Signal acquisition structure of motor

Abstract

The invention provides a signal acquisition structure of a motor, which comprises a motor and a controller, and is characterized in that the motor is internally provided with a first PCB and a second PCB; the signal flow of the signal acquisition structure of the motor is a temperature signal, a speed Hall signal and a gear signal. According to the speed Hall signal, a speed Hall device of the first PCB collects the rotating speed of a motor, and the first PCB processes data and then sends the data to the controller through a CAN communication protocol. After the controller receives the speed Hall signal data, the speed Hall signal data is converted into a gear signal, and then the controller sends the gear signal to the first PCB through a CAN communication protocol. According to the invention, the controller is utilized to convert the speed signal into the gear signal, and then the CAN communication protocol is utilized to send the gear signal to the first PCB, so that the motor can communicate with the controller in terms of gear information besides the temperature and speed signals, and the number of information exchanged between the motor and the controller is increased.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular, to a signal acquisition structure of a motor, and in particular, to an application of a signal acquisition and transmission method integrating two PCB Hall plates and an internal speed change function. Background Art

[0002] At present, the signal connection between the traditional motor and the external controller is as follows Figure 1 As shown, the Hall signal collection and transmission in the traditional motor is a PCB, and the speed and temperature signals are transmitted through the signal line. The signal flow is as follows: Temperature and speed signals: The speed and temperature signals are collected by the PD3PCB board speed Hall and NTC thermistor devices and transmitted to the controller MCU through the signal line.

[0003] As can be seen from the above, currently traditional motors can only exchange temperature and speed information with the controller, and have the defect of a small amount of exchanged information. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a signal acquisition structure for a motor.

[0005] A signal acquisition structure of a motor provided by the present invention comprises a motor and a controller, wherein a first PCB board and a second PCB board are arranged inside the motor;

[0006] A CAN high signal line and a CAN low signal line are arranged between the first PCB board and the second PCB board; a CAN high signal line and a CAN low signal line are also arranged between the second PCB board and the controller;

[0007] The signal flow of the motor's signal acquisition structure is:

[0008] Temperature signal: The second PCB collects data and sends it to the first PCB. The first PCB sends the processed data to the controller via the CAN communication protocol.

[0009] Speed ​​Hall signal: The speed Hall device of the first PCB collects the motor speed. After the first PCB processes the data, it sends the data to the controller through the CAN communication protocol.

[0010] Gear position signal: After the controller receives the speed Hall signal data, it converts it into a gear position signal, and then sends the gear position signal to the first PCB board using the CAN communication protocol.

[0011] Preferably, the first PCB board has a first CAN high pin, a first CAN low pin, and a first ground pin;

[0012] The second PCB board has a second CAN high pin, a second CAN low pin, a third CAN high pin, a third CAN low pin, a second ground pin and a third ground pin;

[0013] The controller has a fourth CAN high pin, a fourth CAN low pin and a fourth ground pin;

[0014] The first CAN high pin is connected to the second CAN high pin via a wire; the first CAN low pin is connected to the second CAN low pin via a wire; the first ground pin is connected to the second ground pin via a wire;

[0015] The third CAN high pin is connected to the fourth CAN high pin through a wire; the third CAN low pin is connected to the fourth CAN low pin through a wire; the third ground pin is connected to the fourth ground pin through a wire.

[0016] Preferably, the first PCB board further has a temperature signal receiving pin; the second PCB board further has a temperature signal sending pin.

[0017] Preferably, the first PCB board further has a first voltage emitting pin, and the second PCB board further has a first voltage receiving pin; the first voltage emitting pin and the first voltage receiving pin are connected via a wire.

[0018] Preferably, the first PCB board further has a second voltage receiving pin, and the second PCB board further has a second voltage emitting pin; the second voltage receiving pin is connected to the second voltage emitting pin via a wire.

[0019] Preferably, the second PCB board further has an A signal receiving pin, a B signal receiving pin and a C signal receiving pin;

[0020] The controller also has an A signal sending pin, a B signal sending pin and a C signal sending pin;

[0021] The A signal receiving pin, the B signal receiving pin and the C signal receiving pin are respectively connected to the A signal sending pin, the B signal sending pin and the C signal sending pin through wires.

