JP4786319B2 - Passenger conveyor equipment - Google Patents

Description

  The present invention relates to a passenger conveyor device such as an escalator or a moving walkway.

  In the conventional passenger conveyor device, for example, when the number of passengers is large, the moving speed of the steps is variable for the purpose of improving the transportation efficiency. The total operating load is detected by detecting the output current value for the electric motor from the power converter, and the moving speed of the step is switched based on the comparison result between the total operating load and a pre-registered reference load. (For example, refer to Patent Document 1).

JP 2001-335270 A

  By the way, the total driving load includes a passenger weight load due to the use of the passenger and a driving resistance load that is a loss when the moving handrail or the step is driven. This driving resistance load fluctuates under the influence of, for example, a temperature change due to a seasonal change. Therefore, in the conventional passenger conveyor apparatus as described above, appropriate speed switching may not be performed under the influence of, for example, temperature changes due to seasonal changes.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a passenger conveyor device that can more appropriately switch the moving speed of steps.

  The passenger conveyor device according to the present invention detects a plurality of steps for transporting passengers, and a total driving load during driving of the steps, and obtains a driving resistance load that fluctuates in the long term from the detected total driving load, An operation control device is provided that switches the moving speed of the step in accordance with the comparison result between the reference load excluding the influence of fluctuations in the operation resistance load and the total operation load.

  According to the passenger conveyor device of the present invention, the operation control device detects the total operation load at the time of driving the step, obtains the operation resistance load that fluctuates in the long term from the detected total operation load, and varies the operation resistance load. The movement speed of the step is switched according to the comparison result between the reference load and the total operation load that eliminates the influence of the temperature.For example, the influence of a temperature change due to a seasonal change can be eliminated, and the movement speed of the step can be switched. It can be done more appropriately.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing an escalator device according to Embodiment 1 of the present invention. In the figure, the escalator body 1 includes a plurality of steps 2 for transporting passengers, a pair of moving handrails 3, and first and second motors 4, which are driving devices for circulating the steps 2 and the moving handrails 3. 5 and an announcement device 6 for broadcasting information such as caution information and guidance information are incorporated. A three-phase power source 9 is connected to the first and second motors 4 and 5 via an inverter 7 and a regenerative converter 8. The first and second motors 4 and 5 are operated by electric power supplied via the inverter 7 and the regenerative converter 8.

  The first motor 4 is attached with an encoder 4a for detecting the rotational speed. A signal generated by the encoder 4 a is input to the operation control device 10. The operation control device 10 monitors the moving speeds of the steps 2 and the moving handrail 3 based on information from the encoder 4a.

  A pair of photoelectric posts 11 are disposed on the upper and lower portions of the escalator body 1. The photoelectric post 11 is provided with a photoelectric sensor 11a that is a passenger detection sensor for detecting passengers, and a display 11b for displaying information such as caution information and guidance information. The operation control apparatus 10 determines the presence / absence of a passenger boarding from the forward direction and the reverse direction based on information from the photoelectric sensor 11a.

  The operation of the escalator body 1 is controlled by the operation control device 10. The operation control device 10 includes a storage unit (ROM and RAM) in which information such as a program is stored, and a processing unit (CPU) that performs arithmetic processing based on the program stored in the storage unit. Computer.

  The operation control device 10 includes a communication control unit 14, a converter control unit 15, and an inverter control unit 16. The communication control unit 14 inputs attention information and guidance information to the announcement device 6 and the display device 11b, and causes the announcement device 6 and the display device 11b to notify the information.

  The converter control unit 15 monitors power supply current feedback between the three-phase power supply 9 and the regenerative converter 8. Converter control unit 15 also monitors bus voltage feedback between regenerative converter 8 and inverter 7. Further, converter control unit 15 calculates a PWM command (pulse width modulation command) based on power supply current feedback and bus voltage feedback. Regenerative converter 8 converts three-phase AC power supplied from three-phase power supply 9 into DC power having a predetermined voltage value based on a PWM command from converter control unit 15. That is, the converter control unit 15 controls the bus voltage value. Further, the regenerative converter 8 returns the regenerative power supplied from the first and second motors 4, 5 to the three-phase power source 9 during the regenerative operation of the first and second motors 4, 5.

