A drill bit engineering parameter measurement system

Abstract

The drilling bit engineering parameter measurement system comprises a control circuit, a battery and a plurality of measurement circuit modules installed on the drilling bit; the drilling bit is composed of a drilling bit body and a drilling bit short section; the front end of the drilling bit body is provided with a plurality of measurement circuit module installation grooves for installing the measurement circuit modules; the outer wall of the drilling bit short section is provided with a control circuit installation groove for placing the control circuit and a battery installation groove for placing the battery; the measurement circuit module is a wireless communication node, the control circuit is a wireless communication base station, and the measurement circuit module and the control circuit constitute a drilling bit engineering parameter measurement circuit network. A plurality of measurement circuit modules are arranged at the front end of the drilling bit to constitute a measurement circuit network, record drilling bit information in all directions, predict risks such as drilling bit fracture and roller drop, and prevent complex downhole accidents in time.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and in particular to a drill bit engineering parameter measurement system. Background Technology

[0002] As oil and gas exploration and development deepen, the geological structures drilled become increasingly complex, characterized by ultra-deep formations, ultra-high temperatures, and ultra-high pressures. This leads to increased wear on drill bits during rock breaking, frequently resulting in stuck drill bits, broken cones, and drill string breakage. These accidents are closely related to drill bit engineering parameters. Obtaining these parameters allows for analysis of vibration, torsion, and tension during drilling, enabling effective measures to improve drilling processes and prevent complex downhole accidents. Furthermore, optimizing drill bit structures based on downhole conditions can reduce drilling risks and accident rates. Summary of the Invention

[0003] This disclosure provides a drill bit engineering parameter measurement system to improve the problem of frequent drilling accidents caused by the lack of real-time acquisition and accurate analysis of drill bit engineering parameters in the current oil and gas exploration and development process in complex formations.

[0004] This disclosure provides a drill bit engineering parameter measurement system, including a control circuit, a battery, and multiple measurement circuit modules installed on the drill bit;

[0005] The drill bit consists of a drill bit body and a drill bit section; the front end of the drill bit body is provided with multiple measurement circuit module mounting slots for mounting measurement circuit modules, and the outer wall of the drill bit section is provided with a control circuit mounting slot for placing the control circuit and a battery mounting slot for placing the battery; the measurement circuit module is a wireless communication node, the control circuit is a wireless communication base station, and the measurement circuit module and the control circuit constitute a drill bit engineering parameter measurement circuit network.

[0006] In one possible design, the control circuit includes: a memory connected to the central processing unit, a first wireless communication module, and a single-bus communication module; the single-bus communication module is connected to the MWD instrument.

[0007] The memory is used to store the drill bit engineering parameters under the control of the central processing unit;

[0008] The first wireless communication module is used to realize data interaction between the central processing unit and the measurement circuit module;

[0009] The single-bus communication module is used to realize data interaction between the central processing unit and the MWD instrument.

[0010] In one possible design, the measurement circuit module includes: a strain gauge circuit, a second wireless communication module connected to the strain gauge circuit, and a micro battery; the control circuit and the measurement circuit module are interconnected through the first wireless communication module and the second wireless communication module, respectively, to perform command transmission and data upload operations.

[0011] In one possible design, the strain gauge circuit consists of a bridge circuit, a conditioning and amplification circuit, all connected to a DC / DC module, and a microcontroller directly connected to a micro battery.

[0012] The bridge circuit is used to acquire the resistance change signal of the drill bit due to deformation under the control of the microcontroller.

[0013] The conditioning and amplification circuit is connected to the bridge circuit and is used to amplify and adjust the resistance change signal under the control of the microcontroller.

[0014] The DC / DC module is used to provide a stable power supply to the bridge, the conditioning circuit and the microcontroller through the micro battery.

[0015] In one possible design, the bridge consists of strain gauges R forming a closed circuit. g Resistance R x1 Resistance R x2 and resistance R x3 Composition, and the strain gauge R g It is attached to the body of the drill bit.

[0016] In one possible design, the conditioning and amplification circuit comprises resistors R1, R2, R3, and R... f And the amplifier U1 constitutes;

[0017] One end of resistor R2 is connected to the first output terminal of the bridge, and the other end of resistor R2 is connected to resistor R3 and the positive input terminal of amplifier U1.

