An electric roller, a logistics package sorting trolley and a logistics package sorting system

Abstract

The embodiment of the present application provides an electric roller, a logistics parcel sorting trolley and a logistics parcel sorting system, a driver of the electric roller is arranged in the electric roller, the driver comprises a sampling control board, an encoder and a micro control unit of the electric roller are arranged on the sampling control board; the encoder sends the collected angle information to the micro control unit through a circuit board printed line of the sampling control board, and the micro control unit controls rotation of the electric roller according to the angle information. Through the embodiment of the present application, the driver of the electric roller is built-in, the encoder and the micro control unit are arranged on the same printed circuit board, the encoder and the micro control unit perform signal transmission through the circuit board printed line on the same printed circuit board, the reliability of signal transmission is improved, the failure probability is reduced, and an external driver circuit and an external shell do not need to be arranged, so that the cost of the whole electric roller and the driving system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of logistics, in particular to an electric roller, a logistics parcel sorting trolley and a logistics parcel sorting system. BACKGROUND

[0002] In the logistics scenario, the electric roller plays a key role in logistics parcel sorting and the like. The rotation of the electric roller drives the sliding of the conveying belt of the trolley on the sorting machine, so as to realize the movement of the logistics parcel on the trolley.

[0003] In order to realize accurate parcel loading and unloading operations, the rotation speed and torque of the roller need to be controlled in a closed loop. A key index involved in the closed loop control is angle information, i.e. the angle turned by the roller. If the angle information is not measured accurately, on the one hand, the driving algorithm efficiency will be reduced and the motor will overheat seriously, and on the other hand, the torque control will not be good and the roller will vibrate, so that the parcel cannot realize accurate loading and unloading operations.

[0004] However, the existing electric roller is driven by an external driver and a sensor for collecting angle information is arranged inside the roller. In this case, the built-in encoder signal (i.e. the collected angle information) is converted into a single-ended differential signal and output to an interface, is collected through the interface at the external driver end, is converted into a differential signal and then enters the MCU (Microcontroller Unit) of the driver for feedback sampling. Although the use of the differential signal transmission improves the anti-interference ability to a certain extent, the signal is converted twice and two connectors are used, which has a certain failure probability and is prone to failure of the entire driving device, such as damage of the encoder, looseness of the interface, abnormality of angle sampling, and thus the roller stops rotating, vibrates and overheats. SUMMARY

[0005] In view of the above problems, an electric roller, a logistics parcel sorting trolley and a logistics parcel sorting system are provided to overcome the above problems or at least partially solve the above problems, comprising:

[0006] An electric roller, a driver of the electric roller is arranged inside the electric roller, the driver includes a sampling control board, and an encoder and a micro control unit of the electric roller are arranged on the sampling control board.

[0007] The encoder sends the collected angle information to the micro control unit through the printed circuit board line of the sampling control board, and the micro control unit controls the rotation of the electric roller according to the angle information.

[0008] Optionally, the driver further includes a driving board, and the sampling control board provides a driving control signal for the driving board.

[0009] The driving plate is in direct or indirect contact with the bearing end surface of the motorized roller.

[0010] Optionally, the driving plate is provided with a driving circuit, and a MOS tube on the driving circuit is arranged on the side in direct or indirect contact with the bearing end surface of the motorized roller.

[0011] Optionally, the driving plate and the bearing end surface of the motorized roller are connected through heat-conducting silica gel.

[0012] Optionally, the area of the bearing end surface of the motorized roller is greater than a preset area value.

[0013] Optionally, the driver further comprises a power board connected with an external power supply through a power line, for providing power supply for the sampling control board and the driving plate.

[0014] Optionally, the power board is arranged between the sampling control board and the driving plate.

[0015] Optionally, the angle sampling magnetic steel of the encoder and the motor control magnetic steel are separated from each other.

[0016] A logistics parcel sorting trolley comprises the motorized roller drive as above, and a conveying belt driven by the motorized roller.

[0017] A logistics parcel sorting system comprises the logistics parcel sorting trolley as above.

