 2 to the exit 3. Various controls such as the running speed and stop of the step 4 are performed by the control panel 6.

7 is an imaging means (camera etc.) provided above the entrance 2 of the escalator, 8 is a display means (LED display etc.) for displaying characters and the like to the escalator user, and 9 is used. Announcement means for providing information to a person by voice.
The imaging means 7 has a shooting range appropriately set so that the step 4 passing through a predetermined position near the entrance 2 can be shot from above. That is, a user who moves to the upper floor using the escalator is photographed from above by the imaging means 7 when the step 4 passes the predetermined position after moving from the entrance 2 onto the step 4. .

  The display means 8 and the announcement means 9 are appropriately installed above the entrance 2, the exit 3, and the intermediate inclined portion, and have a function of notifying various information to the escalator user. . The display means 8 and the announcement means 9 are shown as an example of means for notifying the user of information related to the escalator. That is, if possible, the above function may be realized by one of the display means 8 and the announcement means 9, or the above function may be realized by other means for providing information to the user.

  Reference numeral 10 denotes a control device to which the control panel 6, the imaging means 7, the display means 8, and the announcement means 9 are connected. The control device 10 has a function of determining the boarding state of the escalator from the image data taken by the imaging means 7 and driving information of the escalator, and a function of controlling the operation of each device according to the determination result. Yes. Specifically, in order to realize each of the above functions, the control device 10 includes a user number determination unit 11, an abnormality determination unit 12, a storage unit 13, a control unit 14, a notification unit 15, and a warning unit 16. .

The number-of-users determining unit 11 has a function of determining the number of users passing through the predetermined position every predetermined unit time by detecting a person on the step 4 based on the image data from the imaging unit 7. Have. A function for detecting a person from the image data is provided in the person detection means 17.
Hereinafter, specific functions of the user number determination unit 11 will be described with reference to FIG. FIG. 3 is a diagram for explaining the function of the user number determination means, and shows a state in which the vicinity of the entrance 2 of the escalator is viewed from above.

  In FIG. 3, each solid circle surrounding the solid arrow indicates a stationary user, and each broken circle surrounding the dashed arrow indicates a walking user (pedestrian). Reference numeral 7a denotes an area photographed by the image pickup means 7 (hereinafter referred to as “shooting range 7a”), and reference numeral 17a represents an area where the person detection means 17 performs person detection (hereinafter referred to as “detection range 17a”).

  The imaging means 7 photographs from above the imaging range 7a including the step 4 that has reached a predetermined position near the entrance 2 and the users (stopped users and walking users) on the steps 4. The image data is output to the control device 10. In the control device 10, first, the person detection unit 17 extracts the detection range 17 a from the image data transmitted from the imaging unit 7, analyzes the extracted portion, and detects a person in the detection range 17 a. . The function of the person detection means 17 can be realized by adopting specific means described in, for example, Japanese Patent Application Laid-Open No. 2008-84269. The number-of-users determination unit 11 detects the number of users in the detection range 17a for each unit time based on the detection result by the person detection unit 17.

  In the example shown in FIG. 3, the detection range 17 a has a front-rear width (width in the running direction of the step 4) set equal to the front-rear width of the step 4, and the left-right width is slightly smaller than the left-right width of the step 4. It is set so as to protrude largely on both sides of the step 4. For this reason, it is possible to detect the number of users for each step 4 by appropriately setting the determination cycle of the user number determination means 11 according to the traveling speed of the step 4 and the like.

  Then, the abnormality determination unit 12 determines a predetermined boarding abnormal state with respect to the escalator based on the number of users per unit time determined by the user number determination unit 11.

  Specifically, the abnormality determination unit 12 determines abnormality and normality based on whether or not the escalator boarding state meets a predetermined condition based on information on the number of users per unit time. For example, escalator users generally get on every other step 4 as shown in FIG. 3 regardless of whether or not they are walking. That is, an interval corresponding to one step 4 is usually formed between the users before and after the user. For this reason, the abnormality determination means 12 detects a boarding abnormality (predetermined boarding abnormal state) when the state where the user has boarded without a gap continues for a predetermined time or when the occurrence frequency of such a state is high. .

