WO2021157307A1

WO2021157307A1 - Optical sensor diagnosis assistance device, optical sensor diagnosis assistance method, diagnosis assistance system, and automatic door sensor

Info

Publication number: WO2021157307A1
Application number: PCT/JP2021/000886
Authority: WO
Inventors: 絢一松永; 良有清政
Original assignee: ナブテスコ株式会社
Priority date: 2020-02-03
Filing date: 2021-01-13
Publication date: 2021-08-12
Also published as: JP7292440B2; JPWO2021157307A1

Abstract

An automatic door sensor 20 functioning as an optical sensor diagnosis assistance device is provided with a signal acquisition unit 23b and a determination unit 23c and acquires a signal from an optical sensor that receives, by light reception elements 22a provided in a corresponding manner to respective detection segments that are set at specific positions, reflection of light projected from a single light projection element 21a. The signal acquisition unit 23b acquires signals corresponding to the light reception states of the light reception elements 22a provided in a corresponding manner to the respective detection segments. The determination unit 23c determines whether the signals acquired by the signal acquisition unit 23c match each other.

Description

Optical sensor diagnostic support device, optical sensor diagnostic support method, diagnostic support system and automatic door sensor

The present invention relates to, for example, a failure diagnosis support device for an automatic door sensor, a diagnosis support method, a diagnosis support system, and an automatic door sensor.

The automatic door system opens and closes the automatic door by detecting people or objects passing near the entrance and exit of the building with an automatic door sensor such as an infrared system or a radio wave system.

Patent Document 1 discloses an automatic door sensor that transmits an activation signal for opening / closing a door to a drive device when a person or an object is detected. The automatic door sensor includes a plurality of light emitting elements and light receiving elements, and forms a detection area composed of a plurality of segments (hereinafter referred to as “detection segments”) arranged in a matrix on a floor surface through which a person or an object passes. The light projecting element projects a plurality of detection lights through the multi-segment lens onto a plurality of detection segments arranged along the first direction. The light receiving element collects the reflected light from a plurality of detection segments arranged along the second direction orthogonal to the first direction with a condensing lens and receives the light.

Japanese Unexamined Patent Publication No. 2015-17990

By the way, Patent Document 1 does not mention the failure of the light emitting element and the light receiving element. When a failure occurs in the light emitting element and the light receiving element of the automatic door sensor, the phenomenon that the automatic door does not open even though a person or an object has entered the detection area, or the phenomenon that the person or the object is not in the detection area. The phenomenon that the automatic door opens occurs. In order to prevent the frequent occurrence of such a phenomenon, it has been necessary to diagnose whether or not a sensor failure has occurred.

The present invention has been made in view of these problems, and an object of the present invention is to provide a diagnostic support device for an optical sensor, a diagnostic support method for an optical sensor, a diagnostic support system, and an automatic door sensor that can support the diagnosis of a sensor failure. To provide.

One aspect of the present invention is a diagnostic support device for an optical sensor. The diagnostic support device of the optical sensor is a light receiving element in which light is projected from one light projecting element onto a plurality of detection segments set at specific positions, and the reflected light of the light is provided corresponding to each detection segment. A diagnostic support device for an optical sensor that acquires a signal from an optical sensor that receives light, and a signal acquisition unit that acquires a signal corresponding to the light reception status of the light receiving element provided for each detection segment. It is characterized by including a determination unit for determining whether or not the respective signals acquired by the signal acquisition unit match.

Further, in the diagnostic support device for an optical sensor according to another aspect of the present invention, light is projected from a light projecting element provided corresponding to the plurality of detection segments to the plurality of detection segments, and all the light is projected. It is a diagnostic support device for an optical sensor that acquires a signal from an optical sensor that receives the reflected light of light with one light receiving element, and corresponds to the light projection status of the light projecting element provided for each detection segment. It is characterized by including a signal acquisition unit for acquiring each of the signals to be output and a determination unit for determining whether or not the respective signals acquired by the signal acquisition unit match.

Further, the diagnostic support device for the optical sensor according to another aspect of the present invention is provided so that light is projected from one light projecting element onto a plurality of detection segments set at specific positions and corresponding to each detection segment. It is a diagnostic support device for an optical sensor that acquires a signal from an optical sensor that receives the reflected light of the light by the light receiving element, and is a signal corresponding to the light receiving state of the light receiving element provided for each detection segment. The value of each of the signals acquired by the signal acquisition unit is smaller than the predetermined reference value and is equal to or less than the first threshold value, or is greater than or equal to the second threshold value than the predetermined reference value. It is characterized by including a determination unit for determining whether or not it is a value.

Another aspect of the present invention is a diagnostic support method for an optical sensor. The diagnostic support method of the optical sensor is that light is projected from one light projecting element to a plurality of detection segments set at specific positions, and the reflected light of the light is provided by a light receiving element corresponding to each detection segment. This is a diagnostic support method for an optical sensor that acquires a signal from an optical sensor that receives light. It is characterized by including a determination step for determining whether or not each of the signals acquired by the signal acquisition step matches.

Further, in the method for supporting the diagnosis of the optical sensor according to another aspect of the present invention, light is projected from the light projecting elements provided corresponding to the plurality of detection segments to the plurality of detection segments, and all the light is projected. It is a diagnostic support method of an optical sensor that acquires a signal from an optical sensor that receives the reflected light of light with one light receiving element, and corresponds to the light projection status of the light projecting element provided for each detection segment. It is characterized by including a signal acquisition step for acquiring each of the signals to be performed, and a determination step for determining whether or not the respective signals acquired by the signal acquisition step match.

Further, in the diagnostic support device for an optical sensor according to another aspect of the present invention, light is projected from one light projecting element onto a plurality of detection segments set at specific positions in the vicinity of a building opening, and light is projected for each detection segment. A light receiving element provided correspondingly receives the reflected light of the light, and a start signal for opening the automatic door when it is determined from the signal corresponding to the light receiving state of the light receiving element that a person or an object exists is sent. It is characterized by including an automatic door sensor to be generated and a determination unit for determining whether or not each signal corresponding to the light receiving state of the light receiving element provided corresponding to the detection segment matches.

Further, in the diagnostic support device for an optical sensor according to another aspect of the present invention, light is projected onto the plurality of detection segments from a light projecting element provided corresponding to the plurality of detection segments in the vicinity of the opening of the building. A single light receiving element receives the reflected light of all the light, and when it is determined from the signal corresponding to the light receiving state of the light receiving element that a person or an object exists, an activation signal for opening the automatic door is sent. It is characterized by including an automatic door sensor to be generated and a determination unit for determining whether or not each signal corresponding to the light projection status of the light projecting element, which is provided corresponding to each detection segment, matches. do.

Another aspect of the present invention is a diagnostic support system. In the diagnostic support system, light is projected from one light projecting element onto a plurality of detection segments set at specific positions in the vicinity of the opening of the building, and the light receiving element provided corresponding to each detection segment of the light is used. Corresponds to each detection segment with an automatic door sensor that receives reflected light and generates an activation signal to open the automatic door when it is determined from the signal corresponding to the light receiving status of the light receiving element that a person or an object exists. It is characterized by including a determination unit for determining whether or not the respective signals corresponding to the light reception status of the light receiving element are matched, and a setting device for acquiring the determination result by the determination unit. ..

