JP6998160B2 - A diagnostic method for a photoelectric sensor and a control method for a three-dimensional parking device using the same, and a diagnostic system for the photoelectric sensor and a control device for the three-dimensional parking device using the diagnostic system. - Google Patents

Description

The present invention utilizes a diagnostic method of a photoelectric sensor installed in a three-dimensional parking device, a control method of a three-dimensional parking device using this diagnostic method, a diagnostic system of a photoelectric sensor installed in the three-dimensional parking device, and this diagnostic system. It is related to the control device of the three-dimensional parking device.

For example, a three-dimensional parking device including a plurality of movable pallets for storing a vehicle generally includes a plurality of photoelectric sensors for detecting an object for the purpose of ensuring more complete safety (see Patent Document 1). Each photoelectric sensor includes a light emitting unit and a light receiving unit, and detects an object by detecting that the light emitted from the light emitting unit to the light receiving unit is blocked by the object.

Japanese Unexamined Patent Publication No. 2016-94707

However, the photoelectric sensor as described above may, for example, emit light emitted from a light projecting unit of another photoelectric sensor provided in another three-dimensional parking device adjacent to the three-dimensional parking device provided with the photoelectric sensor. The following adverse effects may occur due to the fact that the light receiving portion of the photoelectric sensor receives the light. That is, even though the light emitted from the light projecting section of the photoelectric sensor is blocked by an object, the light receiving section of the photoelectric sensor receives the light emitted from the light projecting section of another photoelectric sensor. , There is a risk that the photoelectric sensor cannot detect an object. Since such an adverse effect is not caused by the failure of the photoelectric sensor, it is difficult to detect it by the normal failure diagnosis flow of the photoelectric sensor.
The present invention has been made in view of the above problems, and an object of the present invention is to further improve the detection accuracy of the photoelectric sensor.

(Aspect of the invention)
The following aspects of the invention exemplify the configurations of the present invention and are described separately in order to facilitate understanding of the various configurations of the present invention. Each section does not limit the technical scope of the present invention. Therefore, while taking into consideration the best mode for carrying out the invention, the technical elements of the present invention may be obtained by substituting, deleting, or adding other components to some of the components of each item. It can be included in the range.

(1) A diagnostic method for a photoelectric sensor provided with a light emitting unit and a light receiving unit installed in a three-dimensional parking device for object detection, in which light is emitted from the light emitting unit in a predetermined blinking pattern to receive the light. A method for diagnosing a photoelectric sensor, which compares a blinking pattern of light received by a unit with the predetermined blinking pattern, and determines an abnormality of the photoelectric sensor based on the comparison result.

The method for diagnosing a photoelectric sensor described in this section includes a blinking pattern of light received by a light receiving portion of a photoelectric sensor to be diagnosed by emitting light in a predetermined blinking pattern from a light emitting portion of the photoelectric sensor to be diagnosed. The abnormality of the photoelectric sensor is determined based on the comparison result with a predetermined blinking pattern of the light emitted from the light projecting unit. Here, the predetermined blinking pattern is a blinking pattern different from the emission pattern of light emitted from the light projecting unit of the photoelectric sensor during the object detection operation (light is constantly emitted). Then, when light is emitted from the light projecting unit in such a predetermined blinking pattern, the light receiving unit paired with the light emitting unit usually receives light in a blinking pattern that matches the predetermined blinking pattern. Become. Therefore, when the blinking pattern of the light received by the light receiving unit matches the predetermined blinking pattern, it is determined that there is no abnormality in the photoelectric sensor to be diagnosed.

On the other hand, as a result of comparing the blinking pattern of the light received by the light receiving unit with the predetermined blinking pattern, if both blinking patterns do not match, the light receiving unit is different from the light emitted from the light emitting unit. Since it is possible that the light is detected, it is determined that there is an abnormality in the photoelectric sensor. For example, if the light receiving part of the photoelectric sensor to be diagnosed receives the light emitted from the light emitting part of the photoelectric sensor during the object detection operation, which is different from the photoelectric sensor to be diagnosed, the received light of the light is received. The blinking pattern is considered to be a pattern in which light is constantly emitted. As described above, such a blinking pattern is different from the predetermined blinking pattern and does not match the predetermined blinking pattern. Therefore, it is determined that the photoelectric sensor has an abnormality.
Therefore, the method for diagnosing a photoelectric sensor described in this section is a case where the light receiving portion of the photoelectric sensor to be diagnosed detects light other than the light emitted from the light emitting portion paired with the light receiving portion. However, it is determined that there is an abnormality in the photoelectric sensor. Therefore, the detection omission of the photoelectric sensor due to the light receiving unit receiving light different from the light emitted from the light projecting unit is avoided, and the detection accuracy of the photoelectric sensor is further improved.

(2) In the above item (1), the predetermined blinking pattern has a time zone in which light is emitted and a time zone in which light is not emitted at least once during a predetermined time forming the predetermined blinking pattern. Including, as a result of the comparison, when the total time of the time zone in which the light is emitted during the predetermined time is increased in the blinking pattern of the light received by the light receiving portion than in the predetermined blinking pattern. It is determined that the light receiving unit detects light different from the light emitted from the light projecting unit, and the total time of the time zone in which the light is not emitted during the predetermined time is calculated from the predetermined blinking pattern. A method for diagnosing a photoelectric sensor for determining that there is a failure or an obstacle of the photoelectric sensor when the number increases in the blinking pattern of the light received by the light receiving portion.

In the diagnostic method of the photoelectric sensor described in this section, the light is emitted during a predetermined time during which the predetermined blinking pattern of the light emitted from the light projecting unit forms the predetermined blinking pattern (hereinafter, "light is emitted". It also includes a time zone (also referred to as "ON") and a time zone in which light is not emitted (hereinafter, also referred to as "light is OFF") at least once, and the number and length of each time zone (also referred to as "ON"). Time) is arbitrary. Then, as a result of comparing the predetermined blinking pattern with the blinking pattern of the light received by the light receiving unit, the light receiving unit contains the light included in the predetermined blinking pattern during the predetermined time, rather than the total time of the time zone in which the light is ON. When the total time of the light ON time zone included in the predetermined time of the blinking pattern of the received light is longer, the light receiving part emits light different from the light emitted from the light emitting part. Judge that it is detected. That is, in this case, even though the timing corresponds to the time zone when the light is OFF, which is included in the predetermined blinking pattern, the light receiving unit receives some light and the total time when the light is ON. Since it is considered that the number is increasing, the judgment is made as described above.