  In addition, in order to determine other boarding abnormal states, the abnormality determination unit 12 includes a passenger number determination unit 18. The passenger number determination means 18 determines the number of passengers in the entire escalator (or a predetermined part of the escalator) by adding the number of users determined by the user number determination means 11 for a predetermined period in the past. The abnormality determining unit 12 detects a boarding abnormality (predetermined boarding abnormal state) when it is determined from the number of passengers detected by the passenger number determining unit 18 that an excessive load is applied to the escalator.

  Note that various parameters (for example, a user reference value, a duration reference value, a passenger reference value, etc., which will be described later) for the abnormality determination unit 12 to determine a boarding abnormal state are stored in the storage unit 13 in advance. .

Further, when the abnormality determination unit 12 detects a predetermined boarding abnormality state, the abnormality determination unit 12 outputs an operation command to the control unit 14, the notification unit 15, and the warning unit 16, and causes various devices to perform operations according to the abnormality state. .
Specifically, the control means 14 has a function of controlling the control panel 6, and receives an operation command from the abnormality determination means 12, so that an operation corresponding to an abnormal state (speed switching or stopping of the step 4) Etc.) to the escalator.

In addition, the reporting unit 15 has a function of reporting to the outside, and when an operation command is input from the abnormality determination unit 12, a report corresponding to the abnormal state is sent to an escalator administrator, a maintenance company, or the like. Do.
The warning unit 16 has a function of giving a warning or warning to the user. When the operation command is input from the abnormality determination unit 12, the warning unit 16 controls the display unit 8 or the announcement unit 9 to detect an abnormal state. A warning or warning is given to the user.

  Table 1 below shows specific contents of announcements made from the announcement means 9. The announcement means 9 makes an announcement shown in, for example, A to C according to the determination result of the abnormality determination means 12, and alerts the user.

  Next, based on FIG.4 and FIG.5, the specific operation | movement of the abnormality detection system which has the said structure is demonstrated. 4 and 5 are flowcharts showing the operation of the escalator abnormality detection system according to Embodiment 1 of the present invention. The operation flow shown in FIGS. 4 and 5 shows a case where an abnormality in boarding is detected in an escalator equipped with a step 4 having a width of 1000 mm. In addition, the storage means 13 stores in advance two-stage user number reference values, two types of duration reference values, and one type of passenger reference value.

  The user number reference value is compared with the number of users determined by the user number determination means 11 as one condition for determining a predetermined boarding abnormality state. The storage means 13 stores, for example, two people as the first user number reference value and three people as the second user number reference value. In the escalator provided with the step 4 having a width of 600 mm, for example, one person is stored in the storage unit 13 as the first user number reference value and two persons are stored as the second user number reference value in advance.

The duration reference value is compared with the time (duration) for which the predetermined state continues as a condition for determining the predetermined boarding abnormality state. For example, a first duration reference value and a second duration reference value are stored in the storage unit 13.
Further, the passenger number reference value is compared with the number of passengers determined by the passenger number determination means 18 as one condition for determining a predetermined boarding abnormality state. In the present embodiment, for example, the total number of users when two users are riding on each step 4 arranged between the entrance 2 and the exit 3 is 100% and is 70%. The corresponding number of people is stored in the storage means 13 as the above-mentioned passenger number reference value.

In the control device 10, first, conditions are set for determining an abnormality in boarding the escalator. Specifically, the floor height information H of the escalator is acquired from the storage means 13, and the speed information S of the escalator (step 4) is acquired from the control panel 6 (S101, S102). Next, based on the speed information S acquired in S102, the passage time of one step 4, that is, the position where the rear end of the tread 4 of the step 4 reaches the position after reaching the position where the tread tip of the step 4 is running. calculates the time required until it has passed through, and updates the operation result as the unit time T _a (S103). Further, based on the floor height information H and the speed information S acquired in S101 and S102, the time required for one step 4 to travel from the entrance 2 to the exit 3 is calculated, and the calculation result is calculated as the travel time. update as T _b (S104).