Further, in the diagnostic support system according to another aspect of the present invention, light is projected onto the plurality of detection segments from a light projecting element provided corresponding to the plurality of detection segments in the vicinity of the building opening, and the light is projected. The reflected light of all the light is received by one light receiving element, and a start signal for opening the automatic door is generated when it is determined from the signal corresponding to the light receiving state of the light receiving element that a person or an object exists. Acquires a determination unit that determines whether or not the signals corresponding to the light projection status of the automatic door sensor and the light projecting element provided for each detection segment match, and a determination result by the determination unit. It is characterized in that it is provided with a setting device.

Another aspect of the present invention is an automatic door sensor. A single light projecting element that emits light to a plurality of detection segments set at specific positions, a light receiving element that is provided corresponding to each detection segment and receives the reflected light of the light, and the light receiving light. A start signal processing unit that generates a start signal for opening an automatic door when it is determined from a signal corresponding to the light receiving state of the element that a person or an object exists, and the above-mentioned provided corresponding to each detection segment. It is characterized by including a determination unit for determining whether or not the respective signals corresponding to the light receiving state of the light receiving element match.

Further, the automatic door sensor according to another aspect of the present invention is provided corresponding to a plurality of detection segments, and is projected by a light projecting element that projects light onto the plurality of detection segments and a light projecting element. Start-up that generates a start-up signal to open the automatic door when it is determined that a person or an object exists from one light-receiving element that receives the reflected light of all the light and the signal corresponding to the light-receiving condition of the light-receiving element. It is characterized by including a signal processing unit and a determination unit for determining whether or not each signal corresponding to the light projection status of the light projecting element, which is provided corresponding to each detection segment, matches. ..

It should be noted that any combination of the above components, or the components and expressions of the present invention are mutually replaced between methods, devices, programs, temporary or non-temporary storage media on which programs are recorded, systems, and the like. Is also valid as an aspect of the present invention.

According to the present invention, it is possible to support the diagnosis of sensor failure.

It is a schematic diagram which shows the structure of the automatic door system which concerns on embodiment. It is a block diagram which shows the functional structure of the automatic door system including the automatic door sensor which concerns on embodiment. It is a schematic diagram which shows the detection area on the floor surface. FIG. 4A is a schematic diagram showing an example of a light projection pattern in the detection area, and FIG. 4B is a schematic diagram showing details of the light projection pattern. FIG. 5A is a schematic diagram showing an example of a light receiving pattern in the detection area, and FIG. 5B is a schematic diagram showing details of the light receiving pattern. It is a schematic diagram which shows the example of the reference value of the detection level when a light emitting element and a light receiving element are normal. FIG. 7A is a schematic diagram showing a detection level when the light projecting element has a short-circuit failure, and FIG. 7B is a schematic diagram showing a detection level when the light projecting element has an open failure. FIG. 8A is a schematic diagram showing a detection level when the light receiving element has a short-circuit failure, and FIG. 8B is a schematic diagram showing a detection level when the light receiving element has an open failure. It is a flowchart which shows the procedure of the failure diagnosis processing by an automatic door sensor. It is a schematic diagram which shows the detection level at the time of short-circuit failure of two light projecting elements. It is a schematic diagram which shows the detection level at the time of short-circuit failure of one light projecting element, and open failure of one light projecting element.

In the following embodiments, the same components are designated by the same reference numerals, and duplicate description is omitted. Further, in each drawing, for convenience of explanation, some of the components are omitted as appropriate.

(Embodiment)
FIG. 1 is a schematic view showing the configuration of the automatic door system 100 according to the embodiment. The automatic door system 100 includes an automatic door 10, an automatic door sensor 20, a door controller 30, and the like. The automatic door system 100 shown in FIG. 1 is a double-drawing door type, and two automatic doors 10 automatically open and close to the left and right. The automatic doors 10 are a pair on the left and right, and can be reciprocated along the fixed 15 fixedly arranged at a space on the left and right, and open and close the opening 11 between the left and right fixeds 15. The automatic door system 100 corresponds to the diagnostic support stem in the present invention.

The automatic door 10 is in a fully closed state in which the opening 11 of the building is closed by contacting the left and right door tip frames 10a so as to be abutted against each other. The automatic door 10 moves so that the door tip stile 10a is separated from the door, the door tip stile 10a moves to the vicinity of the mullion 15a of the fix 15, stops, and the opening 11 is fully opened. The automatic door system 100 may be a double sliding door type, a single sliding door type, a revolving door type, or the like.

The automatic door sensor 20 is arranged in the vicinity of the opening 11 of the building, for example, in the transom 16 above the opening 11, and emits, for example, infrared detection light obliquely downward from the arrangement position in the transom 16. It receives the reflected light and detects a person or an object entering the automatic door 10. When the automatic door sensor 20 detects a person or an object, the automatic door sensor 20 outputs a start signal to the door controller 30. The automatic door sensor 20 has a function of diagnosing a failure related to light emission and reception of detection light, and corresponds to the diagnosis support device in the present invention. Details of the automatic door sensor 20 will be described later.

When the door controller 30 receives the start signal from the automatic door sensor 20, it operates the door motor 31 and drives the automatic door 10 until the automatic door 10 is fully opened. After the automatic door 10 is fully opened, the door controller 30 holds the fully open state for a certain period of time, operates the door motor 31 in the reverse direction, and drives the automatic door 10 until the automatic door 10 is fully closed.

FIG. 2 is a block diagram showing a functional configuration of the automatic door system 100 including the automatic door sensor 20 according to the embodiment. Each block can be realized by electronic elements such as a computer CPU and mechanical parts in terms of hardware, and by a computer program in terms of software, but here, it is realized by cooperation between them. I'm drawing a functional block. Therefore, it is understood by those skilled in the art that these functional blocks can be realized in various forms by combining hardware and software.

The automatic door sensor 20 and the door controller 30 are communicated and connected to each other by CAN (Controller Area Network). The communication connection between the automatic door sensor 20 and the door controller 30 is not limited to CAN, and wireless communication such as WiFi (registered trademark) may be used. Further, the automatic door sensor 20 and the setting device 50 are communicated with each other via the communication adapter 40. For the communication connection between the communication adapter 40 and the setting device 50, for example, Bluetooth (registered trademark), WiFi (registered trademark), or the like is used. The setting device 50 is, for example, a portable terminal device, and has functions such as initial setting of the automatic door sensor 20 and the door controller 30 and maintenance.

The automatic door sensor 20 includes a light emitting unit 21, a light receiving unit 22, a processing unit 23, a communication unit 24, a notification unit 25, and a storage unit 26. The communication unit 24 transmits / receives data to / from the door controller 30 via the CAN. Further, the notification unit 25 is, for example, an LED or a liquid crystal display, and notifies the outside of a state such as an ON / OFF state of the operation of the automatic door sensor 20 or a failure. Further, the storage unit 26 is composed of a storage medium such as a RAM, a hard disk, or an SD card, and stores the failure diagnosis results of the light emitting unit 21 and the light receiving unit 22 diagnosed by the processing unit 23.

The light projecting unit 21 is provided with a light projecting element 21a that emits infrared rays or the like. The light projecting element 21a is, for example, an LED that emits infrared rays, and projects light to a detection segment 61, which will be described later, in the vicinity of the opening 11 of the building. The infrared rays emitted by the light projecting element 21a are divided by, for example, a multi-segment lens, and project a plurality of detection lights divided in the first direction X, which is the moving direction of the automatic door 10. The number of elements of the light projecting element 21a can be reduced by projecting the detection light onto a plurality of detection segments 61 arranged along the first direction X in the detection area 60 described later. The light receiving unit 22 includes a light receiving element 22a that receives the reflected light of the detection light. The light receiving element 22a collects the reflected light from the plurality of detection segments 61 arranged along the second direction Y orthogonal to the moving direction of the automatic door 10 with a condensing lens and receives the light. The light receiving element 22a can reduce the number of elements by condensing the reflected light from the plurality of detection segments 61 with a condensing lens.