On the other hand, the time when the light is turned off, which is included in the predetermined time of the blinking pattern of the light received by the light receiving unit, rather than the total time of the time zone when the light is turned off, which is included in the predetermined time of the predetermined blinking pattern. If the total time of the band is longer, it is determined that the photoelectric sensor is out of order or there is an obstacle. That is, in this case, the light is not detected in the light receiving unit even though the timing corresponds to the time zone when the light is ON, which is included in the predetermined blinking pattern, and the total time when the light is OFF is increasing. Therefore, it is determined that there is a failure of the light projecting section and / or a failure of the light receiving section, or some obstacle that blocks the light from the light projecting section. As described above, the method for diagnosing the photoelectric sensor described in this section is not only for determining the abnormality of the photoelectric sensor, but also for efficiently proceeding with the restoration work of the photoelectric sensor, which is to be performed after that, by isolating the cause of the abnormality to some extent. Is. The total time of the above-mentioned time zone in which the light is ON or OFF means that when the blinking pattern includes the time zone in which the light is ON or OFF twice or more, the time zone in which the light is ON or OFF is included. Shows the total time of lengths (hours).

(3) In the above items (1) and (2), the three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power of the operation panel is turned on and off by the user. A method for diagnosing a photoelectric sensor, which is executed within a predetermined time after the power of the operation panel is turned on by the user and before the operation of the multi-level parking device is performed (claim 1 ). ..
The method for diagnosing the photoelectric sensor described in this section targets a three-dimensional parking device equipped with an operation panel, and the operation panel is input with various operations of the three-dimensional parking device by the user, and the power supply thereof is also turned on by the user. And to be cut off. That is, when the three-dimensional parking device is used, the power of the operation panel is first turned on by the user, the three-dimensional parking device is operated according to the operation input to the operation panel, and then the power of the operation panel is turned off by the user. Will be done. The method for diagnosing the photoelectric sensor described in this section is such that the diagnosis as described in (1) and (2) above is performed within a predetermined time after the power of the operation panel is turned on by the user, and the user. It is executed at the timing before the operation of the three-dimensional parking device is performed. This timing is the timing before the user starts using the three-dimensional parking device, such as calling the pallet of the three-dimensional parking device or opening / closing the gate, every time the user starts using the three-dimensional parking device. By executing the diagnosis at such a timing, every time the three-dimensional parking device is used, an abnormality of the photoelectric sensor is detected before the pallet, the opening / closing gate, etc. of the three-dimensional parking device are operated. The safety of the three-dimensional parking device is further enhanced.

(4) In the above items (1) and (2), the three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power of the operation panel is turned on and off by the user. A method for diagnosing a photoelectric sensor (claim 2 ), which is executed at a predetermined timing while the power of the operation panel is being turned off.
The method for diagnosing a photoelectric sensor described in this section is intended to diagnose a three-dimensional parking device provided with an operation panel, similar to the method for diagnosing a photoelectric sensor in the above item (3). Then, the diagnosis as described in the above items (1) and (2) is executed at a predetermined timing when the power of the operation panel is turned off, that is, the three-dimensional parking device is not used. The predetermined timing for executing the diagnosis is arbitrary, such as the timing at a predetermined time every day or the timing immediately after the power of the operation panel is turned off by the user, if the three-dimensional parking device is not used. Timing is fine. As a result, the abnormality of the photoelectric sensor can be detected without affecting the control and operation when the three-dimensional parking device is used.

(5) In the above (1) to (4), the three-dimensional parking device has an opening / closing gate on the front surface, and is installed as the photoelectric sensor on the front side of the opening / closing gate. A photoelectric sensor that includes an intrusion detection sensor that detects intrusion and an overcoming detection sensor that detects overcoming of the opening / closing gate, and at least the intrusion detection sensor and the overcoming detection sensor are diagnostic targets. Diagnostic method (claims 3 and 4).

In the method for diagnosing a photoelectric sensor described in this section, a three-dimensional parking device provided with a photoelectric sensor is provided with an opening / closing gate on the front surface, and includes an intrusion detection sensor and a boarding over detection sensor as photoelectric sensors, and at least these intrusion detections. The sensor for diagnosis and the sensor for overcoming detection are the targets of diagnosis. The intrusion detection sensor is installed below the front side of the open / close gate to detect the intrusion of people into the three-dimensional parking device, and the overcoming detection sensor opens / closes to detect the intrusion of the open / close gate. It is installed on the front side and above the gate. That is, both of these two photoelectric sensors detect an object on the front side of the three-dimensional parking device, which is generally an entry port when a person or the like enters the three-dimensional parking device. By targeting these two photoelectric sensors for diagnosis, it is possible to avoid omission of detection of the photoelectric sensor related to intrusion from the front side of the three-dimensional parking device, and to ensure more complete safety in the three-dimensional parking device. Is.

(6) When an abnormality of the photoelectric sensor is detected by the diagnostic method of the photoelectric sensor according to any one of the above items (1) to (5), the photoelectric sensor is abnormal on the display unit provided in the three-dimensional parking device. A method for controlling a three-dimensional parking device (claim 5), which displays that the above is true and suppresses the operation of at least a part of the three-dimensional parking device.
The control method of the three-dimensional parking device described in this section utilizes the diagnostic method of the photoelectric sensor according to any one of (1) to (5) above, and the abnormality of the photoelectric sensor is detected by those diagnostic methods. When it is detected, the display unit of the three-dimensional parking device indicates that the photoelectric sensor is abnormal, and at least a part of the operation of the three-dimensional parking device is suppressed.

When a plurality of photoelectric sensors included in the three-dimensional parking device are to be diagnosed, the indication that the photoelectric sensor is abnormal may be displayed by identifying the abnormal photoelectric sensor in the three-dimensional parking device. If a part of the cause of the abnormality is known as described in the above item (2), it may be displayed together with the cause. Further, the operation of the three-dimensional parking device that suppresses when an abnormality of the photoelectric sensor is detected is, for example, a pallet calling operation, an opening / closing operation of an opening / closing gate, or the like. The operation input by the user may not be accepted. As a result, the abnormality of the photoelectric sensor is recognized by the user and the like, and the use of the three-dimensional parking device is restricted when the abnormality of the photoelectric sensor is detected, so that the safety of the three-dimensional parking device is maintained. It is a thing.