[0018] One end of resistor R1 is connected to the second output terminal of the bridge circuit, and the other end of resistor R1 is connected to resistor R f and the inverting input terminal of the amplifier U1; the resistor R f The other end is connected to the microcontroller.

[0019] In one possible design, the strain gauge circuit is cylindrical in shape.

[0020] In one possible design, the strain gauge circuit has dimensions of φ10mm × 10mm.

[0021] In one possible design, the battery capacity is 29Ah.

[0022] In one possible design, the first wireless communication module and the second wireless communication module are electromagnetic wave communication modules.

[0023] As can be seen from the above technical solutions, this disclosure has the following advantages:

[0024] This disclosure provides a drill bit engineering parameter measurement system for collecting drill bit engineering parameters and achieving comprehensive recording of drill bit information. The system includes: a control circuit, a battery, and multiple measurement circuit modules installed on the drill bit; the drill bit consists of a drill bit body and a drill bit sub; the front end of the drill bit body has multiple measurement circuit module mounting slots for mounting the measurement circuit modules, and the outer wall of the drill bit sub has a control circuit mounting slot for placing the control circuit and a battery mounting slot for placing the battery; the measurement circuit modules are wireless communication nodes, the control circuit is a wireless communication base station, and the measurement circuit modules and the control circuit constitute a drill bit engineering parameter measurement circuit network. By deploying multiple measurement circuit modules at the very front end of the drill bit to form a measurement circuit network, comprehensive recording of drill bit information can be achieved, enabling the prediction of risks such as drill bit breakage and roller cone drop, and timely prevention of complex downhole accidents. It has promising applications in evaluating the rock-breaking effect of PDC drill bits and roller cone drill bits, analyzing drill bit structural strength, and analyzing drill bit service life. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 An exemplary schematic diagram of a diamond structure provided in Embodiment 1 of this disclosure is shown;

[0027] Figure 2 An exemplary block diagram of the control circuit provided in Embodiment 2 of this disclosure is shown;

[0028] Figure 3 An exemplary block diagram of the measurement circuit module provided in Embodiment 3 of this disclosure is shown;

[0029] Figure 4 The present disclosure provides an exemplary workflow for measuring drill bit engineering parameters according to Embodiment 4. Detailed Implementation

[0030] This disclosure provides a drill bit engineering parameter measurement system to improve the problem of frequent drilling accidents caused by the lack of real-time acquisition and accurate analysis of drill bit engineering parameters in the current oil and gas exploration and development process in complex formations.

[0031] To make the inventive objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0032] Example 1

[0033] This application provides a drill bit engineering parameter measurement system, including a system installed on such a drill bit. Figure 1 The drill bit shown includes a control circuit 108, a battery 109, and multiple measurement circuit modules.

[0034] The drill bit consists of a drill bit body 101 and a drill bit section 102. The front end of the drill bit body 101 is provided with multiple measurement circuit module mounting slots 105 for mounting measurement circuit modules 110. The outer wall of the drill bit section 102 is provided with a control circuit mounting slot 103 for placing the control circuit 108 and a battery mounting slot 104 for placing the battery 109. The measurement circuit module is a wireless communication node, the control circuit 108 is a wireless communication base station, and the measurement circuit module and the control circuit 108 constitute a drill bit engineering parameter measurement circuit network.

[0035] In this embodiment of the invention, the front end of the drill bit body 101 is provided with a first measurement circuit module mounting slot 105 for mounting a first measurement circuit module 110, a second measurement circuit module mounting slot 106 for mounting a second measurement circuit module 111, and a third measurement circuit module mounting slot 107 for mounting a third measurement circuit module 112.

[0036] In this embodiment, the control circuit 108 communicates wirelessly with the first measurement circuit module 110, the second measurement circuit module 111, and the third measurement circuit module 112. The control circuit 108 is the master, and the first measurement circuit module 110, the second measurement circuit module 111, and the third measurement circuit module 112 are slaves, forming a drill bit engineering parameter measurement network.

[0037] In the specific implementation, the control circuit 108 is connected to the MWD instrument via a single-core cable 113 and performs data exchange.

