Man conveyor

Abstract

This product provides a man-conveyor system that can identify the nature of abnormalities in on / off signals. [Solution] The man conveyor includes a first detection unit that outputs a first on / off signal that repeatedly switches on and off depending on the change in distance between a rotating gear and the teeth of the rotating gear, a second detection unit that outputs a second on / off signal that repeatedly switches on and off depending on the change in distance between the rotating gear and the teeth of the gear, a processing unit that acquires the outputted first on / off signal and second on / off signal, and an output unit that outputs information. The processing unit determines whether the signal is normal or abnormal based on the acquired first on / off signal and second on / off signal, and the output unit outputs information distinguished by the type of abnormality when the processing unit determines that it is abnormal.

Description

Technical Field

[0001] This specification relates to a man conveyor.

Background Art

[0002] Conventionally, for example, a man conveyor includes a rotating gear, a first detection unit, and a second detection unit that detect the rotation of the gear (for example, Patent Document 1). The first detection unit and the second detection unit output an on-off signal that repeats on and off according to a change in the distance from the teeth of the rotating gear.

[0003] In the man conveyor according to Patent Document 1, a processing unit determines whether the detection unit appropriately outputs an on-off signal based on the on-off signals of the first detection unit and the second detection unit, and an output unit outputs the result of the determination (normal or abnormal). By the way, when the on-off signal is determined to be abnormal, the content of the response changes depending on the content of the abnormality.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the problem is to provide a man conveyor that can grasp the content of an abnormality in an on-off signal.

Means for Solving the Problems

[0006] The man conveyor a rotating gear, a first detection unit that outputs a first on-off signal that repeats on and off according to a change in the distance from the teeth of the rotating gear, A second detection unit outputs a second on / off signal that repeatedly switches on and off depending on the change in distance from the teeth of the rotating gear, A processing unit that acquires the outputted first on / off signal and the second on / off signal, It comprises an output unit that outputs information, The processing unit determines whether the signal is normal or abnormal based on the acquired first on / off signal and second on / off signal. The output unit outputs information, distinguishing it according to the nature of the abnormality, when the processing unit determines that an abnormality has occurred. [Brief explanation of the drawing]

[0007] [Figure 1] Schematic diagram of a man conveyor according to one embodiment [Figure 2] Enlarged view of area II in Figure 1 [Figure 3] Control block diagram of a man conveyor according to the same embodiment. [Figure 4] Enlarged view of area IV in Figure 1 [Figure 5] This figure shows the on / off signals of the detection unit according to the same embodiment. [Figure 6] List of abnormalities under the same embodiment [Figure 7] A diagram showing the on / off signals of the detection unit according to another embodiment. [Modes for carrying out the invention]

[0008] In each drawing, the dimensions of components may be enlarged or reduced from their actual dimensions for the sake of clarity, and the dimensional ratios between drawings may not be consistent. Furthermore, in each drawing, some components may be omitted for the sake of clarity.

[0009] Terms including ordinal numbers such as "1st," "2nd," etc., are used to describe various components, but these terms are used solely for the purpose of distinguishing one component from others, and the components are not particularly limited by these terms. Furthermore, the number of components including ordinal numbers is not particularly limited; for example, there may be only one. Also, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0010] The following description will explain one embodiment of the man conveyor with reference to Figures 1 to 6. Note that the following embodiment is provided as an example to aid in understanding the configuration of the man conveyor and is not intended to limit the configuration of the man conveyor.

[0011] As shown in Figure 1, the man conveyor 1 may include, for example, a structure 2 installed on the building frame, a transport section 3 for transporting people (passengers), a pair of railing sections 4 (only one is shown in Figure 1) arranged to sandwich the transport section 3 in a first direction D1, a drive section 5 for driving the transport section 3 and the railing sections 4, and a processing section 6 for controlling the entire device.

[0012] In each figure, the first direction D1 is the first transverse direction (also called the "width direction") D1, which is parallel to the horizontal direction; the second direction D2 is the second transverse direction (also called the "front-back direction") D2, which is parallel to the horizontal direction and perpendicular to the first transverse direction D1; and the third direction D3 is the vertical direction D3, which is perpendicular to both the first transverse direction D1 and the second transverse direction D2.

[0013] Furthermore, the inside of the first lateral direction D1 refers to the side of the man conveyor 1 closer to the center of the first lateral direction D1, and the outside of the first lateral direction D1 refers to the side of the man conveyor 1 further from the center of the first lateral direction D1. Similarly, the inside of the second lateral direction D2 refers to the side of the man conveyor 1 closer to the center of the second lateral direction D2, and the outside of the second lateral direction D2 refers to the side of the man conveyor 1 further from the center of the second lateral direction D2.

[0014] The man conveyor 1 according to this embodiment is an escalator with a stepped tread surface for transporting people, but it is not limited to such a configuration. For example, the man conveyor 1 may be a moving walkway (a moving path) with a flat tread surface for transporting people.

[0015] The conveying unit 3 may include, for example, as in this embodiment, an annular running part 3a that rotates and runs by being driven by a driving unit 5, and a plurality of steps 3b that are connected to the running part 3a and run together with the running part 3a and have a tread surface for people to ride on. Although not particularly limited, the running part 3a may be, for example, a roller chain.

[0016] Also, for example, a pair of running parts 3a may be provided apart in the first lateral direction D1, and a plurality of steps 3b may be arranged between the pair of running parts 3a, 3a. And the steps 3b may be rotatably connected to the respective running parts 3a about the first lateral direction D1 as an axis.

[0017] The driving unit 5 may include, for example, as in this embodiment, a driving source 5a, a first rotating part 5b that rotates by the driving of the driving source 5a, a rotatable second rotating part 7, an annular transmission part 5c that is wound around the first rotating part 5b and the second rotating part 7 to transmit the driving of the first rotating part 5b to the second rotating part 7, a third rotating part 5d around which the first end of the running part 3a in the second lateral direction D2 is wound and that rotates integrally with the second rotating part 7, and a winding part 5e that supports the second end of the running part 3a in the second lateral direction D2.

[0018] Thereby, the steps 3b are reversed by the third rotating part 5d and also by the winding part 5e. Although not particularly limited, the driving source 5a may be, for example, a motor. Also, although not particularly limited, the first to third rotating parts 5b, 7, 5d may be, for example, gears (e.g., sprockets). Also, although not particularly limited, the winding part 5e may be, for example, a guide material that guides the running part 3a to reverse, or may be, for example, a rotating material (e.g., a sprocket) around which the running part 3a is wound.

[0019] The railing part 4 may include, for example, an annular handrail belt 4a that rotates and travels, a railing main body part 4b that supports the handrail belt 4a, and a cover part 4c that covers the lower part of the railing main body part 4b. For example, the handrail belt 4a travels by the drive of the drive part 5, and the travel of the handrail belt 4a may be synchronized with the travel in step 3b.

