Cart Detector

Abstract

To realize a function capable of informing the state of a sterilization process to an operator after putting a cart containing objects to be sterilized into a sterilization chamber, in an existing installed sterilizer.SOLUTION: A cart detector 30 provided separately from a sterilizer 10 includes: a sensor 32; a control unit 34 capable of data communication with a sterilizer control unit 50 that controls the operation of the sterilizer 10; a first display unit 36 that displays that a cart 20 is housed in the sterilizer 10 by detecting the moving direction of the cart 20 with respect to the sterilizer 10 by the sensor 32; and a second display unit 38 that displays that a sterilization process in the sterilizer 10 has been completed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a device for detecting a cart being carried into a sterilization device. To Regarding. [Background technology]

[0002] In hospitals and the like, it is necessary to sterilize objects that require sterilization, such as medical bandages, scalpels, forceps, surgical gowns, etc. To sterilize such objects, a steam sterilizer having a pressure vessel for housing the objects is often used. A typical steam sterilizer operates by introducing saturated steam into a pressure vessel, pressurizing and heating it, and maintaining a certain pressure and temperature for a certain period of time to sterilize the items to be sterilized.

[0003] In addition, for items made of non-heat-resistant plastics, rubber, etc. that are not suitable for sterilization with high-pressure steam, sterilization is performed using an ethylene oxide gas sterilization device that uses ethylene oxide gas, which can be sterilized at a low temperature.

[0004] In such sterilization apparatus, if the door of the sterilization chamber is opened carelessly, high temperature and pressure steam or toxic ethylene oxide gas may leak, which is very dangerous and will interrupt the sterilization process, requiring it to be carried out again.

[0005] In view of this, a sterilization apparatus has been proposed that checks for an abnormality in the door locking means not only before the start of the preparation process but also before the sterilization process in order to prevent the risk of gas leakage (for example, Patent Document 1).

[0006] The actions of the worker using the sterilization device are to first turn on the power to the sterilization device, open the door, place the cart containing the items to be sterilized in the sterilization chamber, close the door, and then turn on the start switch to start the sterilization process. The door locking mechanism operates after the start switch is turned on, preventing the door from being opened accidentally during the sterilization process.

[0007] In this way, the door locking mechanism in the sterilization apparatus only operates when the operator turns on the start switch that initiates the sterilization process. On the other hand, the door can be opened freely unless the start switch is turned on. In other words, after the cart is placed inside the sterilization chamber, it is possible to take actions such as pulling the cart out of the chamber and adding more items to be sterilized.

[0008] However, for example, if an operator places a cart containing items to be sterilized into the sterilization chamber and then leaves the sterilization device without starting the sterilization process (without turning on the start switch), the door can be opened and closed because the start switch has not yet been turned on, and other operators may mistakenly believe that the items to be sterilized contained in the sterilization device have already been sterilized and pull out the cart.

[0009] If the operator mistakenly believes that sterilization is complete and pulls the cart out of the sterilization device, an accident may occur, such as using unsterilized objects. Therefore, Patent Document 2 discloses a configuration that can inform the operator that the sterilization process is not yet complete if the cart is stored in the sterilization chamber and then removed from the sterilization chamber before the sterilization process begins. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent No. 5910853 [Patent Document 2] JP 2020-146454 A Summary of the Invention [Problem to be solved by the invention]

[0011] A configuration like that described in Patent Document 2 requires the sterilization equipment to be equipped in advance with a sensor that detects the insertion and removal of the cart, and a device that notifies the operator if the sensor detects that the cart has been removed from the sterilization chamber when the start switch is not turned on. However, existing sterilization equipment that has already been installed does not have the above-mentioned configuration, so there is a possibility of accidents occurring, such as a person mistakenly thinking that sterilization is complete and pulling the cart out of the sterilization equipment, resulting in the use of unsterilized objects.