[0018] The embodiments of the present application have the following advantages:

[0019] In the embodiments of the present application, the driver of the motorized roller is arranged inside the motorized roller, the driver comprises a sampling control board, and the encoder and the micro control unit of the motorized roller are arranged on the sampling control board; the encoder sends the collected angle information to the micro control unit through the circuit board printed line of the sampling control board, and the micro control unit controls the rotation of the motorized roller according to the angle information, which realizes the built-in driver of the motorized roller and the arrangement of the encoder and the micro control unit on the same printed circuit board, the circuit board printed line of the encoder and the micro control unit on the same printed circuit board for signal transmission, improves the reliability of signal transmission, reduces the failure probability, and does not need to arrange an external driver circuit and an external shell, thereby reducing the cost of the complete motorized roller and the driving system. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the description of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1This is a schematic diagram of an electric roller provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a logistics parcel sorting cart provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a logistics parcel sorting system provided in an embodiment of the present invention. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Reference Figure 1 The diagram shows a schematic of an electric drum according to an embodiment of the present invention. The electric drum may include a shaft and bearings, an outer rotor and stator windings, and a driver.

[0026] The driver for the electric roller is located inside the electric roller. The driver can consist of three PCBs (Printed Circuit Boards), specifically a sampling control board, a driver board, and a power supply board.

[0027] For the sampling control board:

[0028] The encoder and microcontroller unit of the electric roller are deployed on the sampling control board.

[0029] The encoder is used to collect the angle information of the electric drum rotation, and the microcontroller can generate a drive control signal based on the received angle information and send it to the drive board, thereby controlling the rotation of the electric drum through the drive board.

[0030] Specifically, the encoder sends the collected angle information to the microcontroller unit via the printed circuit board lines of the sampling control board, and the microcontroller unit controls the rotation of the electric roller according to the angle information.

[0031] In this embodiment of the invention, by deploying the encoder and microcontroller unit on the same printed circuit board, the external interfaces are limited to a power interface and a differential communication interface (differential communication signal used for communication between the driver and the external controller). The encoder and microcontroller unit communicate via short traces on the printed circuit board, and the addition of grounding lines enhances anti-interference capabilities. This eliminates the need for conversion to intermediate differential levels for interference suppression, improving signal transmission reliability, reducing the failure rate, and eliminating the need for external driver circuitry and housings, thus lowering the overall cost of the electric roller and drive system.

[0032] In one embodiment of the present invention, the encoder's angle sampling magnet (such as...) Figure 1 Encoder magnets and motor control magnets (such as encoder magnets) ... Figure 1 The rotor magnets are separated from each other.

[0033] For the driver board:

[0034] The sampling control board provides drive control signals to the drive board. For example, the sampling control board provides drive control signals U+, U-, V+, V-, W+, and W- to the drive board. At the same time, it collects current signals IU and IV and temperature signals from the drive board. The drive board can then control the rotation of the electric drum according to the drive control signals. Specifically, the drive board can be connected to the stator winding through a power connection line and control the rotation by sending signals to the stator winding.

[0035] The drive board can be in direct or indirect contact with the bearing end face of the electric roller. Specifically, the drive board is equipped with a drive circuit, and the MOSFET on the drive circuit is located on the side that is in direct or indirect contact with the bearing end face.

[0036] In one embodiment of the present invention, the bearing end face of the drive board and the electric roller is connected by thermally conductive silicone. Specifically, the MOS transistor on the drive circuit can be connected to the bearing end face by thermally conductive silicone.

[0037] In this embodiment of the invention, by setting the bearing end face of the drive board and the electric drum to be in direct or indirect contact, the heat generated by the MOS transistor in the drive circuit can be dissipated through the bearing end face, thereby reducing the heat inside the drum.

[0038] Furthermore, since the drive plate and the bearing end of the electric drum are in direct or indirect contact, the drive plate is close to the bearing end face and far away from the stator winding. The heat generated on the winding is less likely to be transferred to the drive circuit, which reduces the impact on the drive circuit and improves the service life of the components.

[0039] In one embodiment of the present invention, the area of ​​the bearing end face of the electric drum is greater than a preset area value, such as 80% of the cross-section of the electric drum. By increasing the area of ​​the bearing end face, the heat dissipation capacity can be improved.

