CN107907914A - A kind of measuring circuit of very geographical three-component magnetometer - Google Patents
A kind of measuring circuit of very geographical three-component magnetometer Download PDFInfo
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- CN107907914A CN107907914A CN201711434898.3A CN201711434898A CN107907914A CN 107907914 A CN107907914 A CN 107907914A CN 201711434898 A CN201711434898 A CN 201711434898A CN 107907914 A CN107907914 A CN 107907914A
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- 238000005259 measurement Methods 0.000 claims abstract description 51
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- 238000005516 engineering process Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/40—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for measuring magnetic field characteristics of the earth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The present invention relates to a kind of measuring circuit of very geographical three-component magnetometer.The present invention includes power circuit, collecting sensor signal circuit, governor circuit, serial ports attitude measurement circuit, RTC clock circuit, data transmission circuit, SD card storage circuit, file management circuit, external interface circuit.Wherein collecting sensor signal circuit includes three D/A converting circuit, X-axis, Y-axis, Z axis analog signal add circuits.The present invention uses the fluxgate sensor of Bartington companies of Britain, combine the characteristics such as the high sensitivity, high-resolution, low-power consumption of fluxgate sensor, by adding serial ports attitude measurement module, the design based on measuring circuit, realizes the three-component measurement in earth's magnetic field under true geographical environment.
Description
Technical field
The invention belongs to magnetic field measurement technology field, and in particular to a kind of measuring circuit of very geographical three-component magnetometer.
Background technology
Magnetic field environment is measured in ship deperming, controller unit, space flight and aviation, geological prospecting, industrial automation, lossless inspection
The various fields such as survey, magnetic navigation have a wide range of applications.In order to meet to explore, the business such as prospect the needs of, promote geology and
The development of seafari cause, people propose magnetic method detection the requirement of higher.Fluxgate three-component instrument is exactly to utilize three points
Measure the instrument that fluxgate sensor realizes measurement.In conventional magnetometer, it is three-component to pertain only to magnetic field under instrument coordinates system
Measurement, and in practice, generally require reference is the magnetic-field component under true geographical environment, therefore, is surveyed in magnetometer
When measuring earth's magnetic field, it is related to the problem of measuring coordinate axis is changed.Furthermore magnetic field is a continually changing amount, in practical study
With in detection, it is to be understood that the variation tendency in magnetic field, needed in measurement process to observed quantity carry out real-time storage with backup.Cause
This, develops a kind of precision height, and real-time storage is good, and for the three-component fluxgate three-component in magnetic field under true geographical environment
Instrument, will play an important role in the fields such as geological prospecting.
The content of the invention
It is an object of the invention to provide a kind of measuring circuit of very geographical three-component magnetometer.
When the present invention includes power circuit, collecting sensor signal circuit, governor circuit, serial ports attitude measurement circuit, RTC
Clock circuit, data transmission circuit, SD card storage circuit, file management circuit, external interface circuit.Collecting sensor signal circuit
Signal output part be connected with the signal input part one way signal of external interface circuit, the signal end of collecting sensor signal circuit
It is connected with the first signal end two-way signaling of governor circuit；The signal output part of external interface circuit and the letter of file management circuit
The connection of number input terminal one way signal, the signal input part of external interface circuit and the first signal output part of governor circuit are unidirectionally believed
The signal end two-way signaling of number connection, the signal end of external interface circuit and data transmission circuit connects；The second of governor circuit
Signal output part is connected with the signal input part one way signal of SD card storage circuit, when the signal input part and RTC of governor circuit
Clock circuit signal output terminal one way signal connects, and the secondary signal end of governor circuit is double with the signal end of serial ports attitude measurement circuit
Connected to signal.
The power circuit includes+15V regulator circuits, -15V regulator circuits ,+5V regulator circuits ,+4.5V reference voltages
Circuit ,+3.3V regulator circuits ,+3.3V switching power circuits ,+2.5V reference voltage circuits；+ 15V regulator circuits, -15V voltage stabilizings
Circuit gives fluxgate sensor power supply, and+5V regulator circuits provide stability high voltage for data transmission circuit, and with linear electricity
Rood is to the less+4.5V of ripple and+2.5V, wherein+4.5V reference voltage circuits are used to be in collecting sensor signal circuit
Three Axle moulds intend signal adder circuit and provide high-precision reference voltage, and+2.5V reference voltage circuits are used to adopt for sensor signal
D/A converting circuit provides stable reference voltage in collector；+ 3.3V regulator circuits and+3.3V on-off circuits are then used for master
Control circuit, serial ports attitude measurement circuit, RTC clock circuit, SD card storage circuit, file management circuit with stable voltage；
+ 15V the regulator circuits, -15V regulator circuits include switching power source chip U1, capacitance C1-C3；Capacitance C1's
One end, 2 feet of switching power source chip U1 are grounded after connecting, and the 1 foot connection of the other end, switching power source chip U1 of capacitance C1 is followed by
+ 24V power supplys；3 feet of a termination switching power source chip U1 of capacitance C2, as+15V power output ends；The other end of capacitance C2,
It is grounded after one end of capacitance C3, the 4 feet connection of switching power source chip U1；The 5 of another termination switching power source chip U1 of capacitance C3
Foot, as -15V power output ends；Switching power source chip U1 uses the DC-DC switching power source chips of Texas Instrument；
+ 5V the regulator circuits include switching power source chip U2, polar capacitor Cp1-Cp4, resistance R1-R4, inductance L1,
Capacitance C4-C6, light emitting diode D1；7 feet of switching power source chip U2, one end of resistance R1, the cathode of polar capacitor Cp1, pole
Cathode, the cathode of polar capacitor Cp3 of property capacitance Cp2 connects+24V power supplys；The anode of polar capacitor Cp1, polar capacitor Cp2 it is negative
Pole, the anode of polar capacitor Cp3 are grounded respectively；The one of the other end of resistance R1, the 5 foot connecting resistance R2 of switching power source chip U2
End；It is grounded after the 6 feet connection of the other end, switching power source chip U2 of resistance R2；A termination switching power source chip U2 of capacitance C4
1 foot, the other end of capacitance C4, one end of inductance L1, the cathode of diode D1 connect 8 feet of switching power source chip U2；Diode
The plus earth of D1；The other end of inductance L1, one end of resistance R3, the cathode of polar capacitor Cp4, one end of capacitance C5, capacitance
One end connection of C6, as+5V power output ends；The 4 of the other end of resistance R3, a termination switching power source chip U2 of resistance R4
Foot；It is grounded after the other end connection of the anode, resistance R4 of polar capacitor Cp4, the other end of capacitance C5, the other end of capacitance C6 point
It is not grounded；The remaining pin of switching power source chip U2 is hanging；Switching power source chip U2 uses the switching power source chip of Texas Instrument
TPS5420；
+ 4.5V the reference voltage circuits include reference voltage chip U6, operational amplifier chip U7, inductance L2, pole
Property capacitance Cp8, capacitance C19-C24, resistance R20-R21；One end of inductance L2, the cathode of polar capacitor Cp8, the one of capacitance C19
Terminate 2 feet of reference voltage chip U7；+ 5V the output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L2；Polar capacitor
The anode of Cp8, the other end of capacitance C19,4 feet of reference voltage chip U6 are grounded after connecting；A termination benchmark electricity of resistance R20
6 feet of pressure chip U6, the other end of resistance R20,3 feet of a termination operational amplifier chip U7 of capacitance C21, capacitance C21's
The other end is grounded；5 feet of a termination reference voltage chip U6 of capacitance C20, the other end ground connection of capacitance C20；Operational amplifier
The 4 feet ground connection of chip U7；+ the 5V that one end of capacitance C22, the 7 feet connection of operational amplifier chip U7 are followed by+5V regulator circuits is steady
Press output terminal, the other end ground connection of capacitance C22；6 feet of a termination operational amplifier chip U7 of resistance R21, resistance R21's is another
One end, one end connection of one end of capacitance C23, capacitance C24, as+4.5V reference voltage output ends, the other end of capacitance C23,
The other end of capacitance C24 is grounded respectively；Reference voltage chip U6, the remaining pin of operational amplifier chip U7 are hanging；Benchmark electricity
Chip U6 is pressed to use the reference voltage chip REF5045 of Texas Instrument；Operational amplifier chip U7 uses the precision of Texas Instrument
Amplifier chip OPA376；
+ 3.3V the regulator circuits include regulated power supply chip U10, polar capacitor Cp10, capacitance C34-C36；Polarity
The 3 feet connection of the cathode of capacitance Cp10, one end of capacitance C34, regulated power supply chip U10 is followed by power vd D, polar capacitor Cp10
Anode, the other end of capacitance C34 is grounded respectively；The 1 foot ground connection of regulated power supply chip U10；One end of capacitance C35, capacitance C36
A termination regulated power supply chip U10 2 feet, as+3.3V the voltage output ends of+3.3V regulator circuits, capacitance C35's is another
End, the other end of capacitance C36 are grounded respectively；Regulated power supply chip U10 uses regulated power supply chip LM1117；
+ 3.3V the switching power circuits include switching power source chip U11, capacitance C37-C40, resistance R23, luminous two
Pole pipe D3；One end of capacitance C38, one end of capacitance C37,3 feet of switching power source chip U11, the connection of 4 feet are followed by+5V voltage stabilizings electricity
+ 5V the output end of pressure-stabilizing on road, is grounded, capacitance C38's is another after the 2 feet connection of the other end, switching power source chip U11 of capacitance C37
One end, 1 foot of switching power source chip U11 are grounded after connecting；One end of capacitance C39, one end of capacitance C40, the one of resistance R23
End, the connection of 5 feet of switching power source chip U11,6 feet are followed by the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, and capacitance C39's is another
One end, the other end of capacitance C40 are grounded respectively, the anode of the other end sending and receiving optical diode D3 of resistance R23, light emitting diode D3
Minus earth；The remaining pin of switching power source chip U11 is hanging；Switching power source chip U11 is opened using Texas Instrument
Powered-down source chip TPS7350；
+ 2.5V the reference voltage circuits include reference voltage chip U15, operational amplifier chip U16, inductance L3,
Polar capacitor Cp13, capacitance C56-C61, resistance R33-R34；One end of inductance L3, the cathode of polar capacitor Cp13, capacitance C56
A termination reference voltage chip U15 2 feet ,+5V the output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L3, polarity
The anode of capacitance Cp13, the other end of capacitance C56,4 feet of reference voltage chip U15 are grounded after connecting；A termination of resistance R33
6 feet of reference voltage chip U15, the other end of resistance R33,3 feet of a termination operational amplifier chip U16 of capacitance C58, electricity
Hold the other end ground connection of C58；5 feet of a termination reference voltage chip U15 of capacitance C57, the other end ground connection of capacitance C57；Fortune
Calculate the 4 feet ground connection of amplifier chip U16；One end of capacitance C59, the 7 feet connection of operational amplifier chip U16 are followed by+5V voltage stabilizings
+ 5V the output end of pressure-stabilizing of circuit, the other end ground connection of capacitance C59；The 6 of one termination operational amplifier chip U16 of resistance R34
Foot, one end connection of the other end of resistance R34, one end of capacitance C60, capacitance C61, as+2.5V reference voltage output ends, electricity
The other end, the other end of capacitance C61 for holding C60 are grounded respectively；Reference voltage chip U15, operational amplifier chip U16 other
Pin is hanging；Reference voltage chip U15 uses the reference voltage chip REF5045 of Texas Instrument；Operational amplifier chip U16 is adopted
With the accurate amplifier chip OPA376 of Texas Instrument.
