CN105785461B - A kind of measuring circuit of seabed three-component magnetometer - Google Patents
A kind of measuring circuit of seabed three-component magnetometer Download PDFInfo
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- CN105785461B CN105785461B CN201610305803.7A CN201610305803A CN105785461B CN 105785461 B CN105785461 B CN 105785461B CN 201610305803 A CN201610305803 A CN 201610305803A CN 105785461 B CN105785461 B CN 105785461B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
Abstract
The present invention relates to a kind of measuring circuit of seabed three-component magnetometer.The present invention includes power circuit, collecting sensor signal circuit, data transfer and storage circuit, governor circuit.Wherein power circuit includes+13V, 13V ,+5V ,+3.3V output power supply circuits ,+6.5V buffer voltagcs circuit ,+5V bias voltages output circuit ,+2.5V reference voltage power circuits.Collecting sensor signal circuit includes D/A converting circuit and three structure identical signal conditioning circuits.The present invention make use of the high sensitivity, high-resolution, low-power consumption feature of fluxgate sensor, seabed three-component mgnetic observations realized with reference to measuring circuit using the fluxgate sensor of Bartington companies of Britain.
Description
Technical field
The invention belongs to seabed magnetic force exploration technique field, and in particular to one kind is based on Bartington companies of Britain magnetic flux
The seabed three-component mgnetic observations circuit of door sensor.
Background technology
The earth is natural magnet, and various instruments, mineral reserve and military weapon are influenceed by earth's magnetic field, in part
In the range of, ferromagnetic material inevitably produces magnetic moment by magnetic field of the earth magnetization, forms the magnetic source of outside radiation field, accordingly
Influence earth's magnetic field distribution so as to cause magnetic field abnormal, influence also is produced on Magnetic Sensor.Therefore in certain space region,
Magnetic field in continuous detection zone, analysis contrast magnetic field data, can be positioned and be tracked to target using magnetic anomaly phenomenon.
The country, it is one of effective means of geologic survey and exploration all the time that magnetic method, which is reconnoitred, as countries in the world are provided to seabed mineral
The pay attention to day by day of source exploitation, magnetic method is reconnoitred gradually to be applied in marine field.Geologist is surveyed by carrying out magnetic force to seabed
Visit, regional magnetic field map, situations such as analyzing and positioning hydrothermal solution sulfide spout and mineral reserve are distributed then are described according to magnetic data.
The content of the invention
It is an object of the invention to provide a kind of measuring circuit of seabed three-component magnetometer.
The present invention includes power circuit, collecting sensor signal circuit, data transfer and storage circuit, governor circuit.
Described power circuit includes+13V output power supply circuits, -13V output power supply circuits ,+6.5V buffer voltagcs electricity
Road ,+5V bias voltages output circuit ,+5V output power supply circuits ,+3.3V output power supply circuits ,+2.5V reference voltages power supply electricity
Road；Power circuit is responsible for providing positive and negative 13V power supplys powers to fluxgate sensor, and passes through+6.5V buffer voltagcs circuit and line
Property circuit obtains ripple less 5V and 3.3V；Wherein 5V powers to high-precision adc ,+5V bias voltage output circuits
High accuracy, the bias voltage of Low Drift Temperature are provided for signal conditioning circuit；+ 2.5V reference voltages power circuit is modulus conversion chip
Stable reference voltage is provided.
Described collecting sensor signal circuit includes D/A converting circuit and three structure identical signal conditioning circuits.
Described signal conditioning circuit includes operational amplifier chip IC11, resistance R16 one end, resistance R17 one end,
A resistance R18 termination operational amplifier chip IC11 3 pin, resistance R16 another termination+5V bias voltage output circuits
+ 5V bias voltage outputs, the resistance R18 other end, operational amplifier chip IC11 4 pin ground connection；Operational amplifier chip
One end of IC11 2 pin and 1 pin connecting resistance R19, the termination+5V outputs of operational amplifier chip IC11 8 pin and electric capacity C25
+ 5V the power output ends of power circuit, electric capacity C25 other end ground connection；The resistance R19 other end and an electric capacity C26 termination
Resistance R20 one end, the resistance R20 other end and an electric capacity C27 termination operational amplifier chip IC11 5 pin, electric capacity C27
The other end ground connection；The electric capacity C26 other end, operational amplifier chip IC11 6 pin and the connection of 7 pin, are used as signal condition electricity
The output end on road；Three axles of the other end of resistance R17 in three signal conditioning circuits respectively as three axis fluxgate sensor M
Three inputs of field voltage signal；Operational amplifier chip IC11 uses the accurate amplifier chip OPA2376 of Texas Instrument.
Described D/A converting circuit includes modulus conversion chip IC12, and resistance R21 one end, polar capacitor Cp14 are just
Pole, electric capacity C29 one end, an electric capacity C30 termination modulus conversion chip IC12 4 pin, resistance R21 another termination+2.5V
+ 2.5V the reference voltage output ends of reference voltage power circuit, resistance R22 one end, polar capacitor Cp14 negative pole, electric capacity
3 pin of the C29 other end, electric capacity C30 another termination modulus conversion chip IC12, resistance R22 other end ground connection；Modulus turns
One end connection for changing 1 pin, polar capacitor Cp13 positive pole and electric capacity C28 of chip IC 12 is followed by the+5V of+5V output power supply circuits
Power output end, polar capacitor Cp13 negative pole and electric capacity C28 other end ground connection；Modulus conversion chip IC12 6 pin, 8 pin,
Output end of 10 pin respectively with three signal conditioning circuits is connected；Modulus conversion chip IC12 5 pin by resistance R23 with+
+ 2.5V reference voltage output ends the connection of 2.5V reference voltage power circuits, modulus conversion chip IC12 2 pin ground connection；Modulus
Conversion chip IC12 14 pin, 15 pin, 16 pin, electric capacity C31 one end, polar capacitor Cp15 positive pole connects+3.3V out-put supplies
+ 3.3V the power output ends of circuit, modulus conversion chip IC12 17 pin, the electric capacity C31 other end, polar capacitor Cp15 it is negative
Pole is grounded；Crystal oscillator Y1 one end and an electric capacity C33 termination modulus conversion chip IC12 19 pin, crystal oscillator the Y1 other end and electricity
Hold a C32 termination modulus conversion chip IC12 18 pin, the electric capacity C33 other end and electric capacity C32 other end ground connection；Resistance
A R24 termination modulus conversion chip IC12 24 pin, a resistance R25 termination modulus conversion chip IC12 23 pin, resistance
A R26 termination modulus conversion chip IC12 22 pin, a resistance R27 termination modulus conversion chip IC12 21 pin, resistance
A R28 termination modulus conversion chip IC12 20 pin, resistance R28 other end ground connection；Modulus conversion chip IC12 uses moral
24 modulus conversion chip ADS1256 of state instrument.