  The inverter control unit 16 includes a speed command calculation unit 16a and a current control calculation unit 16b. The speed command calculating unit 16 a calculates a speed command indicating the target moving speed of the step 2 and the moving handrail 3. Based on the speed command from the speed command calculation unit 16a and the speed feedback from the encoder 4a, the current control calculation unit 16b has the first and second speeds necessary for setting the moving speed of the step 2 and the moving handrail 3 to the target speed. A motor torque command indicating the driving force (torque amount) of the second motors 4 and 5 is calculated. The current control calculation unit 16 b calculates a PWM command based on the motor torque command and the motor current feedback between the inverter 7 and the second motor 5. The inverter 7 converts the DC power from the regenerative converter 8 into three-phase AC power having a predetermined phase difference, frequency, and current value based on the PWM command from the current control calculation unit 16b. The rotational speed and driving force of the first and second motors 4 and 5 are changed based on the phase difference, frequency, and current value of the three-phase AC power supplied from the inverter 7. That is, the inverter control unit 16 controls the rotation speed and driving force of the first and second motors 4 and 5 by controlling the operation of the inverter 7.

  For the operation setting of the step 2 and the moving handrail 3 by the operation control device 10, the step 2 and the moving handrail 3 are set based on the manual setting for manually setting the moving speed of the step 2 and the moving handrail 3 and the information from the photoelectric sensor 11a. Includes automatic setting to switch the moving speed.

  The manual setting includes a medium speed operation mode and a high speed operation mode. When the operation setting is set to the medium speed operation mode, the speed command calculation unit 16a sets the moving speed of the step 2 and the moving handrail 3 to the medium speed (20 m / min) that is the first speed. In addition, when the operation setting is in the high-speed operation mode, the speed command calculation unit 16a sets the moving speed of the step 2 and the moving handrail 3 to the high speed (30 m / min) that is the second speed.

  The automatic setting includes a standby medium speed variable mode, a standby high speed variable mode, and a third speed variable mode. The speed command calculating unit 16a switches the moving speed of the step 2 and the moving handrail 3 between the standby speed and the medium speed based on the information from the photoelectric sensor 11a when the operation setting is set to the standby medium speed variable mode. . Note that the standby speed can be designated in advance by stopping or at a low speed (10 m / min). Further, when the operation setting is set to the standby high speed variable mode, the speed command calculation unit 16a determines the moving speed of the step 2 and the moving handrail 3 based on the information from the photoelectric sensor 11a as the standby speed and the high speed. Switch. Specifically, when the operation setting is set to the standby medium speed variable mode (or the standby high speed variable mode), the speed command calculation unit 16a normally sets the moving speed of the step 2 and the moving handrail 3 as the standby speed, When a passenger is detected by the sensor 11a, the moving speed is set to a medium speed (or high speed). Moreover, the speed command calculating part 16a returns the moving speed of the step 2 and the moving handrail 3 to a standby speed, when the elapsed time after a passenger was last detected by the photoelectric sensor 11a reaches predetermined time.

  Furthermore, when the operation setting is set to the three-speed variable mode, the speed command calculation unit 16a, information from the photoelectric sensor 11a, motor current feedback that is a supply current between the inverter 7 and the second motor 5, Based on the reference load corresponding to the motor current feedback and the speed feedback from the encoder 4a, the moving speed of the step 2 and the moving handrail 3 is switched between the standby speed, the medium speed, and the high speed. Each operation mode is switched by an operating device (not shown) incorporated in the escalator body 1.

  Hereinafter, the operation control in the 3-speed variable mode will be described in detail. First, the reference load corresponding to the motor current feedback will be described in detail. FIG. 2 is an explanatory diagram showing the total operating load during the ascending operation of the escalator body 1 of FIG. 1, and shows the change in the total operating load over several months. FIG. 3 is an explanatory diagram showing an operating resistance load included in the total operating load of FIG. In the figure, the total operating load 20 necessary for driving the step 2 and the moving handrail 3 includes a passenger weight load 21 due to passenger use and a loss generated when the step 2 and the moving handrail 3 are driven. A certain driving resistance load 22 is included. As shown in FIG. 3, the driving resistance load 22 changes due to, for example, a change in temperature due to a change in season and the replacement of the moving handrail 3.