[0012] Therefore, the present invention has been made to solve the above problems, and its object is to provide a cart detection device that can be realized in an existing sterilization apparatus that has already been installed, which has a function of informing an operator of the status of the sterilization process after the cart containing the objects to be sterilized is placed into the sterilization chamber, so that the cart is not removed from the sterilization chamber before the sterilization process is completed. [Means for solving the problem]

[0013] According to the cart detection device of the present invention, the cart detection device is provided separately from the sterilization device into which the cart is carried, and detects the direction of movement of the cart capable of storing objects to be sterilized relative to the sterilization device, When the device is installed in a sterilization apparatus where the cart is loaded and unloaded through a door provided only on the front side of the sterilization tank in which the cart is stored, The sterilization apparatus includes a sensor that detects the front and rear of a cart, a control unit capable of data communication with a sterilization apparatus control unit that executes operational control of the sterilization apparatus, a first display unit that displays that the cart is stored in the sterilization apparatus by detecting the moving direction of the cart relative to the sterilization apparatus with the sensor, and a second display unit that displays that the sterilization process in the sterilization apparatus has been completed. When the sensor detects the front part and then the rear part of the cart, the control unit determines that the cart has been stored and turns on the first display unit, and when a sterilization process completion signal is received from the sterilization device control unit after the first display unit is turned on, the control unit turns on the second display unit, and when the sensor detects the rear part and then the front part of the cart, the control unit turns off the displays of the first display unit and the second display unit. It is characterized by the following. By adopting this configuration, a function can be realized in an already installed sterilization device that, after the cart containing the items to be sterilized is placed into the sterilization device, the second display unit lights up when the sterilization process is completed, informing the operator that the cart can be removed.

[0015] According to the cart detection device of the present invention, the cart detection device is provided separately from the sterilization device into which the cart is carried, and detects the direction of movement of the cart capable of storing objects to be sterilized relative to the sterilization device,In the case where the sterilization tank in which the cart is stored has doors on both the front and back, and the cart is stored from the front and removed from the back, a sensor that detects the front and rear of the cart, a first display unit that displays that the cart is stored in the sterilization apparatus by detecting the direction of movement of the cart relative to the sterilization apparatus using the sensor, and a second display unit that displays that the sterilization process in the sterilization apparatus has been completed, and is capable of data communication with a sterilization apparatus control unit that controls the operation of the sterilization apparatus, An overall control unit is provided that overall controls both the cart detection devices arranged on the front side and the rear side of the sterilization apparatus, and when the sensor of the cart detection device on the front side detects the front part and the rear part of the cart in this order, the overall control unit determines that a cart has been stored and controls the first display unit of the cart detection device on the front side and the cart detection device on the rear side to be turned on, and when a sterilization process completion signal is received from the sterilization apparatus control unit after the first display unit is turned on, the overall control unit controls the second display unit of the cart detection device on the front side and the cart detection device on the rear side to be turned on, and when the sensor of the cart detection device on the rear side detects the front part and the rear part of the cart in this order, the overall control unit controls the first display unit and the second display unit of the cart detection device on the front side and the cart detection device on the rear side to be turned off. It is characterized by the following.

[0016] The device may also be characterized in that it includes a housing having the sensor and the display unit and forming a long columnar body in the vertical direction, the upper end surface of the housing is formed as an inclined surface, and the first display unit and the second display unit are provided on the inclined surface of the upper end surface of the columnar body. According to this configuration, by setting the inclined surface facing the direction in which the operator is working, visibility is good, and because the structure is simple, it can be attached to the outside of the sterilization apparatus without any sense of incongruity.

[0017] The sensor may detect a front identification portion provided at a front portion of the cart and a rear identification portion provided at a rear portion of the cart.