The collecting sensor signal circuit includes X-axis, Y-axis, three analog signal add circuits of Z axis and digital-to-analogue conversion
Circuit；The similar axial simulation signal adder circuit of three structures, for sensor output signal Voltage value to be converted into modulus
The acceptable magnitude of voltage of conversion circuit；
The X-axis analog signal add circuit includes operational amplifier chip U3, resistance R5-R9, capacitance C7-C10, pole
Property capacitance Cp5；One end of resistance R5, one end of resistance R6, resistance R7 a termination operational amplifier chip U3 3 feet, resistance
+ 4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of R5, the one of another termination capacitor C7 of resistance R6
End, as X-axis magnetic field signal input terminal, the other end of another terminating resistor R7 of capacitance C7 and ground connection；Operational amplifier chip
The 4 feet ground connection of U3；1 foot of operational amplifier chip U3 and the connection of 2 feet are followed by power supply V_Back；One end of capacitance C8, polarity electricity
Cathode, 8 feet of operational amplifier chip U3 for holding Cp5 connect the+5V output end of pressure-stabilizing of+5V regulator circuits, the other end of capacitance C8
Connect the anode of polar capacitor Cp5 and ground connection；6 feet of operational amplifier chip U3,7 feet, one end of capacitance C10 are connected to X-axis
The output terminal of analog signal add circuit, connects 6 feet with insert row P2；One end of capacitance C9, a termination computing of resistance R8 are put
5 feet of big device chip U3, the other end ground connection of capacitance C9, the other end of resistance R8, a termination capacitor C10 of resistance R9 it is another
End, another termination power V_Back of resistance R9；Operational amplifier chip U3 uses the accurate amplifier chip of Texas Instrument
OPA2376；
The Y-axis analog signal add circuit includes operational amplifier chip U4, resistance R10-R14, capacitance C11-
C14, polar capacitor Cp6；One end of resistance R10, one end of resistance R11, the one of resistance R12 terminate operational amplifier chip U4's
3 the feet ,+4.5V reference voltage output ends of another termination+4.5V reference voltage circuits of resistance R10, another termination of resistance R11
One end of capacitance C11, as the input terminal of Y weeks magnetic field signal, the other end of another terminating resistor R12 of capacitance C11 and ground connection；
The 4 feet ground connection of operational amplifier chip U4；1 foot of operational amplifier chip U4 and the connection of 2 feet are followed by power supply V_Back；Capacitance
One end of C12, the cathode of polar capacitor the Cp6 ,+5V output end of pressure-stabilizing of+5V regulator circuits connect the 8 of operational amplifier chip U4
Foot, the anode of another termination polar capacitor Cp6 of capacitance C12 and ground connection；6 feet, 7 feet, the capacitance C14 of operational amplifier chip U4
One end connection, as the output terminal of Y-axis analog signal add circuit, connect 4 feet with insert row P2；One end of capacitance C13, electricity
Hinder 5 feet of a termination operational amplifier chip U4 of R13, the other end ground connection of capacitance C13, the other end, the resistance of resistance R13
The other end of a termination capacitor C14 of R14, another termination power V_Back of resistance R14；Operational amplifier chip U4 uses moral
The accurate amplifier chip OPA2376 of state instrument；
The Z axis analog signal add circuit includes operational amplifier chip U5, resistance R15-R19, capacitance C15-
C18, polar capacitor Cp7；One end of resistance R15, one end of resistance R16, the one of resistance R17 terminate operational amplifier chip U5's
3 feet；+ 4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of resistance R15；Another termination of resistance R16
One end of capacitance C15, the input terminal as Z axis magnetic field signal；The other end of another terminating resistor R17 of capacitance C15 and ground connection；
The 4 feet ground connection of operational amplifier chip U5；1 foot of operational amplifier chip U5 and the connection of 2 feet are followed by power supply V_Back；Capacitance
One end of C16, the cathode of polar capacitor the Cp7 ,+5V output end of pressure-stabilizing of+5V regulator circuits connect the 8 of operational amplifier chip U5
Foot, the anode of another termination polar capacitor Cp7 of capacitance C16 and ground connection；6 feet, 7 feet, the capacitance C18 of operational amplifier chip U5
One end connection, as the output terminal of Z axis analog signal add circuit, connect 2 feet with insert row P2；One end of capacitance C17, electricity
Hinder 5 feet of a termination operational amplifier chip U5 of R18, the other end ground connection of capacitance C17, the other end, the resistance of resistance R18
The other end of a termination capacitor C18 of R19, another termination power V_Back of resistance R19；Operational amplifier chip U5 uses moral
The accurate amplifier chip OPA2376 of state instrument；
The D/A converting circuit include modulus conversion chip U14, polar capacitor Cp11-Cp12, resistance R29-R32,
Capacitance C48-C55, crystal oscillator X3；One end of capacitance C48, the cathode of polar capacitor Cp11,1 foot of modulus conversion chip U14 meet+5V
+ 5V the output end of pressure-stabilizing of regulator circuit；The other end, the anode of polar capacitor Cp11 of capacitance C48 connects and is grounded；Analog-to-digital conversion
4 feet of chip U14 connect the+2.5V reference voltage output ends of+2.5V reference voltage circuits；3 feet of modulus conversion chip U14,6
Foot, 7 feet, 9 feet, 11 feet, 13 feet, 5 feet, 2 feet ground connection；Conduct after one end of capacitance C49, the 8 feet connection of modulus conversion chip U14
The input terminal VXToADC of D/A converting circuit, connects 6 feet with insert row P2, the other end ground connection of capacitance C49；The one of capacitance C50
Hold, the input terminal VYToADC after the connection of 10 feet of modulus conversion chip U14 as D/A converting circuit, connect 4 with insert row P2
Foot, the other end ground connection of capacitance C50；Digital-to-analogue conversion is used as after one end of capacitance C51, the 12 feet connection of modulus conversion chip U14
The input terminal VZToADC of circuit, connects 2 feet with insert row P2, the other end ground connection of capacitance C51；The 14 of modulus conversion chip U14
Foot connects the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；24 feet of a termination modulus conversion chip U14 of resistance R29, resistance
52 feet of another termination governor circuit of R29；23 feet of a termination modulus conversion chip U14 of resistance R30, resistance R30's is another
54 feet of one termination governor circuit；22 feet of a termination modulus conversion chip U14 of resistance R31, another termination master of resistance R31
Control 53 feet of circuit；21 feet of a termination modulus conversion chip U14 of resistance R32, another termination governor circuit of resistance R32
56 feet；The 20 feet ground connection of modulus conversion chip U14；One end of crystal oscillator X3, the one of capacitance C54 terminate modulus conversion chip U14's
19 feet；18 feet of the other end of crystal oscillator X3, a termination modulus conversion chip U14 of capacitance C55；The other end and electricity of capacitance C54
It is grounded after holding the other end connection of C55；The 17 feet ground connection of modulus conversion chip U14；One end of capacitance C52, polar capacitor Cp12
Cathode, 15 feet, 16 feet of modulus conversion chip U14 connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；Capacitance C52's is another
One end is grounded after being connected with the anode of polar capacitor C12；Other pins of modulus conversion chip U14 are hanging；Modulus conversion chip U14
Using 24 modulus conversion chip ADS1256 of Texas Instrument.
The governor circuit includes main control chip U12, resistance R24-R25, capacitance C41-C44, crystal oscillator X2；Capacitance C41
One end and crystal oscillator X2 a termination main control chip U12 12 feet, one end of capacitance C42 and another termination master control core of crystal oscillator X2
13 feet of piece U12, the other end of capacitance C41 and the other end ground connection of capacitance C42,94 feet of main control chip U12 pass through resistance R24
Ground connection；One end of resistance R25,14 feet of a termination main control chip U12 of capacitance C43, another termination+3.3V of resistance R25 are steady
+ 3.3V the output end of pressure-stabilizing of volt circuit, the other end ground connection of capacitance C43；6 feet of a termination main control chip U12 of capacitance C44,
The other end of capacitance C44,50 feet of main control chip U12,75 feet, 100 feet, 28 feet, 11 feet, 22 feet connect+3.3V regulator circuits+
3.3V output end of pressure-stabilizing；20 feet of main control chip U12,49 feet, 74 feet, 99 feet, 10 feet, 19 feet ground connection；The 52 of main control chip U12
One end of resistance R29,53 feet connect one end of resistance R31 in analog to digital conversion circuit in foot connection analog to digital conversion circuit, and 54 feet connect
One end of capacitance R30 in analog to digital conversion circuit is connect, 83 feet connect 12 feet with insert row P2, and 56 feet connect resistance in analog to digital conversion circuit
One end of R32,30 feet connect 5 feet of SD card storage circuit, and 31 feet connect 7 feet of SD card storage circuit, and 32 feet connect SD card storage circuit
3 feet, 68 feet are connected connects 10 feet with insert row P2 with 8 feet of insert row P2,69 feet, and 72 feet connect 2 feet of connector SWD, 76 feet
3 feet of connector SWD are connect, 78 feet connect 2 feet of serial ports attitude measurement circuit, and 79 feet connect 3 feet of serial ports attitude measurement circuit, 80 feet
14 feet with insert row P2 are connected, 1 foot connects 3 feet of RTC clock circuit, and 2 feet connect 15 feet of RTC clock circuit, and 4 feet connect RTC clock
16 feet of circuit, 21 feet connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；The remaining pin of main control chip U12 is hanging；It is main
Control the STM32F103RCT6 chips that chip U12 uses STMicw Electronics.