(7) A diagnostic system for a photoelectric sensor provided with a light emitting unit and a light receiving unit installed in a three-dimensional parking device for object detection, in which light is emitted from the light emitting unit in a predetermined blinking pattern and described above. Diagnosis to acquire the blinking pattern of the light received by the light receiving unit, compare the predetermined blinking pattern with the blinking pattern of the light acquired from the light receiving unit, and determine the abnormality of the photoelectric sensor based on the comparison result. A diagnostic system for photoelectric sensors including a control unit.
(8) In the above item (7), the predetermined blinking pattern has a time zone in which light is emitted and a time zone in which light is not emitted at least once during a predetermined time forming the predetermined blinking pattern. As a result of the comparison, the diagnostic control unit includes, as a result of the comparison, the total time of the time zone in which the light is emitted during the predetermined time is the blinking pattern of the light received by the light receiving unit rather than the predetermined blinking pattern. If it increases in, it is determined that the light receiving unit has detected light different from the light emitted from the light projecting unit, and the total time of the time zone in which the light is not emitted during the predetermined time is determined. A diagnostic system for a photoelectric sensor that determines that there is a failure or obstacle of the photoelectric sensor when the number of blinking patterns of light received by the light receiving portion is larger than that of the predetermined blinking pattern.

(9) In the above paragraphs (7) and (8), the three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power of the operation panel is turned on and off by the user. The diagnostic control unit is a photoelectric sensor that makes a diagnosis within a predetermined time after the power of the operation panel is turned on by the user and at a timing before the operation of the multi-level parking device is performed. Diagnostic system (claim 6 ).
(10) In the above items (7) and (8), the three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power of the operation panel is turned on and off by the user. The diagnostic control unit is a diagnostic system for a photoelectric sensor (claim 7 ) that performs diagnosis at a predetermined timing while the power of the operation panel is off.
(11) In the above (7) to (10), the three-dimensional parking device has an opening / closing gate on the front surface, and is installed as the photoelectric sensor on the front side of the opening / closing gate. It includes an intrusion detection sensor for detecting intrusion and an overcoming detection sensor for detecting overcoming of the opening / closing gate, and the diagnostic control unit diagnoses at least the intrusion detection sensor and the overcoming detection sensor. A diagnostic system for a photoelectric sensor of interest (claims 8 and 9).

(12) When a diagnostic result is obtained from the diagnostic system of the photoelectric sensor according to any one of the above items (7) to (11) and the diagnosis result indicates that an abnormality of the photoelectric sensor is detected, the solid. A control device for a three-dimensional parking device (claim 10) that displays on a display unit included in the parking device that the photoelectric sensor is abnormal and suppresses the operation of at least a part of the three-dimensional parking device.
Then, the diagnostic system of the photoelectric sensor according to the items (7) to (11) is used for the diagnostic method of the photoelectric sensor according to the above items (1) to (5), respectively, and the above items (1) to (5) are used. The control device for the three-dimensional parking device according to (12) is used for the control method for the three-dimensional parking device according to the above (6). It has the same effect as the control method of the three-dimensional parking device according to the item (6).

Since the present invention is configured in this way, it is possible to further improve the detection accuracy of the photoelectric sensor.

It is a block diagram which shows an example of the structure of the three-dimensional parking device including the diagnostic system of the photoelectric sensor which concerns on embodiment of this invention, and the control device of a three-dimensional parking device. It is a perspective view of the three-dimensional parking device provided with the diagnostic system of the photoelectric sensor of FIG. 1 and the control device of the three-dimensional parking device. It is a flowchart which shows an example of the diagnosis method of the photoelectric sensor and the control method of a three-dimensional parking device which concerns on embodiment of this invention. It is a time chart which illustrates the blinking pattern of the light emitted from the light emitting part of the photoelectric sensor, and the blinking pattern of the light received by the light receiving part at the time of diagnosis by the diagnostic method of the photoelectric sensor which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the same part or the corresponding part is indicated by the same reference numeral throughout the drawing. Further, detailed description will be omitted for the parts that are the same as or equivalent to those of the prior art.
FIG. 1 shows an example of the configuration of a three-dimensional parking device 30 including a photoelectric sensor diagnostic system 10 according to an embodiment of the present invention and a three-dimensional parking device control device 40 using the photoelectric sensor diagnostic system 10. Shows. Further, FIG. 2 shows an example of the structure of the three-dimensional parking device 30 shown in FIG.

First, the three-dimensional parking device 30 will be schematically described with reference to FIGS. 1 and 2. The three-dimensional parking device 30 is a substantially rectangular structure composed of a plurality of columns 42a to 42h and a plurality of beams 44. In addition, the structure is such that a plurality of movable pallets 32 are movably supported. In the example of FIG. 2, the three-dimensional parking device 30 has a structure of four stages above ground and three rows (four stages in the vertical direction and three rows in the horizontal direction in FIG. 2), and nine units are used as a plurality of movable pallets 32. It is provided with movable pallets 32a to 32i. Further, the three-dimensional parking device 30 includes an opening / closing gate 34 (34a to 34c), an operation panel 36, a control device 40, and a drive unit 50. Note that FIG. 2 omits the illustration of the control device 40 and the drive unit 50.

Of the plurality of movable pallets 32a to 32i, 32b and 32c only move laterally at the height position where the vehicle is loaded and unloaded, and 32d to 32g are vehicles according to a calling operation by the user of the three-dimensional parking device 30. Can be moved in the height direction and the parallel direction to a position where the pallets can be loaded and unloaded (in FIG. 2, the positions where the movable pallets 32a to 32c are located). On the other hand, the movable pallets 32a, 32h, and 32i only move up and down. Further, each of the opening / closing gates 34a to 34c is opened after the desired movable pallet 32 is called at the warehousing / delivery position on the rear surface side, and is closed by the user's operation after the warehousing / delivery of the vehicle is completed. Is. In the example of FIG. 2, the opening / closing gates 34a to 34c are guided and supported between the support rails 46a to 46d so as to be movable in the vertical direction.

The operation panel 36 is used for input for performing each operation of the three-dimensional parking device 30, and for example, an opening / closing operation of the opening / closing gate 34, a calling operation of the movable pallet 32, and the like are input by a touch panel method. Further, the operation panel 36 includes a display unit 38 for displaying various information. Further, the operation panel 36 is turned on and off by, for example, a key owned by the user. The control device 40 is responsible for controlling the entire three-dimensional parking device 30, and for example, the movable pallet 32 is moved or the opening / closing gate 34 is moved via the drive unit 50 in response to an operation input to the operation panel 36. It is intended to open and close. The drive unit 50 generates and transmits power for moving the movable pallet 32 and opening / closing the opening / closing gate 34 in response to control by the control device 40.