[0018] In addition, the front identification unit may be a QR code (registered trademark) indicating the front portion, the rear identification unit may be a QR code (registered trademark) indicating the rear portion, and the control unit may be configured to control the sensor to read the QR code (registered trademark). According to this configuration, the front and rear of the cart are detected using the QR code (registered trademark), which allows for more reliable detection than detection using other methods. Effect of the Invention

[0020] The cart detection device of the present invention can realize a function that notifies an operator of the status of the sterilization process after a cart containing objects to be sterilized is placed in the sterilization chamber, so that the cart is not removed from the sterilization chamber before the sterilization process is completed, using an existing sterilization device that has already been installed. 。 [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a perspective view of a cart detection device. [Diagram 2] FIG. 2 is a block diagram of a cart detection device. [Diagram 3] FIG. 1 is a perspective view showing the cart detection device attached to the front of the sterilization apparatus. [Figure 4] FIG. 3 is an explanatory diagram showing a part of the cart. [Diagram 5] 4 is a flowchart showing the operation of the cart detection device. [Figure 6] FIG. 13 is an explanatory diagram showing the placement of cart detection devices on the front and back of a double-door sterilization apparatus. [Figure 7] 13 is a flowchart showing the operation of the cart detection devices installed on the front and rear of a double-door sterilization apparatus. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] (First embodiment) The first embodiment is a form applied when installed in a sterilization apparatus (single door) that has one door on the front side for inserting and removing a cart into and from the sterilization tank. Figure 1 shows a perspective view of the overall configuration of the cart detection device. Figure 2 shows a block diagram of the control system of the cart detection device. Figure 3 shows the cart detection device placed in front of the sterilization device. Figure 4 shows the cart placed in front of the sterilization device. However, the cart in Figure 4 is partially omitted.

[0023] The cart detection device 30 is configured as a separate entity from the sterilization device 10, and its purpose is to prevent accidents such as a cart 20 being brought into an existing sterilization device 10 and then removed before the sterilization process is completed, resulting in the use of unsterilized objects to be sterilized.

[0024] The cart detection device 30 comprises a sensor 32 for detecting the cart 20 and a control unit 34 housed in a vertically extending, elongated columnar housing 31, and the control unit 34 is connected to a sterilization device control unit 50 of the sterilization device 10 so as to be able to communicate data with it. The control unit 34 is composed of a CPU, memory, etc., and operates based on an operating program previously stored in the memory.

[0025] The control unit 34 does not have to be provided inside the housing 31. For example, the control unit 34 may be provided inside the sterilization apparatus 10. In this case, the sensor 32, the first display unit 36 ​​and the second display unit 38 are provided in the housing 31, and wiring is connected so as to enable communication between the control unit 34 in the sterilization apparatus 10 and the sensor 32, the first display unit 36 ​​and the second display unit 38.

[0026] The upper end surface 33 of the housing 31 is formed as an inclined surface, and this inclined surface is provided with a first display unit 36 ​​that indicates that the cart 20 is in a first state in which it is stored in the sterilization apparatus 10, and a second display unit 38 that indicates that the cart 20 is in a second state in which it can be removed from the sterilization apparatus 10. In this way, by arranging the first display unit 36 ​​and the second display unit 38 on the inclined surface of the upper end portion 33 and positioning the cart detection device 30 so that this faces forward, the worker can have good visibility of the first display unit 36 ​​and the second display unit 38.

[0027] The first display section 36 is a display section formed in a semicircular arc shape of a predetermined width when viewed from the front, and emits light in a predetermined color from an LED or the like provided inside. The second display section 38 is also a display section formed in a semicircular arc shape of a predetermined width when viewed from the front, and emits light in a color different from that of the first display section due to an LED or the like provided inside.

[0028] In this embodiment, the first display unit 36 ​​is formed in a semicircular arc shape of a predetermined width that is convex to the right, and the second display unit 38 is formed in a semicircular arc shape of a predetermined width that is convex to the left and has the same radius as the first display unit 36, and the first display unit 36 ​​and the second display unit 38 are arranged adjacent to each other, thereby arranging the two display units in a circular shape. By designing the first display unit 36 ​​and the second display unit 38 as a single display unit in this way, the visibility of the worker can be further improved.

[0029] It should be noted that the first display portion 36 can be made to emit light in blue and the second display portion 38 can be made to emit light in green, but the emitted light colors are not limited to blue and green and may be other colors. It is also preferable that the color of the light emitted by the second display unit 38 is the same as the color of the process indicator light (not shown) provided on the sterilization apparatus 10 when the sterilization process is completed. This allows the operator to reliably recognize the completion of the sterilization process when he or she looks at the second display unit 38 on the cart detection device 30, as it is the same color as the process indicator light of the sterilization apparatus 10.