The serial ports attitude measurement circuit includes serial ports attitude measurement chip U17, capacitance C62, polar capacitor Cp14；String
7 feet, 8 feet, 4 feet of mouth attitude measurement chip U17 are grounded respectively；One end of capacitance C62, the cathode of polar capacitor Cp14, serial ports
1 foot of attitude measurement chip U17 connects the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end, the polar capacitor of capacitance C62
The anode of Cp14 is grounded respectively；2 feet of serial ports attitude measurement chip U17 connect 78 feet of governor circuit；Serial ports attitude measurement chip
3 feet of U17 connect 79 feet of governor circuit；4,7, the 8 feet ground connection of serial ports attitude measurement chip U17；Serial ports attitude measurement chip U17
Other pins it is hanging；Serial ports attitude measurement chip U17 uses the micro- scientific and technological LEADIY-M3 chips of soft core；The serial ports appearance
State measuring circuit is by measuring the real-time attitude angle of magnetometer, and magnetic field three is divided under the carrier coordinate system that magnetometer measurement is obtained
Amount, the magnetic field three-component being converted under true geographical environment.
The RTC clock circuit includes clock chip U13, resistance R26-R28, capacitance C45-C46, button cell B1；
The 2 feet connection of one end of capacitance C45, one end of resistance R26, clock chip U13 is followed by the+3.3V voltage stabilizings of+3.3V regulator circuits
Output terminal, the other end ground connection of capacitance C45, the 3 feet connection of the other end, clock chip U13 of resistance R26 are followed by governor circuit
1 foot；5 feet of clock chip U13,6 feet, 7 feet, 8 feet, 9 feet, 10 feet, 11 feet, 12 feet, 13 feet ground connection；One end of resistance R27, when
The 15 feet connection of clock chip U13 is followed by 2 feet of governor circuit, and one end of resistance R28, the 16 feet connection of clock chip U13 are followed by
4 feet of governor circuit, the other end connection of the other end, resistance R28 of resistance R27 are followed by the+3.3V voltage stabilizings of+3.3V regulator circuits
Output terminal；One end of capacitance C46, the cathode of button cell B1 connect 14 feet of clock chip U13, and the other end of capacitance C46 is grounded,
The anode ground connection of button cell B1；The remaining pin of clock chip U13 is hanging；Clock chip U13 is using kind profit semiconductor
DS3231SN chips；The RTC clock circuit is used for the calibration measurement time, keeps time of measuring synchronous with the standard time.
The data transmission circuit includes multichannel RS-232 line drivers/receiver U8, capacitance C25-C29, pole
Property capacitance Cp9；1 foot, 3 feet of multichannel RS-232 line drivers/receiver U8 connect the both ends of capacitance C25,4 feet, 5 respectively
Foot connects the both ends of capacitance C26 respectively, and 15 feet are directly grounded, and 10 feet connect 8 feet with insert row P2 as signal output, and 9 feet are made
10 feet of connection insert row P2 are inputted for signal, 6 feet are grounded by capacitance C29, and 2 feet are grounded by capacitance C28, capacitance C27's
One end, the cathode of polar capacitor Cp9 and the connection of 16 feet are followed by the+5V output end of pressure-stabilizing of+5V regulator circuits, and capacitance C27's is another
End, the anode of polar capacitor Cp9 are grounded after connecting, and 7 feet connect 4 feet of junction block P1, and 8 feet connect 3 feet of junction block P1, multichannel
RS-232 line drivers/other pins of receiver U8 are hanging；Multichannel RS-232 line drivers/receiver U8 uses Dezhou
The MAX3232 chips of instrument.
The SD card storage circuit includes SDCard-U18, capacitance C63, resistance R35-R36；One end of capacitance C63,
The 4 feet connection of SDCard-U18 is followed by the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end, the SDCard- of capacitance C63
It is grounded after the 6 feet connection of U18；One end of resistance R35, the 3 feet connection of SDCard-U18 are followed by 32 feet of governor circuit, resistance
+ 3.3V the output end of pressure-stabilizing of the other end of R35, a termination+3.3V regulator circuits of resistance R36, the other end of resistance R36,
The 7 feet connection of SDCard-U18 is followed by 31 feet of governor circuit；5 feet of SDCard-U18 connect 30 feet of governor circuit, and 2 feet connect
Ground；The remaining pin of SDCard-U18 is hanging.
The file management circuit includes file management control chip U9, capacitance C30-C33, resistance R22, light-emitting diodes
Pipe D2, crystal oscillator X1；2 feet of a termination file management control chip U9 of capacitance C30, another termination+3.3V voltage stabilizings of capacitance C30
+ 3.3V the output end of pressure-stabilizing of circuit；5 feet of file management control chip U9 connect 12 feet with insert row P2,6 foot connection insert rows
14 feet of P2；+ the 3.3V that one end of capacitance C31, the 9 feet connection of file management control chip U9 are followed by+3.3V regulator circuits is steady
Press output terminal, the other end ground connection of capacitance C31；10 feet of file management control chip U9 connect 7 feet of junction block P1, and 11 feet connect
6 feet of line seat P1；The 12 feet ground connection of file management control chip U9；13 feet, 14 feet of file management control chip U9 connect respectively
The both ends of crystal oscillator X1；One end of capacitance C32, one end of capacitance C33, file management control chip U9 28 feet connection be followed by+
+ 3.3V the output end of pressure-stabilizing of 3.3V regulator circuits；The other end, the other end of capacitance C33 of capacitance C32 is grounded respectively；Luminous two
The cathode of pole pipe D2 connects 24 feet of file management control chip U9, one end of the anode connecting resistance R22 of light emitting diode D2, resistance
+ 3.3V the output end of pressure-stabilizing of another termination+3.3V regulator circuits of R22；23 feet of file management control chip U9,21 feet, 20
Foot is grounded respectively；19 feet of file management control chip U9 connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；File management
Other pins of control chip U9 are hanging；File management control chip U9 uses CH376S chips；The file management circuit carries
High reading and writing data speed, and enrich file management and read-write capability.
External interface circuit includes junction block circuit, general insert row circuit and connector circuit；
The junction block circuit includes junction block P1, diode D4, polar capacitor Cp15；The anode wiring of diode D4
1 foot of seat P1, the cathode of diode D4 meet power supply DC24V；2 feet of junction block P1,8 feet ground connection, 3 feet connect data transmission circuit
8 feet, 4 feet connect 7 feet of data transmission circuit, and 6 feet connect 11 feet of file management circuit, and 7 feet connect 10 feet of file management circuit；Pole
Property capacitance Cp15 cathode connect 5 feet of junction block P1, the anode ground connection of polar capacitor Cp15；
The general insert row circuit includes general insert row P2；3 feet of general insert row P2,5 feet, 7 feet, 9 feet, 11 feet, 13 feet,
15 feet, 17 feet, 19 feet ground connection, 16 feet, 18 feet, 20 feet connect+5V power supplys, and 2 feet connect 7 feet of Z axis analog signal add circuit, digital-to-analogue
12 feet of conversion circuit, 4 feet connect 10 feet of 7 feet of Y-axis analog signal add circuit, D/A converting circuit, and 6 feet connect X-axis simulation
7 feet of signal adder circuit, 8 feet of D/A converting circuit, 8 feet connect 68 feet of 10 feet of data transmission circuit, governor circuit, and 10
Foot connects 69 feet of 9 feet of data transmission circuit, governor circuit, and 12 feet connect 83 feet of 5 feet of file management circuit, governor circuit,
14 feet connect 80 feet of 6 feet of file management circuit, governor circuit；
The connector circuit includes connector SWD；1 foot of connector SWD connects+3.3V power supplys, and 2 feet connect governor circuit
72 feet, 3 feet connect 76 feet of governor circuit, 4 feet ground connection.
The present invention realizes a kind of measuring circuit of very geographical three-component magnetometer.It make use of the low work(of fluxgate sensor
Consumption, the features such as stability is good, precision is high, small size.In collecting sensor signal circuit, design simulation signal adder circuit,
For sensor output signal Voltage value to be converted into the acceptable magnitude of voltage of analog to digital conversion circuit.In serial ports attitude measurement circuit
In, the complete attitude measurement chip LEADIY-M3 of selection function realizes magnetometer real-time attitude information, for by the carrier of measurement
Magnetic field three-component under coordinate system, the geomagnetic field component under true geographical environment is obtained by coordinate transform.By designing RTC clock
Circuit, more refined, it is synchronous with the standard time to maintain time of measuring time calibration.In file management circuit, selection
Support the file management control chip CH376S of USB interface, enrich file management and read-write capability.
Brief description of the drawings
Fig. 1 is the entire block diagram of circuit of the present invention；
Fig. 2-Fig. 7 is the circuit diagram of power circuit；Wherein Fig. 2 is+15V regulator circuits, the circuit diagram of -15V regulator circuits,
Fig. 3 is the circuit diagram of+5V regulator circuits, and Fig. 4 is the circuit diagram of+4.5V reference voltage circuits, and Fig. 5 is+3.3V regulator circuits
Circuit diagram, Fig. 6 are the circuit diagram of+3.3V switching power circuits, and Fig. 7 is the circuit diagram of+2.5V reference voltage circuits；
Fig. 8-Figure 11 is the circuit diagram of collecting sensor signal circuit；Wherein Fig. 8 is the electricity of X-axis analog signal add circuit
Lu Tu, Fig. 9 be Y-axis analog signal add circuit circuit diagram, Figure 10 be Z axis analog signal add circuit circuit diagram, Figure 11
For the circuit diagram of D/A converting circuit；
Figure 12 is the circuit diagram of governor circuit；
Figure 13 is the circuit diagram of serial ports attitude measurement circuit；
Figure 14 is the circuit diagram of RTC clock circuit；
Figure 15 is the circuit diagram of data transmission circuit；
Figure 16 is the circuit diagram of SD card storage circuit；
Figure 17 is the circuit diagram of file management circuit；
Figure 18-Figure 20 is the circuit diagram of external interface circuit；Wherein Figure 18 is the circuit diagram of junction block circuit, and Figure 19 is logical
With the circuit diagram of insert row circuit, Figure 20 is the circuit diagram of connector circuit.
