High-precision measuring nipple device

Abstract

The utility model discloses a high-precision measuring nipple device, which comprises a battery switch circuit, the battery switch circuit is connected with a power supply circuit for power supply, and the power supply circuit is also respectively connected with a system control circuit, an angle acquisition circuit and a wireless communication circuit for power supply; the system control circuit is connected with the angle acquisition circuit; and the system control circuit is also connected with the wireless communication circuit. The device is based on a six-axis sensor, has good measurement precision, is small in size and high in integration level, facilitates error correction, can provide high-precision angle measurement information, and can enable the measurement precision of a drilling track to reach the condition that the error is + / -0.2 degree when the inclination angle ranges from-90 degrees to + 90 degrees; and when the azimuth angle is 0-360 degrees, the error is + / -0.36 degrees.

Description

TECHNICAL FIELD

[0001] The utility model belongs to geological exploration technical field relates to drilling trajectory measurement, specifically relates to a kind of high-precision measuring nipple device. BACKGROUND

[0002] Drilling trajectory measurement technology is an important part of geophysical well logging technology, it can not only reflect the deviation of actual trajectory and design trajectory, has wide application in geological detection, gas disaster prevention and other aspects.Drilling trajectory measurement technology accuracy will directly affect the final measurement trajectory.In the drilling trajectory measurement device in the prior art, the measurement system of the magnetic resistance sensor used is large in size, high in power consumption and large in magnetic hysteresis;At the same time, the measurement device based on magnetic induction sensor is low in integration and complicated in design, and the error caused by environment, vibration and assembly is difficult to handle simply, so that the measurement accuracy of drilling trajectory measurement device is limited. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a high-precision measuring nipple device to solve the technical problem that the measurement accuracy of the drilling trajectory measurement device in the prior art needs to be further improved.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A measuring nipple device, comprising a battery switch circuit, the battery switch circuit is connected with power supply circuit for power supply, and the power supply circuit is also connected with system control circuit, angle acquisition circuit and wireless communication circuit for power supply.

[0006] The system control circuit is connected with the angle acquisition circuit.

[0007] The system control circuit is also connected with the wireless communication circuit.

[0008] The utility model also has the following technical features:

[0009] Specifically, the battery switch circuit comprises a battery J1, the negative electrode of the battery J1 is grounded, the positive electrode of the battery J1 is connected with one end of the resistor R4 in the battery switch circuit, the other end of the resistor R4 in the battery switch circuit is connected with the gate electrode of the field effect transistor Q1, and the source electrode of the field effect transistor Q1 is connected with the positive electrode of the battery J1.

[0010] The power supply circuit comprises a boost chip U1, the VOUT port of the boost chip U1 is connected with one end of the inductor L1 in the power supply circuit, and the other end of the inductor L1 in the power supply circuit is connected with the IN port of the current limiting chip U2.

[0011] The system control circuit comprises a chip U3.

[0012] The angle acquisition circuit comprises a chip U5.

[0013] The wireless communication circuit comprises a chip U4.

[0014] Specifically, the drain of the field effect transistor Q1 in the battery switch circuit is connected with the voltage input end of the power supply circuit.

[0015] The VIN port of the boost chip U1 in the power supply circuit, the L port of the boost chip U1, the EN port of the boost chip U1, and one end of the capacitor C1 in the power supply circuit are all connected with the voltage input end of the power supply circuit, and the other end of the capacitor C1 in the power supply circuit is grounded; the OUT port of the current limiting chip U2 in the power supply circuit is connected with the voltage input end of the system control circuit, the voltage input end of the angle acquisition circuit, and the voltage input end of the wireless communication circuit.

[0016] The VBAT port of the chip U3 in the system control circuit is connected with the voltage input end of the system control circuit, the VDD-1 port of the chip U3 is connected with the voltage input end of the system control circuit, the VDD-2 port of the chip U3 is connected with the voltage input end of the system control circuit, and the VDD-3 port of the chip U3 is connected with the voltage input end of the system control circuit.