[0030] If the inclined side of the upper end surface 33 of the housing 31 is taken as the front, the sensor 32 is provided on the side surface. The sensor 32 detects the front part 20a of the cart 20 (the side facing the sterilization apparatus 10 when being carried into the sterilization apparatus 10) and the rear part 20b of the cart 20 (the side that first leaves the sterilization apparatus 10 when being carried out from the sterilization apparatus 10).

[0031] The sensor 32 detects the front portion 20a and the rear portion 20b of the cart 20, allowing the control unit 34 to determine the direction in which the cart 20 is moving. When the sensor 32 detects the rear part 20b of the cart 20 after detecting the front part 20a of the cart 20, the control unit 34 determines that the cart 20 has been carried into the sterilization apparatus 10. On the other hand, if the sensor 32 detects the front part 20a of the cart 20 after detecting the rear part 20b of the cart 20, the control unit 34 determines that the cart 20 has been removed from the sterilization apparatus 10.

[0032] As shown in FIGS. 3 and 4, the cart detection device 30 of this embodiment is preferably provided so as to be attachable to the front surface of the sterilization device 10. In other words, because the cart detection device 30 is attached to the front of the sterilization equipment 10, the position of the sensor 32 is located near the front of the sterilization equipment 10, and the cart 20 enters the sterilization equipment 10 immediately after detecting the front part 20a and the rear part 20b of the cart 20 in that order.Therefore, when the sensor 32 detects the front part 20a and the rear part 20b of the cart 20 in that order, it can be recognized that the cart 20 has already been transported into the sterilization equipment 10.

[0033] Next, the cart 20 will be described. The cart 20 has a rectangular shape when viewed in a plan view as a whole, with the lower frame bars 15 arranged at the positions corresponding to the long sides of the rectangle, and connecting portions 17 connecting the two lower frame bars 15 are provided at two locations, one at the front and one at the back. Two wheels 14 are provided on the bottom of each connecting portion 17, for a total of four wheels 14. The wheels 14 are configured to rotate freely, so that an operator can push the cart 20 to move it into the sterilization apparatus 10, and can also pull the cart 20 out of the sterilization apparatus 10.

[0034] A mesh bottom plate 16 is placed on the lower frame bar 15, and supports 18 extending upward from the lower frame bar 15 are located at the four corners. A plurality of mesh-like shelf plates 19 are arranged above the bottom plate 16 at predetermined intervals. The mesh-like bottom plate 16 and shelf plate 19 are configured to make it as easy as possible for the objects to be sterilized placed on the bottom plate 16 and shelf plate 19 to come into contact with the sterilizing agent. However, the bottom plate 16 and shelf plate 19 are not limited to being mesh-like, and may be made of punched metal or the like. The shelves 19 are removable, and the number of shelves can be changed appropriately according to the size of the items to be sterilized.

[0035] If the side of the cart 20 that is carried into the sterilization apparatus 10 first is referred to as the front section 20a, and the side that is carried into the sterilization apparatus 10 last is referred to as the rear section 20b, the front section 20a is provided with a front identification section 22 indicating that it is the front section, and the rear section 20b of the cart 20 is provided with a rear identification section 24 indicating that it is the rear section.

[0036] In this embodiment, the front indicator 22 and the rear indicator 24 are arranged so as to face outward on the side surfaces of the lower frame bars 15 or the side surfaces of the bottom plate 16 arranged on both the left and right sides. In this way, by providing the front identification portion 22 and the rear identification portion 24 on both the left and right sides, respectively, the sensor 32 can detect the front portion 20a and the rear portion 20b of the cart 20 regardless of whether the cart detection device 30 is placed on the left or right side of the cart 20.