Embodiment
The present invention is further analyzed below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of measuring circuit of very geographical three-component magnetometer, including governor circuit I, power circuit II,
Collecting sensor signal circuit III, external interface circuit IV, data transmission circuit V, SD card storage circuit VI, serial ports posture are surveyed
Measure circuit VII, RTC clock circuit VIII, file management circuit Ⅸ.
Power circuit II includes+15V regulator circuits, -15V regulator circuits ,+5V regulator circuits ,+4.5V reference voltages electricity
Road ,+3.3V regulator circuits ,+3.3V switching power circuits ,+2.5V reference voltage circuits；
As shown in Fig. 2,+15V regulator circuits, -15V regulator circuits include switching power source chip U1, capacitance C1-C3；Capacitance
It is grounded after one end of C1, the 2 feet connection of switching power source chip U1, the 1 foot connection of the other end, switching power source chip U1 of capacitance C1
It is followed by+24V power supplys；3 feet of a termination switching power source chip U1 of capacitance C2, as+15V power output ends；Capacitance C2's is another
One end, one end of capacitance C3,4 feet of switching power source chip U1 are grounded after connecting；Another termination switching power source chip of capacitance C3
5 feet of U1, as -15V power output ends；Switching power source chip U1 uses the DC-DC switching power source chips of Texas Instrument.
As shown in figure 3 ,+5V regulator circuits include switching power source chip U2, polar capacitor Cp1-Cp4, resistance R1-R4, electricity
Feel L1, capacitance C4-C6, light emitting diode D1；7 feet of switching power source chip U2, one end of resistance R1, polar capacitor Cp1 are just
Pole, the cathode of polar capacitor Cp2, the cathode of polar capacitor Cp3 connect+24V power supplys；Anode, the polar capacitor of polar capacitor Cp1
Anode, the anode of polar capacitor Cp3 of Cp2 is grounded respectively；The other end of resistance R1, the 5 foot connecting resistances of switching power source chip U2
One end of R2；It is grounded after the 6 feet connection of the other end, switching power source chip U2 of resistance R2；A termination Switching Power Supply of capacitance C4
1 foot of chip U2, the other end of capacitance C4, one end of inductance L1, the cathode of diode D1 connect 8 feet of switching power source chip U2；
The plus earth of diode D1；The other end of inductance L1, one end of resistance R3, the cathode of polar capacitor Cp4, the one of capacitance C5
End, one end connection of capacitance C6, as+5V power output ends；The other end of resistance R3, a termination Switching Power Supply core of resistance R4
4 feet of piece U2；The anode of polar capacitor Cp4, resistance R4 other end connection after be grounded, the other end of capacitance C5, capacitance C6
The other end is grounded respectively；The remaining pin of switching power source chip U2 is hanging；Switching power source chip U2 uses the switch of Texas Instrument
Power supply chip TPS5420.
As shown in figure 4 ,+4.5V reference voltage circuits include reference voltage chip U6, operational amplifier chip U7, inductance
L2, polar capacitor Cp8, capacitance C19-C24, resistance R20-R21；One end of inductance L2, the cathode of polar capacitor Cp8, capacitance C19
A termination reference voltage chip U7 2 feet；+ 5V the output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L2；Polarity electricity
It is grounded after holding the 4 feet connection of the anode of Cp8, the other end of capacitance C19, reference voltage chip U6；A termination benchmark of resistance R20
6 feet of voltage chips U6, the other end of resistance R20,3 feet of a termination operational amplifier chip U7 of capacitance C21, capacitance C21
The other end ground connection；5 feet of a termination reference voltage chip U6 of capacitance C20, the other end ground connection of capacitance C20；Operation amplifier
The 4 feet ground connection of device chip U7；One end of capacitance C22, the 7 feet connection of operational amplifier chip U7 are followed by the+5V of+5V regulator circuits
Output end of pressure-stabilizing, the other end ground connection of capacitance C22；6 feet of a termination operational amplifier chip U7 of resistance R21, resistance R21's
The other end, one end connection of one end of capacitance C23, capacitance C24, as+4.5V reference voltage output ends, capacitance C23's is another
End, the other end of capacitance C24 are grounded respectively；Reference voltage chip U6, the remaining pin of operational amplifier chip U7 are hanging；Benchmark
Voltage chips U6 uses the reference voltage chip REF5045 of Texas Instrument；Operational amplifier chip U7 uses the essence of Texas Instrument
Close amplifier chip OPA376.
As shown in figure 5 ,+3.3V regulator circuits include regulated power supply chip U10, polar capacitor Cp10, capacitance C34-C36；
The 3 feet connection of the cathode of polar capacitor Cp10, one end of capacitance C34, regulated power supply chip U10 is followed by power vd D, polar capacitor
Anode, the other end of capacitance C34 of Cp10 is grounded respectively；The 1 foot ground connection of regulated power supply chip U10；One end of capacitance C35, electricity
Hold 2 feet of a termination regulated power supply chip U10 of C36, as+3.3V the voltage output ends of+3.3V regulator circuits, capacitance C35
The other end, the other end of capacitance C36 is grounded respectively；Regulated power supply chip U10 uses regulated power supply chip LM1117.
As shown in fig. 6 ,+3.3V switching power circuits include switching power source chip U11, capacitance C37-C40, resistance R23, hair
Optical diode D3；One end of capacitance C38, one end of capacitance C37,3 feet of switching power source chip U11, to be followed by+5V steady for the connection of 4 feet
+ 5V the output end of pressure-stabilizing of volt circuit, is grounded, capacitance C38 after the 2 feet connection of the other end, switching power source chip U11 of capacitance C37
The other end, switching power source chip U11 1 foot connection after be grounded；One end of capacitance C39, one end of capacitance C40, resistance R23
One end, 5 feet of switching power source chip U11,6 feet connect the+3.3V output end of pressure-stabilizing for being followed by+3.3V regulator circuits, capacitance C39's
The other end, the other end of capacitance C40 are grounded respectively, the anode of the other end sending and receiving optical diode D3 of resistance R23, light emitting diode
The minus earth of D3；The remaining pin of switching power source chip U11 is hanging；Switching power source chip U11 is using Texas Instrument
Switching power source chip TPS7350.
As shown in fig. 7 ,+2.5V reference voltage circuits include reference voltage chip U15, operational amplifier chip U16, inductance
L3, polar capacitor Cp13, capacitance C56-C61, resistance R33-R34；One end of inductance L3, the cathode of polar capacitor Cp13, capacitance
2 feet of a termination reference voltage chip U15 of the C56 ,+5V output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L3, pole
Property the anode of capacitance Cp13, the other end of capacitance C56, reference voltage chip U15 the connection of 4 feet after be grounded；One end of resistance R33
Connect 6 feet of reference voltage chip U15, the other end of resistance R33,3 feet of a termination operational amplifier chip U16 of capacitance C58,
The other end ground connection of capacitance C58；5 feet of a termination reference voltage chip U15 of capacitance C57, the other end ground connection of capacitance C57；
The 4 feet ground connection of operational amplifier chip U16；It is steady that the 7 feet connection of one end of capacitance C59, operational amplifier chip U16 is followed by+5V
+ 5V the output end of pressure-stabilizing of volt circuit, the other end ground connection of capacitance C59；The 6 of one termination operational amplifier chip U16 of resistance R34
Foot, one end connection of the other end of resistance R34, one end of capacitance C60, capacitance C61, as+2.5V reference voltage output ends, electricity
The other end, the other end of capacitance C61 for holding C60 are grounded respectively；Reference voltage chip U15, operational amplifier chip U16 other
Pin is hanging；Reference voltage chip U15 uses the reference voltage chip REF5045 of Texas Instrument；Operational amplifier chip U16 is adopted
With the accurate amplifier chip OPA376 of Texas Instrument.