[0020] The structure 2 may include, for example, machine rooms 2a, 2a arranged at each end in the second lateral direction D2 as in this embodiment. Also, the structure 2 may be, for example, a truss structure or a frame structure composed of a plurality of frame members.

[0021] The man conveyor 1 may include, for example, a floor plate 8 attached to the structure 2 so as to cover the machine room 2a from above as in this embodiment. Thereby, the floor plate 8 constitutes boarding and alighting parts 1a arranged at each end in the second lateral direction D2 of the conveying part 3 for boarding and alighting the conveying part 3.

[0022] As shown in FIG. 2, the man conveyor 1 includes a first detection part 11 and a second detection part 12 arranged on the outer periphery of the gear 7. Also, the man conveyor 1 may include, for example, a support part 13 that supports the detection parts 11, 12 and a fixing means 14 that fixes the detection parts 11, 12 to the support part 13 as in this embodiment.

[0023] Thereby, the detection parts 11, 12 are arranged in the vicinity of the outer peripheral part of the gear 7. For example, the support part 13 may be fixed to the structure 2 (see FIG. 1), and the positions of the detection parts 11, 12 with respect to the gear 7 may be changeable by the fixing means 14.

[0024] The detection units 11 and 12 then output an on / off signal that alternates between on and off depending on the change in distance between them and the teeth 7a of the rotating gear 7. Specifically, the detection units 11 and 12 output an on / off signal that switches between on and off as the gear 7 rotates and the teeth 7a of the gear 7 move closer to or further away from it. In this way, the detection units 11 and 12 detect the rotation of the gear 7.

[0025] The detection units 11 and 12 are not particularly limited, but for example, as in this embodiment, they may be proximity sensors that detect the teeth 7a, or they may be photoelectric sensors that detect the teeth 7a, or they may be contact sensors that detect the teeth 7a. In this embodiment, the detection units 11 and 12 output an ON signal when the teeth 7a of the gear 7 approach and an OFF signal when the teeth 7a of the gear 7 move away.

[0026] Furthermore, in this embodiment, the detection units 11 and 12 are configured to detect the rotation of the second rotating part 7, which is a gear 7, but the configuration is not limited to this. The detection units 11 and 12 may, for example, be configured to detect the rotation of the first rotating part 5b, which is a gear, or they may be configured to detect the rotation of the third rotating part 5d, which is a gear.

[0027] As shown in Figure 3, the man conveyor 1 may include, for example, an input unit 15 into which each piece of information (data) is input, and an output unit 16 that outputs each piece of information. The input unit 15 is not particularly limited, but may be, for example, a switch (push button switch, select switch, etc.), a touch panel, etc.

[0028] The processing unit 6 may, for example, include an acquisition unit 6a that acquires information from each of the parts 11, 12, and 15, a storage unit 6b that stores the information, an arithmetic unit 6c that performs calculations on the information, and a control unit 6d that controls each of the parts 5 and 16, as in this embodiment. The processing unit 6 may also be a computer equipped with, for example, a processor such as a CPU and an MPU (e.g., the arithmetic unit 6c and the control unit 6d), memory such as ROM and RAM (e.g., the acquisition unit 6a and the storage unit 6b), various interfaces, etc.

[0029] As a result, the processor executes the program stored in memory, and the software and hardware work together to realize each part 6a to 6d of the processing unit 6. The processing unit 6 may be composed of, for example, software circuits, or for example, hardware circuits, or for example, a combination of software circuits and hardware circuits.

[0030] Furthermore, the processing unit 6 may consist of, for example, a single device, or it may consist of, for example, multiple devices that can communicate with each other. Specifically, each part 6a to 6d of the processing unit 6 may be provided in, for example, a single device, or it may be distributed and provided in, for example, multiple devices that can communicate with each other.

[0031] As shown in Figures 3 and 4, the output unit 16 may include, for example, first and second display units 16a and 16b for displaying information (e.g., electronic display boards, indicator lights). The output unit 16 may also include, for example, a sound-emitting unit for emitting information as sound (e.g., a buzzer, a speaker), or a signal output unit for outputting signals to an external device (e.g., a central monitoring panel).

[0032] As the gear 7 rotates, the detection units 11 and 12 output an on / off signal that repeatedly switches between on and off, as shown in Figure 5. For example, as shown in Figure 5, the first detection unit 11 and the second detection unit 12 may be arranged such that the on / off switching timing of the first on / off signal output by the first detection unit 11 and the on / off switching timing of the second on / off signal output by the second detection unit 12 are different.

[0033] As a result, there are four possible states: a first state where both the first and second on / off signals are on; a second state where the first on / off signal is on and the second on / off signal is off; a third state where both the first and second on / off signals are off; and a fourth state where the first on / off signal is off and the second on / off signal is on.

[0034] In Figure 5, times T1 and T2 represent one period T1 and T2 in the on / off signal. The one period T1 and T2 of the on / off signal is the sum of the on-length (first on-time T1a, second on-time T2a) and the off-length (first off-time T1b, second off-time T2b).

[0035] Furthermore, the processing unit 6 (see Figure 3) may calculate the rotational status of the gear 7 based on, for example, the first on / off signal and the second on / off signal. Specifically, for example, the processing unit 6 may calculate the rotational speed and rotational direction of the gear 7 based on the first on / off signal and the second on / off signal.

[0036] Furthermore, the processing unit 6 may calculate the direction of rotation based on whether the state following the first state is the second state or the fourth state. Additionally, during the operation of the man conveyor 1, if the processing unit 6 determines, for example, that step 3b is moving in reverse based on the calculated direction of rotation, it may control the drive unit 5 to abnormally stop the movement of step 3b.

[0037] Alternatively, during the operation of the man conveyor 1, the processing unit 6 may, for example, control the drive unit 5 to abnormally stop the movement of step 3b if the on time T1a, T2a or off time T1b, T2b exceeds an abnormal value. The abnormal value is not particularly limited, but it may be, for example, 600% to 800% of one cycle T1, T2 of the on / off signal (for example, it may be greater than the first to fourth thresholds described later).

[0038] However, if the positions of the detection units 11 and 12 (see Figure 2) are not appropriate with respect to the gear 7 (see Figure 2), or if the detection units 11 and 12 are malfunctioning (for example, outputting only an ON signal (or OFF signal) even if the position is appropriate), the detection units 11 and 12 will not be able to output the ON / OFF signal properly in accordance with the rotation of the gear 7.

[0039] In response, the man conveyor 1 performs signal determination control by the processing unit 6 to determine whether the on / off signals of the detection units 11 and 12 are appropriate or not (normal or abnormal). Although not particularly limited, for example, the processing unit 6 may perform signal determination control when instruction information for signal determination control is input to the input unit 15.

