Elevator electrical comprehensive examination device and use method thereof

Abstract

The invention provides an elevator electrical comprehensive assessment device and a using method thereof.The elevator electrical comprehensive assessment device comprises a master control system, a lift car lifting control system, a sorting control system, a simulation lift car and a simulation sorting mechanism, and the lift car lifting control system and the sorting control system are both electrically connected with the master control system; the lift car lifting control system is electrically connected with the simulation lift car, and the sorting control system is electrically connected with the simulation sorting mechanism; the lift car lifting control system is used for lifting the simulation lift car to a designated floor, when the simulation lift car reaches the designated floor, the master control system sends a sorting signal to the sorting control system, and the sorting control system controls the simulation sorting mechanism to carry out sorting. According to the elevator electrical comprehensive examination device and the use method thereof, the functionality is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator teaching, and in particular to an elevator electrical comprehensive assessment device and a use method thereof. Background Art

[0002] In the field of elevator professional education, the selection and application of teaching equipment are increasingly tending to strengthen the practical teaching of elevator electrical installation and maintenance modules. These devices are usually equipped with advanced simulation systems and practical platforms, so that students can get sufficient practical opportunities in the construction of control circuits, identification and detection of electrical components, etc. By simulating the real elevator electrical system, students can deeply understand the working principle of the elevator and master the necessary installation and maintenance skills.

[0003] However, although the teaching of elevator electrical installation and maintenance has received full attention, the existing resources for teaching equipment for elevator operation programming modules seem to be inadequate. Programming logic is the core of elevator control system design, which involves multiple aspects such as elevator operation strategy, safety protection, and fault diagnosis. However, the current teaching equipment is slightly insufficient in supporting students in writing, debugging, and optimizing elevator operation programs. This leads to some obstacles for students in understanding the software level of elevator control systems, especially in the in-depth study and application of programming logic. Summary of the invention

[0004] The purpose of the present invention is to provide an elevator electrical comprehensive assessment device and a method of using the same, aiming to solve the problem of poor functionality in the existing elevator teaching process.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, an elevator electrical comprehensive assessment device is provided, comprising a general control system, a car lifting control system, a sorting control system, a simulated car and a simulated sorting mechanism, wherein the car lifting control system and the sorting control system are both electrically connected to the general control system, the car lifting control system is electrically connected to the simulated car, and the sorting control system is electrically connected to the simulated sorting mechanism;

[0007] Among them, the car lifting control system is used to lift the simulated car to a designated floor. When the simulated car reaches the designated floor, the general control system sends a sorting signal to the sorting control system, and the sorting control system controls the simulated sorting mechanism to perform sorting.

[0008] Optionally, after the simulated sorting mechanism completes the sorting action, the sorting control system feeds back a completion signal to the general control system, and the general control system transmits a corresponding signal to the car lifting control system to control the simulated car to reach the next designated floor.

[0009] Optionally, the analog sorting mechanism includes a conveyor belt and a three-axis slide, and the conveyor belt and the three-axis slide are both electrically connected to the sorting control system.

[0010] Optionally, the overall control system includes a programmable controller and a touch screen, the programmable controller is electrically connected to the touch screen, and the car lifting control system and the sorting control system are both electrically connected to the programmable controller.

[0011] In a second aspect, a method for comprehensive assessment of elevator electrical equipment is provided, wherein the method uses the above-mentioned comprehensive assessment device for elevator electrical equipment to conduct teaching assessment, and comprises the following steps:

[0012] S1, simulate sorting steps;

[0013] S2, simulated lifting steps;

[0014] S3, simulate the feeding step.