Collecting sensor signal circuit III includes X-axis, Y-axis, three analog signal add circuits of Z axis and digital-to-analogue conversion electricity
Road；
As shown in figure 8, X-axis analog signal add circuit includes operational amplifier chip U3, resistance R5-R9, capacitance C7-
C10, polar capacitor Cp5；One end of resistance R5, one end of resistance R6, the one of resistance R7 terminate the 3 of operational amplifier chip U3
The foot ,+4.5V reference voltage output ends of another termination+4.5V reference voltage circuits of resistance R5, another termination electricity of resistance R6
Hold one end of C7, as X-axis magnetic field signal input terminal, the other end of another terminating resistor R7 of capacitance C7 and ground connection；Computing is put
The 4 feet ground connection of big device chip U3；1 foot of operational amplifier chip U3 and the connection of 2 feet are followed by power supply V_Back；The one of capacitance C8
End, 8 feet of the cathode of polar capacitor Cp5, operational amplifier chip U3 meet the+5V output end of pressure-stabilizing of+5V regulator circuits, capacitance C8
Another termination polar capacitor Cp5 anode and ground connection；One end connection of 6 feet, 7 feet, capacitance C10 of operational amplifier chip U3
As the output terminal of X-axis analog signal add circuit, 6 feet with insert row P2 are connected；One end of capacitance C9, a termination of resistance R8
5 feet of operational amplifier chip U3, the other end ground connection of capacitance C9, the other end of resistance R8, a termination capacitor C10 of resistance R9
The other end, another termination power V_Back of resistance R9；Operational amplifier chip U3 uses the accurate amplifier core of Texas Instrument
Piece OPA2376；
As shown in figure 9, Y-axis analog signal add circuit includes operational amplifier chip U4, resistance R10-R14, capacitance
C11-C14, polar capacitor Cp6；One end of resistance R10, one end of resistance R11, a termination operational amplifier chip of resistance R12
3 feet of U4 ,+4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of resistance R10, resistance R11's is another
One end of termination capacitor C11, as the input terminal of Y weeks magnetic field signal, the other end of another terminating resistor R12 of capacitance C11 is simultaneously
Ground connection；The 4 feet ground connection of operational amplifier chip U4；1 foot of operational amplifier chip U4 and the connection of 2 feet are followed by power supply V_Back；
One end of capacitance C12, the cathode of polar capacitor the Cp6 ,+5V output end of pressure-stabilizing of+5V regulator circuits meet operational amplifier chip U4
8 feet, the anode of another termination polar capacitor Cp6 of capacitance C12 and ground connection；6 feet, 7 feet, the capacitance of operational amplifier chip U4
One end connection of C14, as the output terminal of Y-axis analog signal add circuit, connects 4 feet with insert row P2；The one of capacitance C13
Hold, 5 feet of a termination operational amplifier chip U4 of resistance R13, the other end ground connection of capacitance C13, the other end of resistance R13,
The other end of a termination capacitor C14 of resistance R14, another termination power V_Back of resistance R14；Operational amplifier chip U4 is adopted
With the accurate amplifier chip OPA2376 of Texas Instrument；
As shown in Figure 10, Z axis analog signal add circuit includes operational amplifier chip U5, resistance R15-R19, capacitance
C15-C18, polar capacitor Cp7；One end of resistance R15, one end of resistance R16, a termination operational amplifier chip of resistance R17
3 feet of U5；+ 4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of resistance R15；Resistance R16's is another
One end of termination capacitor C15, the input terminal as Z axis magnetic field signal；The other end of another terminating resistor R17 of capacitance C15 is simultaneously
Ground connection；The 4 feet ground connection of operational amplifier chip U5；1 foot of operational amplifier chip U5 and the connection of 2 feet are followed by power supply V_Back；
One end of capacitance C16, the cathode of polar capacitor the Cp7 ,+5V output end of pressure-stabilizing of+5V regulator circuits meet operational amplifier chip U5
8 feet, the anode of another termination polar capacitor Cp7 of capacitance C16 and ground connection；6 feet, 7 feet, the capacitance of operational amplifier chip U5
One end connection of C18, as the output terminal of Z axis analog signal add circuit, connects 2 feet with insert row P2；The one of capacitance C17
Hold, 5 feet of a termination operational amplifier chip U5 of resistance R18, the other end ground connection of capacitance C17, the other end of resistance R18,
The other end of a termination capacitor C18 of resistance R19, another termination power V_Back of resistance R19；Operational amplifier chip U5 is adopted
With the accurate amplifier chip OPA2376 of Texas Instrument；
As shown in figure 11, D/A converting circuit includes modulus conversion chip U14, polar capacitor Cp11-Cp12, resistance R29-
R32, capacitance C48-C55, crystal oscillator X3；One end of capacitance C48, the cathode of polar capacitor Cp11,1 foot of modulus conversion chip U14
Connect+5V the output end of pressure-stabilizing of+5V regulator circuits；The other end, the anode of polar capacitor Cp11 of capacitance C48 connects and is grounded；Mould
4 feet of number conversion chip U14 connect the+2.5V reference voltage output ends of+2.5V reference voltage circuits；The 3 of modulus conversion chip U14
Foot, 6 feet, 7 feet, 9 feet, 11 feet, 13 feet, 5 feet, 2 feet ground connection；After one end of capacitance C49, the 8 feet connection of modulus conversion chip U14
Connect 6 feet with insert row P2, the other end ground connection of capacitance C49；One end of capacitance C50, the 10 feet connection of modulus conversion chip U14
It is followed by 4 feet of general insert row P2, the other end ground connection of capacitance C50；One end of capacitance C51,12 feet of modulus conversion chip U14 connect
Connect 2 feet for being followed by general insert row P2, the other end ground connection of capacitance C51；14 feet of modulus conversion chip U14 connect+3.3V voltage stabilizings electricity
+ 3.3V the output end of pressure-stabilizing on road；24 feet of a termination modulus conversion chip U14 of resistance R29, another termination master of resistance R29
Control 52 feet of circuit；23 feet of a termination modulus conversion chip U14 of resistance R30, another termination governor circuit of resistance R30
54 feet；22 feet of a termination modulus conversion chip U14 of resistance R31,53 feet of another termination governor circuit of resistance R31；Electricity
Hinder 21 feet of a termination modulus conversion chip U14 of R32,56 feet of another termination governor circuit of resistance R32；Analog-to-digital conversion core
The 20 feet ground connection of piece U14；One end of crystal oscillator X3,19 feet of a termination modulus conversion chip U14 of capacitance C54；Crystal oscillator X3's is another
One end, capacitance C55 a termination modulus conversion chip U14 18 feet；The other end of capacitance C54 and the other end of capacitance C55 connect
It is grounded after connecing；The 17 feet ground connection of modulus conversion chip U14；One end of capacitance C52, the cathode of polar capacitor Cp12, analog-to-digital conversion
15 feet, 16 feet of chip U14 connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；The other end and polar capacitor of capacitance C52
It is grounded after the anode connection of C12；Other pins of modulus conversion chip U14 are hanging；Modulus conversion chip U14 is using Texas Instrument
24 modulus conversion chip ADS1256.
As shown in figure 12, governor circuit I includes main control chip U12, resistance R24-R25, capacitance C41-C44, crystal oscillator X2；Electricity
Hold 12 feet of one end of C41 and a termination main control chip U12 of crystal oscillator X2, one end of capacitance C42 and another termination of crystal oscillator X2
13 feet of main control chip U12, the other end of capacitance C41 and the other end ground connection of capacitance C42,94 feet of main control chip U12 pass through
Resistance R24 is grounded；One end of resistance R25, capacitance C43 a termination main control chip U12 14 feet, another termination of resistance R25+
+ 3.3V the output end of pressure-stabilizing of 3.3V regulator circuits, the other end ground connection of capacitance C43；A termination main control chip U12 of capacitance C44
6 feet, the other end of capacitance C44,50 feet of main control chip U12,75 feet, 100 feet, 28 feet, 11 feet, 22 feet connect+3.3V voltage stabilizings
+ 3.3V the output end of pressure-stabilizing of circuit；20 feet of main control chip U12,49 feet, 74 feet, 99 feet, 10 feet, 19 feet ground connection；Main control chip
One end of resistance R29,53 feet connect one end of resistance R31 in analog to digital conversion circuit in the 52 feet connection analog to digital conversion circuit of U12,
One end of capacitance R30,83 feet connect 12 feet with insert row P2 in 54 feet connection analog to digital conversion circuit, and 56 feet connect analog to digital conversion circuit
One end of middle resistance R32,30 feet connect 5 feet of SD card storage circuit, and 31 feet connect 7 feet of SD card storage circuit, and 32 feet connect SD card and deposit
3 feet on storing up electricity road, 68 feet connect 8 feet with insert row P2, and 69 feet connect 10 feet with insert row P2, and 72 feet connect the 2 of connector SWD
Foot, 76 feet connect 3 feet of connector SWD, and 78 feet connect 2 feet of serial ports attitude measurement circuit, and 79 feet connect the 3 of serial ports attitude measurement circuit
Foot, 80 feet connect 14 feet with insert row P2, and 1 foot connects 3 feet of RTC clock circuit, and 2 feet connect 15 feet of RTC clock circuit, and 4 feet connect
16 feet of RTC clock circuit；The remaining pin of main control chip U12 is hanging；Main control chip U12 is using STMicw Electronics
STM32F103RCT6 chips.
As shown in figure 13, serial ports attitude measurement circuit VII includes serial ports attitude measurement chip U17, capacitance C62, polar capacitor
Cp14；7 feet, 8 feet, 4 feet of serial ports attitude measurement chip U17 are grounded respectively；One end of capacitance C62, polar capacitor Cp14 are just
Pole connects 1 foot of serial ports attitude measurement chip IC 16, and the other end, the anode of polar capacitor Cp14 of capacitance C62 are grounded respectively；Serial ports
2 feet of attitude measurement chip U17 connect 78 feet of governor circuit；3 feet of serial ports attitude measurement chip U17 connect the 79 of governor circuit
Foot；Other pins of serial ports attitude measurement chip U17 are hanging；Serial ports attitude measurement chip U17 is micro- scientific and technological using soft core
LEADIY-M3 chips.
As shown in figure 14, RTC clock circuit VIII includes clock chip U13, resistance R26-R28, capacitance C45-C46, button
Battery B1；One end of capacitance C45, one end of resistance R26, clock chip U13 2 feet connection be followed by+3.3V regulator circuits+
3.3V output end of pressure-stabilizing, the other end ground connection of capacitance C45, the 3 feet connection of the other end, clock chip U13 of resistance R26 are followed by leading
Control 1 foot of circuit；5 feet of clock chip U13,6 feet, 7 feet, 8 feet, 9 feet, 10 feet, 11 feet, 12 feet, 13 feet ground connection；Resistance R27
The 15 feet connection of one end, clock chip U13 be followed by 2 feet of governor circuit, one end of resistance R28,16 feet of clock chip U13
Connection is followed by 4 feet of governor circuit, the other end connection of the other end, resistance R28 of resistance R27 be followed by+3.3V regulator circuits+
3.3V output end of pressure-stabilizing；One end of capacitance C46, the cathode of button cell B1 connect 14 feet of clock chip U13, and capacitance C46's is another
One end is grounded, the anode ground connection of button cell B1；The remaining pin of clock chip U13 is hanging；Clock chip U13 is using kind profit half
The DS3231SN chips of conductor.
As shown in figure 15, data transmission circuit V includes multichannel RS-232 line drivers/receiver U8, capacitance C25-
C29, polar capacitor Cp9；1 foot, 3 feet of multichannel RS-232 line drivers/receiver U8 connect the two of capacitance C25 respectively
End, 4 feet, 5 feet connect the both ends of capacitance C26 respectively, and 15 feet are directly grounded, and 10 feet connect 8 with insert row P2 as signal output
Foot, 10 feet of 9 feet as signal input connection with insert row P2,6 feet are grounded by capacitance C29, and 2 feet are grounded by capacitance C28, electricity
Hold+5V the output end of pressure-stabilizing that one end of C27, the cathode of polar capacitor Cp9 and the connection of 16 feet are followed by+5V regulator circuits, capacitance C27
The other end, polar capacitor Cp9 anode connection after be grounded, 7 feet connect 4 feet of junction block P1, and 8 feet connect 3 feet of junction block P1, more
Passage RS-232 line drivers/other pins of receiver U8 are hanging；Multichannel RS-232 line drivers/receiver U8 is used
The MAX3232 chips of Texas Instrument.