[0040] Furthermore, when signal judgment control is being performed, the rotational speed of gear 7 (travel speed in step 3b) remains constant. Also, signal judgment control may be performed, for example, only for the period during which gear 7 completes one or more rotations, or for example, only for the period during which step 3b completes one or more rotations.

[0041] The output unit 16 then outputs the determination result of the processing unit 6. For example, as in this embodiment, the output unit 16 may be configured to output only one piece of information. Although not particularly limited, for example, as in this embodiment, the first display unit 16a may be a 7-segment display.

[0042] Here, the signal determination control method for man conveyor 1 will be explained with reference to Figures 5 and 6. Note that the following method is provided as an example to aid in understanding the control method of man conveyor 1, and is not intended to limit the control method of man conveyor 1.

[0043] <1st upper limit error> First, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the first on-time T1a is greater than or equal to the first upper limit value, which is a first upper limit abnormality. The first upper limit value is not particularly limited, but for example, it may be smaller than one cycle T1 of the first on / off signal and may be 70% to 90% of that one cycle T1.

[0044] Furthermore, as in this embodiment, the first display unit 16a may display "1" to indicate a first upper limit abnormality. In this way, when a first upper limit abnormality is output, it can be recognized that the distance between the first detection unit 11 and the gear 7 should be increased. This allows for, for example, the first detection unit 11 to be moved away from the gear 7.

[0045] <Second upper limit error> Furthermore, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal if the first off time T1b is greater than or equal to the second upper limit value, which is a second upper limit abnormality. The second upper limit value is not particularly limited, but for example, it may be smaller than one cycle T1 of the first on / off signal and may be 70% to 90% of that one cycle T1.

[0046] Furthermore, as in this embodiment, the first display unit 16a may display "2" to indicate a second upper limit abnormality. In this way, when a second upper limit abnormality is output, it is possible to recognize that the distance between the first detection unit 11 and the gear 7 should be reduced. This allows for, for example, the first detection unit 11 to be moved closer to the gear 7.

[0047] <3rd upper limit abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second on-time T2a is greater than or equal to the third upper limit value, which is a third upper limit abnormality. The third upper limit value is not particularly limited, but for example, it may be smaller than one cycle T2 of the second on / off signal and be 70% to 90% of that one cycle T2.

[0048] Furthermore, as in this embodiment, the first display unit 16a may display "3" to indicate a third upper limit abnormality. In this way, when a third upper limit abnormality is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be increased. This allows for, for example, taking action to move the second detection unit 12 away from the gear 7.

[0049] <4th upper limit abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second off time T2b is greater than or equal to the fourth upper limit value, which is a fourth upper limit abnormality. The fourth upper limit value is not particularly limited, but for example, it may be smaller than one cycle T2 of the second on / off signal and be 70% to 90% of that one cycle T2.

[0050] Furthermore, as in this embodiment, the first display unit 16a may display "4" to indicate a fourth upper limit abnormality. In this way, when a fourth upper limit abnormality is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be reduced. This allows for, for example, taking action to move the second detection unit 12 closer to the gear 7.

[0051] The processing unit 6 may also be configured to determine an upper limit abnormality if, for example, each time point T1a, T1b, T2a, and T2b exceeds the upper limit at least once. Alternatively, the processing unit 6 may be configured to determine an upper limit abnormality if, for example, the average value of times T1a, T1b, T2a, and T2b exceeds the upper limit.

[0052] <1st ratio abnormality> Furthermore, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio of the first on time T1a to the first off time T1b (T1a / T1b) is greater than or equal to a first ratio value, which is a first ratio abnormality. The first ratio value is not particularly limited, but may be, for example, 200% to 250%.

[0053] Furthermore, as in this embodiment, the first display unit 16a may display "5" to indicate a first ratio anomaly. In this way, when a first ratio anomaly is output, it can be determined that the distance between the first detection unit 11 and the gear 7 should be increased. This allows for, for example, taking action to move the first detection unit 11 away from the gear 7.

[0054] The processing unit 6 may also be configured to determine a first ratio anomaly if, for example, the ratio of the maximum value of the first on-time T1a to the minimum value of the first off-time T1b (T1a / T1b) is greater than or equal to a first ratio value. Alternatively, the processing unit 6 may also be configured to determine a first ratio anomaly if, for example, the ratio of the average value of the first on-time T1a to the average value of the first off-time T1b (T1a / T1b) is greater than or equal to a first ratio value.

[0055] <Second ratio abnormality> Furthermore, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and this is a second ratio abnormality, if the ratio of the first off time T1b to the first on time T1a (T1b / T1a) is greater than or equal to the second ratio value. The second ratio value is not particularly limited, but may be, for example, 200% to 250%.

[0056] Furthermore, as in this embodiment, the first display unit 16a may display "6" to indicate a second ratio anomaly. In this way, when a second ratio anomaly is output, it can be determined that the distance between the first detection unit 11 and the gear 7 should be reduced. This allows for, for example, taking action to move the first detection unit 11 closer to the gear 7.

[0057] The processing unit 6 may also be configured to determine a second ratio abnormality if, for example, the ratio of the maximum value of the first off-time T1b to the minimum value of the first on-time T1a (T1b / T1a) is greater than or equal to the second ratio value. Alternatively, the processing unit 6 may also be configured to determine a second ratio abnormality if, for example, the ratio of the average value of the first on-time T1a to the average value of the first off-time T1b (T1b / T1a) is greater than or equal to the second ratio value.

[0058] <Third ratio abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio of the second on time T2a to the second off time T2b (T2a / T2b) is greater than or equal to the third ratio value, which is a third ratio abnormality. The third ratio value is not particularly limited, but may be, for example, 200% to 250%.

[0059] Furthermore, as in this embodiment, the first display unit 16a may display "7" to indicate a third ratio anomaly. In this way, when a third ratio anomaly is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be increased. This allows for, for example, taking action to move the second detection unit 12 away from the gear 7.

[0060] The processing unit 6 may also be configured to determine a third ratio abnormality if, for example, the ratio of the maximum value of the second on time T2a to the minimum value of the second off time T2b (T2a / T2b) is greater than or equal to the third ratio value. Alternatively, the processing unit 6 may also be configured to determine a third ratio abnormality if, for example, the ratio of the average value of the second on time T2a to the average value of the second off time T2b (T2a / T2b) is greater than or equal to the third ratio value.

[0061] <4th ratio abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio of the second off time T2b to the second on time T2a (T2b / T2a) is greater than or equal to the fourth ratio value, which is a fourth ratio abnormality. The fourth ratio value is not particularly limited, but may be, for example, 200% to 250%.

[0062] Furthermore, as in this embodiment, the first display unit 16a may display "8" to indicate a fourth ratio anomaly. In this way, when a fourth ratio anomaly is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be reduced. This allows for, for example, taking action to move the second detection unit 12 closer to the gear 7.

