JP2016179887A - Elevator in-car monitoring device - Google Patents
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Abstract
Description
本発明は、エレベーターかご内監視装置に関する。 The present invention relates to an elevator car monitoring device.
従来、介護ホーム等の建物に設置されるエレベーターのかご内に監視カメラを配設し、予め撮影した背景画像と監視カメラが撮影した画像を比較してかご内に滞留者の有無を判定するエレベーターかご内監視装置が提案されている。 Conventionally, a surveillance camera is installed in an elevator car installed in a building such as a nursing home, and the background image captured in advance and the image captured by the surveillance camera are compared to determine whether there is a resident in the car. An in-car monitoring device has been proposed.
また、監視カメラが撮影した画像に対し、フレーム差分法を用いることで、かご内の滞留物は動態物か静止物かを判別することが可能となり、動態物のみ滞留者として検出するようにした技術が開示されている（特許文献１）。 In addition, by using the frame difference method for images captured by the surveillance camera, it is possible to determine whether the stay in the car is a dynamic or stationary object, and only the dynamic object is detected as a staying person. A technique is disclosed (Patent Document 1).
特許文献１に開示された技術は、動態物か静止物かを判定できるものの、静止物がかご内に貼り付けられた貼り紙やかご内の意匠変更が行われたとき、始めの１回は背景画像が更新されていないため、滞留者と誤判定する可能性があるので、管理者に不要の出動をさせてしまう問題があった。 Although the technique disclosed in Patent Document 1 can determine whether the object is a moving object or a stationary object, when the design is changed on a sticker in which the stationary object is affixed in the car or in the car, the first time is the background. Since the image has not been updated, there is a possibility that it may be erroneously determined as a staying person.
本発明の目的は、エレベーターのかご内の貼り紙や意匠変更に係る通報を防止するかご内監視装置を提供することにある。 An object of the present invention is to provide an in-car monitoring device that prevents a notification relating to a sticker or a design change in an elevator car.
上記目的を達成するために本発明は、エレベーターのかご内に設けたカメラと、前記かごの天井に設けた第１の照明と、この第１の照明が点灯し、前記かごに設けたドアが閉じ、前記エレベーターが停止しているとき、前記カメラが撮影した画像を第１基本画像とするとともに、前記第１の照明が点灯し、前記エレベーターが停止し、前記ドアが閉じているとき、前記カメラが撮影した画像と前記第１基本画像の画像差分である第１差分画像を演算し、画像差分有りと判断すると、通信回線を介してエレベーターの異常を遠隔的に監視する監視センターへ、前記かごに滞留物または滞留者有りと通報する滞留物検出装置と、を備えたエレベーターかご内監視装置において、前記第１の照明と異なる照射角度を有する第２の照明を前記かご内に設け、前記滞留物検出装置は、前記第１差分画像の演算を行うとともに、前記第１の照明を消灯及び前記第２の照明を点灯させ、前記かごに設けたドアが閉じ、前記エレベーターが停止しているとき、前記カメラが撮影した画像を第２基本画像とするとともに、前記第２の照明が点灯し、前記エレベーターが停止し、前記ドアが閉じているとき、前記カメラが撮影した画像と前記第２基本画像の画像差分である第２差分画像の演算、及び前記第１差分画像と前記第２差分画像の画像差分の演算比較を行う差分検出部と、前記差分検出部が前記第１差分画像と前記第２差分画像の画像差分の演算比較で、差分が無いと判定すると、第１基本画像記憶部に記憶される前記第１基本画像を更新する基本画像更新部と、を備えたものである。 In order to achieve the above object, the present invention provides a camera provided in an elevator car, a first illumination provided on the ceiling of the cage, a door provided on the cage, the first illumination being lit. When the elevator is stopped, the image taken by the camera is the first basic image, the first illumination is turned on, the elevator is stopped, and the door is closed, When a first difference image that is an image difference between the image captured by the camera and the first basic image is calculated and it is determined that there is an image difference, to the monitoring center that remotely monitors the abnormality of the elevator via the communication line, In an elevator car monitoring device provided with a stagnant detection device for reporting the presence of stagnant or a stagnant person in a car, a second illumination having an irradiation angle different from that of the first illumination is provided in the car. The stagnant detection device calculates the first difference image, turns off the first illumination and turns on the second illumination, closes a door provided in the car, and stops the elevator. And when the image taken by the camera is the second basic image, the second illumination is turned on, the elevator is stopped, and the door is closed, the image taken by the camera is A difference detection unit that performs a calculation of a second difference image that is an image difference of the second basic image, and a calculation comparison of an image difference between the first difference image and the second difference image, and the difference detection unit includes the first difference image A basic image update unit that updates the first basic image stored in the first basic image storage unit when it is determined that there is no difference in the calculation comparison of the image difference between the difference image and the second difference image. Is.
