Resistance testing method in operation process of induction door

Abstract

The invention relates to a resistance testing method in the operation process of an induction door. A resistance testing method in the operation process of an induction door comprises the following steps that S1, a door body of the induction door is hung on a guide rail through a roller assembly, an induction door motor drives the roller assembly to move along the guide rail through a transmission mechanism, the transmission mechanism comprises a transmission wheel, and a controller receives a door opening and closing signal to control the induction door motor to drive the transmission wheel to rotate forwards and backwards; therefore, the door body is driven to open and close. S2, collecting bus current of a motor of the induction door in real time, and reversely pushing frictional resistance of a door body of the induction door in the operation process; in the constant-speed operation process of the door body, the frictional resistance f is equal to the tensile force F of the induction door motor and is equal to M / L; wherein L is the radius of the transmission wheel, the output torque M is equal to KT * * I, I is the real-time current of the induction door motor, and KT is the rated output torque constant of the induction door motor after speed reduction through the speed reducer. The device has the advantages that the resistance in the operation process of the induction door can be conveniently tested, and the measurement precision is high.

Description

Technical Field

[0001] The invention relates to a method for testing resistance during the operation of an induction door. Background Art

[0002] When the induction door is opened or closed once, the door body first opens or closes at high speed, and when the door body approaches the door post or is close to closing, it decelerates and runs at a low speed due to inertia until the door body opens or closes. After the induction door is used many times, that is, after the door body has been running for a period of time, the roller assembly of the induction door will be worn, especially the roller assembly of the induction door with a large weight (a door body of more than 150kg), which will cause the friction resistance of the door to increase, the opening and closing performance to deteriorate, and the opening and closing time to increase. Summary of the invention

[0003] The purpose of the present invention is to provide a method for testing the resistance of an induction door during operation, which is convenient for testing the resistance of an induction door during operation and has high measurement accuracy.

[0004] To achieve the above object, the present invention adopts the following technical solution: a method for testing resistance during the operation of an induction door, comprising the following steps: S1. The door body of the induction door is suspended on the guide rail through the roller assembly. The induction door motor drives the roller assembly to move along the guide rail through the transmission mechanism. The transmission mechanism includes a transmission wheel. The controller receives the door opening and closing signal to control the induction door motor to drive the transmission wheel to rotate forward and reverse, thereby driving the door body to open and close. S2. Real-time sampling of the busbar current of the induction door motor to infer the friction resistance of the induction door during its operation; When the door body is running at a uniform speed, the friction resistance f=the pulling force of the induction door motor F=M / L; where L is the radius of the driving wheel, the output torque M=KT**I, I is the real-time current of the induction door motor, and KT is the rated output torque constant of the induction door motor after being decelerated by the reducer.

[0005] The present invention truly simulates the operating state of the induction door in actual use, thereby ensuring the accuracy and reliability of the test results; by accurately measuring the motor current and combining the relevant formula to reversely infer the friction resistance, it can more accurately obtain the resistance conditions during the operation of the door body, and has higher accuracy than traditional measurement methods; real-time collection of current data can realize dynamic monitoring of the operating resistance of the induction door, and timely discover changes in resistance, which is helpful to discover potential problems in advance.

[0006] As a preferred step S2, the real-time current I of the induction door motor is collected through the current sampling circuit inside the controller, the Dcur end of the current sampling circuit is connected to the inverter circuit, the GND end is connected to the 0V voltage end of the 24V power supply, RM1 is connected in series to the bus to measure the current of the motor of the induction door motor, and the current signal is amplified by the operational amplifier circuit.

[0007] Preferably, in step S1, the roller assembly is fixed to the synchronous belt, the synchronous belt is sleeved on a plurality of transmission wheels, and the transmission wheels are rotatably fixed to the guide rail side. The fixed connection between the synchronous belt and the roller assembly, and the sleeve of the synchronous belt on the transmission wheel can ensure the stability of the transmission process, reduce the transmission error, thereby improving the stability of the door body operation, and further improving the measurement accuracy.

[0008] Preferably, the door body is supported on the guide rail by at least two roller assemblies, and the roller assemblies are fixed to the synchronous belt. The above arrangement further improves the stability of the door body during movement, enables the weight of the door body to be evenly distributed on the guide rail, reduces the force on a single roller assembly, and reduces the wear rate of the rollers of the roller assembly.

[0009] The invention has the advantages of being easy to test the resistance during the operation of the induction door and having high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the door body, roller assembly, guide rail and transmission mechanism of the induction door of the present invention.