[0063] Furthermore, the processing unit 6 may be configured to determine a fourth ratio abnormality if, for example, the ratio of the maximum value of the second off time T2b to the minimum value of the second on time T2a (T2b / T2a) is greater than or equal to the fourth ratio value. Alternatively, the processing unit 6 may be configured to determine a fourth ratio abnormality if, for example, the ratio of the average value of the second on time T2a to the average value of the second off time T2b (T2b / T2a) is greater than or equal to the fourth ratio value.

[0064] <1st lower limit abnormality> Furthermore, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, or a first lower limit abnormality, when the first on time T1a is less than or equal to the first lower limit value. The first lower limit value is not particularly limited, but for example, it may be smaller than one cycle T1 of the first on / off signal and may be 10% to 20% of the said one cycle T1.

[0065] Furthermore, as in this embodiment, the first display unit 16a may display "A" indicating a first lower limit abnormality. In this way, when a first lower limit abnormality is output, it can be determined that the distance between the first detection unit 11 and the gear 7 should be reduced. This allows for, for example, taking action to bring the first detection unit 11 closer to the gear 7.

[0066] <Second lower limit abnormality> Furthermore, the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, i.e., a second lower limit abnormality, when the first off time T1b is less than or equal to the second lower limit. The second lower limit is not particularly limited, but may be, for example, smaller than one cycle T1 of the first on / off signal, and may be 10% to 20% of that one cycle T1.

[0067] Furthermore, as in this embodiment, the first display unit 16a may display "b" indicating a second lower limit abnormality. In this way, when a second lower limit abnormality is output, it can be determined that the distance between the first detection unit 11 and the gear 7 should be increased. This allows for, for example, taking action to move the first detection unit 11 away from the gear 7.

[0068] <3rd lower limit abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, i.e., a third lower limit abnormality, when the second on-time T2a is less than or equal to the third lower limit. The third lower limit is not particularly limited, but for example, it may be smaller than one cycle T2 of the second on / off signal and may be 10% to 20% of that one cycle T2.

[0069] Furthermore, as in this embodiment, the first display unit 16a may display "c" indicating a third lower limit abnormality. In this way, when a third lower limit abnormality is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be reduced. This allows for, for example, the second detection unit 12 to be moved closer to the gear 7.

[0070] <4th lower limit abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, i.e., a fourth lower limit abnormality, when the second off time T2b is less than or equal to the fourth lower limit. The fourth lower limit is not particularly limited, but may be, for example, smaller than one cycle T2 of the second on / off signal, and may be 10% to 20% of that one cycle T2.

[0071] Furthermore, as in this embodiment, the first display unit 16a may display "d" indicating a fourth lower limit abnormality. In this way, when a fourth lower limit abnormality is output, it can be determined that the distance between the second detection unit 12 and the gear 7 should be increased. This allows for, for example, the second detection unit 12 to be moved away from the gear 7.

[0072] The processing unit 6 may also be configured to determine a lower limit abnormality if, for example, each time point T1a, T1b, T2a, and T2b is below the lower limit value at least once. Alternatively, the processing unit 6 may be configured to determine a lower limit abnormality if, for example, the average value of times T1a, T1b, T2a, and T2b is below the lower limit value.

[0073] <First Off Anomaly> Furthermore, the processing unit 6 determines that the first detection unit 11 is abnormal if the first off time T1b is greater than or equal to a second threshold which is greater than one period T1 of the first on / off signal. The second threshold is not particularly limited, but for example, it may be 300% to 400% of one period T1 of the first on / off signal.

[0074] Furthermore, as in this embodiment, the first display unit 16a may display "E" indicating a first off-abnormality. In this way, when a first off-abnormality is output, it is possible to understand that the distance between the first detection unit 11 and the gear 7 should be reduced, or that there is a possibility of a malfunction in the first detection unit 11 itself. This allows for countermeasures such as moving the first detection unit 11 closer to the gear 7 or replacing the first detection unit 11.

[0075] <Second Off Anomaly> Furthermore, the processing unit 6 determines that the second detection unit 12 is abnormal if the second off time T2b is greater than or equal to a fourth threshold that is greater than one period T2 of the second on / off signal. The fourth threshold is not particularly limited, but for example, it may be 300% to 400% of one period T2 of the second on / off signal.

[0076] Furthermore, as in this embodiment, the first display unit 16a may display "F" indicating a second off-abnormality. In this way, when a second off-abnormality is output, it is possible to understand that the distance between the second detection unit 12 and the gear 7 should be reduced, or that there is a possibility of a malfunction in the second detection unit 12 itself. This allows for countermeasures such as moving the second detection unit 12 closer to the gear 7 or replacing the second detection unit 12.

[0077] <First ON Anomaly> Furthermore, the processing unit 6 determines that the first detection unit 11 is abnormal if the first ON time T1a is greater than or equal to a first threshold that is greater than one period T1 of the first ON / OFF signal. The first threshold is not particularly limited, but for example, it may be 300% to 400% of one period T1 of the first ON / OFF signal.

[0078] Furthermore, as in this embodiment, the first display unit 16a may display "H" to indicate a first ON abnormality. In this way, when a first ON abnormality is output, it is possible to understand that the distance between the first detection unit 11 and the gear 7 should be increased, or that there is a possibility of a malfunction in the first detection unit 11 itself. This allows for countermeasures such as moving the first detection unit 11 away from the gear 7 or replacing the first detection unit 11.

[0079] <Second ON Anomaly> Furthermore, the processing unit 6 determines that the second detection unit 12 is abnormal if the second ON time T2a is greater than or equal to a third threshold which is greater than one period T2 of the second ON / OFF signal. The third threshold is not particularly limited, but for example, it may be 300% to 400% of one period T2 of the second ON / OFF signal.

[0080] Furthermore, as in this embodiment, the first display unit 16a may display "J" to indicate a second ON abnormality. In this way, when a second ON abnormality is output, it is possible to understand that the distance between the second detection unit 12 and the gear 7 should be increased, or that there is a possibility of a malfunction in the second detection unit 12 itself. This allows for countermeasures such as moving the second detection unit 12 away from the gear 7 or replacing the second detection unit 12.

[0081] The processing unit 6 may also be configured to determine an abnormality (on abnormality, off abnormality) if, for example, each of the times T1a, T1b, T2a, and T2b exceeds a threshold at least once. Alternatively, the processing unit 6 may be configured to determine an abnormality (on abnormality, off abnormality) if, for example, the average value of times T1a, T1b, T2a, and T2b exceeds a threshold.