[0017] The VDD_IO port of the chip U5 in the angle acquisition circuit is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the resistor R1 in the angle acquisition circuit, the other end of the resistor R1 in the angle acquisition circuit is connected with the SCL port of the chip U5, the SDA port of the chip U5 is connected with one end of the resistor R2 in the angle acquisition circuit, the other end of the resistor R2 in the angle acquisition circuit is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the capacitor C4 in the angle acquisition circuit, and the other end of the capacitor C4 in the angle acquisition circuit is grounded; the SCL end in the chip U5 is connected with the SCL end in the chip U3, the SDA end in the chip U5 is connected with the SDA end in the chip U3, the CS_A end in the chip U5 is connected with the CS_A end in the chip U3, the CS_M end in the chip U5 is connected with the CS_M end in the chip U3, and the DRDY end in the chip U5 is connected with the DRDY end in the chip U3.

[0018] The VDD port of the chip U4 in the wireless communication circuit is connected with a voltage input end of the wireless communication circuit, the voltage input end of the wireless communication circuit is also connected with one end of a capacitor C1 in the wireless communication circuit, the other end of the capacitor C1 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of a capacitor C2 in the wireless communication circuit, the other end of the capacitor C2 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of a resistor R17 in the wireless communication circuit, the other end of the resistor R17 in the wireless communication circuit is connected with the RES port of the chip U4, the other end of the resistor R17 in the wireless communication circuit is also connected with one end of a capacitor C22 in the wireless communication circuit, the other end of the capacitor C22 in the wireless communication circuit is grounded; the RX end in the chip U4 is connected with the RX end in the chip U3, the TX end in the chip U4 is connected with the TX end in the chip U3, and the BC end in the chip U4 is connected with the BC end in the chip U3.

[0019] Preferably, the battery J1 is a lithium ion battery, and the model of the lithium ion battery is 18650.

[0020] The model of the field effect tube Q1 is SI2301.

[0021] The model of the field effect tube Q2 is SI2302.

[0022] The model of the field effect tube Q3 is SI2302.

[0023] The model of the boost chip U1 is TPS61222.

[0024] The model of the current limiting chip U2 is TP2553.

[0025] The chip U3 is a microcontroller chip with the model of STM32F103.

[0026] The chip U5 is a six-axis sensor chip with the model of LSM303DLH.

[0027] The chip U4 is a wireless communication chip with the model of BM-4044.

[0028] Compared with the prior art, the device has the following beneficial technical effects:

[0029] (I) The device is based on a six-axis sensor, has good measurement accuracy, is small in size and high in integration, is convenient for correcting errors, and can provide high-precision angle measurement information; when the inclination angle is-90°~+90°, the error of the device is ±0.2°; and when the azimuth angle is 0~360°, the error of the device is ±0.36°.

[0030] (II) The device in this utility model controls the other chips through a high-performance, small-size and low-power microcontroller, uses a Bluetooth module with high stability and high compatibility as the basis for wireless communication, and uses a new high-precision six-axis sensor as the basis for angle acquisition. Under the premise of ensuring accuracy, the overall circuit can work stably in a low-power state, thus extending the battery life. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the measuring section device of this utility model.

[0032] Figure 2 This is a schematic diagram of the battery switch circuit of this utility model.

[0033] Figure 3 This is a schematic diagram of the power supply circuit of this utility model.

[0034] Figure 4 This is a schematic diagram of the circuit structure of the system control circuit of this utility model.

[0035] Figure 5 This is a schematic diagram of the angle acquisition circuit of this utility model.

[0036] Figure 6 This is a schematic diagram of the wireless communication circuit of this utility model.

[0037] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, all devices and components in this utility model are based on existing technologies. For example, the six-axis sensor with model number LSM303DLH is a known six-axis sensor with model number LSM303DLH.

[0039] In this invention, the voltage input terminal of the power supply circuit is Figure 2 Vi in the circuit is also the voltage input terminal of the power supply circuit. Figure 3 Vi in the text.

[0040] In this invention, the voltage input terminal of the system control circuit is Figure 3 The voltage V in the code is also the voltage input terminal of the system control circuit. Figure 4 V in the text.