本発明によれば、滞留物検出装置は、第１の照明の点灯によって演算した第１差分画像と、第１の照明とは異なる照射角度を有する第２の照明の点灯によつて演算した第２差分画像とを演算比較し、差分有りの場合は第１の照明と第２の照明の照射角度によって生じる陰影の差異から、滞留物または滞留者と判断し、差分無しの場合は貼り紙等の平面体と判断し、基本画像更新部を起動して第１基本画像を更新するようにしたので、精度の高い滞留物検出が維持できる。 According to the present invention, the stagnant detection device calculates the first difference image calculated by turning on the first illumination and the second illumination calculated by turning on the second illumination having an irradiation angle different from that of the first illumination. Comparing the two difference images, if there is a difference, it is determined as a stay or a person from the difference in shading caused by the irradiation angle of the first illumination and the second illumination. Since it is determined to be a planar body and the basic image update unit is activated to update the first basic image, it is possible to maintain highly accurate stagnant detection.
以下、本発明の一実施形態を図１から図３を用いて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
図１において、エレベーターのかご１には、ドア１１と、かご１内を撮影するカメラ１２と、かご１の天井にかご１を照明する第１の照明である天井照明１３と、ドア１１の上部に第２の照明１４と、が設けられ、天井照明１３と第２の照明１４の点灯及び消灯を制御する照明制御装置２を有しており、この照明制御装置２は、天井照明１３と第２の照明１４を同時に点灯させることはない。ここで、第２の照明１４は天井照明１３と異なる照射角度を有しており、本実施形態では斜め下方の照射角度を有するものとする。 In FIG. 1, an elevator car 1 includes a door 11, a camera 12 for photographing the inside of the car 1, a ceiling light 13 that is a first light for illuminating the car 1 on the ceiling of the car 1, and an upper part of the door 11. The second illumination 14 is provided, and the ceiling illumination 13 and the illumination control device 2 that controls turning on and off of the second illumination 14 are provided. The illumination control device 2 includes the ceiling illumination 13 and the second illumination 14. The two illuminations 14 are not turned on simultaneously. Here, the 2nd illumination 14 has an irradiation angle different from the ceiling illumination 13, and shall have the irradiation angle of the diagonally downward in this embodiment.
また、ドア１１の開閉状態を示す図示しないドアスイッチと、照明制御装置２と、カメラ１２とに接続される滞留物検出装置３を有し、この滞留物検出装置３は、通報装置４を介しエレベーターの異常を遠隔的に監視する監視センター５へ、例えばかご１に滞留物有りの情報を送信する。 The door 11 has a door switch (not shown) indicating the open / closed state of the door 11, a lighting control device 2, and a stagnant detection device 3 connected to the camera 12. For example, information on the presence of stagnant is sent to the car 1 to the monitoring center 5 that remotely monitors the abnormality of the elevator.
また、滞留物検出装置３は、カメラ１２の画像を取得する画像入力部３Ａと、図示しないドアスイッチからドア１１の開閉状態を取得するドア信号入力部３Ｅと、第１基本画像記憶部３Ｂａと第２基本画像記憶部３Ｂｂと第１差分画像記憶部３Ｂｅと第２差分画像記憶部３Ｂｆを少なくとも有する画像記憶部３Ｂと、画像入力部３Ａより入力されるカメラ１２の画像と第１基本画像記憶部３Ｂａ及び第２基本画像記憶部３Ｂｂに記憶された画像を二値化し、二値化した画像の差分を演算比較する差分検出部３Ｃと、差分検出部３Ｃの結果に基づき、第１基本画像６Ａ及び第２基本画像６Ｂの更新有無の判断と更新指令を行う基本画像更新部３Ｄと、を有している。 The staying object detection device 3 includes an image input unit 3A that acquires an image of the camera 12, a door signal input unit 3E that acquires an open / closed state of the door 11 from a door switch (not shown), and a first basic image storage unit 3Ba. An image storage unit 3B having at least a second basic image storage unit 3Bb, a first difference image storage unit 3Be, and a second difference image storage unit 3Bf, an image of the camera 12 input from the image input unit 3A, and a first basic image storage Based on the results of the difference detection unit 3C that binarizes the images stored in the unit 3Ba and the second basic image storage unit 3Bb and compares the difference between the binarized images, and the result of the difference detection unit 3C, the first basic image A basic image update unit 3D that determines whether or not to update 6A and the second basic image 6B and issues an update command.