[0082] Thus, if at least one of the first ON abnormality, first OFF abnormality, second ON abnormality, and second OFF abnormality is output, it can be understood that the abnormality is not due to the position of the detection units 11 and 12 relative to the gear 7, but rather to an abnormality in the detection units 11 and 12 themselves. This allows for, for example, checking not only the position of the detection units 11 and 12 relative to the gear 7, but also checking the detection units 11 and 12 themselves.

[0083] Furthermore, the first ON abnormality, first OFF abnormality, second ON abnormality, and second OFF abnormality are output with higher priority than other abnormalities. This makes it possible to reliably determine that the abnormality is not due to the position of the detection units 11 and 12 relative to the gear 7, but rather to an abnormality in the detection units 11 and 12 themselves.

[0084] While not particularly limited, for example, the output unit 16 (first display unit 16a) may be configured to output (display) only the single most important abnormal information. Alternatively, for example, the output unit 16 (first display unit 16a) may be configured to output (display) the abnormal information in order of priority.

[0085] While not particularly limited, in this embodiment, for example, the priority of each abnormality increases in the order of "Priority" "1", "2", "3", and "4" in Figure 6. Also, while not particularly limited, in this embodiment, for example, the priority of each abnormality with the same priority number increases in the order from bottom to top in Figure 6. For example, in the case of an abnormality with "Priority" "1", the priority increases in the order of 2nd ON abnormality, 1st ON abnormality, 2nd OFF abnormality, and 1st OFF abnormality.

[0086] Furthermore, the processing unit 6 determines that the position of the detection units 11 and 12 relative to the gear 7 is normal if the on / off signal does not correspond to any of the abnormalities (16 types of abnormalities in this embodiment). Then, for example, as in this embodiment, the first display unit 16a may display "0" to indicate normal. This process continues for the detection units 11 and 12 until a normal output is generated.

[0087] In this way, information on each abnormality (16 types of abnormalities in this embodiment) is distinguished and output, making it possible to understand the nature of the abnormality in the on / off signal. Therefore, for example, it is possible to quickly understand the response to an abnormality and respond to the abnormality promptly.

[0088] [1] Based on the above, the man conveyor 1 is as in this embodiment. A rotating gear 7, A first detection unit 11 outputs a first on / off signal that repeatedly switches on and off depending on the change in distance from the teeth 7a of the rotating gear 7, A second detection unit 12 outputs a second on / off signal that repeatedly switches on and off depending on the change in distance from the teeth 7a of the rotating gear 7, A processing unit 6 that acquires the outputted first on / off signal and the second on / off signal, It comprises an output unit 16 that outputs information, The processing unit 6 determines whether the signal is normal or abnormal based on the acquired first on / off signal and second on / off signal. The output unit 16 outputs information, distinguishing it according to the nature of the abnormality, when the processing unit 6 determines that an abnormality has occurred. This configuration is preferable.

[0089] With this configuration, the processing unit 6 determines whether the signal is normal or abnormal based on the first on / off signal and the second on / off signal. If the processing unit 6 determines that the signal is abnormal, the output unit 16 outputs information categorized by the nature of the abnormality. This makes it possible to understand the nature of the abnormality in the on / off signal.

[0090] [2] Furthermore, in the man conveyor 1 described in [1] above, as in this embodiment, The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal if the first on-time T1a, which is the on-length of the first on-off signal, is greater than or equal to a first upper limit abnormality. The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the first off time T1b, which is the off length of the first on / off signal, is greater than or equal to the second upper limit value, and the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second on-time T2a, which is the on-length of the second on-off signal, is greater than or equal to the third upper limit value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second off time T2b, which is the off length of the second on / off signal, is greater than or equal to the fourth upper limit value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The output unit 16 distinguishes between the first upper limit abnormality, the second upper limit abnormality, the third upper limit abnormality, and the fourth upper limit abnormality and outputs them. This configuration is preferable.

[0091] With this configuration, when the output unit 16 outputs a first upper limit abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, increased). Furthermore, when the output unit 16 outputs a second upper limit abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, decreased).

[0092] Furthermore, when the output unit 16 outputs a third upper limit abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, increased). Also, when the output unit 16 outputs a fourth upper limit abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, decreased).

[0093] [3] Furthermore, in the man conveyor 1 described in [1] or [2] above, as in this embodiment, The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the first on-time T1a, which is the on-length of the first on-off signal, is below a first lower limit value, and the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and a first lower limit abnormality occurs. The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the first off time T1b, which is the off length of the first on / off signal, is below the second lower limit value, and the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and the second lower limit abnormality occurs. The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second on-time T2a, which is the on-length of the second on-off signal, is below the third lower limit, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the second off time T2b, which is the off length of the second on / off signal, is below the fourth lower limit value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The output unit 16 distinguishes between the first lower limit abnormality, the second lower limit abnormality, the third lower limit abnormality, and the fourth lower limit abnormality and outputs accordingly. This configuration is preferable.

[0094] With this configuration, when the output unit 16 outputs a first lower limit abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, decreased). Also, when the output unit 16 outputs a second lower limit abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, increased).

[0095] Furthermore, when the output unit 16 outputs a third lower limit abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, decreased). Also, when the output unit 16 outputs a fourth lower limit abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, increased).

[0096] [4] Furthermore, in any one of the man conveyors 1 described in [1] to [3] above, as in this embodiment, The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio (T1a / T1b) of the first on-time T1a, which is the on-time of the first on-off signal, to the first off-time T1b, which is the off-time of the first on-off signal, is greater than or equal to a first ratio value, then the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and a first ratio abnormality occurs. The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio of the first off time T1b to the first on time T1a (T1b / T1a) is greater than or equal to the second ratio value, and the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and a second ratio abnormality occurs. The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio (T2a / T2b) of the second on-time T2a, which is the on-time of the second on-off signal, to the second off-time T2b, which is the off-time of the second on-off signal, is greater than or equal to the third ratio value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and a third ratio abnormality occurs. The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio of the second off time T2b to the second on time T2a (T2b / T2a) is greater than or equal to the fourth ratio value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The output unit 16 distinguishes between the first ratio abnormality, the second ratio abnormality, the third ratio abnormality, and the fourth ratio abnormality and outputs accordingly. This configuration is preferable.

[0097] With this configuration, when the output unit 16 outputs a first ratio abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, increased). Furthermore, when the output unit 16 outputs a second ratio abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, decreased).

[0098] Furthermore, when the output unit 16 outputs a third ratio abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, increased). Also, when the output unit 16 outputs a fourth ratio abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, decreased).