[0041] In this invention, the voltage input terminal of the angle acquisition circuit is Figure 3 The voltage V in the figure is also the voltage input terminal of the angle acquisition circuit. Figure 5 V in the text.

[0042] The utility model discloses a wireless communication circuit's voltage input end is Figure 3 V in the middle, and the voltage input end of wireless communication circuit is also Figure 6 V in the middle.

[0043] Follow the above technical scheme, the following gives the specific embodiment of the utility model, need explain that the utility model is not limited to the following specific embodiment, all equivalent transformation on the basis of the application technical scheme falls into the protection scope of the utility model.

[0044] Embodiment:

[0045] This embodiment gives a kind of high-precision measuring short device, as shown in Figure 1 It includes battery switch circuit, battery switch circuit is connected with power supply circuit and is powered, power supply circuit is also connected with system control circuit, angle acquisition circuit and wireless communication circuit and is powered.

[0046] System control circuit is connected with angle acquisition circuit.

[0047] System control circuit is also connected with wireless communication circuit.

[0048] Specifically, as shown in Figure 2 Battery switch circuit includes battery J1, the negative pole of battery J1 is grounded, the positive pole of battery J1 is connected with the one end of resistance R4 in battery switch circuit, the other end of resistance R4 in battery switch circuit is connected with the gate of field effect transistor Q1, the source of field effect transistor Q1 is connected with the positive pole of battery J1.

[0049] Battery switch circuit also includes:

[0050] The positive pole of battery J1 is connected with the one end of resistance R1 in battery switch circuit, the other end of resistance R1 in battery switch circuit is connected with the one end of resistance R2 in battery switch circuit, the other end of resistance R2 in battery switch circuit is connected with the one end of resistance R3 in battery switch circuit, the other end of resistance R3 in battery switch circuit is grounded.

[0051] The other end of resistance R1 in battery switch circuit is also connected with the gate of field effect transistor Q2, the drain of field effect transistor Q2 is connected with the other end of resistance R4 in battery switch circuit, the source of field effect transistor Q2 is grounded.

[0052] The other end of resistance R1 in battery switch circuit is also connected with the drain of field effect transistor Q3, the source of field effect transistor Q3 is grounded, the gate of field effect transistor Q3 is connected with the one end of resistance R5 in battery switch circuit, the other end of resistance R5 in battery switch circuit is connected with the other end of resistance R4 in battery switch circuit.

[0053] The other end of the resistor R2 in the battery switch circuit is also connected to one end of a capacitor C1 in the battery switch circuit, and the other end of the capacitor C1 in the battery switch circuit is grounded.

[0054] The other end of the resistor R2 in the battery switch circuit is also connected to one end of a switch, and the other end of the switch is connected to one end of a resistor R5 in the battery switch circuit.

[0055] In this embodiment, the battery J1 is a lithium ion battery, and the model of the lithium ion battery is 18650.

[0056] In this embodiment, the model of the field effect transistor Q1 is SI2301.

[0057] In this embodiment, the model of the field effect transistor Q2 is SI2302.

[0058] In this embodiment, the model of the field effect transistor Q3 is SI2302.

[0059] In this embodiment, the size of the battery J1 is 3.2V, the size of the resistor R1 in the battery switch circuit and the size of the resistor R4 in the battery switch circuit are both 200k, the size of the resistor R2 in the battery switch circuit and the size of the resistor R5 in the battery switch circuit are both 100k, the size of the resistor R3 in the battery switch circuit is 4.7M, and the size of the capacitor C1 in the battery switch circuit is 0.1UF.

[0060] The battery switch circuit of this embodiment uses an N-channel field effect transistor as a starting IC device for controlling the overall circuit. Since the field effect transistor has no base current, the static power consumption is very low, which is very suitable for circuits that use a battery as a power supply, achieving the purpose of energy saving.

[0061] Specifically, as shown in Figure 3 The power supply circuit includes a boost chip U1, and the VOUT port of the boost chip U1 is connected to one end of an inductor L1 in the power supply circuit.

[0062] The power supply circuit further includes:

[0063] The GND port of the boost chip U1 is grounded.