Further, the three-dimensional parking device 30 includes a plurality of photoelectric sensors 12 as shown in FIG. The plurality of photoelectric sensors 12 detect an object around each movable pallet 32 at a height at which the vehicle enters and exits, and in this embodiment, eight photoelectric sensors 12A to 12H are included. In FIG. 2, a plurality of sets of a light emitting unit 14 and a light receiving unit 16 each constituting a photoelectric sensor 12 are formed around three movable pallets 32a to 32c at a height at which a vehicle is loaded and unloaded. It is shown in the figure. That is, as shown in FIG. 2, as the photoelectric sensor 12 for detecting the front side (right front side in the figure) of the open / close gate 34, the support rails 46a and 46d are covered with the light projecting unit 14a constituting the intrusion detection sensor 12A and the light receiving light. A unit 16a, a light projecting unit 14b and a light receiving unit 16b constituting the overpass detection sensor 12B are installed. Further, as the photoelectric sensor 12 for detecting the rear surface side (left back side in the drawing) of the open / close gate 34, the light projecting unit 14c and the light receiving unit 16c constituting the gate rear surface sensor 12C are installed on the columns 42a and 42d.

Further, as the photoelectric sensor 12 for detecting the rear side (left back side in the figure) of the three movable pallets 32a to 32c, the light projecting unit 14d and the light receiving unit 16d constituting the rear sensor 12D are attached to the columns 42e and 42h. is set up. Further, as photoelectric sensors 12 for detecting each side of the movable pallets 32a to 32c, side sensors 12E to 12H are installed on the columns 42a to 42h. More specifically, the light projecting unit 14e and the light receiving unit 16e of the side sensor 12E are on the columns 42e and 42a, and the light projecting unit 14f and the light receiving unit 16f of the side sensor 12F are on the columns 42f and 42b. The light emitting unit 14g and the light receiving unit 16g of the side sensor 12G are installed, and the light emitting unit 14h and the light receiving unit 16h of the side sensor 12H are installed on the columns 42h and 42d, respectively. In addition, in FIG. 2, the detection range by each photoelectric sensor 12 is shown by a broken line.

Next, the photoelectric sensor diagnostic system 10 according to the embodiment of the present invention will be described. As shown in FIG. 1, the photoelectric sensor diagnostic system 10 includes a diagnostic control unit 18, and in this embodiment, three-dimensional parking is performed. It is incorporated in the control device 40 of the device 30. Although the details will be described later, the diagnostic control unit 18 diagnoses the photoelectric sensor 12 to be diagnosed and determines the abnormality of the photoelectric sensor 12. Further, the control device 40 of the three-dimensional parking device 30 acquires the diagnosis result of the photoelectric sensor 12 from the diagnosis control unit 18 of the diagnosis system 10 of the photoelectric sensor in addition to the control of the three-dimensional parking device 30 as described above, and this diagnosis. Depending on the result, the operation of a part of the three-dimensional parking device 30 is suppressed.

Next, along the flow of the flow chart shown in FIG. 3, the photoelectric according to the embodiment of the present invention using the diagnostic system 10 of the photoelectric sensor and the control device 40 of the three-dimensional parking device shown in FIGS. 1 and 2. The method of diagnosing the sensor and the method of controlling the multi-level parking device will be described. In FIG. 3, the processes of S20 to S70 correspond to the diagnostic method of the photoelectric sensor according to the embodiment of the present invention, and the processes of S80 to S100 correspond to the control method of the three-dimensional parking device according to the embodiment of the present invention. Applicable. For the configuration of the three-dimensional parking device 30 including the diagnostic system 10 of the photoelectric sensor and the control device 40 of the three-dimensional parking device, refer to FIGS. 1 and 2 as appropriate.
S10 (power on): The power of the three-dimensional parking device 30 including the diagnostic system 10 of the photoelectric sensor and the control device 40 of the three-dimensional parking device is turned on by the user of the three-dimensional parking device 30 by operating the operation panel 36. The power source of the three-dimensional parking device 30 here means the power source of the operation panel 36.

S20 (diagnosis start): Of the plurality of photoelectric sensors 12 included in the three-dimensional parking device 30, the photoelectric sensor diagnosis system 10 starts the diagnosis of the photoelectric sensor 12 to be diagnosed. In this embodiment, two photoelectric sensors 12 provided on the front side of the opening / closing gate 34 of the three-dimensional parking device 30, that is, an intrusion detection sensor 12A including a light emitting unit 14a and a light receiving unit 16a, a light emitting unit 14b, and the light emitting unit 14b. The overpass detection sensor 12B provided with the light receiving unit 16b is the diagnosis target. First, the description will proceed by taking the case of diagnosing the intrusion detection sensor 12A as an example. During the diagnosis of the photoelectric sensor 12, the other photoelectric sensors 12 (passage detection sensor 12B, gate rear sensor 12C, rear sensor 12D, side sensor 12E) other than the photoelectric sensor 12 (intrusion detection sensor 12A) being diagnosed are excluded. In (12H), it is preferable that the object detection operation is in progress, or at least light is constantly emitted from the light projecting unit 14.

S30 (light emission): Light is emitted from the light projecting unit 14 of the photoelectric sensor 12 to be diagnosed (light emitting unit 14a of the intrusion detection sensor 12A) in a predetermined blinking pattern by the diagnostic control unit 18 of the diagnostic system 10 of the photoelectric sensor. Is emitted. In this embodiment, light is emitted in a blinking pattern as shown in the time chart of FIG. 4 (a). Here, the time chart in FIG. 4 is a time series that progresses from the left side to the right side in the figure, and the time zone indicated by "ON" in the figure indicates the time zone in which light is emitted. The time zone indicated by "OFF" in the inside indicates a time zone in which light is not emitted. That is, in the blinking pattern of the light shown in FIG. 4A, the time zone in which the light is ON and the time zone in which the light is OFF continue alternately during the predetermined time T1, and the time zone in which the light is ON is three times in total. The time zone when the light is off is included twice in total. The length of each time zone is almost equal.

The predetermined blinking pattern of light used in the diagnostic method of the photoelectric sensor according to the embodiment of the present invention is not limited to the above embodiment, and the number of times the light is on or off. , The length of each time zone, the length of the predetermined time T1 forming a predetermined blinking pattern, and the like can be arbitrarily set. For example, the predetermined blinking pattern may include a time zone in which the light is ON and a time zone in which the light is OFF once, and in the extreme, the time zone in which the light is OFF continues and the predetermined time T1 elapses. It may be such that the light is turned on just before the time. However, the blinking pattern of the light emitted from the light projecting unit 14 of the photoelectric sensor 12 during the detection operation, that is, the blinking pattern in which the light is always ON (see FIG. 4C) is avoided.