  The speed command calculation unit 16 a detects motor current feedback between the inverter 7 and the second motor 5 and recognizes the motor current feedback as the total operating load 20. That is, the change amount of the motor current feedback is recognized as the change amount of the total operating load 20. Further, the speed command calculation unit 16a accumulates the data of the total operating load 20 for a predetermined period, detects the no-load operating load (no-load motor current) from the data of the total operating load 20 within the past fixed period, The no-load total operating load is referred to as an operating resistance load 22. Specifically, the speed command calculation unit 16 a sets the value near the minimum load during the ascending operation within the past fixed period as the driving resistance load 22. Further, the speed command calculation unit 16a sets the value near the maximum load during the descent operation within the past fixed period as the operation resistance load 22. More specifically, the speed command calculation unit 16a sets the average value of the minimum load value and the plurality of nearby values during the ascending operation on the previous day as the driving resistance load 22. Moreover, the speed command calculating unit 16a sets the average value of the maximum load value and the plurality of nearby values during the descent operation on the previous day as the driving resistance load 22. That is, for example, the minimum load value and the maximum load value suddenly generated due to the influence of noise or the like are not regarded as the operating resistance load 22.

  Next, FIG. 4 is an explanatory diagram showing load characteristics of the first and second motors 4 and 5 in the escalator body 1 of FIG. In the figure, the horizontal axis represents the motor load factor, and the vertical axis represents the motor power consumed by the first and second motors 4 and 5. In FIG. 4, a load with a motor load factor of 10% is a load of about 10 passengers (600 kg). As shown in FIG. 4, when the moving speed of the step 2 and the moving handrail 3 is high, the motor power changes by 1.5 kW every time the motor load factor changes by 10%, and the moving of the step 2 and the moving handrail 3 When the speed is a medium speed, the motor power changes by 1.0 kW every time the motor load factor changes by 10%. The change amount of the motor power can be converted into the change amount of the motor current in advance. That is, at each moving speed of the step 2 and the moving handrail 3, the amount of change in the motor current due to the use of a predetermined number of passengers can be obtained in advance.

  The speed command calculation unit 16a adds the amount of change (set load) of the motor current when a predetermined number of passengers are riding on the step 2 to the driving resistance load 22 which is the motor current at no load, so that the reference load Ask for. That is, the speed command calculation unit 16a switches the speeds of the step 2 and the moving handrail 3 based on the comparison result between the current total driving load 20 and the reference load.

  The reference load includes a high reference load that is a first reference load and a low reference load that is a second reference load. The high reference load is obtained by adding the amount of change in motor current (first set load) when about 10 passengers are on the step 2 to the motor current at no load. The low reference load is obtained by adding the amount of change in the motor current (second set load) when about eight passengers are riding on the step 2 to the no-load motor current.

  Next, FIG. 5 is an explanatory diagram showing the relationship between the motor current and the speed change of the step 2 and the moving handrail 3 when the operation setting of the operation control device 10 of FIG. 1 is set to the 3-speed variable mode. FIG. 5A shows changes in the speed of the step 2 and the moving handrail 3, and FIG. 5B shows changes in the motor current due to changes in the number of passengers. Here, for the sake of accuracy, in FIG. 5B, when the moving speed of the step 2 and the moving handrail 3 is switched, the change rate of the motor current must be changed. In addition, the change of the motor current due to the switching of the moving speed is omitted.

  The speed command calculation unit 16a normally sets the moving speed of the step 2 and the moving handrail 3 as a standby speed. Moreover, the speed command calculating part 16a will switch the moving speed of the step 2 and the moving handrail 3 to a medium speed, if a passenger is detected by the photoelectric sensor 11a. Further, the speed command calculation unit 16a determines whether or not the motor current exceeds the high reference load after switching the moving speed of the step 2 and the moving handrail 3 to the medium speed. Furthermore, when the motor current exceeds the high reference load, the speed command calculation unit 16a determines whether or not the state in which the motor current exceeds the high reference load continues for a first predetermined time of, for example, about 2 seconds. When it is determined that the state in which the motor current exceeds the high reference load has continued for the first predetermined time, the moving speed of the step 2 and the moving handrail 3 is switched to a high speed.