[0064] The VOUT port of the boost chip U1 is connected to one end of a resistor R3 in the power supply circuit, and the other end of the resistor R3 in the power supply circuit is connected to the FB port of the boost chip U1.

[0065] The FB port of the boost chip U1 is also connected with one end of the resistor R1 in the power supply circuit, the other end of the resistor R1 in the power supply circuit is connected with one end of the resistor R2 in the power supply circuit, and the other end of the resistor R2 in the power supply circuit is grounded.

[0066] The VOUT port of the boost chip U1 is also connected with one end of the capacitor C2 in the power supply circuit, and the other end of the capacitor C2 in the power supply circuit is grounded.

[0067] The VOUT port of the boost chip U1 is also connected with one end of the capacitor C3 in the power supply circuit, and the other end of the capacitor C3 in the power supply circuit is grounded.

[0068] The other end of the inductor L1 in the power supply circuit is also connected with one end of the capacitor C4 in the power supply circuit, and the other end of the capacitor C4 in the power supply circuit is grounded.

[0069] The other end of the inductor L1 in the power supply circuit is also connected with one end of the resistor R4 in the power supply circuit, the other end of the resistor R4 in the power supply circuit is connected with one end of the capacitor C5 in the power supply circuit, and the other end of the capacitor C5 in the power supply circuit is grounded.

[0070] The other end of the inductor L1 in the power supply circuit is also connected with one end of the capacitor C6 in the power supply circuit, and the other end of the capacitor C6 in the power supply circuit is grounded.

[0071] The other end of the resistor R4 in the power supply circuit is also connected with the EN port of the current limiting chip U2.

[0072] The other end of the resistor R4 in the power supply circuit is also connected with the / FAULT port of the current limiting chip U2.

[0073] The GND port of the current limiting chip U2 is grounded.

[0074] The ILIM port of the current limiting chip U2 is connected with one end of the R15 in the power supply circuit, and the other end of the R15 in the power supply circuit is grounded.

[0075] The OUT port of the current limiting chip U2 is connected with one end of the capacitor C7 in the power supply circuit, and the other end of the capacitor C7 in the power supply circuit is grounded.

[0076] The OUT port of the current limiting chip U2 is connected with one end of the capacitor C8 in the power supply circuit, and the other end of the capacitor C8 in the power supply circuit is grounded.

[0077] In the embodiment, the model of the boost chip U1 is TPS61222.

[0078] In the embodiment, the model of the current limiting chip U2 is TP2553.

[0079] In the embodiment, the resistance R1 in the power supply circuit is 10K; the resistance R2 in the power supply circuit is 140M; the resistance R3 in the power supply circuit is 10M; the resistance R4 in the power supply circuit is 10K; the resistance R15 in the power supply circuit is 62K, and the inductance L1 in the power supply circuit is 4.7UH.

[0080] In the embodiment, the capacitance C2 in the power supply circuit is 0.1uF; the capacitance C3 in the power supply circuit is 10uF; the capacitance C4 in the power supply circuit is 10uF; the capacitance C5 in the power supply circuit is 0.1uF; the capacitance C6 in the power supply circuit is 0.1uF; the capacitance C7 in the power supply circuit is 10uF; and the capacitance C8 in the power supply circuit is 0.1uF.

[0081] Specifically, as shown in Figure 4 The system control circuit includes the chip U3.

[0082] The system control circuit further includes:

[0083] One end of the crystal oscillator X1 is connected to the OSC-IN port of the chip U3, and the other end of the crystal oscillator X1 is connected to the OSC-OUT port of the chip U3.

[0084] One end of the crystal oscillator X1 is also connected to one end of the capacitance C2 in the system control circuit, and the other end of the capacitance C2 in the system control circuit is grounded.

[0085] The other end of the crystal oscillator X1 is also connected to one end of the capacitance C1 in the system control circuit, and the other end of the capacitance C1 in the system control circuit is grounded.

[0086] The VDDA port of the chip U3 is connected to one end of the capacitance C3 in the system control circuit, and the other end of the capacitance C3 in the system control circuit is grounded.