S40 (Comparison of blinking patterns): The blinking pattern of the light emitted from the light projecting unit 14 of the photoelectric sensor 12 to be diagnosed in S30 above, and the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed at substantially the same timing as this emission timing. The blinking pattern of the light received in the above is compared by the diagnostic control unit 18. That is, in this embodiment, the blinking pattern of the light shown in FIG. 4A is compared with the blinking pattern of the light detected by the light receiving unit 16a of the intrusion detection sensor 12A. Then, when the blinking pattern of the light detected by the light receiving unit 16a of the intrusion detection sensor 12A is the same as the blinking pattern shown in FIG. 4A, that is, the light is emitted from the light emitting unit 14a of the intrusion detection sensor 12A. When the blinking pattern of the light and the blinking pattern of the light received by the light receiving unit 16a match (YES), the process proceeds to S50. On the other hand, when the blinking pattern of the light detected by the light receiving unit 16a of the intrusion detection sensor 12A is different from the blinking pattern shown in FIG. 4A, that is, the light is emitted from the light emitting unit 14a of the intrusion detection sensor 12A. When the blinking pattern of the light and the blinking pattern of the light received by the light receiving unit 16a do not match (NO), the process proceeds to S60.

S50 (photoelectric sensor normality determination): As a result of the comparison in S40, the blinking pattern of the light emitted from the light projecting unit 14 of the photoelectric sensor 12 to be diagnosed and the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed received. When the blinking pattern of the light matches, the diagnostic control unit 18 determines that the photoelectric sensor 12 (intrusion detection sensor 12A) to be diagnosed is normal.
S60 (photoelectric sensor abnormality determination): As a result of the comparison in S40, the blinking pattern of the light emitted from the light projecting unit 14 of the photoelectric sensor 12 to be diagnosed and the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed received. If the blinking pattern of light does not match, the diagnostic control unit 18 determines that the photoelectric sensor 12 (intrusion detection sensor 12A) to be diagnosed has an abnormality.

At this time, the blinking pattern of the light received by the light receiving unit 16a of the intrusion detection sensor 12A is emitted from the light emitting unit 16a, for example, as in the blinking patterns shown in FIGS. 4 (b) and 4 (c). When the time zone in which the light is ON is longer than the blinking pattern of the light shown in (a), the light receiving unit 16a of the intrusion detection sensor 12A is emitted from the light emitting unit 14 of another photoelectric sensor 12. It is assumed that light other than the light emitted from the light projecting unit 14a of the intrusion detection sensor 12A, such as light, is received. On the other hand, the blinking pattern of the light received by the light receiving unit 16a of the intrusion detection sensor 12A is emitted from the light emitting unit 16a, for example, as in the blinking patterns shown in FIGS. 4 (d) and 4 (e). When the time zone in which the light is off is longer than the blinking pattern of the light shown in a), the light emitting unit 14a and the light receiving unit 16a of the intrusion detection sensor 12A have failed, and the light emitting unit 14a and the light receiving unit have failed. It is assumed that there is an obstacle between 16a and 16a. As described above, the cause of the abnormality of the photoelectric sensor 12 assumed from the comparison result in S40 may be retained as a part of the information of the abnormality determination of the photoelectric sensor 12.

S70 (confirmation of diagnostic target): The diagnostic control unit 18 determines whether or not the photoelectric sensor 12 of the diagnostic target that has not yet been diagnosed remains. Then, when such a photoelectric sensor 12 (corresponding to the overpass detection sensor 12B in this embodiment) remains (YES), the process returns to S30 and the diagnosis of the photoelectric sensor 12 is executed. On the other hand, when the photoelectric sensor 12 to be diagnosed that has not been diagnosed does not remain (NO), the process proceeds to S80.
S80 (Abnormality determination confirmation): The control device 40 of the three-dimensional parking device 30 acquires the diagnosis result of the photoelectric sensor 12 to be diagnosed from the diagnostic control unit 18, and determines whether or not the photoelectric sensor 12 determined to be abnormal exists. judge. Then, when there is at least one photoelectric sensor 12 determined to be abnormal (YES), the process proceeds to S90, and when there is no photoelectric sensor 12 determined to be abnormal (NO), the process proceeds to S120. ..

S90 (photoelectric sensor abnormality display): The control device 40 of the three-dimensional parking device 30 displays on the display unit 38 of the operation panel 36 that the photoelectric sensor 12 determined to be abnormal in S60 is abnormal. At this time, as described in S60, if the cause of the abnormality of the photoelectric sensor 12 is assumed to some extent, the information indicating the cause may be displayed on the display unit 38.
S100 (Suppression of operation of the three-dimensional parking device): The control device 40 of the three-dimensional parking device 30 suppresses the operation of a part of the three-dimensional parking device 30. In this embodiment, the calling operation of the plurality of movable pallets 32 (32a to 32i) provided in the three-dimensional parking device 30 and the opening / closing operation of the plurality of opening / closing gates 34 (34a to 34c) are suppressed. After that, until the inspection / restoration work S110 of the photoelectric sensor 12 described later is completed, the calling operation S120 of the movable pallet 32 and the closing operation S150 of the opening / closing gate 34 described later are not accepted.

S110 (Inspection / restoration work of photoelectric sensor): A worker or the like inspects the photoelectric sensor 12 (intrusion detection sensor 12A) determined to be abnormal in S60, and performs restoration work to recover from the abnormality. .. At this time, if the information on the cause of the abnormality is displayed on the display unit 38, the work may be performed while considering the information. For example, when it is displayed that the light receiving unit 16 of the photoelectric sensor 12 receives light other than the light emitted from the light emitting unit 14 paired with the light receiving unit 16 as the cause information of the abnormality. , The incoming light may be eliminated, the light emitting source may be adjusted, the light receiving unit 16 of the photoelectric sensor 12 may be adjusted, and the like. Further, when an obstacle exists or a failure of the photoelectric sensor 12 is displayed as the cause information of the abnormality, the obstacle may be eliminated, or the photoelectric sensor 12 may be repaired or replaced.