  Further, the speed command calculation unit 16a determines whether or not the motor current is smaller than the low reference load after switching the moving speed of the step 2 and the moving handrail 3 to the high speed. Furthermore, when the motor current becomes smaller than the low reference load, the speed command calculation unit 16a continues the state where the motor current is smaller than the low reference load for a second predetermined time, for example, about 45 seconds. Determine whether or not. Furthermore, when it is determined that the state in which the motor current is smaller than the low reference load has continued for the second predetermined time, the speed command calculation unit 16a switches the moving speed of the step 2 and the moving handrail 3 to the medium speed. . That is, when the speed of the step 2 and the moving handrail 3 is switched to a high speed when the passenger gets on the step 2, the speed command calculation unit 16a is the time until the passenger gets off, that is, at least the step 2 is in the entire process. During the period of the half turn, the operation of the step 2 and the moving handrail 3 at a high speed is maintained.

  Furthermore, the speed command calculation unit 16a, when the time after the last passenger is detected by the photoelectric sensor 11a reaches a third predetermined time, for example, about 3 minutes, the moving speed of the step 2 and the moving handrail 3 Switch to standby speed. That is, the speed command calculation unit 16a maintains the operation of the step 2 and the moving handrail 3 at a medium speed at least for the time during which the step 2 is moved by half a full stroke.

  Next, the operation will be described. FIG. 6 is a flowchart showing an operation control operation performed by the operation control device 10 of FIG. In the figure, when the operation control device 10 is turned on, it is determined whether or not the operation setting is set to the automatic operation setting (step S1), and when it is determined that the operation setting is not the automatic operation setting, It is determined whether or not the operation setting is in a high-speed operation mode (step S2). At this time, when it is determined that the operation setting is in the high speed operation mode, the step 2 and the moving handrail 3 are operated at a high speed (step S3), and the operation setting is not in the high speed operation mode but in the medium speed operation mode. If it is determined that the step 2 is performed, the step 2 and the moving handrail 3 are driven at a medium speed (step S4). Next, it is determined whether or not an operation end command is input (step S5), and when it is determined that an operation end command is not input, it is determined again whether or not the operation setting is set to automatic operation. When it is determined that the driving end command is input, the step 2 and the moving handrail 3 are stopped and the driving control operation is ended.

  On the other hand, when it is determined that the driving setting is set to the automatic driving setting, the information from the photoelectric sensor 11a is received, and it is determined whether or not it is within a certain period of time from detection of a passenger entering the forward direction ( If it is determined in step S6) that it is not within a certain period of time from detection of passengers in the forward direction, it is determined whether it is within a certain period of time from detection of passengers in the backward direction (step S7). At this time, if it is determined that it is not within a certain period of time from detection of passengers entering in the reverse direction, it is determined whether the standby speed setting is set to a low speed (step S8), and the standby speed setting is set to a low speed. If it is determined that the step 2 and the moving handrail 3 are operated at a low speed (step S9), and if it is determined that the standby speed setting is not a low speed but a stop, the step 2 and the moving handrail 3 are operated. Is stopped (step S10). On the other hand, when it is determined that it is within a certain period of time from detection of passengers getting in the reverse direction, in order to prevent passengers from getting in from the reverse direction, the guidance information and the caution information are notified, and the driving setting is It is determined whether or not the speed driving mode is set, and the step 2 and the moving handrail 3 are driven at a medium speed or a high speed.

  On the other hand, if it is determined that the driving setting is set to the automatic driving setting, and it is determined that the driving setting is within a certain period of time from detection of a passenger entering in the forward direction, it is determined whether or not the driving setting is set to the three-speed variable mode. (Step S11). At this time, if it is determined that the operation setting is not set to the 3-speed variable mode, it is determined whether or not the operation setting is set to the standby high-speed variable mode (step S12), and the operation setting is set to the standby high-speed variable mode. If it is determined that the step 2 and the moving handrail 3 are operated at a high speed, and it is determined that the operation setting is not the standby high-speed variable mode but the standby medium-speed variable mode, the steps 2 and The moving handrail 3 is driven.