As shown in figure 16, SD card storage circuit VI includes SDCard-U18, capacitance C63, resistance R35-R36；Capacitance C63's
The 4 feet connection of one end, SDCard-U18 is followed by the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end of capacitance C63,
It is grounded after the 6 feet connection of SDCard-U18；One end of resistance R35, the 3 feet connection of SDCard-U18 are followed by the 32 of governor circuit
Foot, the other end of resistance the R35 ,+3.3V output end of pressure-stabilizing of a termination+3.3V regulator circuits of resistance R36, resistance R36's is another
The 7 feet connection of one end, SDCard-U18 is followed by 31 feet of governor circuit；5 feet of SDCard-U18 connect 30 feet of governor circuit, and 2
Foot is grounded；The remaining pin of SDCard-U18 is hanging.
As shown in figure 17, file management circuit Ⅸ include file management control chip U9, capacitance C30-C33, resistance R22,
Light emitting diode D2, crystal oscillator X1；2 feet of a termination file management control chip U9 of capacitance C30, another termination of capacitance C30+
3.3V+3.3V the output end of pressure-stabilizing of regulator circuit；5 feet of file management control chip U9 connect 12 feet with insert row P2, and 6 feet connect
14 feet of general insert row P2；One end of capacitance C31, the 9 feet connection of file management control chip U9 are followed by+3.3V regulator circuits
+ 3.3V output end of pressure-stabilizing, the other end ground connection of capacitance C31；10 feet of file management control chip U9 connect 7 feet of junction block P1,
11 feet connect 6 feet of junction block P1；The 12 feet ground connection of file management control chip U9；13 feet of file management control chip U9,14
Foot connects the both ends of crystal oscillator X1 respectively；One end of capacitance C32, the 28 feet connection of one end of capacitance C33, file management control chip U9
It is followed by+3.3V the output end of pressure-stabilizing of+3.3V regulator circuits；The other end, the other end of capacitance C33 of capacitance C32 is grounded respectively；Hair
The cathode of optical diode D2 connects 24 feet of file management control chip U9, one end of the anode connecting resistance R22 of light emitting diode D2,
+ 3.3V the output end of pressure-stabilizing of another termination+3.3V regulator circuits of resistance R22；23 feet of file management control chip U9,21
Foot, 20 feet are grounded respectively；19 feet of file management control chip U9 connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；File
Other pins of management control chip U9 are hanging；File management control chip U9 uses CH376S chips.
External interface circuit IV includes junction block circuit, general insert row circuit and connector circuit；
As shown in figure 18, junction block circuit includes junction block P1, diode D4, polar capacitor Cp15；The sun of diode D4
Pole connects 1 foot of junction block P1, and the cathode of diode D4 meets power supply DC24V；2 feet of junction block P1,8 feet ground connection, 3 feet connect data biography
8 feet on transmission of electricity road, 4 feet connect 7 feet of data transmission circuit, and 6 feet connect 11 feet of file management circuit, and 7 feet connect file management circuit
10 feet；The cathode of polar capacitor Cp15 connects 5 feet of junction block P1, the anode ground connection of polar capacitor Cp15；
As shown in figure 19, general insert row circuit includes general insert row P2；3 feet of general insert row P2,5 feet, 7 feet, 9 feet, 11
Foot, 13 feet, 15 feet, 17 feet, 19 feet ground connection, 16 feet, 18 feet, 20 feet connect+5V power supplys, and 2 feet connect Z axis analog signal add circuit
12 feet of 7 feet, D/A converting circuit, 4 feet connect 10 feet of 7 feet of Y-axis analog signal add circuit, D/A converting circuit, and 6 feet connect
7 feet of X-axis analog signal add circuit, 8 feet of D/A converting circuit, 8 feet connect 10 feet of data transmission circuit, governor circuit
68 feet, 10 feet connect 69 feet of 9 feet of data transmission circuit, governor circuit, and 12 feet connect 5 feet, the governor circuit of file management circuit
83 feet, 14 feet connect 80 feet of 6 feet of file management circuit, governor circuit；
As shown in figure 20, connector circuit includes connector SWD；1 foot of connector SWD connects+3.3V power supplys, and 2 feet meet master
72 feet of circuit are controlled, 3 feet connect 76 feet of governor circuit, 4 feet ground connection.
Since circuit uses the MAG03MCL100 fluxgate sensors of Bartington companies of Britain, sensor believes magnetic
Voltage signal output number is changed into, voltage range is between [- 10V, 10V], and the high precision analogue conversion chip of in the market is only
The magnitude of voltage of energy conversion [0,5V], therefore mutually isostructural three axial simulation signal adder circuits are devised, for that will sense
Device output signal voltage value is converted into the acceptable magnitude of voltage of analog to digital conversion circuit.Serial ports attitude measurement circuit is designed, for reality
When measure the attitude information of magnetometer, and by transformation matrix of coordinates, magnetic field three-component under obtained carrier coordinate system will be measured
Be converted to the geomagnetic field component under true geographic coordinate system.
Circuit according to the present invention is very geographical lower three-component magnetometer measuring circuit, which has a wide range of application
It is general, space flight and aviation is cannot be only used for, also can operate with the environments such as subsea of complexity.Circuit can measure three under true geographic coordinate system in real time
Component vector magnetic field value, provides accurate initial data into figure to draw magnetic anomaly, is conducive to detection, the development of search technique.
Claims (8)
1. a kind of measuring circuit of very geographical three-component magnetometer, including power circuit, collecting sensor signal circuit, master control electricity
Road, serial ports attitude measurement circuit, RTC clock circuit, data transmission circuit, SD card storage circuit, file management circuit, to external
Mouth circuit, it is characterised in that：
The power circuit includes+15V regulator circuits, -15V regulator circuits ,+5V regulator circuits ,+4.5V reference voltages electricity
Road ,+3.3V regulator circuits ,+3.3V switching power circuits ,+2.5V reference voltage circuits；+ 15V regulator circuits, -15V voltage stabilizings electricity
Road powers to fluxgate sensor, and+5V regulator circuits provide stability high voltage for data transmission circuit, and and linear circuit
Less+the 4.5V of ripple and+2.5V are obtained, wherein+4.5V reference voltage circuits are used to be three in collecting sensor signal circuit
Axle mould intends signal adder circuit and provides high-precision reference voltage, and it is collecting sensor signal that+2.5V reference voltage circuits, which are used for,
D/A converting circuit provides stable reference voltage in circuit；+ 3.3V regulator circuits and+3.3V on-off circuits are then used for master control
Circuit, serial ports attitude measurement circuit, RTC clock circuit, SD card storage circuit, file management circuit with stable voltage；
The collecting sensor signal circuit includes X-axis, Y-axis, three analog signal add circuits of Z axis and digital-to-analogue conversion electricity
Road；
The X-axis analog signal add circuit includes operational amplifier chip U3, resistance R5-R9, capacitance C7-C10, polarity electricity
Hold Cp5；One end of resistance R5, one end of resistance R6, resistance R7 a termination operational amplifier chip U3 3 feet, resistance R5's
+ 4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits, one end of another termination capacitor C7 of resistance R6,
As X-axis magnetic field signal input terminal, the other end of another terminating resistor R7 of capacitance C7 and ground connection；Operational amplifier chip U3's
4 feet are grounded；1 foot of operational amplifier chip U3 and the connection of 2 feet are followed by power supply V_Back；One end of capacitance C8, polar capacitor Cp5
Cathode, 8 feet of operational amplifier chip U3 connect the+5V output end of pressure-stabilizing of+5V regulator circuits, another termination polarity of capacitance C8
The anode of capacitance Cp5 and ground connection；6 feet of operational amplifier chip U3,7 feet, one end of capacitance C10 are connected to X-axis simulation letter
The output terminal of number add circuit, connects 6 feet with insert row P2；One end of capacitance C9, a termination operational amplifier core of resistance R8
5 feet of piece U3, the other end ground connection of capacitance C9, the other end of resistance R8, the other end of a termination capacitor C10 of resistance R9, electricity
Hinder another termination power V_Back of R9；Operational amplifier chip U3 uses the accurate amplifier chip OPA2376 of Texas Instrument；
The Y-axis analog signal add circuit includes operational amplifier chip U4, resistance R10-R14, capacitance C11-C14, pole
Property capacitance Cp6；One end of resistance R10, one end of resistance R11, resistance R12 a termination operational amplifier chip U4 3 feet, electricity
Hinder+4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of R10, another termination capacitor of resistance R11
One end of C11, as the input terminal of Y weeks magnetic field signal, the other end of another terminating resistor R12 of capacitance C11 and ground connection；Computing
The 4 feet ground connection of amplifier chip U4；1 foot of operational amplifier chip U4 and the connection of 2 feet are followed by power supply V_Back；Capacitance C12's
One end, the cathode of polar capacitor the Cp6 ,+5V output end of pressure-stabilizing of+5V regulator circuits connect 8 feet of operational amplifier chip U4, capacitance
The anode of another termination polar capacitor Cp6 of C12 and ground connection；6 feet of operational amplifier chip U4,7 feet, one end of capacitance C14
Connection, as the output terminal of Y-axis analog signal add circuit, connects 4 feet with insert row P2；One end of capacitance C13, resistance R13
A termination operational amplifier chip U4 5 feet, the other end ground connection of capacitance C13, the other end of resistance R13, the one of resistance R14
The other end of termination capacitor C14, another termination power V_Back of resistance R14；Operational amplifier chip U4 uses Texas Instrument
Accurate amplifier chip OPA2376；
The Z axis analog signal add circuit includes operational amplifier chip U5, resistance R15-R19, capacitance C15-C18, pole
Property capacitance Cp7；One end of resistance R15, one end of resistance R16, resistance R17 a termination operational amplifier chip U5 3 feet；Electricity
Hinder+4.5V the reference voltage output ends of another termination+4.5V reference voltage circuits of R15；Another termination capacitor of resistance R16
One end of C15, the input terminal as Z axis magnetic field signal；The other end of another terminating resistor R17 of capacitance C15 and ground connection；Computing
The 4 feet ground connection of amplifier chip U5；1 foot of operational amplifier chip U5 and the connection of 2 feet are followed by power supply V_Back；Capacitance C16's
One end, the cathode of polar capacitor the Cp7 ,+5V output end of pressure-stabilizing of+5V regulator circuits connect 8 feet of operational amplifier chip U5, capacitance
The anode of another termination polar capacitor Cp7 of C16 and ground connection；6 feet of operational amplifier chip U5,7 feet, one end of capacitance C18
Connection, as the output terminal of Z axis analog signal add circuit, connects 2 feet with insert row P2；One end of capacitance C17, resistance R18
A termination operational amplifier chip U5 5 feet, the other end ground connection of capacitance C17, the other end of resistance R18, the one of resistance R19
The other end of termination capacitor C18, another termination power V_Back of resistance R19；Operational amplifier chip U5 uses Texas Instrument
Accurate amplifier chip OPA2376；
The D/A converting circuit includes modulus conversion chip U14, polar capacitor Cp11-Cp12, resistance R29-R32, capacitance
C48-C55, crystal oscillator X3；One end of capacitance C48, the cathode of polar capacitor Cp11,1 foot of modulus conversion chip U14 connect+5V voltage stabilizings