If the condition settings for performing the abnormality determination is completed, the control device 10, then, based on the image data transmitted from the imaging unit 7, the user number determination unit 11, a user per the unit time T _a detecting the number _{P a} (S105). That is, by this process shown in S105, the number of users on the step 4 is counted for each step 4 that has passed a predetermined position near the entrance 2.

Then, abnormality determination unit 12, based on the user number P _a per unit time T _a detected in S105, it is determined whether the abnormality boarded for escalators.

Specifically, the abnormality determining means 12, first storage means second user number reference value from 13 to get the (three) users per detected unit time T _a in S105 number P _a and the second Comparison with the user number reference value is performed (S106). Here, if the user number P _a per unit time T _a is 3 or more people, regardless of the other conditions (e.g., the duration of the state the user number P _a is 3 or more and frequency, etc.) First, the boarding abnormality state that three people are on one step 4 is determined (S107). In such a case, the abnormality determination unit 12 outputs an operation command to the warning unit 16 and the notification unit 15, for example, broadcasts the announcement A shown in Table 1 from the announcement unit 9 and sends it to the administrator or maintenance company. A report is made (S108, S109).

If the user number P _a per unit time T _a is determined to be less than three in S106, and was carried out the operations of S108 and S109 after it is determined that the user number P _a is 3 or more when the abnormality determination unit 12 then obtains the first user number reference value from the storage means 13 (two), the user number P _a and the first usage of the detected per unit time T _a in S105 A comparison is made with the reference number of people (S110).

Here, if the user number P _a per unit time T _a is 2 or more, the abnormality judging means 12, the user number P _a is 2 or more at which time the state continues (duration D) is measured (the count of the duration D is started, or the count is continued if the count of the duration D has been started so far) (S111). Then, abnormality determination unit 12 acquires from the storage means 13 of the first duration reference value _{D 0,} a comparison is made with the duration D and the first duration reference value _{D 0} (S112, S113).

Here, when the duration D exceeds the first duration reference value D ₀ , the abnormality determination unit 12 determines that the state where two users are on one step 4 is continuous, A boarding abnormality, that is, a warning level congestion state is detected (S114). In such a case, the abnormality determination unit 12 outputs an operation command to the warning unit 16 and the notification unit 15 to cause each device to perform a predetermined operation when a warning level congestion state is detected. Specifically, the abnormality determination unit 12 broadcasts the announcement B shown in Table 1 from the announcement unit 9 and notifies the administrator or the maintenance company (S115, S116). Then, the process proceeds to S119.

In the case where the user number P _a per unit time T _a in S110 is determined to be less than two, the abnormality determination section 12 determines that boarding every footstep 4 is successful, the The duration time D is cleared (S117). Further, if a predetermined boarding abnormality state has been detected so far, the abnormality determination means 12 cancels the abnormality detection, and stops operations associated with the abnormality detection, such as display, announcement, notification, etc. (S118). The process proceeds to S119.
Further, if the duration D in S113 is determined that the first is the duration reference value D ₀ or less, the abnormality judging section 12 proceeds to S119 without clearing the duration D during measurement.

In S119, the abnormality determination means 12 calculates the number of passengers P of the entire escalator at that time by the passenger number determination means 18. Specifically, passengers determining means 18, by adding all the users number P _a detected from the current to the running time T _b before, obtaining the number of passengers P. Then, the abnormality determination unit 12 acquires the passenger number reference value P ₀ from the storage unit 13 and compares the passenger number P calculated in S119 with the passenger number reference value P ₀ (S120, S121).

Here, when the number of passengers P is equal to or greater than the passenger number reference value P ₀ , the abnormality determination means 12 is the time during which the state where the number of passengers P is equal to or greater than the passenger number reference value P ₀ continues (continuation time E). (The count of the duration E is started, or the count is continued if the count of the duration E has been started so far) (S122). Then, abnormality determination unit 12 acquires from the storage means 13 the second duration reference value _{E 0,} is compared with the duration E and the second time duration reference value _{E 0} (S123, S124).