[0022] Preferably, the second PCB board further has an HA signal sending pin, an HB signal sending pin and an HC signal sending pin;

[0023] The controller also has a HA signal receiving pin, a HB signal receiving pin and a HC signal receiving pin;

[0024] The HA signal sending pin, the HB signal sending pin and the HC signal sending pin are respectively connected to the HA signal receiving pin, the HB signal receiving pin and the HC signal receiving pin through wires.

[0025] Preferably, the second PCB board further has a third voltage receiving pin, and the controller further has a third voltage sending pin;

[0026] The third voltage receiving pin is connected to the third voltage sending pin through a wire.

[0027] Preferably, the first voltage of the first voltage output pin is 5V.

[0028] Preferably, the second voltage of the second voltage output pin is 36V or 48V;

[0029] The third voltage of the third voltage output pin is 36V or 48V.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention utilizes a controller to convert a speed signal into a gear signal, and then utilizes a CAN communication protocol to send the gear signal to a first PCB board, so that the motor can communicate with the controller about gear information in addition to temperature and speed signals, thereby increasing the amount of information exchanged between the motor and the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 It is a structural schematic diagram of the prior art;

[0034] Figure 2 It is a structural schematic diagram of the present invention;

[0035] Figure 3 This is a circuit board functional circuit module diagram of the second PCB board.

[0036] The figure shows:

[0037]

[0038] DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0040] The present invention provides a signal acquisition structure of a motor, such as Figure 2 As shown, it includes a motor 1 and a controller 2, wherein a first PCB board 11 and a second PCB board 12 are arranged inside the motor 1;

[0041] A CAN high signal line and a CAN low signal line are arranged between the first PCB board 11 and the second PCB board 12; a CAN high signal line and a CAN low signal line are also arranged between the second PCB board 12 and the controller 2;

[0042] The signal flow of the motor's signal acquisition structure is:

[0043] Temperature signal: the second PCB board 12 collects data and sends it to the first PCB board 11, and the first PCB board 11 sends the processed data to the controller 2 through the CAN communication protocol.

[0044] Speed ​​Hall signal: The speed Hall device of the first PCB board 11 collects the motor speed. After the first PCB board 11 processes the data, it sends the data to the controller through the CAN communication protocol.

[0045] Gear position signal: After the controller receives the speed Hall signal data, it converts it into a gear position signal, and the controller 2 then sends the gear position signal to the first PCB board 11 using the CAN communication protocol.

[0046] Specifically, the signal acquisition structure of the motor includes a motor 1 and a controller 2. A first PCB board 11 and a second PCB board 12 are arranged inside the motor 1; the first PCB board 11 has a first CAN high pin 111, a first CAN low pin 112, and a first ground pin 113;

[0047] The second PCB board 12 has a second CAN high pin 121, a second CAN low pin 122, a third CAN high pin 123, a third CAN low pin 124, a second ground pin 125 and a third ground pin 126;

[0048] The controller 2 has a fourth CAN high pin 21, a fourth CAN low pin 22 and a fourth ground pin 23; the first CAN high pin 111 is connected to the second CAN high pin 121 through a wire; the first CAN low pin 112 is connected to the second CAN low pin 122 through a wire; the first ground pin 113 is connected to the second ground pin 125 through a wire;

[0049] The third CAN high pin 123 is connected to the fourth CAN high pin 21 through a wire; the third CAN low pin 124 is connected to the fourth CAN low pin 22 through a wire; the third ground pin 126 is connected to the fourth ground pin 23 through a wire.

[0050] The first PCB board 11 further has a temperature signal receiving pin 114; the second PCB board 12 further has a temperature signal sending pin 127; the temperature signal receiving pin 114 is connected to the temperature signal sending pin 127 via a wire.

[0051] The first PCB board 11 further has a first voltage emitting pin 115, and the second PCB board 12 further has a first voltage receiving pin 128; the first voltage emitting pin 115 is connected to the first voltage receiving pin 128 via a wire; and the first voltage is 5V.

[0052] The first PCB board 11 further has a second voltage receiving pin 116, and the second PCB board 12 further has a second voltage emitting pin 129; the second voltage receiving pin 116 is connected to the second voltage emitting pin 129 via a wire; the second voltage is 36V or 48V.