[0099] [5] Furthermore, in any one of the man conveyors 1 described in [1] to [4] above, as in this embodiment, The processing unit 6 determines that the first detection unit 11 is abnormal if the first on time T1a is greater than or equal to a first threshold which is greater than one period T1 of the first on / off signal, and a first on abnormality occurs. The processing unit 6 determines that the first detection unit 11 is abnormal if the first off time T1b is greater than or equal to a second threshold which is greater than one period T1 of the first on / off signal, The processing unit 6 determines that the second detection unit 12 is abnormal if the second on time T2a is greater than or equal to a third threshold which is greater than one period T2 of the second on / off signal, and a second on abnormality occurs. The processing unit 6 determines that the second detection unit 12 is abnormal if the second off time T2b is greater than or equal to a fourth threshold which is greater than one period T2 of the second on / off signal, and a second off abnormality occurs. The output unit 16 distinguishes between the first ON abnormality, the first OFF abnormality, the second ON abnormality, and the second OFF abnormality and outputs accordingly. This configuration is preferable.

[0100] With this configuration, when the output unit 16 outputs a first ON abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, increased), or whether there is a possibility of an abnormality in the first detection unit 11 itself. Furthermore, when the output unit 16 outputs a first OFF abnormality, it is possible to determine whether the distance between the first detection unit 11 and the gear 7 should be increased or decreased (in this embodiment, decreased), or whether there is a possibility of an abnormality in the first detection unit 11 itself.

[0101] Furthermore, when the output unit 16 outputs a second ON abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, increased), or whether there is a possibility of a malfunction in the second detection unit 12 itself. Furthermore, when the output unit 16 outputs a second OFF abnormality, it is possible to determine whether the distance between the second detection unit 12 and the gear 7 should be increased or decreased (in this embodiment, decreased), or whether there is a possibility of a malfunction in the second detection unit 12 itself.

[0102] [6] Furthermore, in the man conveyor 1 of [5] above, which is one of the above [2] to [4], as in this embodiment, The output unit 16 outputs the first ON abnormality, the first OFF abnormality, the second ON abnormality, and the second OFF abnormality, prioritizing them over other abnormalities. This configuration is preferable.

[0103] With this configuration, the first ON abnormality, first OFF abnormality, second ON abnormality, and second OFF abnormality are output with priority over other abnormalities, so it is possible to reliably determine that the abnormality is not due to the position of the detection units 11 and 12 relative to the gear 7, but rather to an abnormality in the detection units 11 and 12 themselves.

[0104] It should be noted that the man conveyor 1 is not limited to the configuration of the embodiment described above, nor is it limited to the effects and benefits described above. Furthermore, it goes without saying that the man conveyor 1 can be modified in various ways without departing from the spirit of the present invention. For example, one or more of the configurations and methods described below may be arbitrarily selected and adopted in the configurations and methods of the embodiment described above.

[0105] (A) In the man conveyor 1 according to the above embodiment, the output unit 16 (first display unit 16a) is configured to distinguish between 16 types of abnormalities and output (display) information. However, the man conveyor 1 is not limited to this configuration. For example, the output unit 16 may be configured to distinguish between abnormalities according to the necessary response and output information.

[0106] For example, the output unit 16 may be configured to output the same information for abnormalities that require increasing the distance between the first detection unit 11 and the gear 7, specifically, the first upper limit abnormality, the first ratio abnormality, the second lower limit abnormality, and the first ON abnormality (for example, by displaying the same number of characters on the first display unit 16a). However, since the first ON abnormality may also be an abnormality of the first detection unit 11 itself, it is preferable to output the information separately from the first upper limit abnormality, the first ratio abnormality, and the second lower limit abnormality.

[0107] (B) In addition, in the man conveyor 1 according to the above embodiment, the processing unit 6 determines 16 types of abnormalities, and the output unit 16 (first display unit 16a) distinguishes between the 16 types of abnormalities and outputs (displays) the information. However, the man conveyor 1 is not limited to this configuration.

[0108] For example, the processing unit 6 may determine two or more types of abnormalities, and the output unit 16 may output two or more types of abnormality information. Although not particularly limited, for example, the number of types of abnormality information output by the output unit 16 may be fewer than the number of types of abnormalities determined by the processing unit 6.

[0109] (C) Furthermore, in the man conveyor 1 according to the above embodiment, the first to fourth ratio abnormalities are determined when each ratio (T1a / T1b, T1b / T1a, T2a / T2b, T2b / T2a) is greater than or equal to each ratio value. However, the man conveyor 1 is not limited to this configuration.

[0110] For example, in addition to the above-mentioned first to fourth ratio abnormalities (or instead of the above-mentioned first to fourth ratio abnormalities), a ratio abnormality may be determined when each ratio (T1a / T1b, T1b / T1a, T2a / T2b, T2b / T2a) is less than or equal to each ratio value. Such a configuration will be described below. In the following description, the detection units 11 and 12 are configured to output an ON signal when the teeth 7a of the gear 7 approach each other and an OFF signal when the teeth 7a of the gear 7 move away from each other, similar to the detection units 11 and 12 according to the above embodiment.

[0111] <5th ratio abnormality> The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and that this is a first ratio abnormality, if the ratio of the first on time T1a to the first off time T1b (T1a / T1b) is less than or equal to the fifth ratio value. The fifth ratio value is not particularly limited, but may be, for example, 40% to 50%.

[0112] Furthermore, if the output unit 16 outputs a fifth ratio abnormality, it can be determined that the distance between the first detection unit 11 and the gear 7 should be reduced. This allows for actions such as moving the first detection unit 11 closer to the gear 7.

[0113] <6th ratio abnormality> Furthermore, the processing unit 6 determines a second ratio abnormality, meaning the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio of the first off time T1b to the first on time T1a (T1b / T1a) is less than or equal to the sixth ratio value. The sixth ratio value is not particularly limited, but may be, for example, 40% to 50%.

[0114] Furthermore, if the output unit 16 outputs a sixth ratio abnormality, it can be determined that the distance between the first detection unit 11 and the gear 7 should be increased. This allows for, for example, taking action to move the first detection unit 11 away from the gear 7.

[0115] <7th ratio abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, or a seventh ratio abnormality, if the ratio of the second on time T2a to the second off time T2b (T2a / T2b) is less than or equal to the seventh ratio value. The seventh ratio value is not particularly limited, but may be, for example, 40% to 50%.

[0116] Furthermore, if the output unit 16 outputs a seventh ratio abnormality, it can be determined that the distance between the second detection unit 12 and the gear 7 should be reduced. This allows for actions such as moving the second detection unit 12 closer to the gear 7.

[0117] <8th ratio abnormality> Furthermore, the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, or an eighth ratio abnormality, if the ratio of the second off time T2b to the second on time T2a (T2b / T2a) is less than or equal to the eighth ratio value. The eighth ratio value is not particularly limited, but may be, for example, 40% to 50%.

[0118] Furthermore, if the output unit 16 outputs a fourth ratio abnormality, it can be determined that the distance between the second detection unit 12 and the gear 7 should be increased. This allows for, for example, the second detection unit 12 to be moved away from the gear 7.