Described data transfer includes multichannel RS-232 line drivers/receiver IC13, multichannel with storage circuit
RS-232 line drivers/receiver IC13 1 pin, 3 pin connect electric capacity C34 two ends respectively, and 4 pin, 5 pin connect electric capacity respectively
C35 two ends, 15 pin are directly grounded, and 6 pin are grounded by electric capacity C36, and 2 pin are grounded by electric capacity C37,16 pin and electric capacity C38's
One end connects the+3.3V power output ends for being followed by+3.3V output power supply circuits, electric capacity C38 other end ground connection；Multichannel RS-
232 line drivers/receiver IC13 uses the MAX3232 chips of Texas Instrument.
Described governor circuit includes main control chip IC14, electric capacity C39 one end and a crystal oscillator Y2 termination main control chip
IC14 5 pin, electric capacity C40 one end and crystal oscillator Y2 another termination main control chip IC14 6 pin, the electric capacity C39 other end and
Electric capacity C40 other end ground connection, main control chip IC14 60 pin are grounded by resistance R29；Resistance R30 one end, electric capacity C41
One end, a switch K1 termination main control chip IC14 7 pin, resistance R30 another termination+3.3V output power supply circuits+
3.3V power output ends, are grounded after the other end connection of electric capacity the C41 other end and switch K1；Main control chip IC14 1 pin connects
Button cell BT1 positive pole, button cell BT1 negative pole ground connection, main control chip IC14 32 pin, 48 pin, 64 pin, 19 pin, 13
Pin, which is connected, is followed by+3.3V the power output ends of+3.3V output power supply circuits, main control chip IC14 31 pin, 47 pin, 63 pin, 18
It is grounded after pin, the connection of 12 pin；Main control chip IC14 30 pin light two by resistance R31 sending and receiving optical diodes LED2 positive pole
Pole pipe LED2 negative pole ground connection；Electric capacity C42 one end, resistance R32 one end, the 3 of a crystal oscillator Y3 termination main control chip IC14
Pin, electric capacity C43 one end, the resistance R32 other end, crystal oscillator Y3 another termination main control chip IC14 4 pin, electric capacity C42's
It is grounded after the other end and electric capacity C43 other end connection；Main control chip IC14 34 pin meet resistance R24 in D/A converting circuit
The other end, 35 pin connect the other end of resistance R26 in D/A converting circuit, and 36 pin meet the another of resistance R25 in D/A converting circuit
End, 38 pin connect the other end of resistance R27 in D/A converting circuit；Main control chip IC14 16 pin connect data transfer and storage circuit
Middle multichannel RS-232 line drivers/receiver IC13 10 pin, main control chip IC14 17 pin connect data transfer and storage
Multichannel RS-232 line drivers/receiver IC13 9 pin in circuit；Main control chip IC14 20 pin, 21 pins, 22 are drawn
Pin, 23 pins are respectively On-Chip peripheral SPI1 NSS, SCLK, MISO, MOSI pin output end, are connected with the spi bus of TF cards
Connect；Main control chip IC14 uses the STM32F103RCT6 chips of STMicw Electronics.
The present invention realizes a kind of measuring circuit of seabed three-component magnetometer based on fluxgate.It make use of magnetic flux door sensor
The features such as high-resolution of sensor, low-power consumption.In power supply branch, preceding level power supply increases the work of power supply using DC/DC
Efficiency, rear class power utilization linear power supply reduces the ripple and noise of power supply, provided for subsequent conditioning circuit it is reliable and stable, totally
Power supply.When circuit works, operating current is about 170mA, realizes low-power consumption.In sensor signal conditioning circuit, selection
The amplifier chip of extremely low noise improves the effective resolution of measuring circuit with high-precision modulus conversion chip.
Brief description of the drawings
Fig. 1 is the entire block diagram of circuit of the present invention；
Fig. 2 is the overall structure figure of power circuit in Fig. 1；
Fig. 3 be Fig. 2 in+13V output power supply circuits circuit diagram；
Fig. 4 be Fig. 2 in -13V output power supply circuits circuit diagram；
Fig. 5 be Fig. 2 in+6.5V buffer voltagc circuits circuit diagram；
Fig. 6 be Fig. 2 in+5V bias voltage output circuits circuit diagram；
Fig. 7 be Fig. 2 in+5V output power supply circuits circuit diagram；
Fig. 8 be Fig. 2 in+3.3V output power supply circuits circuit diagram；
Fig. 9 be Fig. 2 in+2.5V reference voltage power circuits circuit diagram；
Figure 10 is the circuit diagram of the signal conditioning circuit in collecting sensor signal circuit in Fig. 1；
Figure 11 is the circuit diagram of the D/A converting circuit in collecting sensor signal circuit in Fig. 1；
Figure 12 is the circuit diagram of data transfer and storage circuit in Fig. 1；
Figure 13 is the circuit diagram of governor circuit in Fig. 1.
