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CN-116358408-B - Magneto-electric angular displacement sensor

CN116358408BCN 116358408 BCN116358408 BCN 116358408BCN-116358408-B

Abstract

The invention belongs to the technical field of angular displacement sensors, in particular to a magneto-electric type angular displacement sensor, which comprises an output interface, a shell, a first rotary bearing, a transmission shaft, a second rotary bearing, a magnet carrier, a magnet main body, a bearing fixing ring main body, a magnetic encoder chip, a circuit board main body, a line card main body and an end cover main body, wherein the magnetic encoder chip is arranged at the middle position of one side surface of the circuit board main body, senses the change of the magnetic field direction parallel to the surface of the magnetic encoder chip and outputs a corresponding angle value by applying an advanced ARM magnetic induction technology and an advanced signal processing technology, the magnetic encoder chip can output a PWM signal, converts the PWM signal into a current signal by a current output module, is also connected to a CPU module by an SPI interface, outputs the current signal to a communication module by corresponding algorithm processing, converts the current signal into a corresponding output type, and is connected with external receiving equipment to realize intelligent high-precision angle measurement.

Inventors

  • ZHU WENBO
  • CAI JIAXIN
  • WANG YUYING

Assignees

  • 西安子国微科技有限公司

Dates

Publication Date
20260505
Application Date
20230412

Claims (8)

  1. 1. The magneto-electric angular displacement sensor is characterized by comprising an output interface, a shell (3), a first rotary bearing (4), a transmission shaft (5), a second rotary bearing (6), a magnet carrier (7), a magnet main body (8), a bearing fixing ring body (9), a magnetic encoder chip (11), a circuit board body (12), a line card main body (15) and an end cover body (16), wherein the magnetic encoder chip (11) is arranged at the middle position of one side surface of the circuit board body (12), the shell (3) and the end cover body (16) are fixedly connected through an end cover fastening screw (17), and the first rotary bearing (4), the transmission shaft (5), the second rotary bearing (6), the magnet carrier (7), the magnet main body (8), the bearing fixing ring body (9), the circuit board body (12) and the line card main body (15) are sequentially arranged in an inner space formed by the shell (3) and the end cover body (16) from left to right; An adjusting module group is arranged on one side of the circuit board body (12) which is back to the magnetic encoder chip (11).
  2. 2. The sensor of claim 1, wherein the set of adjustment modules includes a lead-out interface, a CPU module, a power conversion module, a current output module, a communication module, and a magnetic encoder drive module.
  3. 3. The magneto-electric angular displacement sensor according to claim 2, wherein the magnetic encoder chip (11) receives the direction change parallel to the chip surface generated by the rotating magnet carrier (7), communicates with the CPU via the SPI bus, and transmits the encoded angle signal to the CPU module for processing.
  4. 4. The magneto-electric angular displacement sensor according to claim 3, wherein the magnetic encoder chip (11) is MT6835, and the CPU module is a GD32F130F6P6 domestic chip.
  5. 5. The magneto-electric angular displacement sensor according to claim 4, wherein the pin 5 of the magnetic encoder chip (11) is connected to the pin 12 of the CPU module, the pin 6 of the magnetic encoder chip (11) is connected to the pin 13 of the CPU module, the pin 7 of the magnetic encoder chip (11) is connected to the pin 11 of the CPU module, and the pin 8 of the magnetic encoder chip (11) is connected to the pin 10 of the CPU module.
  6. 6. The magneto-electric angular displacement sensor according to claim 4, wherein the communication module is a JMAX3485 chip.
  7. 7. The magnetoelectric angular displacement sensor according to claim 1, wherein the output interface is an adapter body (2), and the adapter body (2) is positioned at one side of the housing (3) and fixedly connected with the housing through an adapter fastening screw (1).
  8. 8. The magnetoelectric angular displacement sensor according to claim 1, wherein the bearing fixing ring body (9), the circuit board body (12) and the line clamp body (15) are respectively provided with a bearing fixing ring fastening screw (10), a circuit board fastening screw (13) and a line clamp fastening screw (14).

