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CN-116072370-B - Self-contained magnetic field generating device with adjustable output parameters and method thereof

CN116072370BCN 116072370 BCN116072370 BCN 116072370BCN-116072370-B

Abstract

The invention discloses a magnetic field generating device with adjustable self-contained output parameters and a method thereof. The magnetic field generating device consists of a main control unit, a battery unit, a shielding structure unit and a Homhz unit. The main control unit and the battery unit are wrapped in the shielding structure unit, so that the interference of the main control unit and the battery unit on the stable magnetic field generated by the magnetic field generating device can be effectively restrained, and the parameter output precision of the magnetic field generating device is improved. On the premise of meeting the preset value output function, the external calibration controller instruction can be received through the RS-232 interface reserved by the MCU control unit, and the magnetic field output modes, such as stable constant output, sine output, square wave output, triangular wave output and the like, which are suitable for different application scenes are completed. According to the invention, through structural design, the rechargeable battery provides a working power supply, and all functional units are uniformly integrated with the connecting cable, so that the device is suitable for being used in outdoor operation scenes without large quantity of transportation and assembly and external matched equipment.

Inventors

  • ZHANG LONGWEI
  • QI LIUMING
  • YANG YONGSHOU
  • XU HAOHUI
  • YAN JINGJIA
  • WANG ZHONGKANG

Assignees

  • 杭州瑞利海洋装备有限公司

Dates

Publication Date
20260505
Application Date
20230117

Claims (10)