+ 5V the output end of pressure-stabilizing of circuit；The other end, the anode of polar capacitor Cp11 of capacitance C48 connects and is grounded；Modulus conversion chip
4 feet of U14 connect the+2.5V reference voltage output ends of+2.5V reference voltage circuits；3 feet of modulus conversion chip U14,6 feet, 7
Foot, 9 feet, 11 feet, 13 feet, 5 feet, 2 feet ground connection；One end of capacitance C49, the 8 feet connection of modulus conversion chip U14 are followed by general insert
Arrange 6 feet of P2, the other end ground connection of capacitance C49；One end of capacitance C50, the 10 feet connection of modulus conversion chip U14 are followed by general
4 feet of insert row P2, the other end ground connection of capacitance C50；Connected after one end of capacitance C51, the 12 feet connection of modulus conversion chip U14
With 2 feet of insert row P2, the other end of capacitance C51 is grounded；14 feet of modulus conversion chip U14 meet the+3.3V of+3.3V regulator circuits
Output end of pressure-stabilizing；24 feet of a termination modulus conversion chip U14 of resistance R29, the 52 of another termination governor circuit of resistance R29
Foot；23 feet of a termination modulus conversion chip U14 of resistance R30,54 feet of another termination governor circuit of resistance R30；Resistance
22 feet of a termination modulus conversion chip U14 of R31,53 feet of another termination governor circuit of resistance R31；The one of resistance R32
Terminate 21 feet of modulus conversion chip U14,56 feet of another termination governor circuit of resistance R32；The 20 of modulus conversion chip U14
Foot is grounded；One end of crystal oscillator X3,19 feet of a termination modulus conversion chip U14 of capacitance C54；The other end, the capacitance of crystal oscillator X3
18 feet of a termination modulus conversion chip U14 of C55；The other end of capacitance C54 is grounded after being connected with the other end of capacitance C55；
The 17 feet ground connection of modulus conversion chip U14；One end of capacitance C52, the cathode of polar capacitor Cp12, modulus conversion chip U14
15 feet, 16 feet connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；The other end of capacitance C52 and the anode of polar capacitor C12
It is grounded after connection；Other pins of modulus conversion chip U14 are hanging；Modulus conversion chip U14 uses 24 moduluses of Texas Instrument
Conversion chip ADS1256；
The governor circuit includes main control chip U12, resistance R24-R25, capacitance C41-C44, crystal oscillator X2；The one of capacitance C41
12 feet of a termination main control chip U12 of end and crystal oscillator X2, one end of capacitance C42 and another termination main control chip of crystal oscillator X2
13 feet of U12, the other end of capacitance C41 and the other end ground connection of capacitance C42,94 feet of main control chip U12 are connect by resistance R24
Ground；One end of resistance R25,14 feet of a termination main control chip U12 of capacitance C43, another termination+3.3V voltage stabilizings of resistance R25
+ 3.3V the output end of pressure-stabilizing of circuit, the other end ground connection of capacitance C43；6 feet of a termination main control chip U12 of capacitance C44, electricity
Hold the other end of C44,50 feet of main control chip U12,75 feet, 100 feet, 28 feet, 11 feet, 22 feet connect+3.3V regulator circuits+
3.3V output end of pressure-stabilizing；20 feet of main control chip U12,49 feet, 74 feet, 99 feet, 10 feet, 19 feet ground connection；The 52 of main control chip U12
One end of resistance R29,53 feet connect one end of resistance R31 in analog to digital conversion circuit in foot connection analog to digital conversion circuit, and 54 feet connect
One end of capacitance R30 in analog to digital conversion circuit is connect, 83 feet connect 12 feet with insert row P2, and 56 feet connect resistance in analog to digital conversion circuit
One end of R32,30 feet connect 5 feet of SD card storage circuit, and 31 feet connect 7 feet of SD card storage circuit, and 32 feet connect SD card storage circuit
3 feet, 68 feet are connected connects 10 feet with insert row P2 with 8 feet of insert row P2,69 feet, and 72 feet connect 2 feet of connector SWD, 76 feet
3 feet of connector SWD are connect, 78 feet connect 2 feet of serial ports attitude measurement circuit, and 79 feet connect 3 feet of serial ports attitude measurement circuit, 80 feet
14 feet with insert row P2 are connected, 1 foot connects 3 feet of RTC clock circuit, and 2 feet connect 15 feet of RTC clock circuit, and 4 feet connect RTC clock
16 feet of circuit, 21 feet connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；The remaining pin of main control chip U12 is hanging；It is main
Control the STM32F103RCT6 chips that chip U12 uses STMicw Electronics；
The serial ports attitude measurement circuit includes serial ports attitude measurement chip U17, capacitance C62, polar capacitor Cp14；Serial ports appearance
7 feet, 8 feet, 4 feet of state measurement chip U17 are grounded respectively；One end of capacitance C62, the cathode of polar capacitor Cp14, serial ports posture
1 foot of measurement chip U17 meets the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end, the polar capacitor Cp14 of capacitance C62
Anode be grounded respectively；2 feet of serial ports attitude measurement chip U17 connect 78 feet of governor circuit；Serial ports attitude measurement chip U17's
3 feet connect 79 feet of governor circuit；4,7, the 8 feet ground connection of serial ports attitude measurement chip U17；Serial ports attitude measurement chip U17 its
His pin is hanging；Serial ports attitude measurement chip U17 uses the micro- scientific and technological LEADIY-M3 chips of soft core；
The RTC clock circuit includes clock chip U13, resistance R26-R28, capacitance C45-C46, button cell B1；Capacitance
The 2 feet connection of one end of C45, one end of resistance R26, clock chip U13 is followed by the+3.3V voltage stabilizings output of+3.3V regulator circuits
End, the other end ground connection of capacitance C45, the 3 feet connection of the other end, clock chip U13 of resistance R26 are followed by 1 foot of governor circuit；
5 feet of clock chip U13,6 feet, 7 feet, 8 feet, 9 feet, 10 feet, 11 feet, 12 feet, 13 feet ground connection；One end of resistance R27, clock core
The 15 feet connection of piece U13 is followed by 2 feet of governor circuit, and one end of resistance R28, the 16 feet connection of clock chip U13 are followed by master control
4 feet of circuit, the other end connection of the other end, resistance R28 of resistance R27 are followed by the+3.3V voltage stabilizings output of+3.3V regulator circuits
End；One end of capacitance C46, the cathode of button cell B1 connect 14 feet of clock chip U13, the other end ground connection of capacitance C46, button
The anode ground connection of battery B1；The remaining pin of clock chip U13 is hanging；Clock chip U13 is using kind profit semiconductor
DS3231SN chips；
The data transmission circuit includes multichannel RS-232 line drivers/receiver U8, capacitance C25-C29, polarity electricity
Hold Cp9；1 foot, 3 feet of multichannel RS-232 line drivers/receiver U8 connect the both ends of capacitance C25,4 feet, 5 feet point respectively
Not Lian Jie capacitance C26 both ends, 15 feet are directly grounded, and 10 feet connect 8 feet with insert row P2 as signal output, and 9 feet are as letter
Number input connection 10 feet of insert row P2,6 feet are grounded by capacitance C29, and 2 feet are grounded by capacitance C28, one end of capacitance C27,
The cathode of polar capacitor Cp9 and the connection of 16 feet are followed by the+5V output end of pressure-stabilizing of+5V regulator circuits, the other end of capacitance C27, pole
Property capacitance Cp9 anode connection after be grounded, 7 feet connect 4 feet of junction block P1, and 8 feet meet 3 feet of junction block P1, multichannel RS-232
Line driver/other pins of receiver U8 are hanging；Multichannel RS-232 line drivers/receiver U8 is using Texas Instrument
MAX3232 chips；
The SD card storage circuit includes SDCard-U18, capacitance C63, resistance R35-R36；One end of capacitance C63,
The 4 feet connection of SDCard-U18 is followed by the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end, the SDCard- of capacitance C63
It is grounded after the 6 feet connection of U18；One end of resistance R35, the 3 feet connection of SDCard-U18 are followed by 32 feet of governor circuit, resistance
+ 3.3V the output end of pressure-stabilizing of the other end of R35, a termination+3.3V regulator circuits of resistance R36, the other end of resistance R36,
The 7 feet connection of SDCard-U18 is followed by 31 feet of governor circuit；5 feet of SDCard-U18 connect 30 feet of governor circuit, and 2 feet connect
Ground；The remaining pin of SDCard-U18 is hanging；
The file management circuit includes file management control chip U9, capacitance C30-C33, resistance R22, light emitting diode
D2, crystal oscillator X1；2 feet of a termination file management control chip U9 of capacitance C30, another termination+3.3V voltage stabilizings electricity of capacitance C30
+ 3.3V the output end of pressure-stabilizing on road；5 feet of file management control chip U9 connect 12 feet with insert row P2, and 6 feet are connected and use insert row P2
14 feet；One end of capacitance C31, the 9 feet connection of file management control chip U9 are followed by the+3.3V voltage stabilizings of+3.3V regulator circuits
Output terminal, the other end ground connection of capacitance C31；10 feet of file management control chip U9 connect 7 feet of junction block P1,11 foot wiring
6 feet of seat P1；The 12 feet ground connection of file management control chip U9；13 feet, 14 feet of file management control chip U9 connect crystalline substance respectively
Shake the both ends of X1；The 28 feet connection of one end of capacitance C32, one end of capacitance C33, file management control chip U9 is followed by+3.3V
+ 3.3V the output end of pressure-stabilizing of regulator circuit；The other end, the other end of capacitance C33 of capacitance C32 is grounded respectively；Light emitting diode
The cathode of D2 meets 24 feet of file management control chip U9, one end of the anode connecting resistance R22 of light emitting diode D2, resistance R22
Another termination+3.3V regulator circuits+3.3V output end of pressure-stabilizing；23 feet, 21 feet, 20 feet point of file management control chip U9
It is not grounded；19 feet of file management control chip U9 connect the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits；File management controls
Other pins of chip U9 are hanging；File management control chip U9 uses CH376S chips；
External interface circuit includes junction block circuit, general insert row circuit and connector circuit；
The junction block circuit includes junction block P1, diode D4, polar capacitor Cp15；The anode of diode D4 meets junction block P1
1 foot, the cathode of diode D4 meets power supply DC24V；2 feet of junction block P1,8 feet ground connection, 3 feet connect 8 feet of data transmission circuit,
4 feet connect 7 feet of data transmission circuit, and 6 feet connect 11 feet of file management circuit, and 7 feet connect 10 feet of file management circuit；Polarity electricity
The cathode for holding Cp15 connects 5 feet of junction block P1, the anode ground connection of polar capacitor Cp15；
The general insert row circuit includes general insert row P2；3 feet of general insert row P2,5 feet, 7 feet, 9 feet, 11 feet, 13 feet, 15
Foot, 17 feet, 19 feet ground connection, 16 feet, 18 feet, 20 feet connect+5V power supplys, and 2 feet connect 7 feet of Z axis analog signal add circuit, digital-to-analogue turns
12 feet of circuit are changed, 4 feet connect 10 feet of 7 feet of Y-axis analog signal add circuit, D/A converting circuit, and 6 feet connect X-axis simulation letter
7 feet, 8 feet of D/A converting circuit of number add circuit, 8 feet connect 68 feet of 10 feet of data transmission circuit, governor circuit, 10 feet
Connecing 9 feet, 69 feet of governor circuit of data transmission circuit, 12 feet connect 83 feet of 5 feet of file management circuit, governor circuit, and 14
Foot connects 80 feet of 6 feet of file management circuit, governor circuit；
The connector circuit includes connector SWD；1 foot of connector SWD connects+3.3V power supplys, and 2 feet connect the 72 of governor circuit
Foot, 3 feet connect 76 feet of governor circuit, 4 feet ground connection.