FIG. 3 is a schematic view showing the detection area 60 on the floor surface. The detection area 60 is provided around the automatic door 10 and has a three-dimensional range from the floor surface to the transom 16 where the automatic door sensor 20 is arranged and the ceiling. The detection area 60 is composed of a plurality of detection segments 61 arranged so as to be arranged in 12 rows in the first direction X, which is the moving direction of the

automatic door

10, and 6 rows in the second direction Y orthogonal to the moving direction of the automatic door 10. Will be done. Addresses (X, Y) corresponding to the positions of the array are assigned to each detection segment 61. As shown in FIG. 3, the addresses (X, Y) are assigned as 1, 2, ..., 12 in order from the left end of the detection segment 61 toward the automatic door 10 in the first direction X, and in the second direction Y. The detection segments 61 closest to the automatic door 10 are assigned 1, 2, ..., 6 in order.

FIG. 4A is a schematic diagram showing an example of a light projection pattern in the detection area 60, and FIG. 4B is a schematic diagram showing details of the light projection pattern. The light projecting element 21a is 18 elements of the light projecting elements A to R, and the detection light divided into four in the first direction X by the multi-division lens is projected onto the detection segment 61. For example, looking at the light projecting element A, as shown in FIG. 4A, the detection segments 61 at four locations of addresses (1,1), (4,1), (7,1), and (10,1). The detection light is projected at the same time.

FIG. 4B shows the light projection patterns by the light projecting elements G, H, and I in the rows of the addresses (X, 3) and (X = 1 to 12) shown by the dotted lines in FIG. 4 (a). .. The light projecting element G simultaneously projects the detection light onto the detection segments 61 at the four addresses (1,3), (4,3), (7,3), and (10,3). Similarly, the light projecting element H simultaneously projects the address detection light onto the detection segments 61 of the addresses (2, 3), (5, 3), (8, 3), and (11, 3). do. The same applies to the other rows. For example, in the row at the address (X, 6), the light projecting elements P, Q, and R simultaneously project the detection light onto each detection segment 61. In this way, each light projecting element 21a of the light projecting unit 21 projects light to a plurality of detection segments 61 set at specific positions.

FIG. 5A is a schematic diagram showing an example of a light receiving pattern in the detection area 60, and FIG. 5B is a schematic diagram showing details of the light receiving pattern. The light receiving element 22a is 26 elements of the light receiving elements a to x, and receives the reflected light in the three detection segments 61 in the second direction Y by the condensing lens. For example, looking at the light receiving element a, as shown in FIG. 5A, the reflected light in the three detection segments 61 at the addresses (1,1), (1,3), and (1,6) is simultaneously received. ..

FIG. 5 (b) shows a light receiving pattern by the light receiving elements o and p in the rows of addresses (8, Y) and (Y = 1 to 6) shown by dotted lines in FIG. 5 (a). The light receiving element o simultaneously receives the reflected light in the detection segments 61 at the three addresses (8, 1), (8, 3), and (8, 5). Similarly, the light receiving element p simultaneously receives the reflected light in the detection segments 61 at the three addresses (8, 2), (8, 4), and (8, 6). The same applies to the other rows. For example, in the row of addresses (12, Y), the light receiving elements w and x simultaneously receive the reflected light in each detection segment 61. In this way, each light receiving element 22a of the light receiving unit 22 receives the reflected light from the plurality of detection segments 61 set at specific positions.

The shape of each detection segment 61 and the shape of the entire detection area 60 may be a circle, an ellipse, a rectangle, or a polygon other than the above-mentioned rectangle. A multi-segment lens is formed according to the shape of each detection segment 61 and the entire detection area 60, and the detection light is projected onto the plurality of detection segments 61 by at least one projection element 21a among the plurality of projection elements 21a. .. Further, a condenser lens is formed according to the shape of each detection segment 61 and the entire detection area 60, and the reflected light in the plurality of detection segments 61 is received by at least one light receiving element 22a among the plurality of light receiving elements 22a. The detection segment 61 means an individual area in which the detection area 60 is divided into a plurality of portions. On the contrary, it may be considered that the detection area 60 is formed as a whole by the plurality of detection segments 61.

In the above example, the position of the detection segment 61 is defined by assigning an address. For example, the coordinates in the coordinate system in the real space defined with the arrangement position of the automatic door sensor 20 in the blind 16 as the origin are used. The position of the detection segment 61 may be defined. Further, the position of the detection segment 61 may be the coordinates in the coordinate system in the real space defined with an arbitrary position on the floor surface or the like as the origin, and in any definition, the position of each detection segment 61 is defined. It suffices if it can be uniquely grasped.

The processing unit 23 includes a start signal processing unit 23a, a signal acquisition unit 23b, a determination unit 23c, and a failure diagnosis unit 23d. The activation signal processing unit 23a generates an activation signal for opening the automatic door 10 when a person or an object is detected in each detection segment 61 of the detection area 60. The start-up signal processing unit 23a outputs the generated start-up signal to the door controller 30 via the communication unit 24.

The activation signal processing unit 23a monitors the detection level of the reflected light in each detection segment 61, and has a first threshold value lower than the reference value of the detection level when no person or object exists in the detection segment 61, and a first threshold value higher than the reference value. 2 It is determined whether or not a person or an object exists by comparing with the threshold value. The activation signal processing unit 23a sequentially acquires the detection levels in each detection segment 61 from the light receiving unit 22, and when the detection level becomes equal to or lower than the first threshold value or equal to or higher than the second threshold value, it is determined that a person or an object exists. Judge and generate a start signal.

The signal acquisition unit 23b acquires a signal generated based on the reflected light for each detection segment 61 according to the light receiving condition. Specifically, the signal acquisition unit 23b determines the detection level of the reflected light in each detection segment 61. It is acquired from 22 or the start signal processing unit 23a and input to the determination unit 23c. Further, the signal acquisition unit 23b may acquire the start signal from the start signal processing unit 23a and input it to the determination unit 23c.

The determination unit 23c has the light projecting element 21a and the light receiving element 22a based on the value of the signal acquired by the signal acquisition unit 23b, that is, the detection level of the reflected light in each input detection segment 61 or the value of the activation signal. Helps determine if it is out of order. It is assumed that the light projecting element 21a and the light receiving element 22a are electrically short-circuited or open-circuited, and a person or an object is present in the detection segment 61 corresponding to the light emitting element 21a and the light receiving element 22a in which the failure has occurred. The detection level changes even in the absence state. Whether or not the detection level changes from the reference value and shows a predetermined value in the detection segment 61 at a plurality of specific positions corresponding to each light emitting element 21a and each light receiving element 22a in the detection segment 61. To judge. The specific position is the position of the plurality of detection segments 61 set at predetermined positions where each light projecting element 21a projects light as described above, and each light receiving element 22a receives the reflected light. It is the position of a plurality of detection segments 61 set at a predetermined position. Hereinafter, the positions of the plurality of specific detection segments 61 among the plurality of detection segments 61, that is, the positions of the plurality of detection segments 61 corresponding to each of the light emitting element 21a and the light receiving element 22a, are specified or arranged in the plurality of detection segments 61. We will simply call it a specific arrangement. When the detection level changes from the reference value and shows a predetermined value in the specific arrangement of the plurality of detection segments 61, it is determined that an open failure or a short circuit failure has occurred. The predetermined value may be a value changed from the reference value, and may be a numerical range having a predetermined width. Further, regarding the output signals of the light receiving elements 22a in the specific arrangement of the plurality of detection segments 61, in addition to the case where they change from the reference value and have the same value, the value changes from the reference value and becomes a different value, but the reference value. It is assumed that the output signals of the light receiving element 22a in the specific arrangement match even when they are in agreement in that they have changed from.