Embodiment
As shown in figure 1, a kind of measuring circuit of seabed three-component magnetometer, including power circuit I, collecting sensor signal
Circuit II, data transfer and storage circuit III, governor circuit IV.
As shown in Fig. 2 power circuit I includes+13V output power supply circuits 1, -13V output power supply circuits 2 ,+6.5V bufferings
Potential circuit 3 ,+5V bias voltages output circuit 4 ,+5V output power supply circuits 5 ,+3.3V output power supply circuits 6 ,+2.5V benchmark
Voltage supply circuit 7.Power circuit is responsible for providing positive and negative 13V power supplys powers to fluxgate sensor, and passes through+6.5V buffering electricity
Volt circuit obtains ripple less 5V and 3.3V with linear circuit.Wherein 5V powers to high-precision adc ,+5V biased electricals
Voltage follower circuit provides high accuracy, the bias voltage of Low Drift Temperature for signal conditioning circuit.+ 2.5V reference voltages power circuit is mould
Number conversion chip provides stable reference voltage.
As shown in figure 3 ,+13V output power supply circuits include switching power source chip IC1 and linear power supply chip IC 2.Switch electricity
Source chip IC1 7 pin and an electric capacity C1 termination+24V power supplys, switching power source chip IC1 6 pin, 9 pin and electric capacity C1 it is another
End ground connection；Switching power source chip IC1 1 pin connects electric capacity C2 one end, and switching power source chip IC1 8 pin meet the another of electric capacity C2
End, Schottky diode D1 negative electrode connect inductance L1 one end, inductance the L1 other end, resistance R1 one end, polar capacitor Cp1
Positive pole, electric capacity C3 one end, electric capacity C4 one end, polar capacitor Cp2 positive terminal power supply chip IC2 3 pin, resistance
4 pin of the R1 other end and a resistance R2 termination switching power source chip IC1；Resistance R3 one end and a resistance R4 terminated line
Property power supply chip IC2 1 pin, polar capacitor Cp3 positive pole and resistance R4 another terminated line power supply chip IC2 2 pin make
For+13V power output ends, the resistance R2 other end, polar capacitor Cp1 negative pole, the electric capacity C3 other end, electric capacity C4 it is another
End, polar capacitor Cp2 negative pole, the resistance R3 other end, polar capacitor Cp3 negative pole ground connection.Switching power source chip IC1 is used
The switching power source chip TPS5430 of Texas Instrument, linear power supply chip IC 2 uses the linear power supply chip of Linear Tech
LT1086-ADJ。
As shown in figure 4, -13V output power supply circuits include switching power source chip IC3 and linear power supply chip IC 4.Switch electricity
One termination+24V power supplys of source chip IC3 7 pin, electric capacity C5 one end and electric capacity C6, electric capacity C5 other end ground connection；Switch electricity
Source chip IC3 1 pin connects electric capacity C7 one end, switching power source chip IC3 8 pin, the electric capacity C7 other end, Schottky diode
D2 negative electrode connects inductance L2 one end；Resistance R5 one end, a resistance R6 termination switching power source chip IC3 4 pin, electric capacity C6
The other end, the resistance R5 other end, polar capacitor Cp4 negative pole, electric capacity C8 one end, electric capacity C9 one end, power supply chip
IC3 6 pin and 9 pin connect and polar capacitor Cp5 negative terminal power supply chip IC4 2 pin；The inductance L2 other end, electricity
The resistance R6 other end, polar capacitor Cp4 positive pole, the electric capacity C8 other end, the electric capacity C9 other end connects and is grounded；Resistance R7
One end and resistance R8 a terminated line power supply chip IC4 1 pin, the resistance R8 other end, polar capacitor Cp6 negative pole phase
Connect, as -13V power output ends, resistance the R7 other end, polar capacitor Cp5 positive pole, electric capacity Cp6 positive pole connect and connect
Ground.Switching power source chip IC3 uses the switching power source chip TPS5430 of Texas Instrument, and linear power supply chip IC 4 uses Dezhou instrument
The linear power supply chip LM337 of device company.
As shown in figure 5 ,+6.5V buffer voltagcs circuit include switching power source chip IC5, switching power source chip IC5 7 pin,
Electric capacity C10 one end and an electric capacity C11 termination+24V power supplys, switching power source chip IC5 6 pin and 9 pin, electric capacity C10 it is another
One end and electric capacity C11 other end ground connection；Switching power source chip IC5 1 pin connects electric capacity C12 one end, switching power source chip IC5
8 pin, the electric capacity C12 other end, Schottky diode D3 negative electrode connect inductance L3 one end, inductance the L1 other end, resistance
R9 one end, polar capacitor Cp7 positive pole, electric capacity C13 one end, electric capacity C14 one end connecting to neutral Ohmic resistance R11 one end,
4 pin of the resistance R9 other end and a resistance R10 termination switching power source chip IC5；The resistance R10 other end, polar capacitor
Cp7 negative pole, the electric capacity C13 other end, electric capacity C14 other end ground connection；Zero-ohm resistor R11 other end conduct+6.5V
Buffer voltagc output end.Switching power source chip IC5 uses the switching power source chip TPS5430 of Texas Instrument.
As shown in fig. 6 ,+5V bias voltages output circuit includes reference voltage chip IC 6,2 pin of reference voltage chip IC 6
With+6.5V buffer voltagc the output ends of an electric capacity C15 termination+6.5V buffer voltagc circuits, 4 pin of reference voltage chip IC 6
It is grounded with the electric capacity C15 other end, 5 pin of reference voltage chip IC 6 are grounded by electric capacity C16, the 6 of reference voltage chip IC 6
It is grounded after pin and resistance R12 one end connection by electric capacity C17, the resistance R12 other end is connected with electric capacity C18 one end, is made
For+5V bias voltage outputs, the electric capacity C18 other end is grounded.Reference voltage chip IC 6 uses the reference voltage of Texas Instrument
Chip REF5050.