[0038] It's important to note that a MWD (Measurement While Drilling) instrument, also known as a drilling measurement instrument, is a device used to acquire downhole measurement data in real time during oil and gas drilling. The main functions of an MWD instrument include real-time monitoring of drilling parameters, providing wellbore trajectory control information, and collecting geological and engineering data. MWD instruments are typically installed inside the drill string and travel downhole with the drill bit as drilling progresses. The MWD instrument uses sensors to collect drilling parameters and formation information in real time and transmits the data to the surface control system via a communication system within the drill pipe. The surface control system receives and processes this data, displaying and analyzing the drilling status in real time for use by drilling engineers in decision-making.

[0039] In one alternative embodiment, the battery 109 has a capacity of 29Ah, a temperature resistance of 150°C, and provides operating voltage and operating current for the control circuit 108.

[0040] The drill bit engineering parameter measurement system disclosed in Embodiment 1 above is used to collect drill bit engineering parameters and achieve comprehensive recording of drill bit information. The system includes a control circuit 108, a battery 109, and multiple measurement circuit modules installed on the drill bit. The drill bit consists of a drill bit body 101 and a drill bit sub 102. The front end of the drill bit body 101 has multiple measurement circuit module mounting slots for mounting the measurement circuit modules. The outer wall of the drill bit sub 102 has a control circuit mounting slot 103 for placing the control circuit 108 and a battery mounting slot 104 for placing the battery 109. The measurement circuit modules are wireless communication nodes, and the control circuit 108 is a wireless communication base station. The measurement circuit modules and the control circuit 108 constitute a drill bit engineering parameter measurement circuit network. By deploying multiple measurement circuit modules at the very front of the drill bit to form a measurement circuit network, comprehensive recording of drill bit information can be achieved, enabling the prediction of risks such as drill bit breakage and roller cone drop, and timely prevention of complex downhole accidents. It has good application prospects in evaluating the rock breaking effect of PDC drill bits and roller cone drill bits, analyzing the structural strength of drill bits, and analyzing the service life of drill bits.

[0041] Example 2

[0042] This application provides a drill bit engineering parameter measurement system, including a control circuit, a battery, and multiple measurement circuit modules installed on the drill bit;

[0043] The drill bit consists of a drill bit body and a drill bit section; the front end of the drill bit body is provided with multiple measurement circuit module mounting slots for mounting measurement circuit modules, and the outer wall of the drill bit section is provided with a control circuit mounting slot for placing the control circuit and a battery mounting slot for placing the battery; the measurement circuit module is a wireless communication node, the control circuit is a wireless communication base station, and the measurement circuit module and the control circuit constitute a drill bit engineering parameter measurement circuit network.

[0044] Please see Figure 2 , Figure 2 An exemplary block diagram of a control circuit provided in Embodiment 2 of this disclosure is shown. The control circuit includes: a memory 205 connected to a central processing unit 201, a first wireless communication module 202, and a single-bus communication module 203; the single-bus communication module 203 is connected to an MWD instrument 204.

[0045] The memory 205 is used to store the drill bit engineering parameters under the control of the central processing unit 201;

[0046] The first wireless communication module 202 is used to realize data interaction between the central processing unit 201 and the measurement circuit module;

[0047] The single-bus communication module 203 is used to realize data interaction between the central processing unit 201 and the MWD instrument 204.

[0048] In this embodiment, the control circuit sends start-up commands to the first, second, and third measurement circuit modules via the wireless communication module 202, receives measurement data from each node, and centrally stores the received data in the memory 205. The control circuit uploads data to the MWD instrument 204 via the single-bus communication module 203. Based on the data uploaded by the MWD instrument 204, the ground engineer monitors the drill bit's operating status. After drilling is completed, the data can be downloaded from the memory 205, allowing the ground engineer to perform a comprehensive analysis of the drill bit's operating status. Furthermore, in this embodiment, the first wireless communication module 202 is an electromagnetic wave communication module.

[0049] The drill bit engineering parameter measurement system disclosed in Embodiment 2 above has a control circuit that can download data from the memory 205 to help ground engineers conduct a comprehensive analysis of the drill bit's working status, provide detailed historical data support, and help optimize future drilling operations.

[0050] Example 3

[0051] This application provides a drill bit engineering parameter measurement system, including a control circuit, a battery, and three measurement circuit modules installed on the drill bit. The drill bit consists of a drill bit body and a drill bit section. The front end of the drill bit body is provided with a first measurement circuit module mounting slot for installing a first measurement circuit module, a second measurement circuit module mounting slot for installing a second measurement circuit module, and a third measurement circuit module mounting slot for installing a third measurement circuit module. The outer wall of the drill bit section is provided with a control circuit mounting slot for placing the control circuit and a battery mounting slot for placing the battery. The measurement circuit modules are wireless communication nodes, the control circuit is a wireless communication base station, and the measurement circuit modules and the control circuit constitute a drill bit engineering parameter measurement circuit network.