[0015] Optionally, in step S1, the following steps are included:

[0016] S101, manual mode: feeding instructions are sent on the touch screen, and the programmable controller controls the conveyor belt motor to move forward and backward, the Z axis to rise and fall, the clamping and releasing of the clamping jaws, and the left and right movement of the Y axis;

[0017] S102, return to origin mode: press the return to origin button on the touch screen, and each actuator returns to the origin;

[0018] S103, automatic mode: press the start button on the touch screen, the feed trough starts to feed materials to the conveyor belt, the conveyor belt starts to move forward, when the workpiece reaches the end of the conveyor belt, the conveyor belt stops running, the Z axis drops, the clamping claw grabs the workpiece, the Z axis rises, the Y axis moves left, after reaching the trough, the Z axis drops, the clamping claw releases the workpiece and puts it into the trough, after accumulating 2 workpieces, start to put workpieces into another trough, after accumulating 3 workpieces, each actuator returns to the origin and stops working;

[0019] S104, before running in automatic mode, the running speed of the Y-axis and Z-axis must be set on the touch screen, and all actuators must be at the origin position. Otherwise, when the start button is pressed, the equipment cannot run, and the alarm indicator light flashes at a frequency of once per second;

[0020] Optionally, in step S1, the conveyor belt running speed is: 25Hz forward, 20Hz backward, acceleration and deceleration time 1S; the number of workpieces in each trough can be displayed on the touch screen, and it will be automatically cleared after the automatic mode is completed; the acceleration and deceleration time of the Y-axis and Z-axis can be set on the touch screen; the running speed of the Y-axis and Z-axis can be set on the touch screen; press the touch screen or the external "emergency stop" button, no matter what state or mode it is in, it must stop.

[0021] Optionally, in step S2, the following steps are included:

[0022] S201, manual mode: control the forward, reverse and stop of the motor on the touch screen;

[0023] S202, automatic mode: press the start button on the touch screen, the motor will rotate forward for 5 seconds, stop for 1 second, reverse for 5 seconds, stop for 1 second, and stop after repeating this cycle 3 times;

[0024] The operating frequency can be set on the touch screen, and the output frequency, output voltage and output current of the inverter can be displayed on the touch screen. Press the touch screen or the external emergency stop button to stop the inverter regardless of the state or mode.

[0025] Optionally, in step S3, the following steps are included:

[0026] S301, one stepper motor controls the left side transmission, another stepper motor controls the right side transmission, and a three-phase AC motor controls the feeding conveyor belt;

[0027] S302, manual mode: the touch screen controls the forward and backward movement of the left and right conveyor belts, and the left and right movement of the feeding conveyor belt;

[0028] S303, homing mode: Press the homing button on the touch screen, and the two stepping motors return to the origin position;

[0029] S304, feeding mode:

[0030] Before operation, the left and right conveyor belts must be at the origin position. Press the start button on the touch screen to start operation. When the sensor in the middle of the feeding conveyor belt senses the presence of a workpiece, it will transport the workpiece to the left conveyor belt at a frequency of 25HZ. When it reaches the left sensor, the feeding conveyor belt stops running. The left conveyor belt first runs backward for 10c, stops for 3S, scans the workpiece, and the scanning indicator light turns on. Then it runs backward for 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait.

[0031] Next workpiece: When the left side has transported 4 workpieces cumulatively, the workpiece will be transported to the right side at a frequency of 25HZ. When it reaches the right sensor, the feeding conveyor belt stops running. The right conveyor belt first moves backward 10cm, stops for 3S, scans the workpiece, the scanning indicator light turns on, then runs backward 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait for the next workpiece. It stops running after transporting 2 workpieces cumulatively.

[0032] Optionally, in step S3, the number of workpieces currently transported by the left and right conveyor belts can be displayed on the touch screen, and will be automatically cleared after the feeding mode is completed; the acceleration time of the left and right conveyor belts can be set to 1S, and the deceleration time can be set to 1S, which can be set on the touch screen; the running speed of the left and right conveyor belts can be set on the touch screen; press the touch screen or the external emergency stop button, no matter which state or mode it is in, it must stop;

[0033] The car lifting control system uses the on and off of the photoelectric switch as an external signal for floor memory. When running upward, the memory performs addition, and when running downward, the memory performs subtraction, thereby changing the data in the memory. After the programmable controller receives the leveling signal of the first floor, it issues a door opening command, the conveyor belt feeds and runs, the feed conveyor belt stops running, and the door is closed; finally, it runs upward and returns to the designated floor.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. Space optimization design: The present invention adopts a compact space layout, integrating the three-axis slide, conveyor belt and elevator control system in a unified framework, reducing the demand for laboratory space and also reducing the installation and maintenance costs of the equipment.

