CN113581988A - Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment - Google Patents
Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment Download PDFInfo
- Publication number
- CN113581988A CN113581988A CN202110923395.2A CN202110923395A CN113581988A CN 113581988 A CN113581988 A CN 113581988A CN 202110923395 A CN202110923395 A CN 202110923395A CN 113581988 A CN113581988 A CN 113581988A
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- CN
- China
- Prior art keywords
- frequency converter
- people conveyor
- speed
- conveying equipment
- light curtain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/02—Driving gear
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- Escalators And Moving Walkways (AREA)
Abstract
The invention relates to a variable frequency control system, personnel conveying equipment and a method for providing a variable frequency function for the personnel conveying equipment. The frequency conversion control system comprises: a control panel; a frequency converter communicatively connected to the control panel and communicatively connected to the people conveyor drive; and the light curtain is arranged at the inlet side of the personnel conveying equipment and is connected with the frequency converter in a communication mode, wherein under the condition that the personnel conveying equipment is not used by passengers, the frequency converter controls the personnel conveying equipment to operate at a standby speed through the driver, under the condition that the personnel conveying equipment is used by the passengers is detected by the light curtain, the light curtain sends a signal to the frequency converter, and after the signal is received by the frequency converter, the operation speed of the personnel conveying equipment is controlled by the driver to be increased from the standby speed to a rated speed.
Description
Technical Field
The invention relates to a variable frequency control system for personnel conveying equipment and the personnel conveying equipment. The invention also relates to a method for providing a variable frequency function for the personnel conveying equipment.
Background
With the energy saving requirements for people conveyor equipment such as escalators and the like, it is desirable to have a variable frequency function, i.e. to operate at standby speed in the absence of a load and at nominal speed in the presence of a load. For the existing personnel conveying equipment without the frequency conversion function, the personnel conveying equipment needs to be modified so as to have the frequency conversion function.
Disclosure of Invention
Accordingly, the present invention provides a variable frequency control system for a people conveyor, comprising: a control panel; a frequency converter communicatively connected to the control panel and communicatively connected to the people conveyor drive; and the light curtain is arranged at the inlet side of the personnel conveying equipment and is connected with the frequency converter in a communication mode, wherein under the condition that the personnel conveying equipment is not used by passengers, the frequency converter controls the personnel conveying equipment to operate at a standby speed through the driver, under the condition that the personnel conveying equipment is used by the passengers is detected by the light curtain, the light curtain sends a signal to the frequency converter, and after the signal is received by the frequency converter, the operation speed of the personnel conveying equipment is controlled by the driver to be increased from the standby speed to a rated speed.
Advantageously, said nominal speed is set by predetermined parameters of the frequency converter.
Advantageously, the frequency converter and the light curtain are pre-assembled together to form a pre-fabricated assembly.
Advantageously, the light curtain detects whether a passenger uses the people conveyor at a predetermined frequency.
Advantageously, after the people conveyor has been operated for a predetermined time at the nominal speed, the frequency converter controls the operating speed of the people conveyor via the drive to be reduced from the nominal speed to the standby speed if no passenger is detected by the light curtain using the people conveyor.
Advantageously, the predetermined time is determined by a timer of the frequency converter.
The invention also provides personnel conveying equipment which comprises the variable frequency control system.
The invention also provides a method for providing a frequency conversion function for the personnel conveying equipment, which comprises the following steps: providing a control panel; providing a frequency converter and a light curtain, wherein the frequency converter is communicatively connected to the control panel and a driver of the people conveyor, the light curtain is arranged at an inlet side of the people conveyor and is communicatively connected with the frequency converter, the frequency converter is configured to operate at a standby speed by controlling the people conveyor through the driver under the condition that the passengers do not use the people conveyor, the light curtain sends a signal to the frequency converter under the condition that the passengers use the people conveyor, and the frequency converter receives the signal and then controls the operating speed of the people conveyor to increase from the standby speed to a rated speed by controlling the people conveyor through the driver.
Advantageously, said nominal speed is set by predetermined parameters of the frequency converter.
Advantageously, the method further comprises pre-assembling the frequency converter and the light curtain together to form a pre-fabricated assembly.