また、第１基本画像記憶部３Ｂａは、ドア１１が閉じ天井照明１３が点灯し第２の照明１４が消灯している状態で、かご１に図示しない滞留物及び貼り紙が存在しないときの画像入力部３Ａから取得したカメラ１２の画像が第１基本画像として格納され、第２基本画像記憶部３Ｂｂは、ドア１１が閉じ天井照明１３が消灯し第２の照明１４が点灯している状態で、かご１に図示しない滞留物及び貼り紙が存在しないときの画像入力部３Ａから取得したカメラ１２の画像が第２基本画像として格納される。 Further, the first basic image storage unit 3Ba is configured to input an image when there is no stagnant matter or sticker (not shown) in the car 1 in a state where the door 11 is closed, the ceiling light 13 is turned on, and the second light 14 is turned off. The image of the camera 12 acquired from the unit 3A is stored as the first basic image, and the second basic image storage unit 3Bb is in a state where the door 11 is closed, the ceiling illumination 13 is turned off, and the second illumination 14 is turned on. An image of the camera 12 acquired from the image input unit 3A when there is no stagnant or sticker (not shown) in the car 1 is stored as the second basic image.
また、第１差分画像記憶部３Ｂｅは、ドア１１が閉じ天井照明１３が点灯し第２の照明１４が消灯している状態で、画像入力部３Ａから取得したカメラ１２の画像を差分検出部３Ｃが二値化し、この二値化した画像と第１基本画像記憶部３Ｂａに記憶される第１基本画像の二値化差分画像を格納し、第２差分画像記憶部３Ｂｆは、ドア１１が閉じ天井照明１３が消灯し第２の照明１４が点灯している状態で、差分検出部３Ｃが二値化した画像入力部３Ａから取得したカメラ１２の画像を差分検出部３Ｃが二値化し、この二値化した画像と第２基本画像記憶部３Ｂｂに記憶される第２基本画像の二値化差分画像を格納する。 In addition, the first difference image storage unit 3Be uses the difference detection unit 3C to obtain the image of the camera 12 acquired from the image input unit 3A in a state where the door 11 is closed, the ceiling illumination 13 is turned on, and the second illumination 14 is turned off. Stores the binarized image and the binarized difference image of the first basic image stored in the first basic image storage unit 3Ba. The second difference image storage unit 3Bf closes the door 11 The difference detection unit 3C binarizes the image of the camera 12 acquired from the image input unit 3A binarized by the difference detection unit 3C while the ceiling illumination 13 is turned off and the second illumination 14 is turned on. The binarized image and the binarized difference image of the second basic image stored in the second basic image storage unit 3Bb are stored.
また、差分検出部３Ｃが二値化して差分演算した第１差分画像記憶部３Ｂｅと第２差分画像記憶部３Ｂｆの二値化差分画像に対し、差分検出部３Ｃが判断し、差異有りの信号を受信した滞留物検出装置３は、通報装置４を起動し、監視センター５へ滞留物有りの通報を行う。 In addition, the difference detection unit 3C determines the difference between the binarized difference images of the first difference image storage unit 3Be and the second difference image storage unit 3Bf, which have been binarized by the difference detection unit 3C, and a signal having a difference. , The accumulated matter detection device 3 activates the reporting device 4 and notifies the monitoring center 5 that there is a retained matter.
次に、本実施形態の動作の説明を図２、図３を用いて説明する。 Next, the operation of the present embodiment will be described with reference to FIGS.
まず、例えば、かご１の壁に貼り紙が貼り付けられた場合、天井照明１３が点灯状態で、エレベーターが停止しているときドア１１が閉じていることを示すドア閉信号を、ドア信号入力手段（図示省略）から受信した滞留物検出装置３は（ステップＳ１）、差分検出部３Ｃを起動し、差分検出部３Ｃは、画像入力部３Ａより取得したカメラ１２が撮影した画像である図３に示す画像６Ｃと、第１基本画像記憶部３Ｂａの画像である図３に示す第１基本画像６Ａと、を比較し、その差分が所定比率より大きいか否か判断する（ステップＳ２）。 First, for example, when a paper is pasted on the wall of the car 1, a door closing signal indicating that the door 11 is closed when the ceiling lighting 13 is in a lighting state and the elevator is stopped is provided with a door signal input means. The accumulated matter detection device 3 received from (not shown) (step S1) activates the difference detection unit 3C, and the difference detection unit 3C is an image taken by the camera 12 acquired from the image input unit 3A in FIG. The image 6C shown is compared with the first basic image 6A shown in FIG. 3 which is the image of the first basic image storage unit 3Ba, and it is determined whether or not the difference is larger than a predetermined ratio (step S2).