[0036] 2. Multifunctional integration: The integrated equipment integrates a variety of mechatronics applications, enabling students to learn and practice a variety of technologies such as elevator control, three-axis slide positioning and conveyor belt transportation on one platform, thereby improving learning efficiency.

[0037] 3. PLC Programming Practice: By using a programmable controller (PLC) for programming, students can control the operation of the elevator, including starting, stopping, speed control, and floor selection. They can also control the precise movement of the three-axis slide and the transportation speed of the conveyor belt, deepening their understanding of the control logic of the automation system.

[0038] 4. Interactive learning experience: The device provides an interactive operation interface, allowing students to monitor and adjust the device operation status in real time, enhancing the interactivity and practicality of learning.

[0039] 5. Modular teaching application: The various components in the equipment, such as the elevator model, three-axis slide and conveyor belt, can be taught as independent modules or used in combination to meet different teaching needs and course designs.

[0040] 6. Flexible scenario simulation: Through PLC programming, students can simulate different work scenarios and application cases, such as cargo handling, automated assembly line processes, etc., so as to better understand the application of mechatronic systems in actual industrial environments.

[0041] 7. System Integration and Debugging: Students can learn through practical operations how to integrate various independent system components and perform system debugging to ensure that the entire system works together to achieve the expected performance.

[0042] 8. Cultivation of innovative thinking: The integrated equipment encourages students to carry out innovative design, realize personalized control strategies and automated processes through programming, and cultivate students' innovative thinking and ability to solve complex problems.

[0043] 9. Cost-Benefit Analysis: By implementing multiple functions on the same machine, the need to purchase multiple single-function devices is reduced, thereby reducing equipment procurement and operating costs for educational institutions.

[0044] 10. Safe operation guarantee: Many safety features are incorporated into the equipment design, such as emergency stop button, safety shield, etc., to ensure the safety of students during operation.

[0045] 11. Sustainable development concept: The design and use of the equipment embodies the concept of energy conservation and emission reduction, and cultivates students' environmental awareness through efficient energy utilization and optimized control strategies. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1 It is a structural schematic diagram of the elevator electrical comprehensive assessment device of the present invention.

[0048] In the figure: 1. General control system; 2. Simulated car; 3. Conveyor belt; 4. Three-axis slide. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0052] Combine the following Figure 1 The invention describes an elevator electrical comprehensive assessment device and a method of using the device.

[0053] like Figure 1 As shown, the present invention provides an elevator electrical comprehensive assessment device, including a first aspect, providing an elevator electrical comprehensive assessment device, including a general control system 1, a car lifting control system, a sorting control system, a simulated car 2 and a simulated sorting mechanism, the car lifting control system and the sorting control system are both electrically connected to the general control system 1, the car lifting control system is electrically connected to the simulated car 2, and the sorting control system is electrically connected to the simulated sorting mechanism; wherein, the car lifting control system is used to lift the simulated car 2 to a designated floor, when the simulated car 2 arrives at the designated floor, the general control system 1 sends a sorting signal to the sorting control system, and the sorting control system controls the simulated sorting mechanism to perform sorting.

[0054] In some embodiments, after the simulated sorting mechanism completes the sorting action, the sorting control system feeds back a completion signal to the general control system 1, and the general control system 1 transmits a corresponding signal to the car lifting control system to control the simulated car 2 to reach the next designated floor.

[0055] In some embodiments, the simulated sorting mechanism includes a conveyor belt 3 and a three-axis slide 4, and the conveyor belt 3 and the three-axis slide 4 are electrically connected to the sorting control system. The invention adopts a compact spatial layout, integrating the three-axis slide 4, the conveyor belt 3 and the elevator control system in a unified framework, reducing the demand for laboratory space and also reducing the installation and maintenance costs of the equipment.