Here, since the processes of S120 to S170 shown below are normal processes when the three-dimensional parking device 30 is used, they will be briefly described.
S120 (pallet calling operation): The user of the three-dimensional parking device 30 inputs a desired movable pallet 32 calling operation for loading and unloading the vehicle to the operation panel 36.
S130 (pallet calling operation): The drive unit 50 is controlled by the control device 40 to move the movable pallet 32 input in S120 to a position where the vehicle can be loaded and unloaded. When the movement of the movable pallet 32 is completed, the drive unit 50 is controlled by the control device 40 to raise the opening / closing gate 34 on the front side of the movable pallet 32 so that the vehicle can be loaded and unloaded in the movable pallet 32. do.

S140 (Vehicle entry / exit): The user of the three-dimensional parking device 30 enters / exits the vehicle with respect to the desired movable pallet 32 called in S130.
S150 (Opening / Closing Gate Closing Operation): The user of the three-dimensional parking device 30 inputs an operation for closing the opening / closing gate 34 opened in S130 to the operation panel 36.
S160 (open / close gate closing operation): The drive unit 50 is controlled by the control device 40, and the open / close gate 34 opened in S130 is lowered and closed.
S170 (power off): The user of the three-dimensional parking device 30 operates the operation panel 36 to turn off the power of the three-dimensional parking device 30 (power of the operation panel 36).

The photoelectric sensor diagnostic system 10 and the control device 40 of the three-dimensional parking device according to the embodiment of the present invention are limited to the application to the three-dimensional parking device 30 having a structure as shown in FIGS. 1 and 2. is not it. That is, the three-dimensional parking device 30 may be configured to include more (or less) movable pallets 32 in the height direction (vertical direction in FIG. 2) and the parallel direction (horizontal direction in FIG. 2). The movable pallet 32 may be provided not only on the ground but also in the basement. Further, the movable pallets 32 may not move in the parallel direction, but may move only in the height direction in conjunction with each row in the height direction. Further, a configuration may be provided in which a plurality of rows of movable pallets 32 are provided not only in the height direction and the parallel direction but also in the front-rear direction (from the front right to the back left in FIG. 2). Further, the photoelectric sensor 12 included in the three-dimensional parking device 30 is not limited to the embodiments of FIGS. 1 and 2, and may include more (or less) photoelectric sensors 12, and each photoelectric sensor may be provided. The position where the 12 is installed is also arbitrary. Further, as a matter of course, the photoelectric sensor 12 to be diagnosed by the photoelectric sensor diagnostic system 10 is also arbitrary, and the photoelectric sensor 12 other than the intrusion detection sensor 12A and the overcoming detection sensor 12B may be the diagnosis target. Is.

Further, the flow chart shown in FIG. 3 shows an example of a process flow for explaining a diagnostic method of a photoelectric sensor and a control method of a three-dimensional parking device according to an embodiment of the present invention. Therefore, the process flow to which the method of diagnosing the photoelectric sensor and the method of controlling the three-dimensional parking device according to the embodiment of the present invention is applied is not limited to the process flow shown in FIG. 3, for example, the three-dimensional parking device 30. Depending on the structure, usage status, etc. of the above, a part of the process shown in FIG. 3 may be deleted, changed, or added as appropriate. Further, the method for diagnosing the photoelectric sensor (S20 to S70 in FIG. 3) and the method for controlling the three-dimensional parking device (S80 to S100 in FIG. 3) according to the embodiment of the present invention are limited to the execution at the timing shown in FIG. For example, it may be executed at a timing when the three-dimensional parking device 30 is not used. At this timing, the power of the operation panel 36 of the three-dimensional parking device 30 is not turned on, but since the three-dimensional parking device 30 is in a state where the main power is turned on except for a special timing such as maintenance. , There is no problem in executing the diagnosis. If an abnormality in the photoelectric sensor 12 is detected while the power of the operation panel 36 is not turned on, the next time the power of the operation panel 36 is turned on, the display unit 38 of the operation panel 36 is displayed. It suffices to indicate that there is an abnormality in the photoelectric sensor 12.

Now, according to the embodiment of the present invention having the above configuration, it is possible to obtain the following effects. That is, the method for diagnosing the photoelectric sensor according to the embodiment of the present invention is for diagnosing the photoelectric sensor 12 provided in the three-dimensional parking device 30 as shown in FIGS. 1 and 2. Specifically, light is emitted from the light emitting unit 14 of the photoelectric sensor 12 to be diagnosed in a predetermined blinking pattern (see S30 in FIG. 3), and the light received by the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed is emitted. The blinking pattern is compared with a predetermined blinking pattern of the light emitted from the light projecting unit 14 (see S40 in FIG. 3), and the abnormality of the photoelectric sensor 12 is determined based on the comparison result. Here, the predetermined blinking pattern is different from the emission pattern of the light emitted from the light projecting unit 14 of the photoelectric sensor 12 during the object detection operation (light is constantly emitted, see FIG. 4C), for example, FIG. It is a blinking pattern as shown in (a). Then, when light is emitted from the light emitting unit 14 in such a predetermined blinking pattern, the light receiving unit 16 paired with the light emitting unit 14 usually receives light in a blinking pattern that matches the predetermined blinking pattern. Will be. Therefore, when the blinking pattern of the light received by the light receiving unit 16 matches the predetermined blinking pattern, it is determined that there is no abnormality in the photoelectric sensor 12 to be diagnosed (see S50 in FIG. 3).

On the other hand, as a result of comparing the blinking pattern of the light received by the light receiving unit 16 with the predetermined blinking pattern, if both blinking patterns do not match, the light emitted from the light emitting unit 14 by the light receiving unit 16 is the same as the light emitted from the light emitting unit 14. Since it is possible that another light is being detected, it is determined that the photoelectric sensor 12 has an abnormality (see S60 in FIG. 3). For example, when the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed receives the light emitted from the light emitting unit 14 of the photoelectric sensor 12 during the object detection operation, which is different from the photoelectric sensor 12 to be diagnosed. The blinking pattern of the received light is considered to be a pattern in which light is constantly emitted. As described above, such a blinking pattern is different from the predetermined blinking pattern and does not match the predetermined blinking pattern. Therefore, it is determined that the photoelectric sensor 12 has an abnormality. Therefore, in the method for diagnosing a photoelectric sensor according to an embodiment of the present invention, the light receiving unit 16 of the photoelectric sensor 12 to be diagnosed emits light other than the light emitted from the light emitting unit 14 paired with the light receiving unit 16. Even when it is detected, it can be determined that there is an abnormality in the photoelectric sensor 12. Therefore, it is possible to avoid the detection omission of the photoelectric sensor 12 due to the light receiving unit 16 receiving light different from the light emitted from the light projecting unit 14, and the detection accuracy of the photoelectric sensor 12 is further improved. It becomes possible.