First, a failure determination of the light projecting element 21a based on the determination of the determination unit 23c will be described. FIG. 6 is a schematic diagram showing an example of a reference value of the detection level when the light emitting element 21a and the light receiving element 22a are normal. The determination unit 23c acquires a reference value from the start signal processing unit 23a in advance and uses it for determination. The reference value in each detection segment 61 is actually obtained as a voltage value in each light receiving element 22a or a value after digital conversion thereof, and is determined and not uniform for each detection segment 61. Here, for the sake of brevity, the reference value of the normal detection level is set to 50 in all the detection segments 61 as shown in FIG. When at least one of the plurality of light projecting elements 21a fails, the detection level changes.

FIG. 7A is a schematic diagram showing a detection level when the light projecting element 21a has a short-circuit failure, and FIG. 7B is a schematic diagram showing a detection level when the light projecting element 21a has an open failure. In FIG. 7A, the light projecting element A has a short-circuit failure, and the detection light from the light projecting element A is always projected onto the detection area 60. Hereinafter, for the sake of brevity, the detection segment 61 of the address (X, Y) will be referred to as a detection segment (X, Y).

Let's look at one row of addresses (1, Y) including the detection segments (1, 1) where the detection light is projected by the light projecting element A. In the detection segment (1, 1), the light projecting element A is turned on, and the light receiving element a receives light and detects it. When the light emitting element A is short-circuited and is always on, the detection level of the light receiving element a is 50, which is a normal value. In the detection segments (1, 3), the light projecting element G is turned on, and the light receiving element a receives light and detects it. Since the light projecting element A has a short-circuit failure, the light receiving element a collects the reflected light from the detection segments (1, 1) and (1, 3) and receives the light, and when the detection level is normal. It becomes 100, which is an abnormal value as a predetermined value deviating from the reference value of the detection level of. In the detection segment (1, 5) as well, the detection level by the light receiving element a is 100, which is an abnormal value, as in the case of the detection segment (1, 3).

In the detection segments (1 and 2), the light projecting element D is turned on, and the light receiving element b receives light and detects it. Since the light receiving element b collects and detects the reflected light of the detection segment 61 that is not affected by the light projecting element A that has a short-circuit failure, the detection level becomes 50, which is a normal value. Similarly, in the detection segments (1,4) and (1,6), the detection level is 50, which is a normal value.

The columns in which the light projecting element A affects the detection level are four columns of addresses (1, Y), (4, Y), (7, Y) and (10, Y), and in the detection segment 61 in the other columns. The detection levels are all 50, which is the normal value. Therefore, when a short-circuit failure occurs in the light projecting element A, a specific arrangement (specific pattern) of a plurality of detection segments having a detection level of 100, which is an abnormal value, appears.

In the determination unit 23c, the detection level in the detection segment 61 of the specific arrangement of the four columns of addresses (1, Y), (4, Y), (7, Y) and (10, Y) is an abnormal value of 100. At that time, it is determined that the predetermined value is set in the specific arrangement. Further, the determination unit 23c can support the determination of whether or not the other light projecting element 21a has a short-circuit failure, as in the case of the light projecting element A.

The determination unit 23c can support the determination of whether or not the light projecting element A is short-circuited or not by the activation signal generated by the activation signal processing unit 23a. For example, when the second threshold value is set to 75 with respect to the detection level reference value of 50, an activation signal is generated based on the detection level of the detection segment 61 of the specific arrangement being an abnormal value of 100. If it is found that the light projecting element 21a has been short-circuited, it can be determined that the corresponding light projecting element 21a has failed. The determination unit 23c may acquire the start signal as a signal obtained from the signal acquisition unit 23b and the address information of the detection segment 61 corresponding to the start signal generated by the start signal processing unit 23a.

In FIG. 7B, the light projecting element A has an open failure, and the light projecting element A is not always projecting light into the detection area 60. In this case, the detection levels in the detection segments (1,1), (4,1), (7,1) and (10,1) as the specific arrangement in which the detection light should be projected by the light projecting element A are set. It becomes 0, which is an abnormal value. The detection level in these detection segments (1, 1) and the like is 0, which is an abnormal value as a predetermined value deviating from the reference value at the normal time.

The determination unit 23c determines that the detection level has reached a predetermined value in the specific arrangement when the detection level becomes an abnormal value in the detection segment (1, 1) or the like affected by the opening failure of the light projecting element A. In such a case, it can be determined that the light projecting element A has an open failure. Further, the determination unit 23c can support the determination of whether or not the other light projecting element 21a has an open failure, as in the case of the light projecting element A.

The determination unit 23c can support the determination as to whether or not the floodlight element A has an open failure by the start signal generated by the start signal processing unit 23a, as in the case of the short circuit failure. For example, when the first threshold value is set to 25 with respect to the reference value of 50 of the detection level, the activation signal is generated based on the detection level of the specific arrangement being 0, which is an abnormal value. If it is known, it can be determined that the corresponding light projecting element 21a has failed to open. The determination unit 23c may acquire the start signal as a signal obtained from the signal acquisition unit 23b and the address information of the detection segment 61 corresponding to the start signal generated by the start signal processing unit 23a.

FIG. 8A is a schematic diagram showing a detection level when the light receiving element 22a has a short-circuit failure, and FIG. 8B is a schematic diagram showing a detection level when the light receiving element 22a has an open failure. In FIG. 8A, the light receiving element g has a short-circuit failure, and the detection level by the light receiving element g becomes the maximum value in the detection level range. Therefore, the detection levels in the detection segment (4, 1), the detection segment (4, 3), and the detection segment (4,5) that receive the reflected light by the light receiving element g are predetermined values that deviate from the reference values at the normal time. It becomes the maximum value which is an abnormal value as.

The determination unit 23c pays attention to, for example, one column of addresses (4, Y), and as described above, the detection segment (4, 1), the detection segment (4, 3), and the detection segment (4,5) are specifically arranged. When the detection level in is the maximum value which is an abnormal value, it is determined that the predetermined value is reached in the specific arrangement. In such a case, it can be determined that the light receiving element g is short-circuited. The determination unit 23c can assist in determining whether or not the other light receiving element 22a has a short-circuit failure, as in the case of the light receiving element g.

The determination unit 23c can support the determination of whether or not the light receiving element g is short-circuited or not by the activation signal generated by the activation signal processing unit 23a. If it is found that the activation signal is generated based on the detection level at the specific arrangement being the maximum value which is an abnormal value, it can be determined that the corresponding light receiving element g has a short-circuit failure. The determination unit 23c may acquire the start signal as a signal obtained from the signal acquisition unit 23b and the address information of the detection segment 61 corresponding to the start signal generated by the start signal processing unit 23a.