[0087] The PB2 (BOOT1) port of the chip U3 is connected to one end of the resistance R1 in the system control circuit, and the other end of the resistance R1 in the system control circuit is grounded.

[0088] The VSS-1 port of the chip U3 is grounded.

[0089] The VSS-2 port of the chip U3 is grounded.

[0090] The VSS-3 port of the chip U3 is grounded.

[0091] The BOOT0 port of the chip U3 is grounded.

[0092] In the embodiment, the chip U3 is a microcontroller chip with the model STM32F103.

[0093] In the embodiment, the size of the capacitor C1 in the system control circuit is 20pF; the size of the capacitor C2 in the system control circuit is 20pF; the size of the capacitor C3 in the system control circuit is 0.1uF; the size of the crystal oscillator X1 in the system control circuit is 8MHZ; and the size of the resistor R1 in the system control circuit is 10K.

[0094] Specifically, as shown in Figure 5 The angle acquisition circuit includes the chip U5.

[0095] The angle acquisition circuit further includes:

[0096] The C1 port of the chip U5 is connected with one end of the capacitor C1 in the angle acquisition circuit, and the other end of the capacitor C1 in the angle acquisition circuit is grounded.

[0097] The GND port and the two RES ports of the chip U5 are grounded.

[0098] The SETC port of the chip U5 is connected with one end of the capacitor C2 in the angle acquisition circuit, and the other end of the capacitor C2 in the angle acquisition circuit is connected with the SETP port of the chip U5.

[0099] The VDD port of the chip U5 is connected with one end of the capacitor C3 in the angle acquisition circuit, and the other end of the capacitor C3 in the angle acquisition circuit is grounded.

[0100] In the embodiment, the chip U5 is a six-axis sensor chip with the model of LSM303DLH.

[0101] In the embodiment, the size of the capacitor C1 in the angle acquisition circuit is 4.7uF; the size of the capacitor C2 in the angle acquisition circuit is 0.22uF; and the size of the capacitor C3 in the angle acquisition circuit is 10uF.

[0102] Specifically, as shown in Figure 6 The wireless communication circuit includes the chip U4.

[0103] The wireless communication circuit further includes:

[0104] The GND port of the chip U4 is grounded.

[0105] In the embodiment, the chip U4 is a wireless communication chip with the model of BM-4044.

[0106] Further, as shown in Figures 2 to 6 In the battery switch circuit, the drain of the field effect transistor Q1 is connected with the voltage input end of the power supply circuit.

[0107] Further, as shown in Figures 2 to 6As shown in the figure, in the power supply circuit, the VIN port of the boost chip U1, the L port of the boost chip U1, the EN port of the boost chip U1, and one end of the capacitor C1 in the power supply circuit are all connected with the voltage input end of the power supply circuit, and the other end of the capacitor C1 in the power supply circuit is grounded; the OUT port of the current limiting chip U2 is connected with the voltage input end of the system control circuit, the voltage input end of the angle acquisition circuit, and the voltage input end of the wireless communication circuit.

[0108] In this embodiment, the size of the capacitor C1 in the power supply circuit is 10uF.

[0109] Further, as shown in the figure, Figures 2 to 6 In the system control circuit, the VBAT port of the chip U3 is connected with the voltage input end of the system control circuit, the VDD-1 port of the chip U3 is connected with the voltage input end of the system control circuit, the VDD-2 port of the chip U3 is connected with the voltage input end of the system control circuit, and the VDD-3 port of the chip U3 is connected with the voltage input end of the system control circuit.

[0110] Further, as shown in the figure, Figures 2 to 6 In the angle acquisition circuit, the VDD_IO port of the chip U5 is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the resistor R1 in the angle acquisition circuit, the other end of the resistor R1 in the angle acquisition circuit is connected with the SCL port of the chip U5, the SDA port of the chip U5 is connected with one end of the resistor R2 in the angle acquisition circuit, the other end of the resistor R2 in the angle acquisition circuit is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the capacitor C4 in the angle acquisition circuit, and the other end of the capacitor C4 in the angle acquisition circuit is grounded; the SCL end in the chip U5 is connected with the SCL end in the chip U3, the SDA end in the chip U5 is connected with the SDA end in the chip U3, the CS_A end in the chip U5 is connected with the CS_A end in the chip U3, the CS_M end in the chip U5 is connected with the CS_M end in the chip U3, and the DRDY end in the chip U5 is connected with the DRDY end in the chip U3.

