CN216904709U

CN216904709U - Brushless motor lift table controlgear based on RS485 bus formula communication

Info

Publication number: CN216904709U
Application number: CN202123254870.6U
Authority: CN
Inventors: 谭宇辰; 舒逢楠; 袁野
Original assignee: Zhejiang Jiecang Linear Motion Technology Co Ltd
Current assignee: Zhejiang Jiecang Linear Motion Technology Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-07-05
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a brushless motor lifting table control device based on RS485 bus type communication, which comprises: the power supply unit is connected with alternating current commercial power and comprises a plurality of universal interfaces; the operation unit is connected with the power supply unit through a universal interface and used for outputting a control instruction and receiving a feedback signal; the driving unit is connected with the motor, is connected with the power supply unit through a universal interface, and is used for controlling the motor according to the received control signal and outputting a feedback signal; and the general interface contains an RS485 communication interface and a direct current power supply interface. The beneficial effects of the utility model include: the number of the control motors can be expanded, and is not limited by pin resources of an original control box MCU; therefore, the sockets are unified, and all external devices can be randomly plugged according to any sequence; the power of the power supply can be expanded, and performance reduction caused by insufficient power under the condition of system overload is prevented.

Description

Brushless motor lift table controlgear based on RS485 bus formula communication

Technical Field

The utility model relates to the field of motor control, in particular to brushless motor lifting table control equipment based on RS485 bus type communication.

Background

Traditional lift table control system, control mode all adopt integrated control box direct control's form basically, with switching power supply, motor drive integration in a control box, with hand controller, motor and control box connection simultaneously. The electrical connection of the motor and the control box needs to include: the motor phase line, HALL signal line, HALL power cord, the motor all adopts the brush motor.

The connection of the motor and the electric appliance of the integrated control box at least needs a motor phase line, an HALL signal line and an HALL power line, and the integrated control box has large volume due to the large number of interface lines; the motor drive needs to be realized by the master control MCU, the pin resource consumption of the master control MCU is huge when the number of the motors is large, the resource for expansion is limited, and the expansibility is extremely low.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems of large size, high cost and poor expansibility in the prior art, the utility model provides the brushless motor lifting table control device based on RS485 bus type communication, wherein a motor driving circuit of an integrated controller main control board is stripped, and a universal interface is used for connecting with a power supply unit, so that the expansibility is greatly improved, and the volume of the power supply unit is also reduced.

The technical scheme of the utility model is as follows.

The utility model provides a brushless motor goes up and down table controlgear based on RS485 bus type communication, includes:

the power supply unit is connected with alternating current commercial power and comprises a plurality of universal interfaces;

the operation unit is connected with the power supply unit through a universal interface and is used for outputting a control instruction and receiving a feedback signal;

the driving unit is connected with the motor, is connected with the power supply unit through a universal interface, and is used for controlling the motor according to the received control signal and outputting a feedback signal;

and the general interface contains an RS485 communication interface and a direct current power supply interface.

The universal interface of the utility model contains an RS485 communication interface and a direct current power supply interface, can realize random plug-in of external equipment, and greatly improves the expansibility.

Preferably, the universal interface includes four pins, which are respectively: pin 1-GND, pin 2-VBUS, pin 3-485-A and pin 4-485-B; and pins with the same number are connected among all the universal interfaces of the same power supply unit through an OR resistor.

Preferably, the number of the power supply units is multiple, and the multiple power supply units are connected through a common interface. The power of the power supply can be expanded, and the performance reduction caused by insufficient power under the condition of system overload is prevented; and furthermore, the number of the controlled motors can be expanded, and the pin resource limitation of a single power supply unit MCU is avoided.

Preferably, the processor of the operation unit adopts STM32G070, and a UART interface of the processor is connected with an SP485E chip, so as to realize conversion from the UART interface to an RS485 communication interface. The SP485E chip is used for converting the UART interface into the RS485 communication interface so as to be matched with a general interface, realize the effect of random splicing and improve the expansibility.

Preferably, the STSTSPIN 32F0A is adopted by a processor of the motor, and a UART interface of the processor is connected with the SP485E chip and is used for converting the UART interface into an RS485 communication interface. The SP485E chip is used for converting a UART interface into an RS485 communication interface so as to be matched with a general interface, realize the effect of random splicing and improve the expansibility.