In FIG. 8B, the light receiving element g has an open failure, and the detection level by the light receiving element g becomes 0, which is the minimum value in the detection level range. Therefore, the detection levels in the detection segment (4, 1), the detection segment (4, 3), and the detection segment (4,5) that receive the reflected light by the light receiving element g are predetermined values that deviate from the reference values at the normal time. It becomes 0 which is an abnormal value as.

The determination unit 23c pays attention to, for example, one column of addresses (4, Y), and as described above, the detection segment (4, 1), the detection segment (4, 3), and the detection segment (4,5) are specifically arranged. When the detection level in is 0, which is an abnormal value, it is determined that the value has reached a predetermined value in the specific arrangement. In such a case, it can be determined that the light receiving element g has an open failure. The determination unit 23c can support the determination of whether or not the other light receiving element 22a has an open failure, as in the case of the light receiving element g.

The determination unit 23c can also support the determination of whether or not the light receiving element g has an open failure by the activation signal generated by the activation signal processing unit 23a. If it is found that the activation signal is generated based on the detection level in the specific arrangement being 0, which is an abnormal value, it can be determined that the corresponding light receiving element g has failed to open. The determination unit 23c may acquire the start signal as a signal obtained from the signal acquisition unit 23b and the address information of the detection segment 61 corresponding to the start signal generated by the start signal processing unit 23a.

When the failure diagnosis unit 23d determines that the predetermined values are set in the plurality of detection segments 61 having the specific arrangement by the determination unit 23c, the light projecting elements 21a and the light projecting elements 21a corresponding to the plurality of detection segments 61 having the specific arrangement are determined. It is diagnosed that one or both of the light receiving elements 22a are defective. By providing the failure diagnosis unit 23d, the automatic door sensor 20 can automatically identify and provide a specific failure location and failure content. Even if the failure diagnosis unit 23d is not provided as described above, the failure location and the failure content of the specific light emitting element 21a and the light receiving element 22a are specified based on the determination result by the determination unit 23c. You can judge.

Next, the operation of the automatic door system 100 according to the embodiment will be described based on the failure diagnosis process by the automatic door sensor 20. FIG. 9 is a flowchart showing a procedure of failure diagnosis processing by the automatic door sensor 20. In the failure diagnosis processing procedure, when the detection levels in the plurality of detection segments 61 become abnormal values, whether the light emitting element 21a is short-circuited or opened, or the light receiving element 22a is short-circuited or opened. Is further diagnosed, and which of the light emitting element 21a and the light receiving element 22a is responsible for the failure. Note that FIG. 9 describes processing based on the detection level in the detection segment 61 as a signal obtained from the signal acquisition unit 23b, but the failure diagnosis processing can also be performed in the same manner by the activation signal generated by the activation signal processing unit 23a. can.

The determination unit 23c of the automatic door sensor 20 determines whether or not the detection level is different from the reference value in the plurality of detection segments 61 (S1), and if the determination result is no (S1: NO), step S1. Repeat the process of. When it is determined in step S1 that the detection levels of the plurality of detection segments 61 are different from the reference values (S1: YES), the determination unit 23c determines whether or not the plurality of detection segments 61 are arranged in the first direction X. (S2).

When it is determined in step S2 that the plurality of detection segments 61 are arranged in the first direction X (S2: YES), the determination unit 23c has a specific pattern having a detection level different from the reference value. It is determined whether or not a plurality of detection segments 61 exist in a plurality of rows and the value is higher than the reference value (S3). In step S3, when it is determined that a plurality of detection segments 61 exist in a plurality of rows and the value is higher than the reference value (S3: YES), the failure diagnosis unit 23d determines that the light projecting element 21a has a short-circuit failure. The determination is made, the light projecting element 21a having a short-circuit failure is identified from the arrangement of the detection segment 61 (S4), and the process is terminated.

If it is determined as no in step S3 (S3: NO), the determination unit 23c determines whether or not there is only one row of the plurality of detection segments and the detection level is 0 (S5). In step S5, when it is determined that there is only one row of a plurality of detection segments having a specific pattern and the detection level is 0 (S5: YES), the failure diagnosis unit 23d of the light projecting element 21a It is determined that the failure is open, the light projecting element 21a that has the failure is identified from the arrangement of the detection segment 61 (S6), and the process is terminated. If it is determined to be negative in step S5 (S5: NO), the process returns to step S1 and the process is repeated.

When it is determined in step S2 that a plurality of detection segments 61 having a detection level different from the reference value are not arranged in the first direction X (S2: NO), the determination unit 23c determines the plurality of detection segments 61. Is determined in the second direction Y (S7). If it is determined to be negative in step S7 (S7: NO), the process returns to step S1 and the process is repeated. When it is determined in step S7 that the plurality of detection segments 61 are arranged in the second direction Y (S7: YES), the determination unit 23c has a plurality of specific patterns having a detection level different from the reference value. It is determined whether or not the detection level in the detection segment 61 of is the maximum value (S8).

When the detection levels of the plurality of detection segments 61 are the maximum values in step S8 (S8: YES), the failure diagnosis unit 23d determines that the light receiving element 22a has a short-circuit failure, and the short-circuit failure is determined from the arrangement of the detection segments 61. The light receiving element 22a is specified (S9), and the process is terminated.

When it is determined as negative in step S8 (S8: NO), whether the determination unit 23c has a detection level of 0 in a plurality of detection segments 61 having a specific pattern having a detection level different from the reference value. It is determined whether or not (S10). When it is determined in step S10 that the detection levels of the plurality of detection segments 61 are 0 (S10: YES), the failure diagnosis unit 23d determines that the light receiving element 22a is an open failure, and from the arrangement of the detection segments 61. The light receiving element 22a that has an open failure is identified (S11), and the process is terminated. If it is determined to be negative in step S10 (S10: NO), the process returns to step S1 and the process is repeated.

When the detection levels of the plurality of detection segments 61 in the detection area 60 become abnormal values, the determination unit 23c of the automatic door sensor 20 is based on the arrangement of the detection segments 61 in the first direction X and the second direction Y. , The failure diagnosis of the light emitting element 21a and the light receiving element 22a is performed. The determination unit 23c determines whether the cause of the failure is the short-circuit or open failure of the light projecting element 21a or the short-circuit or open failure of the light receiving element 22a.

Each light projecting element 21a is configured to project detection light onto two or more detection segments 61 by, for example, a multi-segment lens. When the light projecting element 21a fails, the detection level becomes an abnormal value at the same time in a specific arrangement including two or more detection segments 61 corresponding to the light projecting element 21a. Further, each light receiving element 22a is configured to receive the reflected light in two or more detection segments 61 by, for example, a condensing lens. When the light receiving element 22a fails, the detection level becomes an abnormal value at the same time in the specific arrangement including the two or more detection segments 61 corresponding to the light receiving element 22a.

The determination unit 23c is based on the specific arrangement of the plurality of detection segments 61 that become abnormal values in the detection area 60 in the case of each failure of the light projecting element 21a and the light receiving element 22a, and the failing light projecting element 21a and the light receiving element Identify 22a. The automatic door sensor 20 can support the diagnosis of the sensor failure by determining which cause of the failure corresponds to and identifying the failing light emitting element 21a and the light receiving element 22a.

When the detection level is equal to or lower than the first threshold value or higher than the second threshold value, the activation signal processing unit 23a determines that a person or an object has entered the detection area 60 and generates an activation signal. The determination unit 23c suppresses the opening and closing of the automatic door 10 due to a failure of the light projecting element 21a and the light receiving element 22a by determining that the detection level is an abnormal value when the detection level is equal to or lower than the first threshold value or higher than the second threshold value. Therefore, failure diagnosis can be supported.