[0111] In this embodiment, the size of the resistor R1 in the angle acquisition circuit is 10K; the size of the resistor R2 in the angle acquisition circuit is 10K; and the size of the capacitor C4 in the angle acquisition circuit is 0.1uF.

[0112] Further, as shown in the figure, Figures 2 to 6As shown, in the wireless communication circuit, the VDD port of the chip U4 is connected with the voltage input end of the wireless communication circuit, the voltage input end of the wireless communication circuit is also connected with one end of the capacitor C1 in the wireless communication circuit, the other end of the capacitor C1 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of the capacitor C2 in the wireless communication circuit, the other end of the capacitor C2 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of the resistor R17 in the wireless communication circuit, the other end of the resistor R17 in the wireless communication circuit is connected with the RES port of the chip U4, the other end of the resistor R17 in the wireless communication circuit is also connected with one end of the capacitor C22 in the wireless communication circuit, the other end of the capacitor C22 in the wireless communication circuit is grounded; the RX end in the chip U4 is connected with the RX end in the chip U3, the TX end in the chip U4 is connected with the TX end in the chip U3, and the BC end in the chip U4 is connected with the BC end in the chip U3.

[0113] In the embodiment, the size of the capacitor C1 in the wireless communication circuit is 0.1uF; the size of the capacitor C2 in the wireless communication circuit is 0.1uF; the size of the capacitor C22 in the wireless communication circuit is 2.2uF; and the size of the resistor R17 in the wireless communication circuit is 10K.

[0114] In the device, the voltage in the battery switch circuit enters the voltage input end of the power supply circuit, the power supply circuit is connected with the system control circuit, the angle acquisition circuit and the wireless communication circuit for power supply; the system control circuit is also connected with the angle acquisition circuit and the wireless communication circuit, and the system control circuit sends the signal collected from the angle acquisition circuit to the data terminal through the wireless communication circuit.

Claims

1. A high-precision measuring segment device, characterized in that, The battery switch circuit is connected with the power supply circuit for power supply, and the power supply circuit is also connected with the system control circuit, the angle acquisition circuit and the wireless communication circuit for power supply respectively; The system control circuit is connected with the angle acquisition circuit; The system control circuit is also connected with the wireless communication circuit.

2. The high-precision gauge sub according to claim 1, wherein The battery switch circuit includes a battery J1, the negative electrode of the battery J1 is grounded, the positive electrode of the battery J1 is connected with one end of a resistor R4 in the battery switch circuit, the other end of the resistor R4 in the battery switch circuit is connected with the gate of a field effect transistor Q1, and the source of the field effect transistor Q1 is connected with the positive electrode of the battery J1; The power supply circuit includes a boost chip U1, the VOUT port of the boost chip U1 is connected with one end of an inductor L1 in the power supply circuit, and the other end of the inductor L1 in the power supply circuit is connected with the IN port of a current limiting chip U2; The system control circuit includes a chip U3; The angle acquisition circuit includes a chip U5; The wireless communication circuit includes a chip U4.