The beneficial effects of the utility model include: the number of the control motors can be expanded, and is not limited by pin resources of an original control box MCU; therefore, the sockets are unified, and all external devices can be randomly plugged according to any sequence; the power of the power supply can be expanded, and performance reduction caused by insufficient power under the condition of system overload is prevented.

Drawings

FIG. 1 is a schematic diagram of a device connection according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a pin location of a power supply unit according to an embodiment of the utility model;

FIG. 3 is a pin definition diagram according to an embodiment of the utility model;

FIG. 4 is a schematic circuit diagram of a drive unit of an embodiment of the present invention;

fig. 5 is a circuit schematic diagram of an RS485 network module according to an embodiment of the utility model.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present invention.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

Example (b):

a brushless motor lift table controlgear based on RS485 bus formula communication, as shown in figure 1, includes:

the operator is connected with the power supply unit through a universal interface and is used for outputting a control instruction and receiving a feedback signal;

the driving plate is connected with the motor/motor, is connected with the power supply unit through a universal interface, and is used for controlling the motor according to the received control signal and outputting a feedback signal;

as shown in fig. 2 and fig. 3, the universal interface of the present invention includes an RS485 communication interface and a dc power supply interface, which can realize random plug-in of an external device, thereby greatly improving the extensibility.

The universal interface comprises four pins which are respectively: pin 1-GND, pin 2-VBUS, pin 3-485-A and pin 4-485-B; and pins with the same number are connected among all the universal interfaces of the same power supply unit through an OR resistor.

Fig. 4 is a schematic diagram of the driving board circuit of the present embodiment for driving the motor/generator.

The power supply units of the embodiment are multiple, and the multiple power supply units are connected through a universal interface. The power of the power supply can be expanded, and the performance reduction caused by insufficient power under the condition of system overload is prevented; and furthermore, the number of the controlled motors can be expanded, and the pin resource limitation of a single power supply unit MCU is avoided.

The processor of the manipulator of the embodiment adopts STM32G070, and the UART interface of the processor is connected with the SP485E chip and is used for converting the UART interface into an RS485 communication interface. The SP485E chip is used for converting a UART interface into an RS485 communication interface so as to be matched with a general interface, realize the effect of random splicing and improve the expansibility.

The processor of the motor adopts STSTSPIN 32F0A, and the UART interface of the processor is connected with the SP485E chip and used for converting the UART interface into an RS485 communication interface. The SP485E chip is used for converting a UART interface into an RS485 communication interface so as to be matched with a general interface, realize the effect of random splicing and improve the expansibility. As shown in fig. 5, it is an SP485E chip and its operating circuit.

In this embodiment, the physical layer of the communication interface forming the bus network CAN be changed from RS485 to RS232 or CAN. The controlled component can be replaced by a brush motor.

The beneficial effects of this embodiment include: the number of the control motors can be expanded, and is not limited by pin resources of an original control box MCU; therefore, the sockets are unified, and all external devices can be randomly plugged according to any sequence; the power of the power supply can be expanded, and performance reduction caused by insufficient power under the condition of system overload is prevented.

Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions.

Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a brushless motor lift table controlgear based on RS485 bus type communication which characterized in that includes:

the operation unit is connected with the power supply unit through a universal interface and used for outputting a control instruction and receiving a feedback signal;

2. The RS485 bus communication-based brushless motor lifting table control device as claimed in claim 1, wherein the universal interface comprises four pins, respectively: pin 1-GND, pin 2-VBUS, pin 3-485-A and pin 4-485-B; and pins with the same number are connected among all the universal interfaces of the same power supply unit through an OR resistor.

3. The RS485 bus communication-based brushless motor lifting table control device as claimed in claim 2, wherein the number of the power supply units is plural, and the plural power supply units are connected through a common interface.

4. The brushless motor lifting table control device based on RS485 bus type communication of claim 2, wherein a processor of the operation unit adopts STM32G070, and a UART interface of the processor is connected with an SP485E chip, so as to realize conversion from the UART interface to an RS485 communication interface.

5. The RS485 bus communication-based brushless motor lifting table control device as claimed in claim 2, wherein the processor of the motor adopts STSTSTSPIN 32F0A, and the UART interface of the processor is connected with SP485E chip for converting UART interface to RS485 communication interface.