[0011] Figure 2 It is a circuit schematic diagram of a current I sampling circuit of an induction door motor in the present invention. DETAILED DESCRIPTION

[0012] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0013] Depend on Figure 1 and Figure 2 As shown, this embodiment discloses a method for testing resistance during the operation of an induction door, comprising the following steps: S1. The door body 1 of the induction door is suspended on the guide rail 3 through the roller assembly 2. The induction door motor 4 drives the roller assembly 2 to move along the guide rail 3 through the transmission mechanism. The transmission mechanism includes a transmission wheel 51. The controller receives the door opening and closing signal to control the induction door motor 4 to drive the transmission wheel 51 to rotate forward and reverse, thereby driving the door body 1 to realize the door opening and closing action; S2 real-time acquisition of the induction door induction door motor 4 bus current, reverse the induction door body 1 during the operation of the friction resistance; During the uniform speed operation of the door body, the friction resistance f=the pulling force F of the induction door motor=M / L; wherein, L is the radius of the driving wheel 51, which is 0.25m in this embodiment, the output torque M=KT**I, I is the real-time current of the induction door motor, KT is the rated output torque constant of the induction door motor after being decelerated by the reducer, and the torque constant of the induction door industry is 1.25±0.25NM / A; therefore, the pulling force F of the induction door motor=M / L= KT*I / L= KT*I / 0.25=4 KT*I.

[0014] Depend on Figure 2 As shown, in step S3, the real-time current I of the induction door motor is collected through the current sampling circuit inside the controller, the Dcur end of the current sampling circuit is connected to the inverter circuit, the GND end is connected to the 0V voltage end of the 24V power supply, and RM1 is connected in series on the busbar to measure the current of the motor of the induction door motor. Since the overall value of the sampled voltage signal Ui=I*R=I*RM1 is small, the current signal is amplified by the operational amplifier circuit. U6 is an integrated operational amplifier circuit, using the LM358 dual operational amplifier, the 3-pin end of U6 is the same direction input end, the 2-pin end is the reverse input end, and the 1-pin end is the output end; MCU.I is connected to the MCU inside the controller. MCU is a single-chip microcomputer, model STM32F030C8T6, MCU.I is a network node, connected to the pin of the chip to enter the chip, used to measure the current.

[0015] Depend on Figure 1 As shown, the transmission mechanism also includes a synchronous belt 52, which fixes the roller assembly 2 to the synchronous belt 52. The synchronous belt 52 is sleeved on two transmission wheels 51. The transmission wheels 51 are rotatably fixed on the fixed plate 6 and are located on the upper side of the guide rail 3. The fixed plate 6 and the guide rail 3 are fixed. The door body 1 is supported on the guide rail 3 through two roller assemblies 2, and the roller assemblies 2 are fixed to the synchronous belt 52.

[0016] The door body, induction door motor, guide rail and other components of the induction door of this embodiment can use the same components as the product, so that the degree of wear of the roller of the roller assembly of the same batch of induction door bodies at different times of use can be better measured, so as to facilitate regular maintenance and replacement of the rollers; it is also convenient to change the motor output current by setting the program, so as to keep the movement time of the door body of the induction door within the factory setting range; at the same time, real-time collection of current data can realize dynamic monitoring of the running resistance of the induction door, timely discover changes in resistance, and help to discover potential problems in advance.

Claims

1. A method for testing resistance during the operation of an induction door, characterized in that The steps include: S1. The door body of the induction door is suspended on the guide rail through the roller assembly. The induction door motor drives the roller assembly to move along the guide rail through the transmission mechanism. The transmission mechanism includes a transmission wheel. The controller receives the door opening and closing signal to control the induction door motor to drive the transmission wheel to rotate forward and reverse, thereby driving the door body to open and close the door; S2. Real-time sampling of the busbar current of the induction door motor to infer the friction resistance of the induction door during its operation; When the door body is running at a uniform speed, the friction resistance f=the pulling force of the induction door motor F=M / L; where L is the radius of the driving wheel, the output torque M=KT**I, I is the real-time current of the induction door motor, and KT is the rated output torque constant of the induction door motor after being decelerated by the reducer.

2. The method for testing resistance during operation of an induction door according to claim 1, characterized in that: In step S2, the real-time current I of the induction door motor is collected through the current sampling circuit inside the controller, the Dcur end of the current sampling circuit is connected to the inverter circuit, the GND end is connected to the 0V voltage end of the 24V power supply, RM1 is connected in series to the bus to measure the current of the motor of the induction door motor, and the current signal is amplified by the operational amplifier circuit.

3. The method for testing resistance during operation of an induction door according to claim 1, characterized in that: In step S1, the roller assembly is fixed to the synchronous belt, the synchronous belt is sleeved on a plurality of transmission wheels, and the transmission wheels are rotatably fixed to the guide rail side.

4. The method for testing resistance during operation of an induction door according to claim 3, characterized in that: The door body is supported on the guide rail by at least two roller assemblies, and the roller assemblies are fixed to the synchronous belt.

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