As shown in fig. 7 ,+5V output power supply circuits include linear power supply chip IC 7,3 pin of linear power supply chip IC 7 and pole
Property electric capacity Cp8 positive pole connect the+6.5V buffer voltagc output ends of+6.5V buffer voltagc circuits, resistance R13 one end and polarity electricity
Hold Cp9 positive terminal power supply chip IC7 1 pin, polar capacitor Cp10 positive terminal power supply chip IC7 2 pin are made
For+5V power output ends, polar capacitor Cp8 negative pole, polar capacitor Cp8 negative pole, polar capacitor Cp8 negative pole and resistance
It is grounded after R13 other end connection.Linear power supply chip IC 7 uses the linear power supply chip LT1086-5V of Linear Tech.
As shown in figure 8 ,+3.3V output power supply circuits include linear power supply chip IC 8,3 pin of linear power supply chip IC 8,
+ 5V the power output ends of polar capacitor Cp11 positive pole, an electric capacity C19 termination+5V output power supply circuits；Polar capacitor Cp11
Positive pole, a resistance R14 terminated line power supply chip IC8 2 pin, be used as+3.3V power output ends；Resistance R14's is another
Terminate the positive pole of LED 1,1 pin, polar capacitor Cp11 negative pole, the polar capacitor Cp12 of linear power supply chip IC 8
Negative pole, the negative pole of LED 1, electric capacity C19 the other end ground connection.Linear power supply chip IC 8 is using Linear Tech
Linear power supply chip LT1086-3.3V.
As shown in figure 9 ,+2.5V reference voltages power circuit includes reference voltage chip IC 9 and operational amplifier chip
IC10；+ 5V the power output ends of 2 pin of reference voltage chip IC 9 and an electric capacity C20 termination+5V output power supply circuits, benchmark
Voltage chips IC9 4 pin and electric capacity C20 other end ground connection, 5 pin of reference voltage chip IC 9 are grounded by electric capacity C21, base
It is grounded after one end connection of quasi- voltage chips IC9 6 pin and resistance R15 by electric capacity C22；The resistance R15 other end, electric capacity
A C23 termination operational amplifier chip IC10 3 pin, operational amplifier chip IC10 2 pin, electric capacity C23 another termination
Ground；Operational amplifier chip IC10 5 pin are connected the+5V power supplys output for being followed by+5V output power supply circuits with electric capacity C24 one end
End, electric capacity C24 other end ground connection；Operational amplifier chip IC10 1 pin and the connection of 4 pin, are exported as+2.5V reference voltages
End.Reference voltage chip IC 9 uses moral using reference voltage the chip REF5025, operational amplifier chip IC10 of Texas Instrument
The accurate amplifier chip OPA376 of state instrument.
Collecting sensor signal circuit II includes D/A converting circuit and three structure identical signal conditioning circuits.
As shown in Figure 10, signal conditioning circuit includes operational amplifier chip IC11, resistance R16 one end, resistance R17
One end, a resistance R18 termination operational amplifier chip IC11 3 pin, resistance R16 another termination+5V bias voltages output
+ 5V the bias voltage outputs of circuit, the resistance R18 other end, operational amplifier chip IC11 4 pin ground connection；Operation amplifier
One end of 2 pin of device chip IC 11 and 1 pin connecting resistance R19, operational amplifier chip IC11 8 pin and an electric capacity C25 termination+
+ 5V the power output ends of 5V output power supply circuits, electric capacity C25 other end ground connection；The resistance R19 other end and electric capacity C26's
One terminating resistor R20 one end, the resistance R20 other end and an electric capacity C27 termination operational amplifier chip IC11 5 pin,
Electric capacity C27 other end ground connection；The electric capacity C26 other end, operational amplifier chip IC11 6 pin and the connection of 7 pin, are used as signal
The output end of modulate circuit；The other end of resistance R17 in three signal conditioning circuits is respectively as three axis fluxgate sensor M
Three-axle magnetic field voltage signal three inputs.Operational amplifier chip IC11 uses the accurate amplifier chip of Texas Instrument
OPA2376.Three axis fluxgate sensor M use the fluxgate sensor of Bartington companies of Britain.
Three axis fluxgate sensors are output as analog voltage signal, and scope is -10V to 10V.The high accuracy that this circuit is selected
The measurable analog-value range of modulus conversion chip is 0 to 5V.Therefore need to be converted into [- 10V, 10V] by linear circuit
Modulus conversion chip is measurable [0,5V].If fluxgate output voltage signal is Vin, analog-digital converter input signal is Vo,
If bias voltage is 5V, then the relation between input and output is：Vo=0.25*Vin+2.5.Because fluxgate sensor has
Bandwidth is imitated in 0-3KHz, so needing to realize the active low-pass filter that a cut-off frequency is about 10KHz in linear circuit.
If sensor exports analog voltage signal for Vin, voltage is Vo after signal condition.
Then linear circuit equation is：
Wherein vias=5V.