[0037] In addition, the front identification portion 22 and the rear identification portion 24 are not limited to being provided at the lower portion of the cart 20, that is, the lower frame bar 15 or the bottom plate 16, but may be provided at a position higher than the lower frame bar 15 or the bottom plate 16. For example, the front identifier 22 and the rear identifier 24 may be provided on the side of any of the multiple shelves 19 arranged in the vertical direction. In this case, the position of the sensor 32 in the cart detection device 30 needs to be changed to position 35 or 37 in FIG.

[0038] In this embodiment, the front identification section 22 is configured with multiple QR codes (registered trademark) meaning the front, arranged along the direction of movement of the cart 20, and the rear identification section 24 is configured with multiple QR codes (registered trademark) meaning the rear, arranged along the direction of movement of the cart 20. In this embodiment, five QR codes (registered trademark) are provided on each of the front identification portion 22 and the rear identification portion 24, but the number of QR codes (registered trademark) is not limited to five.

[0039] Regarding reading the QR code (registered trademark), the QR code (registered trademark) acquired by the sensor 32 is recognized by a QR code (registered trademark) recognition program pre-installed in the control unit 34. The QR code (registered trademark) is created in advance by a known method as a QR code (registered trademark) meaning the front part and a QR code (registered trademark) meaning the rear part.

[0040] In this way, by using QR codes (registered trademark) as the front identification section 22 and the rear identification section 24 for detecting and identifying the front section 20a and the rear section 20b of the cart, it is possible to reliably detect the front section 20a and the rear section 20b of the cart 20. When a photoelectric sensor or the like is used, there is a possibility of erroneous recognition due to the influence of disturbance light, but the QR code (registered trademark) is hardly affected by disturbance light.

[0041] Furthermore, by providing multiple QR codes (registered trademark) on the front identification section 22 and the rear identification section 24 along the movement direction of the cart 20, at least one of the multiple QR codes (registered trademark) can be reliably recognized even when the movement speed of the cart 20 is too fast, thereby eliminating erroneous recognition. In addition, since multiple QR codes (registered trademark) are provided in the front identification section 22 and the rear identification section 24 so that at least one of the multiple QR codes (registered trademark) is reliably recognized, it is also possible to reduce logic errors such as front section-front section or rear section-rear section.

[0042] Next, the operation of the cart detection device 30 in this embodiment will be described with reference to FIG. The operator turns on the power switch of the sterilization apparatus 10 to start up the sterilization apparatus 10, and operates the operation unit 11 of the sterilization apparatus (a touch panel type display unit in this embodiment) to set the sterilization process to be performed (step S100). The power supply of the cart detection device 30 is set up so as to be turned on in conjunction with the power supply of the sterilization device 10.

[0043] The operator first stores the objects to be sterilized in the cart 20, opens the door of the sterilization apparatus 10, and moves the cart 20, which has now stored the objects to be sterilized, into the sterilization apparatus 10 (step S102). At this time, the sensor 32 of the cart detection device 30 recognizes the front identification portion 22 of the cart 20, and then recognizes the rear identification portion 24. As a result of the sensor 32 recognizing the front identification portion 22 and then the rear identification portion 24 in that order, the control unit 34 turns on the first display unit 36 ​​(step S104). The lighting of the first display unit 36 ​​allows the operator to confirm that the cart 20 is inside the sterilization apparatus 10. In this state, the second display unit 38 is not lit, so the operator can recognize that the cart 20 is inside the sterilization apparatus 10 but the sterilization process is not complete.

[0044] After carrying the cart 20 into the sterilization apparatus 10, the operator closes the door of the sterilization apparatus 10 and starts the sterilization process (step S106). When the sterilization process is completed, the sterilization device control unit 50 of the sterilization device 10 outputs a control signal to the effect that the sterilization process is completed to the control unit 34 of the cart detection device 30. When the control unit 34 receives the control signal to the effect that the sterilization process is completed, it turns on the second display unit 38 (step S108). When second display section 38 lights up, the operator can recognize that the sterilization process has been completed.