[0040] During the operation of an electric drum, in addition to the useful work of the drum's rotation, there is also a significant amount of useless work consumed as heat. This useless work greatly affects the drum's energy conversion efficiency. When the mechanical work increases and the current increases, the components of the useless work that generate heat are: copper losses in the winding coils, conduction losses of the MOSFET, and switching losses of the MOSFET. Other components, including iron losses and controller losses, account for a smaller proportion. These can be calculated using the following formula:

[0041]

[0042]

[0043]

[0044] Among them, P 铜损 For the copper loss of the winding coil, P MOS导通 For the conduction loss of the MOSFET, P MOS开关 For the switching loss of the MOSFET, I m R is the maximum current flowing through the winding. 绕组 R is the resistance value of the internal windings of the motor. dson V represents the on-resistance value of the MOSFET built into the driver. dc T is the power supply voltage for the driver, and T is the period during which the driver drives the MOSFET; T r This represents the rise time of the MOSFET.

[0045] For example, the heat loss of an electric drum under full load can be divided into the following proportions: copper loss of the winding coil accounts for 49%, MOSFET conduction loss accounts for 12%, MOSFET switching loss accounts for 35%, and others account for 4%. That is to say, copper loss of the winding coil accounts for nearly half, and the remaining half is almost entirely occupied by the conduction and switching losses of the MOSFET.

[0046] In this embodiment of the invention, by setting the bearing end face of the drive board and the electric drum to be in direct or indirect contact, the heat generated by the MOSFET in the drive circuit can be dissipated through the bearing end face, thereby reducing the heat inside the drum. Moreover, since the drive board and the bearing end face of the electric drum are in direct or indirect contact, the drive board is close to the bearing end face and far away from the stator winding, making it difficult for the heat generated on the winding to be transferred to the drive circuit, thus reducing the impact on the drive circuit.

[0047] For the power board:

[0048] The power board is connected to an external power source via a power cord to provide power to the sampling control board and the driver board. For example, the power board provides 3.3V and 5V power to the sampling control board and 48V, 15V, 5V, and 3.3V power to the driver board.

[0049] In one embodiment of the present invention, the power supply board is disposed between the sampling control board and the drive board, that is, the drive board, the power supply board, and the sampling control board are deployed sequentially from the bearing end face. Of course, the power supply board can also be disposed before the control board.

[0050] In this embodiment of the invention, the driver of the electric roller is located inside the electric roller. The driver includes a sampling control board, and the encoder and microcontroller of the electric roller are deployed on the sampling control board. The encoder sends the collected angle information to the microcontroller through the printed lines of the circuit board of the sampling control board. The microcontroller controls the rotation of the electric roller according to the angle information. This realizes the integration of the electric roller driver and the deployment of the encoder and microcontroller on the same printed circuit board. The encoder and microcontroller transmit signals through the printed lines of the circuit board on the same printed circuit board, which improves the reliability of signal transmission, reduces the probability of failure, and eliminates the need to deploy external driver circuits and housings, thereby reducing the cost of the entire electric roller and drive system.

[0051] Reference Figure 2 The diagram shows a schematic of a logistics parcel sorting cart according to an embodiment of the present invention. The logistics parcel sorting cart includes the electric roller drive as described above, and a conveyor belt driven by the electric roller.

[0052] like Figure 2 The electric rollers of the logistics parcel sorting trolley can include a driving roller and a driven roller. The conveyor belt can be a trolley belt. The driving roller is controlled to rotate by a motor driver, and the driven roller drives the trolley belt to rotate, thereby realizing the movement of parcels on the trolley.

[0053] The driver for the electric roller is located inside the electric roller. The driver includes a sampling control board, and the encoder and microcontroller unit of the electric roller are deployed on the sampling control board.

[0054] The encoder sends the collected angle information to the microcontroller unit via the printed lines on the circuit board of the sampling control board. The microcontroller unit controls the rotation of the electric roller based on the angle information.

[0055] In one embodiment of the present invention, the driver further includes a drive board, and the sampling control board provides drive control signals to the drive board; the drive board is in direct or indirect contact with the bearing end face of the electric roller.

[0056] In one embodiment of the present invention, the driving board is provided with a driving circuit, and the MOS transistor on the driving circuit is disposed on the side that is in direct or indirect contact with the bearing end face.

[0057] In one embodiment of the present invention, the bearing end faces of the drive plate and the electric drum are connected by thermally conductive silicone.

[0058] In one embodiment of the present invention, the area of ​​the bearing end face of the electric roller is greater than a preset area value.

[0059] In one embodiment of the present invention, the driver further includes a power board, which is connected to an external power supply via a power line to provide power to the sampling control board and the driver board.