次に、ステップＳ２で、画像６Ｃと第１基本画像６Ａの画像差分が所定比率を超える場合、差分検出部３Ｃは、画像６Ｃと第１基本画像６Ａの画像差分を抽出して二値化し、この二値化した差分画像である図３に示す二値化差分画像６Ｅを、画像記憶部３Ｂの第１差分画像記憶部３Ｂｅへ第１差分画像として記録する（ステップＳ３）。 Next, when the image difference between the image 6C and the first basic image 6A exceeds a predetermined ratio in step S2, the difference detection unit 3C extracts and binarizes the image difference between the image 6C and the first basic image 6A, The binarized difference image 6E shown in FIG. 3 as the binarized difference image is recorded as the first difference image in the first difference image storage unit 3Be of the image storage unit 3B (step S3).
次に、滞留物検出装置３は、照明制御装置２を起動するとともに、天井照明１３の消灯指令信号と第２の照明１４の点灯指令信号を送信すると、照明制御装置２は、天井照明１３を消灯させるとともに、第２の照明１４を点灯させる（ステップＳ４）。 Next, when the stagnant detection device 3 activates the illumination control device 2 and transmits a turn-off command signal for the ceiling illumination 13 and a turn-on command signal for the second illumination 14, the illumination control device 2 turns the ceiling illumination 13 on. The light is turned off and the second illumination 14 is turned on (step S4).
次に、滞留物検出装置３は、差分検出部３Ｃを起動し、差分検出部３Ｃは、画像入力部３Ａより取得したカメラ１２が撮影した画像である図３に示す画像６Ｄと、第２基本画像記憶部３Ｂｂの画像である図３に示す画像６Ｂと、の画像差分を抽出して二値化し、図３に示す二値化差分画像６Ｆを、画像記憶部３Ｂの第２差分画像記憶部３Ｂｆへ第２差分画像として記録する（ステップＳ５）。 Next, the stagnant detection device 3 activates the difference detection unit 3C, and the difference detection unit 3C includes an image 6D shown in FIG. 3 which is an image taken by the camera 12 acquired from the image input unit 3A, and a second basic unit. An image difference between the image 6B shown in FIG. 3 which is an image of the image storage unit 3Bb and the image 6B shown in FIG. 3 is extracted and binarized, and the binary difference image 6F shown in FIG. 3 is converted into a second difference image storage unit of the image storage unit 3B. The second difference image is recorded on 3Bf (step S5).
次に、差分検出部３Ｃは、第１差分画像記憶部３Ｂｅの第１差分画像である図３に示す二値化差分画像６Ｅと、第２差分画像記憶部３Ｂｆの第２差分画像である図３に示す二値化差分画像６Ｆと、の画像差分の比較を行う（ステップＳ６）。 Next, the difference detection unit 3C is a binarized difference image 6E shown in FIG. 3 which is the first difference image of the first difference image storage unit 3Be and a second difference image of the second difference image storage unit 3Bf. 3 is compared with the binarized difference image 6F shown in FIG. 3 (step S6).
ステップＳ６の画像差分の比較にて差分検出部３Ｃは、かご１の壁に貼り付けられた平面体である貼り紙に対する差分は検出できず、図３に示す二値化差分画像６Ｇを得る。 In the comparison of the image differences in step S6, the difference detection unit 3C cannot detect the difference with respect to the sticker that is a flat body attached to the wall of the car 1, and obtains the binarized difference image 6G shown in FIG.
ここで、図３に示すように、天井照明１３の点灯によるカメラ１２の画像である画像６Ｃと、天井照明１３と異なる照射角度を有する第２の照明１４の点灯によるカメラ１２の画像である画像６Ｄと、を比較しても、貼り紙や落書き等の平面体に対して照明による影の発生がなく、ステップＳ６の画像差分の比較にて貼り紙と落し物や滞留者の比較が可能となる。 Here, as shown in FIG. 3, an image 6 </ b> C that is an image of the camera 12 when the ceiling illumination 13 is turned on, and an image that is an image of the camera 12 when the second illumination 14 having an irradiation angle different from that of the ceiling illumination 13 is turned on. Even if 6D is compared, there is no occurrence of shadows due to illumination on a flat body such as a sticker or graffiti, and it becomes possible to compare the sticker with a fallen object or a staying person by comparing image differences in step S6.