[0119] Thus, in man conveyor belt 1, The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio (T1a / T1b) of the first on-time T1a, which is the on-time of the first on-off signal, to the first off-time T1b, which is the off-time of the first on-off signal, is less than or equal to the fifth ratio value, then the processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, and this is a fifth ratio abnormality. The processing unit 6 determines that the position of the first detection unit 11 relative to the gear 7 is abnormal, if the ratio of the first off time T1b to the first on time T1a (T1b / T1a) is less than or equal to the sixth ratio value, and this is called a sixth ratio abnormality. The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio (T2a / T2b) of the second on-time T2a, which is the on-time of the second on-off signal, to the second off-time T2b, which is the off-time of the second on-off signal, is greater than or equal to the seventh ratio value, and this is called a seventh ratio abnormality. The processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, if the ratio of the second off time T2b to the second on time T2a (T2b / T2a) is greater than or equal to the eighth ratio value, and the processing unit 6 determines that the position of the second detection unit 12 relative to the gear 7 is abnormal, and The output unit 16 distinguishes between the fifth ratio abnormality, the sixth ratio abnormality, the seventh ratio abnormality, and the eighth ratio abnormality and outputs accordingly. This configuration is also acceptable.

[0120] With this configuration, when the output unit 16 outputs a fifth ratio abnormality, it is possible to determine whether to increase or decrease the distance between the first detection unit 11 and the gear 7 (in the first detection unit 11 according to the above embodiment, it should be decreased). Also, when the output unit 16 outputs a sixth ratio abnormality, it is possible to determine whether to increase or decrease the distance between the first detection unit 11 and the gear 7 (in the first detection unit 11 according to the above embodiment, it should be increased).

[0121] Furthermore, when the output unit 16 outputs a seventh ratio abnormality, it is possible to determine whether to increase or decrease the distance between the second detection unit 12 and the gear 7 (in the case of the second detection unit 12 according to the above embodiment, it should be decreased). Also, when the output unit 16 outputs an eighth ratio abnormality, it is possible to determine whether to increase or decrease the distance between the second detection unit 12 and the gear 7 (in the case of the second detection unit 12 according to the above embodiment, it should be increased).

[0122] (D) In ​​addition, in the man conveyor 1 according to the above embodiment, the output unit 16 is configured to output the first ON abnormality, the first OFF abnormality, the second ON abnormality and the second OFF abnormality with priority over other abnormalities. However, the man conveyor 1 is not limited to this configuration. For example, the output unit 16 may be configured to output other abnormalities with priority over the first ON abnormality, the first OFF abnormality, the second ON abnormality and the second OFF abnormality.

[0123] (E) In addition, in the man conveyor 1 according to the above embodiment, the detection units 11 and 12 are configured to output an ON signal when the teeth 7a of the gear 7 approach and an OFF signal when the teeth 7a of the gear 7 move away. However, the man conveyor 1 is not limited to this configuration.

[0124] For example, the detection units 11 and 12 may be configured to output an OFF signal when the teeth 7a of the gear 7 approach, and an ON signal when the teeth 7a of the gear 7 move away. In such a configuration, the response when an abnormality is output (increasing or decreasing the distance between the detection units 11 and 12 and the gear 7) will be the opposite of the response in the above embodiment.

[0125] (F) Alternatively, in the man conveyor 1, as shown in Figure 7, the processing unit 6 may be configured to determine the abnormal position of the detection units 11 and 12 relative to the gear 7 based on the time difference T3a, T3b, T3c, T3d between the timing of the first on / off signal turning on (off) and the timing of the second on / off signal turning on (off).

[0126] For example, the processing unit 6 may be configured to determine that the position of the detection units 11 and 12 relative to the gear 7 is abnormal if the time difference T3a from the timing when the first on / off signal turns on to the timing when the second on / off signal turns on is greater than or equal to at least one of the first upper setting value and less than or equal to the first lower setting value.

[0127] Alternatively, for example, the processing unit 6 may be configured to determine that the position of the detection units 11 and 12 relative to the gear 7 is abnormal if the time difference T3b from the timing when the second on / off signal turns on to the timing when the first on / off signal turns on is greater than or equal to at least one of the second upper setting value and less than or equal to the second lower setting value.

[0128] Alternatively, for example, the processing unit 6 may be configured to determine that the position of the detection units 11 and 12 relative to the gear 7 is abnormal if the time difference T3c from the timing when the first on / off signal turns off to the timing when the second on / off signal turns off is greater than or equal to at least one of the third upper setting value and less than or equal to the third lower setting value.

[0129] Alternatively, for example, the processing unit 6 may be configured to determine that the position of the detection units 11 and 12 relative to the gear 7 is abnormal if the time difference T3d from the timing when the second on / off signal turns off to the timing when the first on / off signal turns off is greater than or equal to at least one of the fourth upper setting value and less than or equal to the fourth lower setting value.

[0130] While not particularly limited, each of the first to fourth upper setting values ​​may be, for example, 85% to 90% of the one cycle T1, T2 of the on / off signal. Also, while not particularly limited, each of the first to fourth lower setting values ​​may be, for example, 60% to 65% of the one cycle T1, T2 of the on / off signal.

[0131] Thus, in man conveyor belt 1, The aforementioned processing unit 6 is The time difference T3a and T3b between the timing when the first on / off signal turns on and the timing when the second on / off signal turns on is calculated. Based on the calculated time differences T3a and T3b, an abnormality in the position of the first detection unit 11 and the second detection unit 12 relative to the gear 7 is determined. This configuration is also acceptable.

[0132] With this configuration, it is possible to determine the appropriate timing for the first on / off signal to turn on and the second on / off signal to turn on. And, because the timing is appropriate, the processing unit 6 can accurately calculate the rotation direction of the gear 7, for example.

[0133] Furthermore, in man conveyor 1, The aforementioned processing unit 6 is The time difference T3c, T3d between the timing when the first on / off signal turns off and the timing when the second on / off signal turns off is calculated. Based on the calculated time differences T3c and T3d, an abnormality in the position of the first detection unit 11 and the second detection unit 12 relative to the gear 7 is determined. This configuration is also acceptable.

[0134] With this configuration, it is possible to determine the appropriate timing for the first on / off signal to turn off and the second on / off signal to turn off. And, because the timing is appropriate, the processing unit 6 can accurately calculate the rotation direction of the gear 7.