Active low-pass filter transmission function is：
As shown in figure 11, D/A converting circuit includes modulus conversion chip IC12, resistance R21 one end, polar capacitor
Cp14 positive pole, electric capacity C29 one end, an electric capacity C30 termination modulus conversion chip IC12 4 pin, the resistance R21 other end
Connect+2.5V the reference voltage output ends of+2.5V reference voltage power circuits, resistance R22 one end, polar capacitor Cp14 it is negative
Pole, the electric capacity C29 other end, electric capacity C30 another termination modulus conversion chip IC12 3 pin, resistance R22 another termination
Ground；Modulus conversion chip IC12 1 pin, one end connection of polar capacitor Cp13 positive pole and electric capacity C28 are followed by+5V out-put supplies
+ 5V the power output ends of circuit, polar capacitor Cp13 negative pole and electric capacity C28 other end ground connection；Modulus conversion chip IC12
Output end respectively with three signal conditioning circuits of 6 pin, 8 pin, 10 pin be connected；Modulus conversion chip IC12 5 pin pass through electricity
Resistance R23 is connected with+2.5V the reference voltage output ends of+2.5V reference voltage power circuits, and modulus conversion chip IC12 2 pin connect
Ground；Modulus conversion chip IC12 14 pin, 15 pin, 16 pin, electric capacity C31 one end, that polar capacitor Cp15 positive pole meets+3.3V is defeated
Go out+3.3V the power output ends of power circuit, modulus conversion chip IC12 17 pin, the electric capacity C31 other end, polar capacitor
Cp15 negative pole ground connection；Crystal oscillator Y1 one end and an electric capacity C33 termination modulus conversion chip IC12 19 pin, crystal oscillator Y1's is another
One end and electric capacity C32 a termination modulus conversion chip IC12 18 pin, the electric capacity C33 other end and the electric capacity C32 other end
Ground connection；A resistance R24 termination modulus conversion chip IC12 24 pin, a resistance R25 termination modulus conversion chip IC12's
23 pin, a resistance R26 termination modulus conversion chip IC12 22 pin, a resistance R27 termination modulus conversion chip IC12's
21 pin, a resistance R28 termination modulus conversion chip IC12 20 pin, resistance R28 other end ground connection.Modulus conversion chip
IC12 uses 24 modulus conversion chip ADS1256 of Texas Instrument.
As shown in figure 12, data transfer includes multichannel RS-232 line drivers/receiver IC13 with storage circuit III,
Multichannel RS-232 line drivers/receiver IC13 1 pin, 3 pin connect electric capacity C34 two ends respectively, and 4 pin, 5 pin connect respectively
Electric capacity C35 two ends are connect, 15 pin are directly grounded, and 6 pin are grounded by electric capacity C36, and 2 pin are grounded by electric capacity C37,16 pin and electric capacity
C38 one end connection is followed by the+3.3V power output ends of+3.3V output power supply circuits, electric capacity C38 other end ground connection.Lead to more
Road RS-232 line drivers/receiver IC13 uses the MAX3232 chips of Texas Instrument.
As shown in figure 13, governor circuit IV includes main control chip IC14, electric capacity C39 one end and a crystal oscillator Y2 termination master
6 pin of 5 pin of chip IC 14, electric capacity C40 one end and crystal oscillator Y2 another termination main control chip IC14 are controlled, electric capacity C39's is another
One end and electric capacity C40 other end ground connection, main control chip IC14 60 pin are grounded by resistance R29；Resistance R30 one end, electricity
Hold C41 one end, a switch K1 termination main control chip IC14 7 pin, resistance R30 another termination+3.3V out-put supplies electricity
+ 3.3V the power output ends on road, are grounded after the other end connection of electric capacity the C41 other end and switch K1；The 1 of main control chip IC14
Pin connects button cell BT1 positive pole, button cell BT1 negative pole ground connection, main control chip IC14 32 pin, 48 pin, 64 pin, 19
Pin, the connection of 13 pin are followed by the+3.3V power output ends of+3.3V output power supply circuits, main control chip IC14 31 pin, 47 pin, 63
It is grounded after pin, 18 pin, the connection of 12 pin；Main control chip IC14 30 pin pass through resistance R31 sending and receiving optical diodes LED2 positive pole, hair
Optical diode LED2 negative pole ground connection；Electric capacity C42 one end, resistance R32 one end, a crystal oscillator Y3 termination main control chip IC14
3 pin, electric capacity C43 one end, the resistance R32 other end, crystal oscillator Y3 another termination main control chip IC14 4 pin, electric capacity C42
The other end and electric capacity C43 the other end connection after be grounded；Main control chip IC14 34 pin meet resistance R24 in D/A converting circuit
The other end, 35 pin connect the other end of resistance R26 in D/A converting circuit, and 36 pin connect the another of resistance R25 in D/A converting circuit
One end, 38 pin connect the other end of resistance R27 in D/A converting circuit；Main control chip IC14 16 pin connect data transfer and storage electricity
Multichannel RS-232 line drivers/receiver IC13 10 pin in road, main control chip IC14 17 pin connect data transfer with depositing
Multichannel RS-232 line drivers/receiver IC13 9 pin in storing up electricity road；Main control chip IC14 20 pin, 21 pins, 22 are drawn
Pin, 23 pins are respectively On-Chip peripheral SPI1 NSS, SCLK, MISO, MOSI pin output end, are connected with the spi bus of TF cards
Connect.Main control chip IC14 uses the STM32F103RCT6 chips of STMicw Electronics.
Because circuit uses the fluxgate sensor of Bartington companies of Britain, magnetic signal is changed into voltage by sensor
Signal output, voltage range is between [- 10V, 10V], and the high precision analogue conversion chip of in the market can only be changed [0,5V]
Magnitude of voltage, therefore devise signal conditioning circuit (AIAO) realize by the magnitude of voltage of sensor output signal be converted into modulus turn
Change the acceptable magnitude of voltage of chip.Because the effective bandwidth of MAG03MCL100 fluxgate sensors is in 0-3KHz, so in signal
Conditioning link needs to realize that the active low-pass filter (LPF) that a cut-off frequency is about 10KHz filters out making an uproar for sensor output
Sound.Voltage signal after active low-pass filter enters analog to digital conversion circuit, and main control unit passes through spi bus and modulus
Conversion chip communicates, and obtains the digital quantity of voltage signal.Digital quantity is converted into analog quantity by main control unit, calculates the analog quantity
Under corresponding three-axle magnetic field value, and calculate total magnetic field value.On the one hand, main control unit combination real-time clock and magnetic field value, and will
Real-time magnetic field value is stored in TF cards.On the other hand, real-time magnetic field value is actively sent logical to outside by main control unit by serial ports
Believe port.