  1. 1. The magnetic field generating device with the adjustable self-contained output parameters is characterized by comprising a main control unit (10), a battery unit (20), a shielding structure unit (70) and a Homhz unit (90); The Homez unit (90) comprises two groups of framework structures (91) and coil structures (92), wherein in each group of framework structures (91) and coil structures (92), the framework structures (91) are used as support carriers of the coil structures (92), wire grooves for circumferentially winding the coil structures (91) are formed in the framework structures (91), the coil structures (91) are continuously wound on the framework structures (91) through the wire grooves, the two groups of framework structures (91) and the coil structures (92) are coaxially arranged in a parallel and spaced mode to form a Homez coil structure, the two framework structures (91) are connected into a whole through a plurality of tubular shielding structure units (70), and all the shielding structure units (70) are uniformly distributed along the circumferential equiangular directions; The main control unit (10) and the battery unit (20) are both packaged in an inner cavity of the shielding structure unit (70), and the shielding structure unit (70) shields interference magnetic signals generated by the battery unit (20) and the main control unit (10); The battery unit (20) is used for providing an operating power supply for the main control unit (10); The main control unit (10) comprises a power supply unit (30), an MCU control unit (40), a reference voltage unit (50), a D/A unit (60) and a driving unit (80), wherein the input end of the power supply unit (30) is connected with the battery unit (20), the output end of the power supply unit is respectively connected with the MCU control unit (40), the reference voltage unit (50), the D/A unit (60) and the driving unit (80) and is used for providing adaptive working voltages for the MCU control unit (40), the reference voltage unit (50), the D/A unit (60) and the driving unit (80), the MCU control unit (40) is provided with a communication interface connected with an external calibration controller, the digital signal input end, the reference voltage input end and the analog signal output end of the D/A unit (60) are respectively connected with the MCU control unit (40), the reference voltage unit (50) and the driving unit (80), and the driving unit (80) is connected with two coil structures (92) in the Homhz unit (90) and is used for converting analog signals output by the D/A unit (60) into driving signals and driving the two coil structures (91) to generate stable magnetic field environments.
  2. 2. The magnetic field generating device with adjustable self-contained output parameters according to claim 1, wherein the battery unit (20) adopts a rechargeable lithium ion battery pack and is fixed inside the shielding structural unit (70) through a battery clamping seat.
  3. 3.A self-contained output parameter adjustable magnetic field generating device according to claim 2, characterized in that the design output voltage of the battery cell (20) is 7.4VDC.
  4. 4. The magnetic field generating device with adjustable self-contained output parameters according to claim 1, wherein the power supply unit (30) is connected with a battery unit (30) as a working power supply, an external direct-current stabilized power supply signal interface is reserved, and the interface adopts a 5-24 VCD wide voltage interface.
  5. 5. A self-contained output parameter adjustable magnetic field generating device according to claim 1, wherein the shielding structure unit (70) is made of soft magnetic material.
  6. 6. The magnetic field generator with adjustable self-contained output parameters according to claim 5, wherein the soft magnetic material is permalloy material.
  7. 7. A self-contained output parameter adjustable magnetic field generating device according to claim 1, characterized in that the output voltage of the power supply unit (30) is 3.3V DC voltage.
  8. 8. The magnetic field generating device with adjustable self-contained output parameters according to claim 7, wherein the input voltage of the reference voltage unit (50) is 3.3V DC voltage, and the reference voltage output to the D/a unit (60) is 2.5V DC voltage.
  9. 9. The magnetic field generating device with adjustable self-contained output parameters according to claim 1, wherein the number of shielding structural units (70) is 3, and the shielding structural units are uniformly distributed along the circumferential direction at a central angle of 120 degrees with respect to each other.
  10. 10. A control method of a magnetic field generating device with adjustable self-contained output parameters according to any one of claims 1-9, characterized in that after an MCU control unit (40) in the magnetic field generating device is started and initialized, serial port interrupt signals are monitored to obtain messages sent by an external calibration controller, and three working modes of outputting preset values, setting output parameters and reading set parameters are executed according to different monitoring results; a) If the serial port interrupt signal is not monitored, entering an output preset value working mode, wherein the mode is a portable working mode in which the self-contained magnetic field generating device with adjustable output parameters does not need to work independently under external control, and the MCU control unit (40) sends the initialized output parameters to the D/A unit (60) in a digital signal mode so as to enable the interior of the Homhz unit (90) to generate a 50000nT steady magnetic field environment; b) If a serial port interrupt signal is monitored and a control instruction analyzed from a message conforming to a message specification is an instruction for setting output parameters, a working mode for setting the output parameters is entered, a magnetic field generating device with adjustable self-contained output parameters in the mode can control the environment of an output magnetic field to change in real time, the mode has magnetic field output instruction forms of stable and constant output, sine output, square wave output and triangular wave output, and the control logic of each magnetic field output instruction form is as follows: under the form of a steady output instruction, the MCU control unit (40) loads a second set value in the message, converts the second set value into a corresponding digital signal to be output, controls the Homez unit (90) to generate a steady magnetic field to be output, and stores the second set value in a register; Under the sine output instruction form, the MCU control unit (40) loads the periodic parameter, the first set value and the second set value in the message, converts the periodic parameter, the first set value and the second set value into corresponding digital signals to be output, controls the Homhz unit (90) to generate periodic sine signals corresponding to the periodic parameter with the upper limit of the magnetic field being the first set value and the lower limit being the second set value, and stores the periodic parameter, the first set value and the second set value in the register; Under the square wave output instruction form, the MCU control unit (40) loads the periodic parameter, the first set value and the second set value in the message, converts the periodic parameter, the first set value and the second set value into corresponding digital signals to be output, controls the Homhz unit (90) to generate periodic square wave signals corresponding to the periodic parameter with the upper limit of the magnetic field being the first set value and the lower limit being the second set value, and stores the periodic parameter, the first set value and the second set value in the register; Under the form of a triangular wave output instruction, the MCU control unit (40) loads the periodic parameter, the first set value and the second set value in the message, converts the periodic parameter, the first set value and the second set value into corresponding digital signals to be output, controls the Homhz unit (90) to generate periodic triangular wave signals corresponding to the periodic parameter with the upper limit of the magnetic field being the first set value and the lower limit being the second set value, and stores the periodic parameter, the first set value and the second set value in a register; c) If the serial port interrupt signal is monitored and the control instruction analyzed from the message conforming to the message specification is a reading setting parameter instruction, a working mode of reading the setting parameter is entered, and the self-contained output parameter adjustable magnetic field generating device in the mode packs the current output information according to the message specification and outputs the current output information to an external calibration controller through an RS-232 communication protocol.