Advantageously, the light curtain detects whether a passenger uses the people conveyor at a predetermined frequency.
Advantageously, after the people conveyor has been operated for a predetermined time at the nominal speed, the frequency converter controls the operating speed of the people conveyor via the drive to be reduced from the nominal speed to the standby speed if no passenger is detected by the light curtain using the people conveyor.
Advantageously, the predetermined time is determined by a timer of the frequency converter.
Drawings
Advantages and objects of the present invention will be better understood in the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:
fig. 1 shows a block diagram of a variable-frequency control system for a people conveyor according to the invention.
Fig. 2 shows a flow chart of a method of providing a variable frequency function to a people conveyor according to the invention.
Detailed Description
Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The term "sequentially comprising A, B, C, etc" merely indicates the order of the included elements A, B, C, etc. and does not exclude the possibility of including other elements between a and B and/or between B and C.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships.
Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to fig. 1 and 2.
The variable frequency control system for a people conveyor according to the invention comprises a control panel 1. The frequency converter 2 is communicatively connected to the control panel 1 and to the drive 3 of the people conveyor. For example, the frequency converter is connected to the control panel or the drive via a wireless or wired manner. The control panel can monitor the operational state of the frequency converter, for example, whether a fault occurs or not. The driver is used for driving the personnel conveying equipment to operate. The light curtain 4 is arranged on the entry side of the people conveyor and is connected in communication with the frequency converter. Advantageously, the light curtains are arranged on opposite sides of the people conveyor, so that when the direction of travel of the people conveyor changes, it is also possible to detect whether a passenger has entered the people conveyor using the light curtains.
In the case where no passenger uses the people conveyor, i.e. the people conveyor is not loaded, the light curtain does not detect that a passenger enters the people conveyor, and the frequency converter controls the people conveyor via the drive to operate at the standby speed. Under the condition that the light curtain detects that passengers enter the personnel conveying equipment, the light curtain sends a detected signal to the frequency converter, and the frequency converter receives the signal and controls the running speed of the personnel conveying equipment to be increased from the standby speed to the rated speed through the driver, so that the passengers are conveyed at a higher speed. The light curtain advantageously detects whether a passenger uses the people conveyor at a predetermined frequency.
The nominal speed can be set by predetermined parameters of the frequency converter, whereby by setting the predetermined parameters of the frequency converter the nominal speed of the people conveyor can be changed.
The frequency converter and the light curtain may be pre-assembled together to form a pre-fabricated assembly, such that the frequency conversion function is provided to the people conveyor merely by connecting the frequency converter to the control panel and the drive.
After the people conveyor runs for a preset time at the rated speed, if the light curtain does not detect that passengers use the people conveyor, the frequency converter controls the running speed of the people conveyor to be reduced from the rated speed to the standby speed through the driver. The predetermined time may be determined by a timer of the frequency converter.
In this way, the operating speed of the people conveyor is changed by connecting the frequency converter to the control panel and by controlling the drive by the frequency converter, without the need for the control panel to control the drive to change the operating speed of the people conveyor, in short, the operating speed of the people conveyor is controlled by the frequency converter and not by the control panel. Therefore, the time for transforming the personnel conveying equipment is saved, and the personnel conveying equipment can be adapted to various different personnel conveying equipment. In addition, the frequency converter and the light curtain are preassembled, so that the field installation time is reduced, and the cost is saved.
Fig. 2 shows a flow chart of a method for providing a people conveyor with a frequency conversion function.
In step 101, a control panel is provided, which may be the control panel of the people conveyor itself. Next, at step 102, a frequency converter communicatively connected to the control panel and the drive of the people conveyor and a light curtain disposed at the entrance side of the people conveyor and communicatively connected with the frequency converter are provided. The frequency converter is configured to operate at a standby speed by controlling the people conveyor through the driver without using the people conveyor by passengers, and the light curtain sends a signal to the frequency converter when detecting that the people conveyor is used by passengers, and the frequency converter receives the signal and then controls the operating speed of the people conveyor through the driver to increase from the standby speed to a rated speed.