Further, in the method for diagnosing a photoelectric sensor according to an embodiment of the present invention, the three-dimensional parking device 30 provided with the photoelectric sensor 12 is provided with an opening / closing gate 34 on the front surface as shown in FIGS. 1 and 2, and the photoelectric sensor is provided. 12 includes an intrusion detection sensor 12A and an overcoming detection sensor 12B, and at least these intrusion detection sensors 12A and overcoming detection sensors 12B are subject to diagnosis. The light emitting unit 14a and the light receiving unit 16a constituting the intrusion detection sensor 12A are installed below the opening / closing gate 34 on the front side in order to detect the intrusion of a person or the like into the three-dimensional parking device 30, and are used for overcoming detection. The light emitting unit 14b and the light receiving unit 16b constituting the sensor 12B are installed on the front side and above the opening / closing gate 34 in order to detect the overpassing of the opening / closing gate 34. That is, both of these two photoelectric sensors 12 detect an object on the front side of the three-dimensional parking device 30, which is generally an entry port when a person or the like enters the three-dimensional parking device 30. By targeting such two photoelectric sensors 12 for diagnosis, it is possible to avoid the detection omission of the photoelectric sensor 12 which is particularly related to the intrusion from the front side of the three-dimensional parking device 30, so that the safety is more complete. It can be secured in the parking device 30.

Further, in the diagnostic method of the photoelectric sensor according to the embodiment of the present invention, the predetermined blinking pattern of the light emitted from the light projecting unit 14 forms the predetermined blinking pattern as illustrated in FIG. 4A. During a predetermined time T1, a time zone in which light is emitted (light is ON) and a time zone in which light is not emitted (light is OFF) are included at least once. Then, as a result of comparing the predetermined blinking pattern with the blinking pattern of the light received by the light receiving unit 16, the light is received more than the total time of the time zone in which the light is ON, which is included in the predetermined time T1 of the predetermined blinking pattern. The light emitted from the light emitting unit 14 by the light receiving unit 16 when the total time of the time zone in which the light is ON, which is included in the predetermined time T1 of the blinking pattern of the light received by the unit 16, is longer. It is determined that a light different from that of the light is detected. For example, this corresponds to the case where the light receiving unit 16 receives the light of the blinking pattern of FIGS. 4 (b) and 4 (c). That is, in this case, the light receiving unit 16 receives some light and the light is turned on for the total time, even though the timing corresponds to the time zone when the light is turned off, which is included in the predetermined blinking pattern. Is considered to be increasing, so the judgment is made as described above.

On the other hand, the light contained in the predetermined time T1 of the blinking pattern of the light received by the light receiving unit 16 is more than the total time of the time zone in which the light is OFF, which is included in the predetermined time T1 of the predetermined blinking pattern. If the total time in the OFF time zone is longer, it is determined that the photoelectric sensor 12 is out of order or has an obstacle. For example, this corresponds to the case where the light receiving unit 16 receives the light of the blinking pattern of FIGS. 4 (d) and 4 (e). That is, in this case, the light is not detected by the light receiving unit 16 even though the timing corresponds to the time zone when the light is ON, which is included in the predetermined blinking pattern, and the total time when the light is OFF increases. Therefore, it is determined that there is a failure of the light projecting unit 14 and / or a failure of the light receiving unit 16 or some obstacle that blocks the light from the light projecting unit 14. As described above, the method for diagnosing the photoelectric sensor according to the embodiment of the present invention is not only to determine the abnormality of the photoelectric sensor 12, but also to isolate the cause of the abnormality to some extent, and to perform the restoration work of the photoelectric sensor 12 thereafter. (See S110 in FIG. 3) can be efficiently advanced.

Further, in the diagnostic method of the photoelectric sensor according to the embodiment of the present invention, the above diagnosis can be confirmed in FIG. 3 for a predetermined time after the power of the operation panel 36 is turned on (S10) by the user. It is inside, and is executed at the timing before the user operates the three-dimensional parking device 30. This timing is the timing before the user performs the calling operation (S120), the gate opening / closing operation (S160), etc. of the movable pallet 32 of the three-dimensional parking device 30 every time the user starts using the three-dimensional parking device 30. Is. By executing the diagnosis at such a timing, every time the three-dimensional parking device 30 is used, an abnormality of the photoelectric sensor 12 is detected before the movable pallet 32, the opening / closing gate 34, etc. of the three-dimensional parking device 30 operate. Therefore, it is possible to further enhance the safety of the three-dimensional parking device 30.

Further, in the method for diagnosing the photoelectric sensor according to the embodiment of the present invention, the above diagnosis is performed at a predetermined timing when the power of the operation panel 36 is turned off, that is, the three-dimensional parking device 30 is not used. It may be executed with. The predetermined timing for executing the diagnosis is, if the three-dimensional parking device 30 is not used, the timing for a predetermined time every day, the timing immediately after the power of the operation panel 36 is turned off by the user, and the like. Any timing is acceptable. This makes it possible to detect an abnormality in the photoelectric sensor 12 without affecting the control or operation of the three-dimensional parking device 30 when it is used.

On the other hand, the control method of the three-dimensional parking device according to the embodiment of the present invention utilizes the diagnostic method of the photoelectric sensor as described above, and when an abnormality of the photoelectric sensor 12 is detected by those diagnostic methods, The display unit 38 included in the three-dimensional parking device 30 indicates that the photoelectric sensor 12 is abnormal (see S90 in FIG. 3), and at least a part of the operation of the three-dimensional parking device 30 is suppressed (see S100 in FIG. 3). It is a thing. When the plurality of photoelectric sensors 12 included in the three-dimensional parking device 30 are the diagnosis targets, the indication that the photoelectric sensor 12 is abnormal is displayed by identifying the abnormal photoelectric sensor 12 in the three-dimensional parking device 30. Also, if the cause of the abnormality is partially known, it may be displayed together with the cause. Further, the operation of the three-dimensional parking device 30 that suppresses when an abnormality of the photoelectric sensor 12 is detected is, for example, a calling operation of the movable pallet 32 (see S130 in FIG. 3) or an opening / closing operation of the opening / closing gate 34 (S160 in FIG. 3). (See), etc., and in order to realize this, the operation (see S120 and S150 in FIG. 3) input by the user to the operation panel 36 and the like included in the three-dimensional parking device 30 may not be accepted. As a result, the user or the like can be made aware of the abnormality of the photoelectric sensor 12, and the use of the three-dimensional parking device 30 in the state where the abnormality of the photoelectric sensor 12 is detected can be restricted. It is possible to maintain the safety of 30.