The automatic door sensor 20 stores the determination result that the determination unit 23c indicates an abnormal value in a specific arrangement in the storage unit 26. For example, the determination result stored in the storage unit 26 can be read out and acquired by an external device such as the setting device 50, and the failure of the light emitting element 21a and the light receiving element 22a can be known. The determination result by the determination unit 23c may be stored not only in the storage unit 26 but also in a device such as a data logger or a server device provided outside the automatic door sensor 20.

In the above-described embodiment, the determination unit 23c is provided in the automatic door sensor 20, but the determination unit 23c may be provided in an external device of the automatic door sensor 20 such as the setting device 50, for example. In the automatic door sensor 20, information such as a detection level, a start signal, and a detection segment 61 required for failure diagnosis is stored in a storage unit 26, and a failure diagnosis is performed by an external device provided with a determination unit 23c. In this case, the external device or the device composed of the automatic door sensor 20 and the external device corresponds to the diagnostic support device in the present invention.

Further, the circuit configuration of the light emitting element 21a and the light receiving element 22a also shows the specific arrangement of the plurality of detection segments 61 that become abnormal values at the time of circuit failure. The determination unit 23c diagnoses an erroneous detection, a circuit failure, or the like based on the specific arrangement of a plurality of detection segments 61 that have become abnormal values in the erroneous detection or the circuit failure of unknown cause known in the past. You may.

(Modification example)
FIG. 10 is a schematic diagram showing a detection level when two light projecting elements 21a are short-circuited and failed. FIG. 10 shows a case where the light projecting elements A and G have a short-circuit failure, with the reference value of the detection level in the normal state being 50. Looking at one row of addresses (1, Y), the detection level becomes an abnormal value of 100 in the detection segments (1, 1) and (1, 3) due to the short-circuit failure of the light projecting elements A and G. Further, the detection level in the detection segments (1, 5) is an abnormal value of 150. Similar to the one column of the address (1, Y), in each column of the addresses (4, Y), (7, Y) and (10, Y), an abnormal value due to a short-circuit failure of the light projecting elements A and G is found. appear.

Due to a short-circuit failure of the light projecting elements A and G, the detection level becomes an abnormal value in a specific arrangement consisting of a plurality of detection segments 61. The determination unit 23c can determine that the two light projecting elements A and G are short-circuited based on the fact that the detection level is an abnormal value in the specific arrangement including the plurality of detection segments 61. In FIG. 10, focusing on one row of addresses (1, Y), the case of a short-circuit failure of the light projecting elements A and G is shown, but the same applies to other rows such as addresses (2, Y).

FIG. 11 is a schematic diagram showing a detection level when one floodlight element 21a has a short-circuit failure and one floodlight element 21a has an open failure. FIG. 11 shows a case where the reference value of the detection level in the normal state is set to 50, the light projecting element A has a short-circuit failure, and the light projecting element G has an open failure. Looking at one column of addresses (1, Y), the detection level becomes 50, which is a normal value, in the detection segments (1, 1) and (1, 3) due to the failure of the light projecting elements A and G, and the detection segment (1, Y) The detection level in 1 and 5) is an abnormal value of 100. Similar to the one column of the address (1, Y), in each of the columns of the addresses (4, Y), (7, Y) and (10, Y), the short-circuit failure of the light projecting element A and the short circuit failure of the light projecting element G and the light projecting element G An abnormal value appears due to an open failure.

Due to a short-circuit failure of the light projecting element A and an opening failure of the light projecting element G, the detection level becomes an abnormal value in a specific arrangement consisting of a plurality of detection segments 61. The determination unit 23c can determine that the two light projecting elements A and G are out of order based on the detection level being an abnormal value in the specific arrangement including the plurality of detection segments 61. In FIG. 11, focusing on one column of addresses (1, Y), the case of short-circuit and open failure of the light projecting elements A and G is shown, but the same applies to other columns such as addresses (2, Y). be.

In the above-described embodiment and modification, attention is paid to whether or not the detection level appears in the detection segment 61 of the specific arrangement for the signal detected in each detection segment 61 of the detection area 60. Even when the signal is digitally acquired as "1" or "0", a plurality of detection segments 61 having a signal value of "1" (that is, a predetermined value) appear in the detection segment 61 of the specific arrangement. Based on this, it can be determined that the light emitting element 21a and the light receiving element 22a are at least short-circuited, as in the above-described embodiment and modification. Further, when the signal state (analog) in a certain detection segment 61 is confirmed, it can be determined that a short-circuit failure has occurred by detecting a detection amount exceeding the normal range.

Next, the features of the automatic door sensor 20 as a diagnostic support device for the optical sensor according to the embodiment and the modified example, the diagnostic support method for the optical sensor, the diagnostic support system, and the automatic door sensor 20 will be described.
The automatic door sensor 20 as a diagnostic support device for an optical sensor is provided so that light is projected from one light projecting element 21a to a plurality of detection segments 61 set at specific positions corresponding to each of the detection segments 61. It is a diagnostic support device for an optical sensor that acquires a signal from a light projecting unit 21 and a light receiving unit 22 as an optical sensor that receives the reflected light of the light by the light receiving element 22a, and includes a signal acquisition unit 23b and a determination unit 23c. .. The signal acquisition unit 23b acquires a signal corresponding to the light receiving state of the light receiving element 22a provided corresponding to each detection segment 61. The determination unit 23c determines whether or not the respective signals acquired by the signal acquisition unit 23b match. Thereby, the automatic door sensor 20 can support the diagnosis of the sensor failure.

Further, when the value of each of the signals acquired by the signal acquisition unit 23b is a value equal to or less than the first threshold value smaller than the predetermined reference value or a value equal to or higher than the second threshold value larger than the predetermined reference value, the determination unit 23c Is determined to match. Thereby, the automatic door sensor 20 can support the failure diagnosis in order to suppress the opening and closing of the automatic door 10 due to the failure of the light projecting element 21a.

Further, the determination unit 23c determines that the values match when the values of the respective signals acquired by the signal acquisition unit 23b are equal to or higher than a predetermined reference value. Thereby, the automatic door sensor 20 can support the failure diagnosis in order to suppress the opening and closing of the automatic door 10 due to the failure of the light projecting element 21a and the like.

Further, the failure diagnosis unit 23d diagnoses the failure of the light projecting element 21a when the determination unit 23c determines that the respective signals acquired by the signal acquisition unit 23b match. As a result, the automatic door sensor 20 can automatically identify and provide a specific failure location and failure content of the light projecting element 21a.

In the automatic door sensor 20 as a diagnostic support device for an optical sensor, light is projected onto a plurality of detection segments 61 from a light projecting element 21a provided corresponding to the plurality of detection segments 61, and all the projected light is emitted. It is a diagnostic support device for an optical sensor that acquires a signal from a light projecting unit 21 and a light receiving unit 22 as an optical sensor that receives reflected light by one light receiving element 22a, and includes a signal acquisition unit 23b and a determination unit 23c. The signal acquisition unit 23b acquires signals corresponding to the light projection status of the light projection element 21a provided for each detection segment 61. The determination unit 23c determines whether or not the respective signals acquired by the signal acquisition unit 23b match. Thereby, the automatic door sensor 20 can support the diagnosis of the sensor failure.