[0056] In some embodiments, the overall control system 1 includes a programmable controller and a touch screen, the programmable controller is electrically connected to the touch screen, and the car lifting control system and the sorting control system are both electrically connected to the programmable controller. By using a programmable controller (PLC) for programming, students can control the operation of the elevator, including starting, stopping, speed control, and floor selection, etc. At the same time, they can also control the precise movement of the three-axis slide 4 and the transportation speed of the conveyor belt 3, thereby deepening their understanding of the control logic of the automation system.

[0057] In a second aspect, a method for comprehensive assessment of elevator electrical equipment is provided, wherein the method uses the above-mentioned comprehensive assessment device for elevator electrical equipment to conduct teaching assessment, and comprises the following steps:

[0058] S1, simulate sorting steps;

[0059] S2, simulated lifting steps;

[0060] S3, simulate the feeding step.

[0061] In some embodiments, in step S1, the following steps are included:

[0062] S101, manual mode: the touch screen issues a feeding instruction, and the programmable controller controls the motor of the conveyor belt 3 to move forward and backward, the Z axis to rise and fall, the clamping and releasing of the clamping jaws, and the left and right movement of the Y axis;

[0063] S102, return to origin mode: press the return to origin button on the touch screen, and each actuator returns to the origin;

[0064] S103, automatic mode: press the start button on the touch screen, the feed trough starts to feed materials to the conveyor belt 3, the conveyor belt 3 starts to move forward, when the workpiece reaches the end of the conveyor belt 3, the conveyor belt 3 stops running, the Z axis drops, the clamping claw clamps the workpiece, the Z axis rises, the Y axis moves left, after reaching the trough, the Z axis drops, the clamping claw releases the workpiece and puts it into the trough, after accumulating 2 workpieces, start to put workpieces into another trough, after accumulating 3 workpieces, each actuator returns to the origin and stops working;

[0065] S104, before running in automatic mode, the running speed of the Y-axis and Z-axis must be set on the touch screen, and all actuators must be at the origin position. Otherwise, when the start button is pressed, the equipment cannot run, and the alarm indicator light flashes at a frequency of once per second;

[0066] In some embodiments, in step S1, the running speed of the conveyor belt 3 is: 25Hz forward, 20Hz backward, and the acceleration and deceleration time is 1S; the number of workpieces in each trough can be displayed on the touch screen, and it will be automatically cleared after the automatic mode is completed; the acceleration and deceleration time of the Y-axis and Z-axis can be set on the touch screen; the running speed of the Y-axis and Z-axis can be set on the touch screen; press the touch screen or the external "emergency stop" button, no matter what state or mode it is in, it must stop.

[0067] In some embodiments, in step S2, the following steps are included:

[0068] S201, manual mode: control the forward, reverse and stop of the motor on the touch screen;

[0069] S202, automatic mode: press the start button on the touch screen, the motor will rotate forward for 5 seconds, stop for 1 second, reverse for 5 seconds, stop for 1 second, and stop after repeating this cycle 3 times;

[0070] The operating frequency can be set on the touch screen, and the output frequency, output voltage and output current of the inverter can be displayed on the touch screen. Press the touch screen or the external emergency stop button to stop the inverter regardless of the state or mode.

[0071] In some embodiments, in step S3, the following steps are included:

[0072] S301, one stepper motor controls the left side transmission, another stepper motor controls the right side transmission, and the three-phase AC motor controls the feeding conveyor belt 3;

[0073] S302, manual mode: the touch screen controls the forward and backward movement of the left and right conveyor belts 3, and the left and right movement of the feeding conveyor belt 3;

[0074] S303, homing mode: Press the homing button on the touch screen, and the two stepping motors return to the origin position;

[0075] S304, feeding mode:

[0076] Before operation, the left and right conveyor belts 3 must be at the origin position. Press the start button on the touch screen to start operation. When the sensor in the middle of the feeding conveyor belt 3 senses the presence of a workpiece, it transports the workpiece to the left conveyor belt 3 at a frequency of 25HZ. When it reaches the left sensor, the feeding conveyor belt 3 stops running. The left conveyor belt 3 first runs backward for 10c, stops for 3S, scans the workpiece, and the scanning indicator light turns on. Then it runs backward for 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait.