The photoelectric sensor diagnostic system 10 according to the embodiment of the present invention shown in FIG. 1 is used in the photoelectric sensor diagnostic method as described above, whereby the photoelectric sensor diagnostic system according to the embodiment of the present invention is used. Can produce the same effect as. Similarly, the control device 40 of the three-dimensional parking device according to the embodiment of the present invention can be used in the control method of the three-dimensional parking device as described above, thereby controlling the three-dimensional parking device according to the embodiment of the present invention. Can produce the same effect as.

10: Photoelectric sensor diagnostic system, 12: Photoelectric sensor, 12A: Intrusion detection sensor, 12B: Override detection sensor, 14 (14a to 14h): Floodlight section, 16 (16a to 16h): Light receiving section, 18: Diagnostic control unit, 30: Three-dimensional parking device, 34 (34a to 34c): Open / close gate, 36: Operation panel, 38: Display unit, 40: Control device for three-dimensional parking device

Claims (10)

It is a diagnostic method of a photoelectric sensor provided with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, the blinking pattern of the light received by the light receiving unit is compared with the predetermined blinking pattern, and an abnormality of the photoelectric sensor is determined based on the comparison result. ,
The three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power supply of the operation panel is turned on and off by the user.
A diagnostic method for a photoelectric sensor, which is executed within a predetermined time after the power of the operation panel is turned on by a user and at a timing before the operation of the three-dimensional parking device is performed . It is a diagnostic method of a photoelectric sensor provided with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, the blinking pattern of the light received by the light receiving unit is compared with the predetermined blinking pattern, and an abnormality of the photoelectric sensor is determined based on the comparison result. ,
The three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power supply of the operation panel is turned on and off by the user.
A diagnostic method for a photoelectric sensor, characterized in that the operation panel is executed at a predetermined timing while the power is being turned off. It is a diagnostic method of a photoelectric sensor provided with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, the blinking pattern of the light received by the light receiving unit is compared with the predetermined blinking pattern, and an abnormality of the photoelectric sensor is determined based on the comparison result. ,
The three-dimensional parking device is provided with an opening / closing gate on the front surface, and as the photoelectric sensor, an intrusion detection sensor for detecting intrusion into the three-dimensional parking device, which is installed on the front side of the opening / closing gate, and the opening / closing gate. It includes a sensor for overcoming detection that detects overcoming.
A diagnostic method for a photoelectric sensor, characterized in that at least the intrusion detection sensor and the overpass detection sensor are diagnostic targets. The three-dimensional parking device is provided with an opening / closing gate on the front surface, and as the photoelectric sensor, an intrusion detection sensor for detecting intrusion into the three-dimensional parking device, which is installed on the front side of the opening / closing gate, and the opening / closing gate. It includes a sensor for overcoming detection that detects overcoming.
The method for diagnosing a photoelectric sensor according to claim 1 or 2 , wherein at least the intrusion detection sensor and the overpass detection sensor are diagnostic targets. When the abnormality of the photoelectric sensor is detected by the diagnostic method of the photoelectric sensor according to any one of claims 1 to 4, the display unit included in the three-dimensional parking device indicates that the photoelectric sensor is abnormal. A method for controlling a three-dimensional parking device, which comprises suppressing the operation of at least a part of the three-dimensional parking device. It is a diagnostic system of a photoelectric sensor equipped with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, and the blinking pattern of the light received by the light receiving unit is acquired, and the predetermined blinking pattern is compared with the blinking pattern of the light acquired from the light receiving unit. A diagnostic control unit that determines an abnormality in the photoelectric sensor based on the comparison result is included.
The three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power supply of the operation panel is turned on and off by the user.
The diagnostic control unit is a photoelectric sensor characterized in that diagnosis is performed within a predetermined time after the power of the operation panel is turned on by the user and before the operation of the three-dimensional parking device is performed . Diagnostic system. It is a diagnostic system of a photoelectric sensor equipped with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, and the blinking pattern of the light received by the light receiving unit is acquired, and the predetermined blinking pattern is compared with the blinking pattern of the light acquired from the light receiving unit. A diagnostic control unit that determines an abnormality in the photoelectric sensor based on the comparison result is included.
The three-dimensional parking device includes an operation panel to which the operation of the three-dimensional parking device is input by the user, and the power supply of the operation panel is turned on and off by the user.
The diagnostic control unit is a diagnostic system for a photoelectric sensor, characterized in that diagnosis is performed at a predetermined timing while the power supply of the operation panel is off. It is a diagnostic system of a photoelectric sensor equipped with a light emitting part and a light receiving part installed in a three-dimensional parking device for object detection.
Light is emitted from the light projecting unit in a predetermined blinking pattern, and the blinking pattern of the light received by the light receiving unit is acquired, and the predetermined blinking pattern is compared with the blinking pattern of the light acquired from the light receiving unit. A diagnostic control unit that determines an abnormality in the photoelectric sensor based on the comparison result is included.
The three-dimensional parking device is provided with an opening / closing gate on the front surface, and as the photoelectric sensor, an intrusion detection sensor for detecting intrusion into the three-dimensional parking device, which is installed on the front side of the opening / closing gate, and the opening / closing gate. It includes a sensor for overcoming detection that detects overcoming.
The diagnostic control unit is a diagnostic system for photoelectric sensors, characterized in that at least the intrusion detection sensor and the overpass detection sensor are diagnostic targets. The three-dimensional parking device is provided with an opening / closing gate on the front surface, and as the photoelectric sensor, an intrusion detection sensor for detecting intrusion into the three-dimensional parking device, which is installed on the front side of the opening / closing gate, and the opening / closing gate. It includes a sensor for overcoming detection that detects overcoming.
The diagnostic system for a photoelectric sensor according to claim 6 or 7 , wherein the diagnostic control unit includes at least the intrusion detection sensor and the overpass detection sensor as diagnostic targets. When the diagnosis result is acquired from the diagnosis system of the photoelectric sensor according to any one of claims 6 to 9 and the diagnosis result indicates that an abnormality of the photoelectric sensor is detected, the display unit included in the three-dimensional parking device is provided. A control device for a three-dimensional parking device, which displays that the photoelectric sensor is abnormal and suppresses the operation of at least a part of the three-dimensional parking device.

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