[0053] The second PCB board 12 also has an A signal receiving pin 1210, a B signal receiving pin 1211 and a C signal receiving pin 1212; the controller 2 also has an A signal sending pin 24, a B signal sending pin 25 and a C signal sending pin 26; the A signal receiving pin 1210, the B signal receiving pin 1211 and the C signal receiving pin 1212 are respectively connected to the A signal sending pin 24, the B signal sending pin 25 and the C signal sending pin 26 through wires;

[0054] The second PCB board 12 also has a HA signal sending pin 1213, a HB signal sending pin 1214 and a HC signal sending pin 1215; the controller 2 also has a HA signal receiving pin 27, a HB signal receiving pin 28 and a HC signal receiving pin 29;

[0055] The HA signal sending pin 1213, the HB signal sending pin 1214 and the HC signal sending pin 1215 are respectively connected to the HA signal receiving pin 27, the HB signal receiving pin 28 and the HC signal receiving pin 29 through wires;

[0056] The second PCB board 12 also has a third voltage receiving pin 1216, and the controller 2 also has a third voltage sending pin 291; the third voltage receiving pin 1216 is connected to the third voltage sending pin 291 through a wire. The third voltage is 36V or 48V.

[0057] The circuit board functional circuit module of the second PCB board 12 is shown in FIG. Figure 3 As shown, it includes three position Hall modules for detecting Hall positions, a thermistor for detecting temperature signals, a 5V protection circuit, and a power supply filter circuit.

[0058] In the present invention, two PCB boards are required for the collection and transmission of the speed Hall signal, the temperature signal and the gear position signal; specifically, the speed Hall signal, the temperature signal and the gear position signal are transmitted via CAN communication.

[0059] The signal flow of the present invention is:

[0060] Temperature signal: The NTC thermistor device on the second PCB board 12 (i.e., PD2PCB board) collects data and sends it to the MCU on the first PCB board 11 (i.e., PD1PCB board) for processing. The MCU on the PD1PCB board sends the processed data to the MCU on the controller 2 via the CAN communication protocol.

[0061] Speed ​​Hall signal: After the speed Hall device of the first PCB board 11 (i.e., PD1PCB board) collects the motor speed, the MCU of the PD1PCB board processes the data and sends the data to the controller MCU through the CAN communication protocol.

[0062] Gear position signal: After the MCU of the controller receives the speed Hall signal data, it will convert it into a gear position signal. The MCU of controller 2 will then send the gear position signal to the PD1 PCB board using the CAN communication protocol.

[0063] Compared with the traditional motor structure, the present invention has one more gear signal, so the motor includes an internal speed change function. This integrates two PCB Hall plates and the internal speed change function, and can collect one more gear signal by using the CAN communication protocol to collect signals; and the signal stability can be guaranteed by using the CAN communication protocol for transmission. The integrated internal speed change function signal collection has the characteristics of many signals and stable signals; the present invention can be further designed to collect more signals, use the CAN communication protocol to ensure signal stability, save signal lines, etc., especially in some application environments where many signals are collected, the present invention has broad application prospects and space. Specifically, the CAN communication protocol is currently used to transmit speed temperature and gear signals with two signal lines. If more signals are added in the future, multiple signals can also be transmitted using these two CAN communication lines, that is, when more signals are added, each signal does not need to correspond to a data line, but multiple signals correspond to these two CAN communication lines, that is, multiple signals are reduced. The signal lines are reduced, the difficulty of system routing is reduced, and the overall complexity is reduced. Technical effects.

[0064] Traditionally, one Hall plate only collects speed and temperature signals. The present invention integrates two PCB Hall plates in the motor. In addition to collecting temperature and gear position signals, it also integrates the internal speed change function to collect speed. The present invention uses the CAN communication protocol to transmit speed, temperature and gear position signals.

[0065] Compared with the traditional motor, the present invention has one more PCB board, and compared with the traditional Hall plate multi-gear signal, the present invention has an additional internal speed change function. Compared with the traditional Hall plate signal transmitted by signal line, the integrated internal speed change function signal is transmitted by CAN communication, which can make the transmission more stable.

[0066] In summary, the present invention integrates two PCB Hall plates and an internal speed change function, adds a gear signal and replaces the signal line to transmit the signal, and uses the CAN communication protocol to transmit the signal, which provides a basis for adding motor functions and designing multi-signal acquisition in the future, and has broad application prospects.