[0077] Next workpiece: When the left side has transported 4 workpieces cumulatively, it starts to transport the workpieces to the right side at a frequency of 25HZ. When it reaches the right sensor, the feeding conveyor belt 3 stops running, and the right conveyor belt 3 first moves backward 10cm, stops for 3S, scans the workpiece, the scanning indicator light is on, then it moves backward 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait for the next workpiece. It stops running after transporting 2 workpieces cumulatively.

[0078] In some embodiments, in step S3, the number of workpieces currently transported by the left and right conveyor belts 3 can be displayed on the touch screen, and will be automatically cleared after the feeding mode is completed; the acceleration time of the left and right conveyor belts 3 is set to 1S, and the deceleration time is set to 1S, which can be set on the touch screen; the running speed of the left and right conveyor belts 3 can be set on the touch screen; press the touch screen or the external emergency stop button, no matter which state or mode it is in, it must stop;

[0079] The car lifting control system uses the on and off of the photoelectric switch as an external signal for floor memory. When running upward, the memory performs addition, and when running downward, the memory performs subtraction, thereby changing the data in the memory. After the programmable controller receives the leveling signal of the first floor, it issues a door opening command, the conveyor belt 3 feeds and runs, the feed conveyor belt 3 stops running, and the door is closed; finally, it runs upward and returns to the designated floor.

[0080] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An elevator electrical comprehensive assessment device, characterized in that: The system comprises a general control system (1), a car lifting control system, a sorting control system, a simulated car (2) and a simulated sorting mechanism, wherein the car lifting control system and the sorting control system are both electrically connected to the general control system (1), the car lifting control system is electrically connected to the simulated car (2), and the sorting control system is electrically connected to the simulated sorting mechanism; The car lifting control system is used to lift the simulated car (2) to a designated floor. When the simulated car (2) reaches the designated floor, the overall control system (1) sends a sorting signal to the sorting control system, and the sorting control system controls the simulated sorting mechanism to perform sorting.

2. The elevator electrical comprehensive assessment device according to claim 1, characterized in that: After the simulated sorting mechanism completes the sorting action, the sorting control system feeds back a completion signal to the general control system (1), and the general control system (1) transmits a corresponding signal to the car lifting control system to control the simulated car (2) to reach the next designated floor.

3. The elevator electrical comprehensive assessment device according to claim 2, characterized in that: The simulated sorting mechanism comprises a conveyor belt (3) and a three-axis slide table (4), and both the conveyor belt (3) and the three-axis slide table (4) are electrically connected to the sorting control system.

4. The elevator electrical comprehensive assessment device according to claim 3, characterized in that: The overall control system (1) comprises a programmable controller and a touch screen, wherein the programmable controller is electrically connected to the touch screen, and the car lifting control system and the sorting control system are both electrically connected to the programmable controller.

5. A comprehensive evaluation method for elevator electrical equipment, characterized in that: Using the elevator electrical comprehensive assessment device according to claim 4 to conduct teaching assessment includes the following steps: S1, simulate sorting steps; S2, simulated lifting steps; S3, simulate the feeding step.

6. The elevator electrical comprehensive assessment method according to claim 5, characterized in that: In step S1, the following steps are included: S101, manual mode: a feeding instruction is issued on the touch screen, and the programmable controller controls the motor of the conveyor belt (3) to move forward and backward, the Z axis to rise and fall, the clamping and releasing of the clamping claws, and the left and right movement of the Y axis; S102, return to origin mode: press the return to origin button on the touch screen, and each actuator returns to the origin; S103, automatic mode: Press the start button on the touch screen, the feed trough starts to feed materials to the conveyor belt (3), and the conveyor belt (3) starts to move forward. When the workpiece reaches the end of the conveyor belt (3), the conveyor belt (3) stops running, the Z axis drops, the clamping claw grabs the workpiece, the Z axis rises, and the Y axis moves to the left. After reaching the trough, the Z axis drops, the clamping claw releases the workpiece and puts it into the trough. After accumulating two workpieces, the workpiece starts to be put into another trough. After accumulating three workpieces, each actuator returns to the origin and stops working. S104. Before running in automatic mode, the running speed of the Y-axis and Z-axis must be set on the touch screen, and all actuators must be at the origin. Otherwise, when the start button is pressed, the equipment cannot run, and the alarm indicator light flashes at a frequency of once per second.