In S124, the duration E is determined to be better than the second duration reference value E _0, the abnormality determination unit 12 detects the boarding abnormality of passengers exceeded (S125). In such a case, the abnormality determination unit 12 outputs an operation command to the warning unit 16, the control unit 14, and the notification unit 15, and causes each device to perform a predetermined operation when an excess number of passengers is detected. Specifically, the abnormality determination unit 12 broadcasts the announcement C shown in Table 1 from the announcement unit 9 to alert (S126). Moreover, the abnormality determination means 12 stops the step 4 by the control panel 6 and notifies the manager or the maintenance company (S127, S128).

Incidentally, if the number of passengers P is determined to be less than the number of passengers the reference value P ₀ in S121, the abnormality judging means 12, boarded to the entire escalator is judged to have been normally performed, clear the duration E (S129). Moreover, the abnormality determination means 12 will cancel | release the abnormality detection, if the predetermined boarding abnormal state has been detected by then (S130).
Incidentally, if the duration E in S124 is determined to be equal to or less than the second duration reference value E _0, the abnormality determination unit 12 continues the measurement of the duration E.

  And when the above process is complete | finished, the control apparatus 10 returns to S101, and performs the process similar to the above about the step 4 which drive | works 1 back.

According to Embodiment 1 of the present invention, it is possible to reliably detect abnormal boarding on an escalator, and to appropriately perform control according to the detection result.
That is, in the abnormality detection system having the above configuration, the step 4 near the entrance 2 of the escalator is photographed by the imaging means 7, and the number of users per unit time passing through a predetermined position near the landing 2 is determined from the image data. And a predetermined boarding abnormal state is determined. Therefore, it is possible to make an accurate determination based on the actual user's boarding state, and for example, it is possible to take appropriate measures before the load applied to the escalator drive device becomes excessive.

  Further, by appropriately setting the user number reference value, the duration time reference value, the passenger number reference value, and the like in the storage means 13, appropriate determination according to the type and model of the escalator can be made. For this reason, the abnormality detection system having the above configuration can be easily applied not only to a new escalator but also to an existing escalator.

In the operation described based on FIGS. 4 and 5, when the user number P _a per unit time T _a is 2 or more in S110, continues the state the user number P _a is 2 or more people The case where the running time (duration D) is measured has been described. However, the abnormality judging means 12, in S111, the user number P _a may be measured how often the state is 2 or more occurs. In such a case, the abnormality determination unit 12 acquires a predetermined first frequency reference value from the storage unit 13 and compares the measured frequency with the first frequency reference value. Then, the abnormality determination unit 12 determines boarding abnormality when the measured frequency exceeds the first frequency reference value.

Further, the abnormality judging means 12, in S111 to S113, measured both the frequency of occurrence of state according to the time condition user number P _a is 2 or more is continued for each of the measured values, You may compare with a reference value. In this case, the abnormality determination unit 12 determines a boarding abnormality when, for example, one of the duration and the frequency exceeds a corresponding reference value.

Similarly, the abnormality judging means 12, in S122, the state passengers P is the number of passengers the reference value P ₀ or may be measured frequency of occurrence. In such a case, the abnormality determination unit 12 acquires a predetermined second frequency reference value from the storage unit 13 and compares the measured frequency with the second frequency reference value. Then, the abnormality determination unit 12 determines boarding abnormality when the measured frequency exceeds the second frequency reference value. Further, the abnormality judging means 12, in S122 to S124, measured both the frequency of occurrence of state according to the time passengers P is continued the state is the number of passengers the reference value P ₀ or more, each measurement value May be compared with a reference value. In this case, the abnormality determination unit 12 determines a boarding abnormality when, for example, one of the duration and the frequency exceeds a corresponding reference value.