The above description is merely illustrative of the present invention, which is set forth to enable one of ordinary skill in the art to fully practice the present invention, and not to limit the present invention. The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention, so as to achieve the purpose of the invention.
Claims (13)
1. A variable frequency control system for a people conveyor, the variable frequency control system comprising:
a control panel;
a frequency converter communicatively connected to the control panel and communicatively connected to the people conveyor drive;
a light curtain arranged at the inlet side of the people conveyor and communicatively connected with the frequency converter,
the frequency converter controls the personnel conveying equipment to operate at a standby speed through the driver under the condition that the personnel conveying equipment is not used by passengers, the light curtain sends a signal to the frequency converter under the condition that the personnel conveying equipment is used by the passengers, and the frequency converter receives the signal and then controls the operating speed of the personnel conveying equipment to increase from the standby speed to a rated speed through the driver.
2. The variable frequency control system of claim 1, wherein the nominal speed is set by predetermined parameters of the frequency converter.
3. The variable frequency control system of claim 1, wherein the frequency converter and the light curtain are pre-assembled together to form a pre-fabricated assembly.
4. The variable frequency control system of claim 1, wherein the light curtain detects whether a passenger uses the people conveyor at a predetermined frequency.
5. The variable frequency control system according to claim 1, wherein the frequency converter controls the operation speed of the people conveyor to be reduced from the rated speed to the standby speed via the driver if the light curtain does not detect the presence of the passenger using the people conveyor after the people conveyor operates at the rated speed for a predetermined time.
6. The variable frequency control system of claim 5, wherein the predetermined time is determined by a timer of the frequency converter.
7. People conveyor, characterized in that it comprises a variable frequency control system according to any of claims 1-6.
8. A method of providing variable frequency functionality to a people conveyor, the method comprising:
providing a control panel;
providing a frequency converter communicatively connected to the control panel and to the drive of the people conveyor, and a light curtain arranged at the entry side of the people conveyor and communicatively connected to the frequency converter,
the frequency converter is configured to operate at a standby speed by controlling the people conveyor through the driver under the condition that the passengers do not use the people conveyor, send a signal to the frequency converter under the condition that the light curtain detects that the passengers use the people conveyor, and increase the operating speed of the people conveyor from the standby speed to a rated speed by controlling the people conveyor through the driver after the frequency converter receives the signal.
9. The method of claim 8, wherein the nominal speed is set by predetermined parameters of the frequency converter.
10. The method of claim 8, further comprising pre-assembling the frequency converter and the light curtain together to form a pre-fabricated assembly.
11. The method of claim 8, wherein the light curtain detects whether a passenger uses the people conveyor at a predetermined frequency.
12. The method of claim 8, wherein after the people conveyor is operated at the rated speed for a predetermined time, if the light curtain does not detect that a passenger uses the people conveyor, the frequency converter controls the operation speed of the people conveyor to be reduced from the rated speed to the standby speed via the driver.
13. The method of claim 12, wherein the predetermined time is determined by a timer of the frequency converter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923395.2A CN113581988A (en) | 2021-08-12 | 2021-08-12 | Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment |
| EP22189960.2A EP4137434A1 (en) | 2021-08-12 | 2022-08-11 | Frequency conversion control system, personnel transportation apparatus and method for providing frequency conversion function thereto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923395.2A CN113581988A (en) | 2021-08-12 | 2021-08-12 | Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113581988A true CN113581988A (en) | 2021-11-02 |
Family
ID=78257457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110923395.2A Pending CN113581988A (en) | 2021-08-12 | 2021-08-12 | Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4137434A1 (en) |
| CN (1) | CN113581988A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313424C2 (en) * | 1993-04-26 | 1995-04-06 | O & K Rolltreppen Gmbh | Process for the electronic control of personal conveyor systems |
| CN203998569U (en) * | 2014-09-02 | 2014-12-10 | 广东吉荣电梯有限公司 | Energy-saving control device of escalator |
-
2021
- 2021-08-12 CN CN202110923395.2A patent/CN113581988A/en active Pending
-
2022
- 2022-08-11 EP EP22189960.2A patent/EP4137434A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4137434A1 (en) | 2023-02-22 |
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