次に、ステップＳ６の画像差分の比較にて差分が無いと判断した差分検出部３Ｃは、基本画像更新部３Ｄを起動し、基本画像更新部３Ｄは、画像入力部３Ａより取得したカメラ１２が撮影した画像である図３に示す画像６Ｄを、画像記憶部３Ｂの第２基本画像記憶部３Ｂｂとして更新する（ステップＳ７）。 Next, the difference detection unit 3C that has determined that there is no difference in the image difference comparison in step S6 activates the basic image update unit 3D, and the basic image update unit 3D has the camera 12 acquired from the image input unit 3A. 3 is updated as the second basic image storage unit 3Bb of the image storage unit 3B (step S7).
次に、滞留物検出装置３は、照明制御装置２を起動するとともに、天井照明１３の点灯指令信号と第２の照明１４の消灯指令信号を送信すると、照明制御装置２は、天井照明１３を点灯させるとともに、第２の照明１４を消灯させる（ステップＳ８）。 Next, when the stagnant detection device 3 activates the lighting control device 2 and transmits a lighting command signal for the ceiling lighting 13 and a turn-off command signal for the second lighting 14, the lighting control device 2 turns the ceiling lighting 13 on. While turning on, the 2nd illumination 14 is light-extinguished (step S8).
次に、基本画像更新部３Ｄは、画像入力部３Ａより取得したカメラ１２が撮影した画像である図３に示す画像６Ｃを、画像記憶部３Ｂの第２基本画像記憶部３Ｂｂとして更新する（ステップＳ９）。 Next, the basic image update unit 3D updates the image 6C shown in FIG. 3 that is an image captured by the camera 12 acquired from the image input unit 3A as the second basic image storage unit 3Bb of the image storage unit 3B (step S3). S9).
一方、ステップＳ６の画像差分の比較にて差分が有ると判断した差分検出部３Ｃは、滞留物検出装置３へ滞留物有りの信号を出力し、滞留物検出装置３は通信装置２３を起動し、監視センター５へ滞留物有りの通報を行う（ステップＳ１０）。 On the other hand, the difference detection unit 3C that has determined that there is a difference in the image difference comparison in step S6 outputs a signal indicating that there is a stay to the stay detection apparatus 3, and the stay detection apparatus 3 activates the communication device 23. Then, the presence of a stagnant is notified to the monitoring center 5 (step S10).
次に、滞留物検出装置３は、照明制御装置２を起動するとともに、天井照明１３の点灯指令信号と第２の照明１４の消灯指令信号を送信すると、照明制御装置２は、天井照明１３を点灯させるとともに、第２の照明１４を消灯させる（ステップＳ１１）。 Next, when the stagnant detection device 3 activates the lighting control device 2 and transmits a lighting command signal for the ceiling lighting 13 and a turn-off command signal for the second lighting 14, the lighting control device 2 turns the ceiling lighting 13 on. While turning on, the 2nd illumination 14 is light-extinguished (step S11).
本実施形態によれば、かご内に貼り紙や意匠変更等があっだ場合、天井照明１３が点灯状態で抽出した第１差分画像記憶部３Ｂｅの画像である二値化差分画像６Ｅと、天井照明１３を消灯させ、天井照明１３と異なる照射角度を有する第２の照明１４を点灯させることで抽出した第２差分画像記憶部３Ｂｆの画像である二値化差分画像６Ｆと、画像差分を比較することで、差分無しの場合は貼り紙や意匠変更が有り、差分有りの場合は滞留者や滞留物の存在を検出できる。 According to the present embodiment, when there is a sticker, a design change, or the like in the car, the binarized difference image 6E that is an image of the first difference image storage unit 3Be extracted in a lighting state of the ceiling illumination 13 and the ceiling illumination 13 is turned off, and the image difference is compared with the binarized difference image 6F that is an image of the second difference image storage unit 3Bf extracted by turning on the second illumination 14 having an irradiation angle different from that of the ceiling illumination 13. Thus, when there is no difference, there is a sticker or a design change, and when there is a difference, the presence of a staying person or staying object can be detected.