  On the other hand, when it is determined that the driving setting is set to the third speed variable mode, it is determined whether the step 2 and the moving handrail 3 are accelerating or decelerating (step S13), and accelerating or decelerating. If it is determined that there is, it is accelerated or decelerated to the target speed (step S14). On the other hand, if it is determined that the vehicle is not accelerating or decelerating, it is determined whether or not the state where the motor current exceeds the high reference load continues for 2 seconds (step S15), and the motor current exceeds the high reference load Is determined not to continue for 2 seconds, the step 2 and the moving handrail 3 are driven at a medium speed.

  On the other hand, when it is determined that the state where the motor current exceeds the high reference load has continued for 2 seconds, the step 2 and the moving handrail 3 are operated at a high speed, and the motor current is smaller than the low reference load. It is determined whether or not to continue for 45 seconds (step S16). At this time, when it is determined that the state where the motor current is smaller than the low reference load is not continued for 45 seconds, the operation of the step 2 and the moving handrail 3 at the high speed is continued, and the motor current is lower than the low reference load. When it is determined that the small state has continued for 45 seconds, the moving speed of the step 2 and the moving handrail 3 is switched to the medium speed.

  In such a passenger conveyor device, the operation control device 10 detects the total operation load 20 during operation of the steps 2 and the movable handrail 3, obtains the operation resistance load 22 from the total operation load 20, and determines the operation resistance load 22. Since the moving speed of the step 2 and the moving handrail 3 is switched according to the comparison result between the reference load excluding the influence of the fluctuation and the total operating load 20, it is possible to eliminate the influence of, for example, a temperature change due to a seasonal change. The moving speed of the step 2 and the moving handrail 3 can be switched more appropriately.

  Further, the operation control device 10 detects the no-load motor current from the motor current data accumulated for a certain period in the past, and adds the amount of change in the motor current due to the riding of a predetermined number of passengers to the no-load motor current. Thus, the reference load is obtained, the reference load is compared with the current motor current, and the moving speed of the step 2 and the moving handrail 3 is switched based on the comparison result. The load 22 can be eliminated, and switching of the moving speed of the step 2 and the moving handrail 3 based on the passenger weight load 21 can be made more appropriate.

  Further, the operation control device 10 sets the moving speed of the step 2 and the moving handrail 3 to a medium speed when the motor current is equal to or lower than the high reference load, and the step 2 and the moving handrail when the motor current exceeds the high reference load. Since the moving speed of No. 3 is high, the power consumption can be suppressed when the number of passengers is small, and the transportation efficiency can be improved when the number of passengers is large.

  Furthermore, when the motor current becomes smaller than the low reference load after increasing the moving speed of the step 2 and the moving handrail 3 to the high speed, the operation control device 10 sets the moving speed of the step 2 and the moving handrail 3 to the medium speed. Before returning, at least the step 2 and the moving handrail 3 are maintained at a high speed during the half-round movement, so even if a large number of passengers use the group, the group can be used more reliably. The operation at a high speed can be maintained until the end, the transportation efficiency can be improved, and the convenience of passengers can be improved.

  Further, when the operation control apparatus 10 determines that the passenger 2 is in the no-passenger state after setting the moving speed of the step 2 and the moving handrail 3 to the medium speed, at least the step before the moving speed of the step 2 and the moving handrail 3 is returned to the standby speed. 2 and the moving handrail 3 are moved at half speed of the whole stroke, the intermediate speed is primary, so that the moving speed of the step 2 and the moving handrail 3 is more reliably prevented from becoming a standby speed during passenger use. Can improve the convenience of passengers.

  Furthermore, since the operation setting of the operation control device 10 can be switched between the 3-speed variable mode, the standby medium speed variable mode, and the standby high-speed variable mode, the operation setting according to the installation conditions of the escalator body 1 can be selected. , The convenience of the administrator can be improved.