The failure diagnosis unit 23d diagnoses the failure of the light receiving element 22a when the determination unit 23c determines that the respective signals acquired by the signal acquisition unit 23b match. As a result, the automatic door sensor 20 can automatically identify and provide a specific failure location and failure content of the light receiving element 22a.

The storage unit 26 stores the result of the determination by the determination unit 23c. As a result, the automatic door sensor 20 can read out the determination result stored in the storage unit 26 by an external device such as the setting device 50, and make it aware of the failure of the light emitting element 21a and the light receiving element 22a.

The automatic door sensor 20 as a diagnostic support device for an optical sensor is provided so that light is projected from one light projecting element 21a to a plurality of detection segments 61 set at specific positions corresponding to each of the detection segments 61. It is a diagnostic support device for an optical sensor that acquires a signal from a light projecting unit 21 and a light receiving unit 22 as an optical sensor that receives the reflected light of the light by the light receiving element 22a, and includes a signal acquisition unit 23b and a determination unit 23c. .. The signal acquisition unit 23b acquires a signal corresponding to the light receiving state of the light receiving element 22a provided corresponding to each detection segment 61. The determination unit 23c determines whether the value of each of the signals acquired by the signal acquisition unit 23b is a value equal to or less than the first threshold value smaller than the predetermined reference value or a value equal to or higher than the second threshold value larger than the predetermined reference value. judge. Thereby, the automatic door sensor 20 can support the diagnosis of the sensor failure.

Further, in the diagnostic support method, light is projected from one light projecting element to a plurality of detection segments set at specific positions, and the reflected light of the light is emitted by a light receiving element provided corresponding to each detection segment. It is a diagnostic support method of an optical sensor that acquires a signal from a light projecting unit 21 and a light receiving unit 22 as an optical sensor that receives light, and includes a signal acquisition step and a determination step. The signal acquisition step acquires signals corresponding to the light receiving status of the light receiving element 22a provided for each detection segment 61. The determination step determines whether or not the respective signals acquired by the signal acquisition step match. According to this diagnosis support method, it is possible to support the diagnosis of sensor failure.

In the diagnosis support method, light is projected from the light projecting elements 21a provided corresponding to the plurality of detection segments 61 to the plurality of detection segments 61, and the reflected light of all the projected light is reflected by one light receiving element 22a. This is a diagnostic support method for an optical sensor that acquires a signal from a light projecting unit 21 and a light receiving unit 22 as an optical sensor that receives light in, and includes a signal acquisition step and a determination step. The signal acquisition step acquires signals corresponding to the light projection status of the light projection element 21a provided for each detection segment 61. The determination step determines whether or not the respective signals acquired by the signal acquisition step match. According to this diagnosis support method, it is possible to support the diagnosis of sensor failure.

Further, in the diagnostic support device of the optical sensor, light is projected from one light projecting element 21a to a plurality of detection segments 61 set at specific positions in the vicinity of the opening 11 of the building, and the light is projected for each detection segment 61. The light receiving element 22a provided in the above receives the reflected light of the light, and when it is determined from the signal corresponding to the light receiving state of the light receiving element 22a that a person or an object exists, an activation signal for opening the automatic door 10 is generated. It includes an automatic door sensor 20 to be generated, and a determination unit 23c for determining whether or not each signal corresponding to the light receiving state of the light receiving element 22a provided corresponding to each detection segment 61 matches. As a result, the optical sensor diagnosis support device can support the diagnosis of the sensor failure.

Further, in the diagnostic support device of the optical sensor, light is projected onto the plurality of detection segments 61 from the light projecting elements 21a provided corresponding to the plurality of detection segments 61 in the vicinity of the opening 11 of the building, and the light is projected. The reflected light of all the light is received by one light receiving element 22a, and a start signal for opening the automatic door 10 is generated when it is determined from the signal corresponding to the light receiving state of the light receiving element 22a that a person or an object exists. The automatic door sensor 20 is provided, and a determination unit 23c for determining whether or not the respective signals corresponding to the light projection status of the light projection element 21a provided corresponding to each detection segment 61 match. As a result, the optical sensor diagnosis support device can support the diagnosis of the sensor failure.

Further, in the automatic door system 100 as a diagnostic support system, light is projected from one light projecting element 21a to a plurality of detection segments 61 set at specific positions in the vicinity of the opening 11 of the building, and for each detection segment 61. The light receiving element 22a provided correspondingly receives the reflected light of the light, and activates the automatic door 10 to open the automatic door 10 when it is determined from the signal corresponding to the light receiving state of the light receiving element 22a that a person or an object exists. The automatic door sensor 20 that generates a signal, the determination unit 23c that determines whether or not the respective signals corresponding to the light reception status of the light receiving element provided corresponding to each detection segment match, and the determination unit 23c are used. A setting device 50 for acquiring a determination result is provided. As a result, the automatic door system 100 can acquire the determination result by the setting device 50 and know about the failure of the light projecting element 21a.

Further, in the automatic door system 100 as a diagnostic support system, light is projected onto the plurality of detection segments 61 from the light projecting elements 21a provided corresponding to the plurality of detection segments 61 in the vicinity of the opening 11 of the building. The reflected light of all the light is received by one light receiving element 22a, and when it is determined from the signal corresponding to the light receiving state of the light receiving element 22a that a person or an object exists, the automatic door 10 is started to open. The automatic door sensor 20 that generates a signal, the determination unit 23c that determines whether or not the respective signals corresponding to the light projection status of the light projection element 21a provided for each detection segment 61 match, and the determination unit A setting device 50 for acquiring a determination result according to 23c is provided. As a result, the automatic door system 100 can acquire the determination result by the setting device 50 and know about the failure of the light receiving element 22a.

Further, the automatic door sensor 20 includes a light emitting element 21a, a light receiving element 22a, an activation signal processing unit 23a, and a determination unit 23c. One light projecting element 21a projects light onto a plurality of detection segments 61 set at specific positions. The light receiving element 22a is provided corresponding to each detection segment 61 and receives the reflected light of the light. The start-up signal processing unit 23a generates a start-up signal for opening the automatic door 10 when it is determined that a person or an object exists from the signal corresponding to the light-receiving state of the light-receiving element 22a for each detection segment 61. The determination unit 23c determines whether or not the respective signals corresponding to the light receiving state of the light receiving element 22a provided corresponding to each detection segment 61 match. Thereby, the automatic door sensor 20 can support the diagnosis of the sensor failure.

Further, the automatic door sensor 20 includes a light emitting element 21a, a light receiving element 22a, an activation signal processing unit 23a, and a determination unit 23c. The light projecting element 21a is provided corresponding to the plurality of detection segments 61, and emits light to the plurality of detection segments 61. One light receiving element 22a receives the reflected light of all the light projected by the light projecting element 21a. The start-up signal processing unit 23a generates a start-up signal for opening the automatic door 10 when it is determined from the signal corresponding to the light-receiving state of the light-receiving element 22a that a person or an object exists. The determination unit 23c determines whether or not the signals corresponding to the light projection status of the light projection element 21a provided for each detection segment 61 match. Thereby, the automatic door sensor 20 can support the diagnosis of the sensor failure.

The above description has been made based on the embodiment of the present invention. It will be appreciated by those skilled in the art that these embodiments are exemplary and that various modifications and modifications are possible within the claims of the invention, and that such modifications and modifications are also within the claims of the present invention. It is about to be done. Therefore, the descriptions and drawings herein should be treated as exemplary rather than limiting.