[0135] (G) For example, the execution order of each step, such as the operation, procedure, step, and stage, in the method and apparatus shown in the claims, specification, and drawings can be carried out in any order, as long as the result of the previous step is not used in the later step. For example, even if "first," "next," etc. are used for convenience in the explanation, it does not mean that it is necessary to perform them in that order. [Explanation of Symbols]

[0136] 1...Man conveyor, 1a...Boarding / alighting section, 2...Structure, 2a...Machine room, 3...Conveying section, 3a...Traveling section, 3b...Step, 4...Balustrade section, 4a...Handrail belt, 4b...Balustrade body section, 4c...Cover section, 5...Drive section, 5a...Drive source, 5b...First rotating section, 5c...Transmission section, 5d...Third rotating section, 5e...Wrap-around section, 6...Processing section, 6a...Acquisition section, 6b...Storage section, 6c...Calculation section, 6d...Control section, 7...Gear (Second rotating section), 7a...Teeth 8...Floor plate, 11...First detection unit, 12...Second detection unit, 13...Support unit, 14...Fixing means, 15...Input unit, 16...Output unit, 16a...First display unit, 16b...Second display unit, D1...First horizontal direction, D2...Second horizontal direction, D3...Up and down direction, T1...One cycle of the first on / off signal, T1a...First on time, T1b...First off time, T2...One cycle of the second on / off signal, T2a...Second on time, T2b...Second off time

Claims

1. Rotating gears, A first detection unit outputs a first on / off signal that repeatedly switches on and off depending on the change in distance from the teeth of the rotating gear, A second detection unit outputs a second on / off signal that repeatedly switches on and off depending on the change in distance from the teeth of the rotating gear, A processing unit that acquires the outputted first on / off signal and the second on / off signal, It comprises an output unit that outputs information, The processing unit determines whether the signal is normal or abnormal based on the acquired first on / off signal and second on / off signal. The output unit is a man conveyor that, when the processing unit determines that there is an abnormality, outputs information categorized by the nature of the abnormality.

2. The processing unit determines that the position of the first detection unit relative to the gear is abnormal if the first on-time, which is the on-length of the first on-off signal, is greater than or equal to a first upper limit abnormality. The processing unit determines that the position of the first detection unit relative to the gear is abnormal, if the first off time, which is the off length of the first on / off signal, is greater than or equal to the second upper limit value, and the second upper limit abnormality occurs. The processing unit determines that the position of the second detection unit relative to the gear is abnormal, if the second on-time, which is the on-length of the second on-off signal, is greater than or equal to the third upper limit value, and the processing unit determines that the position of the second detection unit relative to the gear is abnormal, and The processing unit determines that the position of the second detection unit relative to the gear is abnormal, if the second off time, which is the off length of the second on / off signal, is greater than or equal to the fourth upper limit value, and the processing unit determines that the position of the second detection unit relative to the gear is abnormal, and The man conveyor according to claim 1, wherein the output unit distinguishes and outputs the first upper limit abnormality, the second upper limit abnormality, the third upper limit abnormality, and the fourth upper limit abnormality.

3. The processing unit determines that the position of the first detection unit relative to the gear is abnormal, if the first on-time, which is the on-length of the first on-off signal, is below a first lower limit value, and the processing unit determines that the position of the first detection unit relative to the gear is abnormal. The processing unit determines that the position of the first detection unit relative to the gear is abnormal, if the first off time, which is the off length of the first on / off signal, is below the second lower limit, and the position of the first detection unit relative to the gear is abnormal. The processing unit determines that the position of the second detection unit relative to the gear is abnormal, or the third lower limit abnormality, when the second on-time, which is the on-length of the second on-off signal, is below the third lower limit. The processing unit determines that the position of the second detection unit relative to the gear is abnormal, or a fourth lower limit abnormality, when the second off time, which is the off length of the second on / off signal, is less than or equal to the fourth lower limit. The man conveyor according to claim 1, wherein the output unit distinguishes and outputs the first lower limit abnormality, the second lower limit abnormality, the third lower limit abnormality, and the fourth lower limit abnormality.

4. The processing unit determines that the position of the first detection unit relative to the gear is abnormal, if the ratio of the first on-time (the on-length of the first on-off signal) to the first off-time (the off-length of the first on-off signal) is greater than or equal to a first ratio value, then the processing unit determines that the position of the first detection unit relative to the gear is abnormal, which is a first ratio abnormality. The processing unit determines that the position of the first detection unit relative to the gear is abnormal, if the ratio of the first off time to the first on time is greater than or equal to the second ratio value, and a second ratio abnormality occurs. The processing unit determines that the position of the second detection unit relative to the gear is abnormal, or a third ratio abnormality, when the ratio of the second on-time (the on-length of the second on-off signal) to the second off-time (the off-length of the second on-off signal) is greater than or equal to a third ratio value. The processing unit determines that the position of the second detection unit relative to the gear is abnormal, if the ratio of the second off time to the second on time is greater than or equal to the fourth ratio value, and the processing unit determines that the position of the second detection unit relative to the gear is abnormal. The man conveyor according to claim 1, wherein the output unit distinguishes between the first ratio abnormality, the second ratio abnormality, the third ratio abnormality, and the fourth ratio abnormality and outputs accordingly.

5. The processing unit determines that the first detection unit is abnormal if the first on-time, which is the on-length of the first on-off signal, is greater than or equal to a first threshold that is greater than one cycle of the first on-off signal. The processing unit determines that the first detection unit is abnormal if the first off time, which is the off length of the first on / off signal, is greater than or equal to a second threshold that is greater than one cycle of the first on / off signal. The processing unit determines that the second detection unit is abnormal if the second on-time, which is the on-length of the second on-off signal, is greater than or equal to a third threshold that is greater than one cycle of the second on-off signal. The processing unit determines that the second detection unit is abnormal if the second off time, which is the off length of the second on / off signal, is greater than or equal to a fourth threshold that is greater than one cycle of the second on / off signal. The man conveyor according to claim 1, wherein the output unit distinguishes and outputs the first ON abnormality, the first OFF abnormality, the second ON abnormality, and the second OFF abnormality.

6. The processing unit determines that the first detection unit is abnormal if the first on time, which is the on length of the first on / off signal, is greater than or equal to a first threshold that is greater than one cycle of the first on / off signal, The processing unit determines that the first detection unit is abnormal if the first off time, which is the off length of the first on / off signal, is greater than or equal to a second threshold that is greater than one cycle of the first on / off signal. The processing unit determines that the second detection unit is abnormal if the second on-time, which is the on-length of the second on-off signal, is greater than or equal to a third threshold that is greater than one cycle of the second on-off signal. The processing unit determines that the second detection unit is abnormal if the second off time, which is the off length of the second on / off signal, is greater than or equal to a fourth threshold that is greater than one cycle of the second on / off signal. The output unit distinguishes between the first ON abnormality, the first OFF abnormality, the second ON abnormality, and the second OFF abnormality and outputs accordingly. The man conveyor according to any one of claims 2 to 4, wherein the output unit outputs the first ON abnormality, the first OFF abnormality, the second ON abnormality, and the second OFF abnormality with priority over other abnormalities.

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