A kind of 2. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：+ the 15V
Regulator circuit, -15V regulator circuits include switching power source chip U1, capacitance C1-C3；One end of capacitance C1, switching power source chip U1
The connection of 2 feet after be grounded, the 1 foot connection of the other end of capacitance C1, switching power source chip U1 is followed by+24V power supplys；The one of capacitance C2
3 feet of switching power source chip U1 are terminated, as+15V power output ends；The other end of capacitance C2, one end of capacitance C3, switch electricity
It is grounded after the 4 feet connection of source chip U1；5 feet of another termination switching power source chip U1 of capacitance C3, export as -15V power supplys
End；Switching power source chip U1 uses the DC-DC switching power source chips of Texas Instrument.
A kind of 3. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：+ the 5V
Regulator circuit includes switching power source chip U2, polar capacitor Cp1-Cp4, resistance R1-R4, inductance L1, capacitance C4-C6, luminous two
Pole pipe D1；7 feet of switching power source chip U2, one end of resistance R1, the cathode of polar capacitor Cp1, polar capacitor Cp2 cathode,
The cathode of polar capacitor Cp3 connects+24V power supplys；The anode of polar capacitor Cp1, the anode of polar capacitor Cp2, polar capacitor Cp3
Anode is grounded respectively；One end of the other end of resistance R1, the 5 foot connecting resistance R2 of switching power source chip U2；The other end of resistance R2,
It is grounded after the 6 feet connection of switching power source chip U2；1 foot of a termination switching power source chip U2 of capacitance C4, capacitance C4's is another
End, one end of inductance L1, the cathode of diode D1 connect 8 feet of switching power source chip U2；The plus earth of diode D1；Inductance L1
The other end, one end of resistance R3, the cathode of polar capacitor Cp4, one end of capacitance C5, capacitance C6 one end connection, be used as+5V
Power output end；4 feet of the other end of resistance R3, a termination switching power source chip U2 of resistance R4；Polar capacitor Cp4's is negative
Pole, the other end of resistance R4 are grounded after connecting, and the other end, the other end of capacitance C6 of capacitance C5 are grounded respectively；Switching Power Supply core
The remaining pin of piece U2 is hanging；Switching power source chip U2 uses the switching power source chip TPS5420 of Texas Instrument.
A kind of 4. measuring circuit of very geographical three deal magnetometers as claimed in claim 1, it is characterised in that：Described+
4.5V reference voltage circuits include reference voltage chip U6, operational amplifier chip U7, inductance L2, polar capacitor Cp8, capacitance
C19-C24, resistance R20-R21；One end of inductance L2, the cathode of polar capacitor Cp8, a termination reference voltage core of capacitance C19
2 feet of piece U7；+ 5V the output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L2；Anode, the capacitance of polar capacitor Cp8
It is grounded after the 4 feet connection of the other end, reference voltage chip U6 of C19；6 feet of a termination reference voltage chip U6 of resistance R20,
3 feet of the other end of resistance R20, a termination operational amplifier chip U7 of capacitance C21, the other end ground connection of capacitance C21；Capacitance
5 feet of a termination reference voltage chip U6 of C20, the other end ground connection of capacitance C20；The 4 feet ground connection of operational amplifier chip U7；
One end of capacitance C22, the 7 feet connection of operational amplifier chip U7 are followed by the+5V output end of pressure-stabilizing of+5V regulator circuits, capacitance C22
The other end ground connection；6 feet of a termination operational amplifier chip U7 of resistance R21, the other end of resistance R21, the one of capacitance C23
End, one end connection of capacitance C24, as+4.5V reference voltage output ends, the other end, the other end of capacitance C24 of capacitance C23
It is grounded respectively；Reference voltage chip U6, the remaining pin of operational amplifier chip U7 are hanging；Reference voltage chip U6 uses Dezhou
The reference voltage chip REF5045 of instrument；Operational amplifier chip U7 uses the accurate amplifier chip OPA376 of Texas Instrument.
A kind of 5. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：Described+
3.3V regulator circuits include regulated power supply chip U10, polar capacitor Cp10, capacitance C34-C36；The cathode of polar capacitor Cp10,
One end of capacitance C34, the 3 feet connection of regulated power supply chip U10 are followed by power vd D, anode, the capacitance C34 of polar capacitor Cp10
The other end be grounded respectively；The 1 foot ground connection of regulated power supply chip U10；One end of capacitance C35, a termination voltage stabilizing electricity of capacitance C36
2 feet of source chip U10, as+3.3V the voltage output ends of+3.3V regulator circuits, the other end of capacitance C35, capacitance C36 it is another
One end is grounded respectively；Regulated power supply chip U10 uses regulated power supply chip LM1117.
A kind of 6. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：Described+
3.3V switching power circuits include switching power source chip U11, capacitance C37-C40, resistance R23, light emitting diode D3；Capacitance C38
One end, one end of capacitance C37,3 feet of switching power source chip U11,4 feet connection be followed by+5V regulator circuits+5V voltage stabilizings output
End, is grounded, the other end, the Switching Power Supply core of capacitance C38 after the 2 feet connection of the other end, switching power source chip U11 of capacitance C37
It is grounded after the 1 foot connection of piece U11；One end of capacitance C39, one end of capacitance C40, one end of resistance R23, switching power source chip
5 feet of U11, the connection of 6 feet are followed by the+3.3V output end of pressure-stabilizing of+3.3V regulator circuits, the other end of capacitance C39, capacitance C40
The other end is grounded respectively, the anode of the other end sending and receiving optical diode D3 of resistance R23, the minus earth of light emitting diode D3；Open
The remaining pin of powered-down source chip U11 is hanging；Switching power source chip U11 using Texas Instrument switching power source chip
TPS7350。
A kind of 7. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：Described+
2.5V reference voltage circuits include reference voltage chip U15, operational amplifier chip U16, inductance L3, polar capacitor Cp13, electricity
Hold C56-C61, resistance R33-R34；One end of inductance L3, the cathode of polar capacitor Cp13, a termination reference voltage of capacitance C56
2 feet of chip the U15 ,+5V output end of pressure-stabilizing of another termination+5V regulator circuits of inductance L3, anode, the electricity of polar capacitor Cp13
It is grounded after holding the 4 feet connection of the other end, reference voltage chip U15 of C56；A termination reference voltage chip U15's of resistance R33
6 feet, the other end of resistance R33,3 feet of a termination operational amplifier chip U16 of capacitance C58, another termination of capacitance C58
Ground；5 feet of a termination reference voltage chip U15 of capacitance C57, the other end ground connection of capacitance C57；Operational amplifier chip U16
4 feet ground connection；+ 5V the voltage stabilizings that one end of capacitance C59, the 7 feet connection of operational amplifier chip U16 are followed by+5V regulator circuits are defeated
Outlet, the other end ground connection of capacitance C59；6 feet of one termination operational amplifier chip U16 of resistance R34, resistance R34 it is another
End, one end connection of one end of capacitance C60, capacitance C61, as+2.5V reference voltage output ends, the other end, the electricity of capacitance C60
The other end for holding C61 is grounded respectively；Reference voltage chip U15, other pins of operational amplifier chip U16 are hanging；Benchmark electricity
Chip U15 is pressed to use the reference voltage chip REF5045 of Texas Instrument；Operational amplifier chip U16 uses the essence of Texas Instrument
Close amplifier chip OPA376.
A kind of 8. measuring circuit of very geographical three-component magnetometer as claimed in claim 1, it is characterised in that：Three axis
Fluxgate sensor is the MAG03MCL100 fluxgate sensors of Bartington companies of Britain.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711434898.3A CN107907914B (en) | 2017-12-26 | 2017-12-26 | Measurement circuit of true geography three-component magnetometer |
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| CN201711434898.3A CN107907914B (en) | 2017-12-26 | 2017-12-26 | Measurement circuit of true geography three-component magnetometer |
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