また、二値化差分画像６Ｅと二値化差分画像６Ｆとの画像差分の比較で、画像差分が無いと判定した場合、第１基本画像６Ａと前記第２基本画像６Ｂを更新するようにしたので、滞留物の検出精度を維持することができる。 Further, when it is determined that there is no image difference in the comparison of the image difference between the binarized difference image 6E and the binarized difference image 6F, the first basic image 6A and the second basic image 6B are updated. Therefore, the detection accuracy of a staying thing can be maintained.
１ かご
１１ ドア
１２ カメラ
１３ 天井照明
１４ 第２の照明
２ 照明制御装置
３ 滞留物検出装置
３Ａ 画像入力部
３Ｂ 画像記録部
３Ｂａ 第１基本画像記憶部
３Ｂｂ 第２基本画像記憶部
３Ｂｅ 第１差分画像記憶部
３Ｂｆ 第２差分画像記憶部
３Ｃ 差分検出部
３Ｄ 基本画像更新部
３Ｅ ドア信号入力部
４ 通報装置
５ 監視センター
６Ａ 第１基本画像
６Ｂ 第２基本画像
６Ｃ，６Ｄ 画像
６Ｅ，６Ｆ，６Ｇ 二値化差分画像
DESCRIPTION OF SYMBOLS 1 Car 11 Door 12 Camera 13 Ceiling illumination 14 Second illumination 2 Illumination control device 3 Stagnant detection device 3A Image input unit 3B Image recording unit 3Ba First basic image storage unit 3Bb Second basic image storage unit 3Be First difference image Storage unit 3Bf Second difference image storage unit 3C Difference detection unit 3D Basic image update unit 3E Door signal input unit 4 Notification device 5 Monitoring center 6A First basic image 6B Second basic image 6C, 6D Images 6E, 6F, 6G Binary Difference image
Claims (2)
前記第１の照明と異なる照射角度を有する第２の照明を前記かご内に設け、
前記滞留物検出装置は、
前記第１差分画像の演算を行うとともに、前記第１の照明を消灯及び前記第２の照明を点灯させ、前記かごに設けたドアが閉じ、前記エレベーターが停止しているとき、前記カメラが撮影した画像を第２基本画像とするとともに、前記第２の照明が点灯し、前記エレベーターが停止し、前記ドアが閉じているとき、前記カメラが撮影した画像と前記第２基本画像の画像差分である第２差分画像の演算、及び前記第１差分画像と前記第２差分画像の画像差分の演算比較を行う差分検出部と、
前記差分検出部が前記第１差分画像と前記第２差分画像の画像差分の演算比較で、差分が無いと判定すると、第１基本画像記憶部に記憶される前記第１基本画像を更新する基本画像更新部と、
を備えたことを特徴とするエレベーターかご内監視装置。 When the camera provided in the elevator car, the first illumination provided on the ceiling of the cage, the first illumination is turned on, the door provided in the cage is closed, and the elevator is stopped, An image captured by the camera is used as a first basic image, the first illumination is turned on, the elevator is stopped, and the door is closed. When the first difference image, which is an image difference between the two, is calculated and it is determined that there is an image difference, the monitoring center that remotely monitors the abnormality of the elevator via the communication line is notified that there is a stagnant thing or a stagnant person In an elevator car monitoring device equipped with a stagnant detection device,
A second illumination having an irradiation angle different from that of the first illumination is provided in the cage;
The stagnant detection device includes:
The first difference image is calculated, the first illumination is turned off and the second illumination is turned on, and the camera is photographed when the door provided on the car is closed and the elevator is stopped. The second basic image, and when the second illumination is turned on, the elevator is stopped, and the door is closed, an image difference between the image taken by the camera and the second basic image A difference detection unit that performs a calculation of a second difference image and a calculation comparison of image differences between the first difference image and the second difference image;
If the difference detection unit determines that there is no difference in the operation comparison of the image difference between the first difference image and the second difference image, the basic to update the first basic image stored in the first basic image storage unit An image update unit;
An elevator car monitoring device characterized by comprising:
前記滞留物検出装置は、
前記第１基本画像と前記第２基本画像を記憶する基本画像記憶部と、
前記第１差分画像と前記第２差分画像を記憶する差分画像記憶部と、
を少なくとも備えたことを特徴とするエレベーターかご内監視装置。 In the elevator car monitoring device according to claim 1,
The stagnant detection device includes:
A basic image storage unit for storing the first basic image and the second basic image;
A difference image storage unit for storing the first difference image and the second difference image;
An elevator car monitoring device characterized by comprising at least
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