7. The elevator electrical comprehensive assessment method according to claim 6, characterized in that: In step S1, the conveyor belt (3) runs at a speed of 25 Hz when forward and 20 Hz when backward, with an acceleration and deceleration time of 1 s. The number of workpieces in each trough can be displayed on the touch screen, and will be automatically reset after the automatic mode is completed. The acceleration and deceleration time of the Y-axis and Z-axis can be set on the touch screen. The running speed of the Y-axis and Z-axis can be set on the touch screen. By pressing the touch screen or the external "emergency stop" button, the conveyor belt (3) must stop regardless of the state or mode.

8. The elevator electrical comprehensive assessment method according to claim 5, characterized in that: In step S2, the following steps are included: S201, manual mode: control the forward, reverse and stop of the motor on the touch screen; S202, automatic mode: press the start button on the touch screen, the motor will rotate forward for 5 seconds, stop for 1 second, reverse for 5 seconds, stop for 1 second, and stop after repeating this cycle 3 times; The operating frequency can be set on the touch screen, and the output frequency, output voltage and output current of the inverter can be displayed on the touch screen. Press the touch screen or the external emergency stop button to stop the inverter regardless of the state or mode.

9. The elevator electrical comprehensive assessment method according to claim 5, characterized in that: In step S3, the following steps are included: S301, one stepper motor controls the left side transmission, another stepper motor controls the right side transmission, and a three-phase AC motor controls the feeding conveyor belt (3); S302, manual mode: the touch screen controls the forward and backward movement of the left and right conveyor belts (3), and the left and right movement of the feed conveyor belt (3); S303, homing mode: Press the homing button on the touch screen, and the two stepping motors return to the origin position; S304, feeding mode: Before operation, the left and right conveyor belts (3) must be at the origin position. Press the start button on the touch screen to start operation. When the sensor in the middle of the feeding conveyor belt (3) senses the presence of a workpiece, it transports the workpiece to the left conveyor belt (3) at a frequency of 25HZ. When it reaches the left sensor, the feeding conveyor belt (3) stops running. The left conveyor belt (3) first runs backward for 10c, stops for 3S, scans the workpiece, and the scanning indicator light turns on. Then it runs backward for 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait. Next workpiece: When the left side has transported 4 workpieces cumulatively, the workpiece will start to be transported to the right side at a frequency of 25HZ. When it reaches the right sensor, the feeding conveyor belt (3) stops running. The right conveyor belt (3) first moves backwards for 10cm, stops for 3S, scans the workpiece, and the scanning indicator light comes on. Then it moves backwards for 15m to transport the workpiece to the cargo box, and finally returns to the origin and continues to wait for the next workpiece. It stops running after transporting 2 workpieces cumulatively.

10. The elevator electrical comprehensive assessment method according to claim 5, characterized in that: In step S3, the number of workpieces currently transported by the left and right conveyor belts (3) can be displayed on the touch screen, and will be automatically cleared after the feeding mode is completed; the acceleration time of the left and right conveyor belts (3) can be set to 1S, and the deceleration time can be set to 1S, which can be set on the touch screen; the running speed of the left and right conveyor belts (3) can be set on the touch screen; by pressing the touch screen or the external emergency stop button, the conveyor belts must stop regardless of the state or mode; The car lifting control system uses the on and off of the photoelectric switch as an external signal for floor memory. When the car moves upward, the memory performs addition, and when the car moves downward, the memory performs subtraction, thereby changing the data in the memory. After the programmable controller receives the leveling signal of the first floor, it issues a door opening command, the conveyor belt (3) starts feeding, the feeding conveyor belt (3) stops running, and the door is closed; finally, the car moves upward and returns to the designated floor.

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