3. The high-precision gauge sub according to claim 2, wherein The drain of the field effect transistor Q1 in the battery switch circuit is connected with the voltage input end of the power supply circuit; The VIN port of the boost chip U1, the L port of the boost chip U1, the EN port of the boost chip U1 and one end of a capacitor C1 in the power supply circuit are all connected with the voltage input end of the power supply circuit, and the other end of the capacitor C1 in the power supply circuit is grounded; the OUT port of the current limiting chip U2 in the power supply circuit is connected with the voltage input end of the system control circuit, the voltage input end of the angle acquisition circuit and the voltage input end of the wireless communication circuit; The VBAT port of the chip U3 in the system control circuit is connected with the voltage input end of the system control circuit, the VDD-1 port of the chip U3 is connected with the voltage input end of the system control circuit, the VDD-2 port of the chip U3 is connected with the voltage input end of the system control circuit, and the VDD-3 port of the chip U3 is connected with the voltage input end of the system control circuit. The VDD_IO port of the chip U5 in the angle acquisition circuit is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the resistor R1 in the angle acquisition circuit, the other end of the resistor R1 in the angle acquisition circuit is connected with the SCL port of the chip U5, the SDA port of the chip U5 is connected with one end of the resistor R2 in the angle acquisition circuit, the other end of the resistor R2 in the angle acquisition circuit is connected with the voltage input end of the angle acquisition circuit, the voltage input end of the angle acquisition circuit is also connected with one end of the capacitor C4 in the angle acquisition circuit, and the other end of the capacitor C4 in the angle acquisition circuit is grounded; the SCL end in the chip U5 is connected with the SCL end in the chip U3, the SDA end in the chip U5 is connected with the SDA end in the chip U3, the CS_A end in the chip U5 is connected with the CS_A end in the chip U3, the CS_M end in the chip U5 is connected with the CS_M end in the chip U3, and the DRDY end in the chip U5 is connected with the DRDY end in the chip U3; The VDD port of the chip U4 in the wireless communication circuit is connected with the voltage input end of the wireless communication circuit, the voltage input end of the wireless communication circuit is also connected with one end of the capacitor C1 in the wireless communication circuit, the other end of the capacitor C1 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of the capacitor C2 in the wireless communication circuit, the other end of the capacitor C2 in the wireless communication circuit is grounded, the voltage input end of the wireless communication circuit is also connected with one end of the resistor R17 in the wireless communication circuit, the other end of the resistor R17 in the wireless communication circuit is connected with the RES port of the chip U4, the other end of the resistor R17 in the wireless communication circuit is also connected with one end of the capacitor C22 in the wireless communication circuit, and the other end of the capacitor C22 in the wireless communication circuit is grounded; the RX end in the chip U4 is connected with the RX end in the chip U3, the TX end in the chip U4 is connected with the TX end in the chip U3, and the BC end in the chip U4 is connected with the BC end in the chip U3.

4. The high-precision gauge sub according to claim 2, wherein The battery J1 is a lithium ion battery, and the model of the lithium ion battery is 18650; The model of the field effect tube Q1 is SI2301; The model of the field effect tube Q2 is SI2302; The model of the field effect tube Q3 is SI2302; The model of the boost chip U1 is TPS61222; The model of the current limiting chip U2 is TP2553; The chip U3 is a microcontroller chip with the model of STM32F103; The chip U5 is a six-axis sensor chip with the model of LSM303DLH; The chip U4 is a wireless communication chip with the model of BM-4044.

5. The high-precision gauge sub according to claim 2, wherein, The battery switch circuit further comprises: An anode of the battery J1 is connected with one end of a resistor R1 in a battery switch circuit, the other end of the resistor R1 in the battery switch circuit is connected with one end of a resistor R2 in the battery switch circuit, the other end of the resistor R2 in the battery switch circuit is connected with one end of a resistor R3 in the battery switch circuit, and the other end of the resistor R3 in the battery switch circuit is grounded; The other end of the resistor R1 in the battery switch circuit is also connected with a gate of a field effect transistor Q2, the drain of the field effect transistor Q2 is connected with the other end of a resistor R4 in the battery switch circuit, and the source of the field effect transistor Q2 is grounded; The other end of the resistor R1 in the battery switch circuit is also connected with the drain of a field effect transistor Q3, the source of the field effect transistor Q3 is grounded, one end of a resistor R5 in the battery switch circuit is connected with the gate of the field effect transistor Q3, and the other end of the resistor R5 in the battery switch circuit is connected with the other end of the resistor R4 in the battery switch circuit; The other end of the resistor R2 in the battery switch circuit is also connected with one end of a capacitor C1 in the battery switch circuit, and the other end of the capacitor C1 in the battery switch circuit is grounded; The other end of the resistor R2 in the battery switch circuit is also connected with one end of a switch, and the other end of the switch is connected with one end of the resistor R5 in the battery switch circuit.