Circuit involved in the present invention can be mounted in no magnetic or weak magnetic pull-type underwater kit, carry out pull-type earth magnetism
Measurement, can be mounted on underwater robot, can also be mounted on the multi-parameter observation platform of seabed.The measurable seabed of circuit is real
When three-component Vector Magnetic Field value, be seabed vector magnetic anomaly into figure initial data is provided, be seabed search, clearance, explore mineral reserve
There is provided may.
Claims (9)
1. a kind of measuring circuit of seabed three-component magnetometer, including power circuit, collecting sensor signal circuit, data transfer
With storage circuit, governor circuit, it is characterised in that：
Described power circuit includes+13V output power supply circuits, -13V output power supply circuits ,+6.5V buffer voltagcs circuit ,+5V
Bias voltage output circuit ,+5V output power supply circuits ,+3.3V output power supply circuits ,+2.5V reference voltage power circuits；Power supply
Circuit is responsible for providing positive and negative 13V power supplys powers to fluxgate sensor, and passes through+6.5V buffer voltagcs circuit and obtained with linear circuit
To ripple less 5V and 3.3V；Wherein 5V powers to high-precision adc, and+5V bias voltages output circuit is adjusted for signal
Manage circuit and high accuracy, the bias voltage of Low Drift Temperature are provided；+ 2.5V reference voltages power circuit provides stable for modulus conversion chip
Reference voltage；
Described collecting sensor signal circuit includes D/A converting circuit and three structure identical signal conditioning circuits；
Described signal conditioning circuit includes operational amplifier chip IC11, resistance R16 one end, resistance R17 one end, resistance
A R18 termination operational amplifier chip IC11 3 the pin ,+5V of resistance R16 another termination+5V bias voltage output circuits
Bias voltage output, the resistance R18 other end, operational amplifier chip IC11 4 pin ground connection；Operational amplifier chip IC11
2 pin and 1 pin connecting resistance R19 one end, operational amplifier chip IC11 8 pin and an electric capacity C25 termination+5V out-put supplies
+ 5V the power output ends of circuit, electric capacity C25 other end ground connection；The resistance R19 other end and an electric capacity C26 terminating resistor
R20 one end, the resistance R20 other end and an electric capacity C27 termination operational amplifier chip IC11 5 pin, electric capacity C27's is another
One end is grounded；The electric capacity C26 other end, operational amplifier chip IC11 6 pin and the connection of 7 pin, are used as signal conditioning circuit
Output end；Three-axle magnetic field of the other end of resistance R17 in three signal conditioning circuits respectively as three axis fluxgate sensor M
Three inputs of voltage signal；Operational amplifier chip IC11 uses the accurate amplifier chip OPA2376 of Texas Instrument；
Described D/A converting circuit includes modulus conversion chip IC12, resistance R21 one end, polar capacitor Cp14 positive pole,
Electric capacity C29 one end, an electric capacity C30 termination modulus conversion chip IC12 4 pin, resistance R21 another termination+2.5V benchmark
+ 2.5V the reference voltage output ends of voltage supply circuit, resistance R22 one end, polar capacitor Cp14 negative pole, electric capacity C29
3 pin of the other end, electric capacity C30 another termination modulus conversion chip IC12, resistance R22 other end ground connection；Analog-to-digital conversion core
One end connection of piece IC12 1 pin, polar capacitor Cp13 positive pole and electric capacity C28 is followed by the+5V power supplys of+5V output power supply circuits
Output end, polar capacitor Cp13 negative pole and electric capacity C28 other end ground connection；Modulus conversion chip IC12 6 pin, 8 pin, 10 pin
The output end with three signal conditioning circuits is connected respectively；Modulus conversion chip IC12 5 pin pass through resistance R23 and+2.5V bases
+ 2.5V reference voltage output ends the connection of quasi- voltage supply circuit, modulus conversion chip IC12 2 pin ground connection；Analog-to-digital conversion core
Piece IC12 14 pin, 15 pin, 16 pin, electric capacity C31 one end, polar capacitor Cp15 positive pole connect+3.3V output power supply circuits+
3.3V power output ends, modulus conversion chip IC12 17 pin, the electric capacity C31 other end, polar capacitor Cp15 negative pole ground connection；
Crystal oscillator Y1 one end and electric capacity C33 a termination modulus conversion chip IC12 19 pin, the crystal oscillator Y1 other end and electric capacity C32's
One termination modulus conversion chip IC12 18 pin, the electric capacity C33 other end and electric capacity C32 other end ground connection；The one of resistance R24
Terminate modulus conversion chip IC12 24 pin, a resistance R25 termination modulus conversion chip IC12 23 pin, the one of resistance R26
Terminate modulus conversion chip IC12 22 pin, a resistance R27 termination modulus conversion chip IC12 21 pin, the one of resistance R28
Terminate modulus conversion chip IC12 20 pin, resistance R28 other end ground connection；Modulus conversion chip IC12 is using Texas Instrument
24 modulus conversion chip ADS1256；
Described data transfer includes multichannel RS-232 line drivers/receiver IC13, multichannel RS- with storage circuit
232 line drivers/receiver IC13 1 pin, 3 pin connect electric capacity C34 two ends respectively, and 4 pin, 5 pin connect electric capacity C35 respectively
Two ends, 15 pin are directly grounded, and 6 pin are grounded by electric capacity C36, and 2 pin are grounded by electric capacity C37,16 pin and electric capacity C38 one end
Connection is followed by the+3.3V power output ends of+3.3V output power supply circuits, electric capacity C38 other end ground connection；Multichannel RS-232 lines