  In addition, although the elevator apparatus was demonstrated in Embodiment 1, this invention is applicable also to passenger conveyor apparatuses, such as a moving sidewalk.

  In the first embodiment, the high reference load is obtained by adding the amount of change in the motor current (first set load) when about 10 passengers are riding on the step 2 to the no-load motor current. However, the value of the first set load is not limited to the amount of change by about 10 passengers and is arbitrary. Similarly, the value of the second set load is also arbitrary.

  Further, in the first embodiment, it has been described that the first reference load and the second reference load are different from each other. However, the first setting load and the second setting load may be the same value. .

It is a block diagram which shows the escalator apparatus by Embodiment 1 of this invention. It is explanatory drawing which shows the total operation load at the time of the raise operation of the escalator main body of FIG. It is explanatory drawing which shows the driving | operation resistance load contained in the total driving load of FIG. It is explanatory drawing which shows the load characteristic of the 1st and 2nd motor in the escalator main body of FIG. It is explanatory drawing which shows the relationship between the speed change of a step and a moving handrail, and motor current at the time of the driving | operation setting of the driving | running control apparatus of FIG. It is a flowchart which shows the driving | operation control operation | movement performed by the driving | running control apparatus of FIG.

Explanation of symbols

  2 steps, 4, 5 first and second motors (first and second drive devices), 10 operation control device, 11a photoelectric sensor (passenger detection sensor), 20 total operation load, 21 passenger weight load, 22 operation Resistive load.

Claims (8)

A number of steps for transporting passengers and the total operating load during operation of the above steps are detected, and a driving resistance load that fluctuates over the long term is determined from the detected total driving load, and the effects of fluctuations in the driving resistance load are detected. A passenger conveyor device comprising: an operation control device that switches a moving speed of the step according to a comparison result between the excluded reference load and the total operation load.   The operation control device accumulates the detected total operating load information for a predetermined period, detects the no-load operating load from the accumulated total operating load information, and sets the no-load operating load as the operating resistance load. The passenger conveyor apparatus according to claim 1.   The said operation control apparatus calculates | requires reference | standard load by adding the setting load by passenger use of a predetermined number of persons to the driving | operation resistance load calculated | required from the detected total driving load. Passenger conveyor device.   The said operation control apparatus detects the supply current to the drive device which drives the said step, and calculates | requires the total driving load at the time of operation of the said step based on the supply current. The passenger conveyor apparatus in any one of 3. The operation control device sets the moving speed of the step to the first speed when the total operation load is equal to or lower than the first reference load, and when the total operation load exceeds the first reference load, The passenger conveyor device according to any one of claims 1 to 4, wherein a moving speed of the step is set to a second speed that is faster than the first speed. The operation control device, after the total operating load is the moving speed of the upper Symbol footstep and second speed by exceeding the first reference load, the said total operating load is less than the first reference load If the total operating load becomes smaller than the second reference load , at least the step is made before the moving speed of the step is set to the first speed. 6. The passenger conveyor device according to claim 5, wherein the operation at the second speed is maintained for a time during which the motor is moved by half a full stroke. A passenger detection sensor for detecting the presence or absence of a passenger,
The operation control device determines the presence or absence of a passenger based on information from the passenger detection sensor, sets the speed of the step to the first speed when it is determined that there is a passenger, and sets the speed of the step to the first If it is determined that there is no passenger after setting the speed of the first speed, the first speed is at least as long as the step is moved half a full cycle before the speed of the step is set to a standby speed slower than the first speed. The passenger conveyor apparatus according to claim 5 or 6, wherein the operation is maintained. A passenger detection sensor for detecting the presence or absence of a passenger,
The operation mode of the step by the operation control device is based on the comparison result of the reference load and the total operation load and the information from the passenger detection sensor, and the moving speed of the step is set to the first and second speeds and the first speed. A three-speed variable mode that switches between a standby speed slower than the speed, a standby medium-speed variable mode that switches the moving speed of the step between the standby speed and the first speed based on information from the passenger detection sensor, and the passenger detection 8. The standby high-speed variable mode in which the moving speed of the step is switched between a standby speed and a second speed based on information from a sensor can be switched. The passenger conveyor device described.

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