10 automatic doors, 20 automatic door sensors (diagnosis support device),
21 Floodlight (optical sensor), 21a Floodlight,
22 Light receiving part (optical sensor), 22a light receiving element, 23b signal acquisition part,
23c Judgment unit, 23d Failure diagnosis unit, 26 Storage unit,
50 setters, 61 detection segments,
100 Automatic door system (diagnosis support system).

Claims

Light is projected from one light projecting element to a plurality of detection segments set at specific positions, and a signal is transmitted from an optical sensor that receives the reflected light of the light by a light receiving element provided corresponding to each detection segment. It is a diagnostic support device for the optical sensor to be acquired.
A signal acquisition unit that acquires a signal corresponding to the light receiving state of the light receiving element provided corresponding to each detection segment, and a signal acquisition unit.
A determination unit that determines whether or not each of the signals acquired by the signal acquisition unit matches.
A diagnostic support device for an optical sensor.
When the value of each of the signals acquired by the signal acquisition unit is a value equal to or less than a first threshold value smaller than a predetermined reference value or a value greater than or equal to the second threshold value than the predetermined reference value. The diagnostic support device for an optical sensor according to claim 1, which is determined to match the above.
The diagnostic support device for an optical sensor according to claim 1 or 2, wherein the determination unit determines that the values of the respective signals acquired by the signal acquisition unit match when the values are equal to or higher than a predetermined reference value.
Claims 1 to 3 include a failure diagnosis unit that diagnoses a failure of the light projecting element when the determination unit determines that the respective signals acquired by the signal acquisition unit match. The diagnostic support device for the optical sensor according to any one of the above items.
Light is projected onto the plurality of detection segments from the light projecting elements provided corresponding to the plurality of detection segments, and a signal is received from an optical sensor that receives the reflected light of all the projected light with one light receiving element. It is a diagnostic support device for the optical sensor to be acquired.
A signal acquisition unit that acquires a signal corresponding to the light projection status of the light projecting element provided corresponding to each detection segment, and a signal acquisition unit.
A determination unit that determines whether or not each of the signals acquired by the signal acquisition unit matches.
A diagnostic support device for an optical sensor.
The fifth aspect of claim 5 is characterized in that the determination unit includes a failure diagnosis unit that diagnoses a failure of the light receiving element when it is determined by the determination unit that the respective signals acquired by the signal acquisition unit match. Diagnostic support device for optical sensors.
The diagnostic support device for an optical sensor according to any one of claims 1 to 6, further comprising a storage unit that stores the result of determination by the determination unit.
Light is projected from one light projecting element to a plurality of detection segments set at specific positions, and a signal is transmitted from an optical sensor that receives the reflected light of the light by a light receiving element provided corresponding to each detection segment. It is a diagnostic support device for the optical sensor to be acquired.
A signal acquisition unit that acquires a signal corresponding to the light receiving state of the light receiving element provided corresponding to each detection segment, and a signal acquisition unit.
A determination unit that determines whether or not the value of each of the signals acquired by the signal acquisition unit is a value equal to or less than a first threshold value smaller than a predetermined reference value or a value greater than or equal to the second threshold value than the predetermined reference value. An optical sensor diagnostic support device characterized by being provided with.
Light is projected from one light projecting element to a plurality of detection segments set at specific positions, and a signal is transmitted from an optical sensor that receives the reflected light of the light by a light receiving element provided corresponding to each detection segment. It is a diagnostic support method for the optical sensor to be acquired.
A signal acquisition step for acquiring a signal corresponding to the light receiving state of the light receiving element provided corresponding to each detection segment, and a signal acquisition step.
A determination step for determining whether or not each of the signals acquired by the signal acquisition step matches.
A diagnostic support method for an optical sensor, which comprises.
Light is projected onto the plurality of detection segments from the light projecting elements provided corresponding to the plurality of detection segments, and a signal is received from an optical sensor that receives the reflected light of all the projected light with one light receiving element. It is a diagnostic support method for the optical sensor to be acquired.
A signal acquisition step for acquiring a signal corresponding to the light projection status of the light projecting element provided corresponding to each detection segment, and a signal acquisition step.
A determination step for determining whether or not each of the signals acquired by the signal acquisition step matches.
A diagnostic support method for an optical sensor, which comprises.
Light is projected from one light projecting element to a plurality of detection segments set at specific positions in the vicinity of the building opening, and the reflected light of the light is received by a light receiving element provided corresponding to each detection segment. An automatic door sensor that generates an activation signal for opening an automatic door when it is determined that a person or an object exists from a signal corresponding to the light receiving state of the light receiving element.
A determination unit for determining whether or not each signal corresponding to the light receiving state of the light receiving element, which is provided corresponding to each detection segment, matches.
A diagnostic support device for an optical sensor.
Light is projected onto the plurality of detection segments from the light projecting elements provided corresponding to the plurality of detection segments in the vicinity of the building opening, and the reflected light of all the projected light is received by one light receiving element. An automatic door sensor that generates an activation signal for opening an automatic door when it is determined that a person or an object exists from a signal corresponding to the light receiving state of the light receiving element.
A determination unit for determining whether or not each signal corresponding to the light projection status of the light projecting element, which is provided corresponding to each detection segment, matches.
A diagnostic support device for an optical sensor.
Light is projected from one light projecting element to a plurality of detection segments set at specific positions in the vicinity of the building opening, and the reflected light of the light is received by a light receiving element provided corresponding to each detection segment. An automatic door sensor that generates an activation signal for opening an automatic door when it is determined that a person or an object exists from a signal corresponding to the light receiving state of the light receiving element.
A determination unit for determining whether or not each signal corresponding to the light receiving state of the light receiving element, which is provided corresponding to each detection segment, matches.
A setting device that acquires the judgment result by the judgment unit, and
A diagnostic support system characterized by being equipped with.
Light is projected onto the plurality of detection segments from the light projecting elements provided corresponding to the plurality of detection segments in the vicinity of the building opening, and the reflected light of all the projected light is received by one light receiving element. An automatic door sensor that generates an activation signal for opening an automatic door when it is determined that a person or an object exists from a signal corresponding to the light receiving state of the light receiving element.
A determination unit for determining whether or not each signal corresponding to the light projection status of the light projecting element, which is provided corresponding to each detection segment, matches.
A setting device that acquires the judgment result by the judgment unit, and
A diagnostic support system characterized by being equipped with.
A single light projecting element that projects light to multiple detection segments set at specific positions,
A light receiving element that is provided corresponding to each detection segment and receives the reflected light of the light, and a light receiving element.
A start-up signal processing unit that generates a start-up signal for opening an automatic door when it is determined from a signal corresponding to the light-receiving state of the light-receiving element that a person or an object exists.
A determination unit for determining whether or not each signal corresponding to the light receiving state of the light receiving element, which is provided corresponding to each detection segment, matches.
An automatic door sensor characterized by being equipped with.
A light projecting element that is provided corresponding to a plurality of detection segments and emits light to the plurality of detection segments.
A light receiving element that receives the reflected light of all the light projected by the light projecting element, and
A start-up signal processing unit that generates a start-up signal for opening an automatic door when it is determined from a signal corresponding to the light-receiving state of the light-receiving element that a person or an object exists.
A determination unit for determining whether or not each signal corresponding to the light projection status of the light projecting element, which is provided corresponding to each detection segment, matches.
An automatic door sensor characterized by being equipped with.