Road driver/receiver IC13 uses the MAX3232 chips of Texas Instrument；
Described governor circuit includes main control chip IC14, electric capacity C39 one end and a crystal oscillator Y2 termination main control chip IC14
5 pin, electric capacity C40 one end and crystal oscillator Y2 another termination main control chip IC14 6 pin, electric capacity the C39 other end and electric capacity
C40 other end ground connection, main control chip IC14 60 pin are grounded by resistance R29；Resistance R30 one end, the one of electric capacity C41
End, a switch K1 termination main control chip IC14 7 the pin ,+3.3V of resistance R30 another termination+3.3V output power supply circuits
Power output end, is grounded after the other end connection of electric capacity the C41 other end and switch K1；Main control chip IC14 1 pin connects button
Battery BT1 positive pole, button cell BT1 negative pole ground connection, main control chip IC14 32 pin, 48 pin, 64 pin, 19 pin, 13 pin connect
Connect+3.3V the power output ends for being followed by+3.3V output power supply circuits, main control chip IC14 31 pin, 47 pin, 63 pin, 18 pin, 12
It is grounded after pin connection；Main control chip IC14 30 pin pass through resistance R31 sending and receiving optical diodes LED2 positive pole, light emitting diode
LED2 negative pole ground connection；Electric capacity C42 one end, resistance R32 one end, a crystal oscillator Y3 termination main control chip IC14 3 pin, electricity
Appearance C43 one end, the resistance R32 other end, crystal oscillator Y3 another termination main control chip IC14 4 pin, the electric capacity C42 other end
It is grounded with after electric capacity C43 other end connection；Main control chip IC14 34 pin meet the another of resistance R24 in D/A converting circuit
End, 35 pin connect the other end of resistance R26 in D/A converting circuit, and 36 pin connect the other end of resistance R25 in D/A converting circuit, 38
Pin connects the other end of resistance R27 in D/A converting circuit；Main control chip IC14 16 pin connect many in data transfer and storage circuit
Passage RS-232 line drivers/receiver IC13 10 pin, main control chip IC14 17 pin connect data transfer and storage circuit
Middle multichannel RS-232 line drivers/receiver IC13 9 pin；Main control chip IC14 20 pin, 21 pins, 22 pins, 23
Pin is respectively On-Chip peripheral SPI1 NSS, SCLK, MISO, MOSI pin output end, is connected with the spi bus of TF cards；Master control
Chip IC 14 uses the STM32F103RCT6 chips of STMicw Electronics.
2. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+13V is defeated
Going out power circuit includes switching power source chip IC1 and linear power supply chip IC 2；Switching power source chip IC1 7 pin and electric capacity C1's
One termination+24V power supplys, the other end ground connection of switching power source chip IC1 6 pin, 9 pin and electric capacity C1；Switching power source chip IC1's
1 pin connects electric capacity C2 one end, and switching power source chip IC1 8 pin connect the electric capacity C2 other end, Schottky diode D1 negative electrode and connect
Inductance L1 one end, inductance the L1 other end, resistance R1 one end, polar capacitor Cp1 positive pole, electric capacity C3 one end, electric capacity
C4 one end, polar capacitor Cp2 positive terminal power supply chip IC2 3 pin, the resistance R1 other end and resistance R2 one end
Connect switching power source chip IC1 4 pin；Resistance R3 one end and a resistance R4 terminated line power supply chip IC2 1 pin, polarity
2 pin of electric capacity Cp3 positive pole and resistance R4 another terminated line power supply chip IC2, are used as+13V power output ends, resistance R2
The other end, polar capacitor Cp1 negative pole, the electric capacity C3 other end, the electric capacity C4 other end, polar capacitor Cp2 negative pole, electricity
Hinder the R3 other end, polar capacitor Cp3 negative pole ground connection；Switching power source chip IC1 uses the switching power source chip of Texas Instrument
TPS5430, linear power supply chip IC 2 uses the linear power supply chip LT1086-ADJ of Linear Tech.
3. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described -13V is defeated
Going out power circuit includes switching power source chip IC3 and linear power supply chip IC 4；Switching power source chip IC3 7 pin, electric capacity C5
One end and an electric capacity C6 termination+24V power supplys, electric capacity C5 other end ground connection；Switching power source chip IC3 1 pin meets electric capacity C7
One end, switching power source chip IC3 8 pin, the electric capacity C7 other end, Schottky diode D2 negative electrode connect the one of inductance L2
End；Resistance R5 one end, a resistance R6 termination switching power source chip IC3 4 pin, the electric capacity C6 other end, resistance R5 it is another
One end, polar capacitor Cp4 negative pole, electric capacity C8 one end, electric capacity C9 one end, power supply chip IC3 6 pin and 9 pin connect and
Polar capacitor Cp5 negative terminal power supply chip IC4 2 pin；The inductance L2 other end, the resistance R6 other end, polarity electricity
Positive pole, the electric capacity C8 other end, the electric capacity C9 other end for holding Cp4 connect and are grounded；Resistance R7 one end and the one of resistance R8
Linear power supply chip IC4 1 pin is terminated, resistance the R8 other end, polar capacitor Cp6 negative pole connect, defeated as -13V power supplys
Go out end, resistance the R7 other end, polar capacitor Cp5 positive pole, electric capacity Cp6 positive pole connect and be grounded；Switching power source chip IC3
Using the switching power source chip TPS5430 of Texas Instrument, linear power supply chip IC 4 uses the linear power supply core of Texas Instruments
Piece LM337.
4. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+6.5V
Buffer voltagc circuit includes switching power source chip IC5, switching power source chip IC5 7 pin, electric capacity C10 one end and electric capacity C11
One termination+24V power supplys, switching power source chip IC5 6 pin and 9 pin, another termination of the electric capacity C10 other end and electric capacity C11
Ground；Switching power source chip IC5 1 pin connects electric capacity C12 one end, switching power source chip IC5 8 pin, the electric capacity C12 other end,
Schottky diode D3 negative electrode connects inductance L3 one end, the inductance L1 other end, resistance R9 one end, polar capacitor Cp7
Positive pole, electric capacity C13 one end, electric capacity C14 one end connecting to neutral Ohmic resistance R11 one end, resistance the R9 other end and resistance R10
A termination switching power source chip IC5 4 pin；The resistance R10 other end, polar capacitor Cp7 negative pole, electric capacity C13 it is another
End, electric capacity C14 other end ground connection；Zero-ohm resistor R11 other end conduct+6.5V buffer voltagc output ends；Switching Power Supply
Chip IC 5 uses the switching power source chip TPS5430 of Texas Instrument.
5. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+5V is inclined
Putting voltage follower circuit includes reference voltage chip IC 6,2 pin of reference voltage chip IC 6 and an electric capacity C15 termination+6.5V
+ 6.5V buffer voltagc the output ends of buffer voltagc circuit, 4 pin of reference voltage chip IC 6 and electric capacity C15 other end ground connection,
5 pin of reference voltage chip IC 6 are grounded by electric capacity C16, after one end connection of 6 pin and resistance R12 of reference voltage chip IC 6
It is grounded by electric capacity C17, the resistance R12 other end is connected with electric capacity C18 one end, is used as+5V bias voltage outputs, electric capacity
C18 other end ground connection；Reference voltage chip IC 6 uses the reference voltage chip REF5050 of Texas Instrument.
6. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+5V is defeated
Going out power circuit includes linear power supply chip IC 7, and 3 pin of linear power supply chip IC 7 and polar capacitor Cp8 positive pole meet+6.5V
+ 6.5V buffer voltagc the output ends of buffer voltagc circuit, resistance R13 one end and polar capacitor Cp9 positive terminal power supply
1 pin of chip IC 7, polar capacitor Cp10 positive terminal power supply chip IC7 2 pin, is used as+5V power output ends, polarity
It is grounded after electric capacity Cp8 negative pole, polar capacitor Cp8 negative pole, polar capacitor Cp8 negative pole and resistance R13 other end connection；
Linear power supply chip IC 7 uses the linear power supply chip LT1086-5V of Linear Tech.
7. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+3.3V
Output power supply circuit includes linear power supply chip IC 8,3 pin, polar capacitor Cp11 positive pole, the electric capacity of linear power supply chip IC 8
+ 5V the power output ends of a C19 termination+5V output power supply circuits；Polar capacitor Cp11 positive pole, a resistance R14 termination
2 pin of linear power supply chip IC 8, are used as+3.3V power output ends；Resistance R14 other end sending and receiving optical diode LED1 is just
Pole, 1 pin, polar capacitor Cp11 negative pole, polar capacitor Cp12 negative pole, the LED 1 of linear power supply chip IC 8
Negative pole, electric capacity C19 the other end ground connection；Linear power supply chip IC 8 uses the linear power supply chip LT1086- of Linear Tech
3.3V。
8. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Described+2.5V
Reference voltage power circuit includes reference voltage chip IC 9 and operational amplifier chip IC10；2 pin of reference voltage chip IC 9
With+5V the power output ends of an electric capacity C20 termination+5V output power supply circuits, 4 pin and electric capacity C20 of reference voltage chip IC 9
Other end ground connection, 5 pin of reference voltage chip IC 9 are grounded by electric capacity C21,6 pin and resistance of reference voltage chip IC 9
It is grounded after R15 one end connection by electric capacity C22；The resistance R15 other end, an electric capacity C23 termination operational amplifier chip
IC10 3 pin, operational amplifier chip IC10 2 pin, electric capacity C23 other end ground connection；Operational amplifier chip IC10 5 pin
+ 5V the power output ends for being followed by+5V output power supply circuits, electric capacity C24 other end ground connection are connected with electric capacity C24 one end；Fortune
Amplifier chip IC10 1 pin and the connection of 4 pin is calculated ,+2.5V reference voltage output ends are used as；Reference voltage chip IC 9 uses moral
Reference voltage the chip REF5025, operational amplifier chip IC10 of state instrument use the accurate amplifier chip of Texas Instrument
OPA376。
9. a kind of measuring circuit of seabed three-component magnetometer as claimed in claim 1, it is characterised in that：Three described axle magnetic
Open gate sensor is the MAG03MCL100 fluxgate sensors of Bartington companies of Britain.
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| CN106093807A (en) * | 2016-08-08 | 2016-11-09 | 杭州电子科技大学 | A kind of measuring circuit of three-component magnetic gradiometer |
| CN107907914B (en) * | 2017-12-26 | 2023-10-20 | 杭州电子科技大学 | Measurement circuit of true geography three-component magnetometer |
| CN108227017B (en) * | 2017-12-29 | 2019-05-17 | 清华大学 | Dedicated fluxgate detector towards waters unexploded |
| CN108227016B (en) * | 2017-12-29 | 2019-05-17 | 清华大学 | The dedicated fluxgate detector of chemical weapons is lost towards buried day |
| CN112284382A (en) * | 2020-10-23 | 2021-01-29 | 哈尔滨工程大学 | Combined navigation information processing device and underwater navigation system |
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| CN103701497A (en) * | 2013-12-26 | 2014-04-02 | 杭州电子科技大学 | Deck unit circuit of AC (Alternating Current) 500v power line carrier shipborne remote communication system |
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| CN201229411Y (en) * | 2008-07-29 | 2009-04-29 | 杭州电子科技大学 | Abysmal sea geomagnetic digital sensing circuit |
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Effective date of registration: 20200317 Address after: 310000 c1804-1805, building 2, No.452, No.6 street, Baiyang street, Jianggan economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU ZHICI SENSOR Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310018 Xiasha Higher Education Park No. 2 street Patentee before: HANGZHOU DIANZI University |