[0045] After the operator recognizes that the sterilization process is completed, he or she opens the door of the sterilization apparatus 10 and pulls out the cart 20 (step S110). At this time, the sensor 32 of the cart detection device 30 recognizes the rear identification portion 24 of the cart 20, and then recognizes the front identification portion 22. As the sensor 32 recognizes the rear identification portion 24 and the front identification portion 22 in that order, the control unit 34 turns off the first display unit 36 ​​and the second display unit 38 (step S112). In this way, the operator can confirm that the cart 20 is stored inside the sterilization device 10 by the first display unit 36 ​​being lit, and the operator can confirm that the sterilization process has been completed by the second display unit 38 being lit.

[0046] Second embodiment Next, we will explain an embodiment in which doors for loading and unloading a cart into and from the sterilization tank are provided on both the front and rear sides of the sterilization apparatus, where the cart is loaded into the sterilization tank through the front door and removed through the rear door.

[0047] Figure 6 shows a schematic diagram of the cart detection system installed for a double door sterilizer. The double-door sterilization apparatus 52 has doors 54, 56 on both the front and rear sides. The cart detection device 30a is disposed on the front side of the sterilization apparatus 52, and the cart detection device 30b is disposed on the rear side. The cart detector 30a arranged on the front side and the cart detector 30b arranged on the rear side both have the same configuration, and are identical to the cart detector 30 described in the first embodiment.

[0048] An overall control unit 58 is provided to control both of the two cart detection devices 30a, 30b. The overall control unit 58 does not have to be provided in the cart detection devices 30a, 30b, and can be provided in the sterilization device 10, for example. Since the general control unit 58 has a function of controlling both of the two cart detection devices 30a, 30b, it is not necessary to provide a control unit 34 that individually controls each of the cart detection devices 30a, 30b.

[0049] Next, the operation of the two cart detection devices 30a and 30b in the second embodiment will be described with reference to FIG. The operator turns on the power switch of the sterilization apparatus 52 to start up the sterilization apparatus 52, and operates the operation unit of the sterilization apparatus (not shown in this embodiment) to set the sterilization process to be performed (step S200). The power supplies of the two cart detection devices 30a, 30b are set up so as to be turned on in conjunction with the power supply of the sterilization device 52.

[0050] The operator first stores the objects to be sterilized in the cart 20, opens the door of the sterilization device 52, and moves the cart 20, which has now stored the objects to be sterilized, into the sterilization device 52 (step S202). At this time, the sensor 32 of the cart detection device 30a recognizes the front identifier 22 of the cart 20, and then recognizes the rear identifier 24. As a result of the sensor 32 recognizing the front identification unit 22 and the rear identification unit 24 in that order, the central control unit 58 turns on the first display unit 36 ​​of the cart detection device 30a on the front side and the first display unit 36 ​​of the cart detection device 30b on the rear side (step S204). The illumination of the first display unit 36 ​​enables the operator to confirm that the cart 20 is inside the sterilization device 52. In this state, the second display unit 38 is not illuminated, so the operator can recognize that the cart 20 is inside the sterilization device 52 but the sterilization process has not been completed.

[0051] After carrying the cart 20 into the sterilization device 52, the operator closes the front door 54 of the sterilization device 52 to start the sterilization process (step S206). When the sterilization process is completed, the sterilization device control unit 50 of the sterilization device 52 outputs a control signal to the general control unit 58 to inform the user that the sterilization process is completed. When the general control unit 58 receives the control signal to the effect that the sterilization process is completed, it lights up the second display unit 38 of the front cart detection device 30a and the second display unit 38 of the rear cart detection device 30b (step S208). When second display section 38 lights up, the operator can recognize that the sterilization process has been completed.

[0052] After the operator recognizes that the sterilization process is completed, he or she opens the door 56 on the rear side of the sterilization device 52 and pulls out the cart 20 (step S210). At this time, the sensor 32 of the cart detection device 30b on the rear side recognizes the front identifier 22 of the cart 20, and then recognizes the rear identifier 24. As the sensor 32 of the rear-side cart detection device 30b recognizes the front identification unit 22 and the rear identification unit 24 in that order, the central control unit 58 turns off the first display unit 36 ​​and the second display unit 38 of the front-side cart detection device 30a and the rear-side cart detection device 30b (step S212). In this way, even in the case of a sterilization device 52 with two doors, the operator can confirm that the cart 20 is stored inside the sterilization device 52 by the first display unit 36 ​​being lit, and the operator can confirm that the sterilization process has been completed by the second display unit 38 being lit.