[0060] In one embodiment of the present invention, the power supply board is disposed between the sampling control board and the driver board.

[0061] In one embodiment of the present invention, the encoder's angle sampling magnet and the motor control magnet are separated from each other.

[0062] Reference Figure 3 The diagram shows a schematic of a logistics parcel sorting system according to an embodiment of the present invention. The logistics parcel sorting system includes the logistics parcel sorting trolley as shown above.

[0063] like Figure 3 The logistics parcel sorting system can be a cross-belt sorter. There are several upper packaging openings on the main ring for parcels to move upwards. There are several sorting trolleys on the main ring. As the main ring rotates, the trolleys rotate on the main ring. When the parcel on the trolley moves to the correct lower packaging opening, the trolley motor driver drives the motor to rotate, which in turn drives the belt on the trolley to rotate, so that the parcel moves on the trolley and is delivered to the correct lower packaging opening for sorting.

[0064] The driver for the electric roller is located inside the electric roller. The driver includes a sampling control board, and the encoder and microcontroller unit of the electric roller are deployed on the sampling control board.

[0065] The encoder sends the collected angle information to the microcontroller unit via the printed lines on the circuit board of the sampling control board. The microcontroller unit controls the rotation of the electric roller based on the angle information.

[0066] In one embodiment of the present invention, the driver further includes a drive board, and the sampling control board provides drive control signals to the drive board; the drive board is in direct or indirect contact with the bearing end face of the electric roller.

[0067] In one embodiment of the present invention, the driving board is provided with a driving circuit, and the MOS transistor on the driving circuit is disposed on the side that is in direct or indirect contact with the bearing end face.

[0068] In one embodiment of the present invention, the bearing end faces of the drive plate and the electric drum are connected by thermally conductive silicone.

[0069] In one embodiment of the present invention, the area of ​​the bearing end face of the electric roller is greater than a preset area value.

[0070] In one embodiment of the present invention, the driver further includes a power board, which is connected to an external power supply via a power line to provide power to the sampling control board and the driver board.

[0071] In one embodiment of the present invention, the power supply board is disposed between the sampling control board and the driver board.

[0072] In one embodiment of the present invention, the encoder's angle sampling magnet and the motor control magnet are separated from each other.

[0073] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation portals are provided for users to choose to authorize or refuse.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including, but not limited to, disk storage, compact optical disc read-only storage, optical storage, etc.) containing computer-usable program code.

[0076] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0077] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxesFigure 1 The function specified in one or more boxes.

[0078] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0079] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0080] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0081] The electric roller, logistics parcel sorting trolley, and logistics parcel sorting system provided above have been described in detail. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electric roller, characterized in that, The driver of the electric roller is located inside the electric roller, and the driver includes a sampling control board, on which the encoder and microcontroller unit of the electric roller are deployed; The encoder sends the collected angle information to the microcontroller unit via the printed lines of the circuit board of the sampling control board, and the microcontroller unit controls the rotation of the electric roller according to the angle information; The driver also includes a driver board, and the sampling control board provides a drive control signal to the driver board, while simultaneously acquiring current signals and temperature signals of IU and IV from the driver board; The drive plate is in direct or indirect contact with the bearing end face of the electric drum.

2. The electric roller according to claim 1, characterized in that, The drive board is equipped with a drive circuit, and the MOS transistor on the drive circuit is located on the side that is in direct or indirect contact with the bearing end face.

3. The electric roller according to claim 2, characterized in that, The drive plate and the bearing end faces of the electric drum are connected by thermally conductive silicone.

4. The electric roller according to claim 2, characterized in that, The bearing end face area of ​​the electric drum is greater than the preset area value.

5. The electric roller according to claim 1, characterized in that, The driver also includes a power board, which is connected to an external power source via a power cable to provide power to the sampling control board and the driver board.

6. The electric roller according to claim 5, characterized in that, The power supply board is located between the sampling control board and the drive board.

7. The electric roller according to claim 1, characterized in that, The encoder's angle sampling magnet and motor control magnet are separate from each other.

8. A logistics parcel sorting cart, characterized in that, The logistics parcel sorting trolley includes an electric roller drive as described in any one of claims 1 to 7, and a conveyor belt driven by the electric roller.

9. A logistics parcel sorting system, characterized in that, The logistics parcel sorting system includes the logistics parcel sorting cart as described in claim 8.

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