1 main frame, 2 lower entrance (entrance), 3 upper entrance (exit), 4 steps,
5 moving handrail, 6 control panel, 7 imaging means, 7a imaging range, 8 display means,
9 Announcement means, 10 Control device, 11 Number of users judgment means,
12 abnormality determination means, 13 storage means, 14 control means, 15 reporting means,
16 warning means, 17 person detection means, 17a detection range,
18 Passenger number judging means

Claims (8)

Imaging means for photographing a step passing through a predetermined position near the entrance of the escalator;
A number-of-users determining unit that determines the number of users passing through the predetermined position every predetermined unit time by detecting a person on the step based on image data from the imaging unit;
Storage means for storing a predetermined first user reference value;
Based on the duration or frequency of the state in which the number of users per unit time determined by the number-of-users determination means is greater than or equal to the first user number reference value, a predetermined boarding abnormal state with respect to the escalator is determined. An abnormality determination means;
An escalator abnormality detection system characterized by comprising: The storage means stores a second user number reference value having a value larger than the first user number reference value,
Abnormality determining means, when the user number which is determined by the user number determining means is said second user number reference value or more, regardless of the duration and frequency of that state, given boarded abnormal state for escalators The escalator abnormality detection system according to claim 1 , wherein: Passenger number determination means for determining the total number of escalators or a predetermined number of passengers by adding the number of users determined by the user number determination means for the past predetermined period;
Further comprising
The abnormality determination means determines a predetermined boarding abnormality state with respect to the escalator based on a duration or frequency of a state where the number of passengers determined by the passenger number determination means is equal to or larger than a predetermined passenger number reference value. The escalator abnormality detection system according to claim 1 or 2 . An escalator abnormality detection method comprising an imaging means for photographing a step passing through a predetermined position in the vicinity of a escalator entrance,
Determining the number of users passing through the predetermined position by a predetermined number of unit times by a user number determination unit by detecting a person on the step based on image data from the imaging unit;
Measuring the duration of the state in which the number of users per unit time determined by the user number determination means is equal to or greater than a predetermined first user number reference value;
Determining a predetermined boarding abnormal state with respect to the escalator when the measured duration exceeds a predetermined first duration reference value;
An escalator abnormality detection method characterized by comprising: An escalator abnormality detection method comprising an imaging means for photographing a step passing through a predetermined position in the vicinity of a escalator entrance,
Determining the number of users passing through the predetermined position by a predetermined number of unit times by a user number determination unit by detecting a person on the step based on image data from the imaging unit;
Measuring the frequency of the state in which the number of users per unit time determined by the number of users determination unit is equal to or greater than a predetermined first user number reference value;
Determining a predetermined boarding abnormal state with respect to the escalator when the measured frequency exceeds a predetermined first frequency reference value;
An escalator abnormality detection method characterized by comprising: Determining whether the number of users determined by the number-of-users determination means is greater than or equal to a second user number reference value having a value greater than the first user number reference value;
If the user number determination unit user number which is determined by is the second user number reference value or more, regardless of the duration and frequency of the condition, determining a predetermined boarding abnormal state for escalators When,
Escalator abnormality detection method according to claim 4 or claim 5, characterized in that with a. A step of determining the total number of escalators or a predetermined number of passengers by adding the number of users determined by the number-of-users determination means for a predetermined period in the past;
Measuring the duration of the state where the determined number of passengers is equal to or greater than a predetermined passenger number reference value;
Determining a predetermined boarding abnormal state with respect to the escalator when the measured duration exceeds a predetermined second duration reference value;
The escalator abnormality detection method according to any one of claims 4 to 6 , further comprising: A step of determining the total number of escalators or a predetermined number of passengers by adding the number of users determined by the number-of-users determination means for a predetermined period in the past;
Measuring the frequency of the state where the determined number of passengers is equal to or greater than a predetermined passenger number reference value;
A step of determining a predetermined boarding abnormal state with respect to the escalator when the measured frequency exceeds a predetermined second frequency reference value;
The escalator abnormality detection method according to any one of claims 4 to 6 , further comprising:

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