[0053] In each of the above-described embodiments, the sterilization device may be a steam sterilization device or an ethylene oxide gas sterilization device, so long as the objects to be sterilized are stored in a cart and the sterilization process is carried out thereon. [Explanation of symbols]

[0054] 10 Sterilizer 11 Control section 14 wheels 15 Bottom frame rod 16 Bottom plate 17 Connecting part 18 Posts 19 Shelf 20 Cart 20a Front section 20b Rear section 22 Front Identification Unit 24 Rear Identification Unit 30 Cart detection device 31 Case 32 Sensors 33 Upper end surface 34 Control section 36 1st display section 38 2nd display section 50 Sterilization device control section 52 Sterilizer 54 Door 56 Door 58 General Control Unit

Claims

1. A cart detection device that is provided separately from a sterilization device into which a cart is carried and detects the direction of movement of a cart capable of storing objects to be sterilized relative to the sterilization device, When the device is installed in a sterilization apparatus where the cart is loaded and unloaded through a door provided only on the front side of the sterilization tank in which the cart is stored, a sensor for detecting the front and rear of the cart; A control unit capable of data communication with a sterilization device control unit that executes operation control of the sterilization device; a first display unit that displays that the cart is stored in the sterilization apparatus by detecting the direction of movement of the cart relative to the sterilization apparatus using the sensor; and a second display unit that displays that the sterilization process in the sterilization device has been completed. The control unit is When the sensor detects the front part and the rear part of the cart in that order, it is determined that the cart has been stored and the first display part is turned on. After the first display unit is turned on, when a sterilization process completion signal is received from the sterilization device control unit, the second display unit is turned on, A cart detection device characterized in that, when the sensor detects the rear part and the front part of the cart in that order, the display of the first display unit and the second display unit are turned off.

2. A cart detection device that is provided separately from a sterilization device into which a cart is carried and detects the direction of movement of a cart capable of storing objects to be sterilized relative to the sterilization device, In the case where the sterilization tank in which the cart is stored has doors on both the front and back, and the cart is stored from the front and removed from the back, a sensor for detecting the front and rear of the cart; a first display unit that displays that the cart is stored in the sterilization apparatus by detecting the direction of movement of the cart relative to the sterilization apparatus using the sensor; and a second display unit that displays that the sterilization process in the sterilization device has been completed. a central control unit capable of data communication with a sterilization apparatus control unit that executes operation control of the sterilization apparatus and centrally controls both of the cart detection devices disposed on the front side and the back side of the sterilization apparatus; The general control unit includes: when the sensor of the front cart detection device detects the front part and the rear part of the cart in that order, it is determined that the cart has been stored and the first display units of the front cart detection device and the rear cart detection device are controlled to light up; After the first display unit is turned on, when a sterilization process completion signal is received from the sterilization device control unit, the second display units of the front cart detection device and the rear cart detection device are controlled to be turned on, A cart detection device characterized by controlling the first display unit and the second display unit of the cart detection device on the front side and the rear side to be turned off when the sensor of the cart detection device on the rear side detects the front and rear parts of the cart in that order.

3. a housing having the sensor and the display unit and forming a columnar body elongated in a vertical direction; The upper end surface of the housing is formed as an inclined surface, 3. The cart detection device according to claim 1, wherein the first display portion and the second display portion are provided on an inclined surface of an upper end surface of the columnar body.

4. The sensor includes:

4. The cart detection device according to claim 1, further comprising a front identification portion provided at a front portion of the cart and a rear identification portion provided at a rear portion of the cart.

5. The front identification part is a QR code (registered trademark) that indicates a front part, The rear identification portion is a QR code (registered trademark) that indicates the rear portion, The cart detection device according to claim 4 , wherein the control unit controls the sensor to read a QR code (registered trademark).

Images