[0067] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A signal acquisition structure of a motor, characterized in that: It comprises a motor (1) and a controller (2), wherein a first PCB board (11) and a second PCB board (12) are arranged inside the motor (1); A CAN high signal line and a CAN low signal line are arranged between the first PCB board (11) and the second PCB board (12); a CAN high signal line and a CAN low signal line are also arranged between the second PCB board (12) and the controller (2); The signal flow of the motor's signal acquisition structure is: Temperature signal: the second PCB board (12) collects data and sends it to the first PCB board (11), and the first PCB board (11) sends the processed data to the controller (2) via the CAN communication protocol; Speed ​​Hall signal: the speed Hall device of the first PCB board (11) collects the motor speed, and after the first PCB board (11) processes the data, it sends the data to the controller through the CAN communication protocol; Gear position signal: After the controller receives the speed Hall signal data, it converts it into a gear position signal, and the controller (2) then sends the gear position signal to the first PCB board (11) using the CAN communication protocol.

2. The signal acquisition structure of the motor according to claim 1, characterized in that: The first PCB board (11) has a first CAN high pin (111), a first CAN low pin (112), and a first ground pin (113); The second PCB board (12) has a second CAN high pin (121), a second CAN low pin (122), a third CAN high pin (123), a third CAN low pin (124), a second ground pin (125) and a third ground pin (126); The controller (2) has a fourth CAN high pin (21), a fourth CAN low pin (22) and a fourth ground pin (23); The first CAN high pin (111) and the second CAN high pin (121) are connected via a wire; the first CAN low pin (112) and the second CAN low pin (122) are connected via a wire; the first ground pin (113) and the second ground pin (125) are connected via a wire; The third CAN high pin (123) is connected to the fourth CAN high pin (21) via a wire; the third CAN low pin (124) is connected to the fourth CAN low pin (22) via a wire; and the third ground pin (126) is connected to the fourth ground pin (23) via a wire.

3. The signal acquisition structure of the motor according to claim 1, characterized in that: The first PCB board (11) also has a temperature signal receiving pin (114); the second PCB board (12) also has a temperature signal sending pin (127); the temperature signal receiving pin (114) and the temperature signal sending pin (127) are connected via a wire.

4. The signal acquisition structure of the motor according to claim 1, characterized in that: The first PCB board (11) further has a first voltage emitting pin (115), and the second PCB board (12) further has a first voltage receiving pin (128); the first voltage emitting pin (115) and the first voltage receiving pin (128) are connected via a wire.

5. The signal acquisition structure of the motor according to claim 4, characterized in that: The first PCB board (11) further has a second voltage receiving pin (116), and the second PCB board (12) further has a second voltage emitting pin (129); the second voltage receiving pin (116) and the second voltage emitting pin (129) are connected via a wire.

6. The signal acquisition structure of the motor according to claim 1, characterized in that: The second PCB board (12) further comprises an A signal receiving pin (1210), a B signal receiving pin (1211) and a C signal receiving pin (1212); The controller (2) further comprises an A signal sending pin (24), a B signal sending pin (25) and a C signal sending pin (26); The A signal receiving pin (1210), the B signal receiving pin (1211) and the C signal receiving pin (1212) are respectively connected to the A signal sending pin (24), the B signal sending pin (25) and the C signal sending pin (26) via wires.

7. The signal acquisition structure of the motor according to claim 1, characterized in that: The second PCB board (12) further comprises an HA signal sending pin (1213), an HB signal sending pin (1214) and an HC signal sending pin (1215); The controller (2) further comprises an HA signal receiving pin (27), an HB signal receiving pin (28) and an HC signal receiving pin (29); The HA signal sending pin (1213), the HB signal sending pin (1214) and the HC signal sending pin (1215) are respectively connected to the HA signal receiving pin (27), the HB signal receiving pin (28) and the HC signal receiving pin (29) via wires.

8. The signal acquisition structure of the motor according to claim 5, characterized in that: The second PCB board (12) further has a third voltage receiving pin (1216), and the controller (2) further has a third voltage sending pin (291); The third voltage receiving pin (1216) is connected to the third voltage emitting pin (291) via a wire.

9. The signal acquisition structure of the motor according to claim 4, characterized in that: The first voltage of the first voltage output pin (115) is 5V.

10. The signal acquisition structure of the motor according to claim 8, characterized in that: The second voltage of the second voltage output pin (129) is 36V or 48V; The third voltage of the third voltage output pin (291) is 36V or 48V.

Images