Description

Magneto-electric angular displacement sensor Technical Field The invention belongs to the technical field of angular displacement sensors, and particularly relates to a magneto-electric angular displacement sensor. Background Most of the existing angular displacement sensors adopt photoelectric encoders and magnetic encoders. In environments with more dust and dirt, such as industrial application programs, contaminants can be accumulated on wheels of the encoder, so that LED light cannot be transmitted to the optical sensor, the reliability and accuracy of the photoelectric encoder can be greatly affected by a dirty code disc, a square wave can be discontinuous or completely lost, the service life of the LED is limited, the LED can be burnt out finally, the encoder fails, in addition, the glass or plastic encoder is easily damaged by extreme vibration and extreme temperature, the application range of the photoelectric encoder in a severe environment is limited, the photoelectric encoder is complex in structure, the installation process requirement is higher, and the power consumption in normal operation is higher, so that other application programs on mobile and battery-driven equipment are affected, the conversion of a mechanical device is relatively dependent, and errors caused by mechanical gaps are needed to be eliminated; Meanwhile, other types of magnetic encoders have the defects of fixed precision, lower supporting rotating speed, low precision, single use scene, single output interface, no self-calibration function, no customized logic function, no integration of more circuit designs and the like, and are similar to the scene of feeding back some discrete quantities through angle information. Therefore, there is a need to propose a magneto-electric angular displacement sensor, so as to effectively improve the above problems. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a magneto-electric angular displacement sensor, which has the characteristic of being capable of realizing intelligent high-precision angle measurement. The magneto-electric angular displacement sensor comprises an output interface, a shell, a first rotary bearing, a transmission shaft, a second rotary bearing, a magnet carrier, a magnet main body, a bearing fixing ring body, a magnetic encoder chip, a circuit board body, a line card main body and an end cover main body, wherein the magnetic encoder chip is arranged at the middle position of one side surface of the circuit board body, the shell and the end cover main body are fixedly connected through an end cover fastening screw, the first rotary bearing, the transmission shaft, the second rotary bearing, the magnet carrier, the magnet main body, the bearing fixing ring body, the circuit board body and the line card main body are sequentially arranged in an inner space formed by the shell and the end cover main body from left to right, and an adjusting module group is arranged on one side, back to the magnetic encoder chip, of the circuit board main body. As a preferable technical scheme of the magnetoelectric angular displacement sensor, the adjusting module group comprises an outgoing line interface, a CPU module, a power conversion module, a current output module, a communication module and a magnetic encoder driving module. As a preferable technical scheme of the magnetoelectric angular displacement sensor, the magnetic encoder chip is communicated with the CPU through the SPI bus by receiving the direction change parallel to the surface of the chip generated by the rotating magnet carrier, and the encoded angle signal is transmitted to the CPU module for processing. As a preferable technical scheme of the magnetoelectric angular displacement sensor, the magnetic encoder chip is MT6835, and the CPU module is a GD32F130F6P6 domestic chip. As a preferable technical scheme of the magnetoelectric angular displacement sensor, a pin 5 of the MT6835 chip is connected with a pin 12 of the GD32F130F6P6 chip, a pin 6 of the MT6835 chip is connected with a pin 13 of the GD32F130F6P6 chip, a pin 7 of the MT6835 chip is connected with a pin 11 of the GD32F130F6P6 chip, and a pin 8 of the MT6835 chip is connected with a pin 10 of the GD32F130F6P6 chip. As a preferable technical scheme of the magnetoelectric angular displacement sensor, the communication module adopts a JMAX3485 chip. As a preferable technical scheme of the magnetoelectric angular displacement sensor, the output interface is an adapter main body, and the adapter main body is positioned on one side of the shell and fixedly connected with the shell through an adapter fastening screw. As the preferred technical scheme of the magnetoelectric angular displacement sensor, the bearing fixing ring body, the circuit board body and the line clamp body are respectively provided with a bearing fixing ring fastening screw, a circuit board fastening screw and a line clamp fastening screw. C