6. The high precision gauge sub according to claim 2, wherein, The power supply circuit further comprises: A GND port of the boost chip U1 is grounded; One end of a resistor R3 in the power supply circuit is connected with a VOUT port of the boost chip U1, and the other end of the resistor R3 in the power supply circuit is connected with an FB port of the boost chip U1; The FB port of the boost chip U1 is also connected with one end of a resistor R1 in the power supply circuit, the other end of the resistor R1 in the power supply circuit is connected with one end of a resistor R2 in the power supply circuit, and the other end of the resistor R2 in the power supply circuit is grounded; The VOUT port of the boost chip U1 is also connected with one end of a capacitor C2 in the power supply circuit, and the other end of the capacitor C2 in the power supply circuit is grounded; The VOUT port of the boost chip U1 is also connected with one end of a capacitor C3 in the power supply circuit, and the other end of the capacitor C3 in the power supply circuit is grounded; The other end of an inductor L1 in the power supply circuit is also connected with one end of a capacitor C4 in the power supply circuit, and the other end of the capacitor C4 in the power supply circuit is grounded; The other end of the inductor L1 in the power supply circuit is also connected with one end of a resistor R4 in the power supply circuit, the other end of the resistor R4 in the power supply circuit is connected with one end of a capacitor C5 in the power supply circuit, and the other end of the capacitor C5 in the power supply circuit is grounded; The other end of the inductor L1 in the power supply circuit is also connected with one end of a capacitor C6 in the power supply circuit, and the other end of the capacitor C6 in the power supply circuit is grounded; The other end of the resistor R4 in the power supply circuit is also connected with an EN port of a current limiting chip U2; The other end of the resistor R4 in the power supply circuit is also connected with a / FAULT port of the current limiting chip U2; A GND port of the current limiting chip U2 is grounded; The ILIM port of the current limiting chip U2 is connected with one end of R15 in the power supply circuit, and the other end of R15 in the power supply circuit is grounded; The OUT port of the current limiting chip U2 is connected with one end of C7 in the power supply circuit, and the other end of C7 in the power supply circuit is grounded; The OUT port of the current limiting chip U2 is connected with one end of C8 in the power supply circuit, and the other end of C8 in the power supply circuit is grounded.

7. The high precision gauge sub according to claim 2, wherein, The system control circuit further comprises: The OSC-IN port of the chip U3 is connected with one end of the crystal oscillator X1, and the other end of the crystal oscillator X1 is connected with the OSC-OUT port of the chip U3; One end of the crystal oscillator X1 is further connected with one end of C2 in the system control circuit, and the other end of C2 in the system control circuit is grounded; The other end of the crystal oscillator X1 is further connected with one end of C1 in the system control circuit, and the other end of C1 in the system control circuit is grounded; The VDDA port of the chip U3 is connected with one end of C3 in the system control circuit, and the other end of C3 in the system control circuit is grounded; The PB2 (BOOT1) port of the chip U3 is connected with one end of R1 in the system control circuit, and the other end of R1 in the system control circuit is grounded; The VSS-1 port of the chip U3 is grounded; The VSS-2 port of the chip U3 is grounded; The VSS-3 port of the chip U3 is grounded; The BOOT0 port of the chip U3 is grounded.

8. The high-precision gauge sub according to claim 2, wherein, The angle acquisition circuit further comprises: The C1 port of the chip U5 is connected with one end of C1 in the angle acquisition circuit, and the other end of C1 in the angle acquisition circuit is grounded; The GND port and the two RES ports of the chip U5 are grounded; The SETC port of the chip U5 is connected with one end of C2 in the angle acquisition circuit, and the other end of C2 in the angle acquisition circuit is connected with the SETP port of the chip U5; The VDD port of the chip U5 is connected with one end of C3 in the angle acquisition circuit, and the other end of C3 in the angle acquisition circuit is grounded.

9. The high precision gauge sub according to claim 2, wherein, The wireless communication circuit further comprises: The GND port of the chip U4 is grounded.

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