Description

Self-contained magnetic field generating device with adjustable output parameters and method thereof Technical Field The invention relates to the field of space magnetic field generating devices, in particular to a magnetic field generating device with adjustable self-contained output parameters and a method thereof. Background The known controllable stable magnetic field environment is generated in the specific space region, and the method is widely applied to the use state and performance parameter calibration scene of the geophysical magnetic field information measuring device. The magnetic field output is carried out by adopting the programmable control of the output magnetic field information, and the method has very important significance for calibrating the use state and the performance parameters of the magnetic field information measuring device. In the related art, a stable magnetic field environment is usually generated in a specific space region by using a split module such as a Homhz coil, a transmission cable, a signal generator, a power supply and the like, and the physical quantity parameters of the space magnetic field are changed by manually controlling the output parameters of the signal generator. Because of the common equipment with separate functional modules, it is common to design the functional modules as fixed equipment or laboratory equipment, and the geophysical magnetic field information measurement operations area is typically located in a remote area or in a marine environment remote from land. The magnetic field generating device is used in specific sites and partial operation environments with certain limitation, the complexity of equipment transportation, debugging and control is increased when the magnetic field generating device is used in outdoor operation scenes, and the interface requirement and the matching requirement for equipment connection are complex. Disclosure of Invention The invention aims to overcome the defects that a magnetic field generating device in the prior art is too complex in operation scenes such as outdoors and the like and complex in equipment transportation, debugging and control, and provides a magnetic field generating device with adjustable self-contained output parameters. The technical scheme adopted for solving the technical problems is as follows: The magnetic field generating device with adjustable self-contained output parameters comprises a main control unit, a battery unit, a shielding structure unit and a Homhz unit; The Homholtz unit comprises two groups of framework structures and coil structures, wherein in each group of framework structures and coil structures, the framework structures are used as support carriers of the coil structures, wire grooves for circumferentially winding the coil structures are formed in the framework structures, and the coil structures are continuously wound on the framework structures through the wire grooves; the main control unit and the battery unit are both packaged in the inner cavity of the shielding structure unit, and the shielding structure unit shields interference magnetic signals generated by the battery unit and the main control unit; The battery unit is used for providing working power supply for the main control unit; The main control unit comprises a power supply unit, an MCU control unit, a reference voltage unit, a D/A unit and a driving unit, wherein the input end of the power supply unit is connected with the battery unit, the output end of the power supply unit is respectively connected with the MCU control unit, the reference voltage unit, the D/A unit and the driving unit and is used for providing adaptive working voltages for the MCU control unit, the reference voltage unit, the D/A unit and the driving unit, the MCU control unit is provided with a communication interface connected with an external calibration controller, the digital signal input end, the reference voltage input end and the analog signal output end of the D/A unit are respectively connected with the MCU control unit, the reference voltage unit and the driving unit, and the driving unit is connected with two coil structures in the Homhz unit and is used for converting analog signals output by the D/A unit into driving signals and driving the two coil structures to generate a stable magnetic field environment. Preferably, the battery unit adopts a rechargeable lithium ion battery pack, and is fixed inside the shielding structure unit through a battery clamping seat. Preferably, the design output voltage of the battery cell is 7.4VDC. Preferably, the power supply unit is connected with the battery unit as a working power supply, and an external direct current stabilized power supply signal interface is reserved. Preferably, the interface adopts a 5-24 VCD wide voltage interface. Preferably, the shielding structure unit is made of soft magnetic material. Preferably, the soft magnetic material is permalloy material.