[0052] The control circuit includes: a memory connected to a central processing unit, a first wireless communication module, and a single-bus communication module; the single-bus communication module is connected to an MWD instrument; the memory is used to store the drill bit engineering parameters under the control of the central processing unit; the first wireless communication module is used to realize data interaction between the central processing unit and the measurement circuit module; the single-bus communication module is used to realize data interaction between the central processing unit and the MWD instrument.

[0053] Please see Figure 3 , Figure 3 An exemplary block diagram of a measurement circuit module provided in Embodiment 3 of this disclosure is shown. The measurement circuit module includes: a strain gauge circuit 300, a second wireless communication module 302 connected to the strain gauge circuit 300, and a micro battery 303.

[0054] The strain gauge circuit consists of a bridge circuit, a conditioning and amplification circuit, all connected to the DC / DC module 304, and a microcontroller 301 directly connected to the micro battery.

[0055] The bridge circuit is used to acquire the resistance change signal generated by the deformation of the drill bit under the control of the microcontroller 301.

[0056] The conditioning and amplification circuit is connected to the bridge circuit and is used to amplify and adjust the resistance change signal under the control of the microcontroller 301.

[0057] The DC / DC module 304 is used to provide a stable power supply to the bridge, the conditioning circuit and the microcontroller through the micro battery 303.

[0058] The bridge consists of strain gauges R that form a closed circuit. g Resistance R x1 Resistance R x2 and resistance R x3Composition, and the strain gauge R g It is attached to the body of the drill bit.

[0059] The conditioning and amplification circuit consists of resistor R1, resistor R2, resistor R3, and resistor R f This is combined with the amplifier U1; one end of resistor R2 is connected to the first output terminal of the bridge circuit, and the other end of resistor R2 is connected to resistor R3 and the positive input terminal of amplifier U1; one end of resistor R1 is connected to the second output terminal of the bridge circuit, and the other end of resistor R1 is connected to resistor R... f and the inverting input terminal of the amplifier U1; the resistor R f The other end is connected to the microcontroller.

[0060] In this embodiment, the drilling torque of the drill bit body is measured by a strain gauge circuit 300, and the data is transmitted via a wireless communication module 302. The strain gauge circuit 300 is cylindrical in shape, with dimensions of only φ10mm × 10mm and a power consumption of only 0.1mW. It can be mounted on the cutting teeth of the drill bit and is powered by a micro battery 303 for extended operation. The control circuit and the measurement circuit module are interconnected via the first wireless communication module and the second wireless communication module 302, respectively, to transmit commands and upload data. The second wireless communication module 302 is an electromagnetic wave communication module.

[0061] In its implementation, the microcontroller 301 incorporates a built-in 12-bit A / D converter module, capable of real-time voltage signal acquisition and control of peripheral circuitry. The bridge input voltage is U. i The output voltage is U0, and U0 = U 01 -U 02 Assume the flow passes through R. x1 and R x2 The current is i1, flowing through R g and R x3 If the current is i2, then:

[0062] U i =(R x1 +R x2 )i1;

[0063] U i =(R g +R x3 i2;

[0064] Therefore, we get:

[0065]

[0066] Considering the following conditions:

[0067] U o1 =i2R x3 ;

[0068] U o2 =i1R x2 ;

[0069] Then we have:

[0070]

[0071] From the above formula, it can be seen that the strain gauge R g A change in resistance will cause a change in the bridge output voltage U0. When R g =R + ΔR, R x1 =R x2 =R x3 =R, then from the above formula we can obtain:

[0072]

[0073] The above equation further illustrates that the change in the bridge output voltage U0 is only related to the strain gauge R. g The change in resistance ΔR is related to the voltage signal U0. After passing through the conditioning and amplification circuits, the voltage signal U0 is output as a sampleable signal, which is then acquired by the microcontroller 301.

[0074] In the above embodiment three, the conditioning circuit can accurately adjust and amplify the signal output by the bridge, adapt to different types of deformation signals, and improve the adaptability and flexibility of the system.

[0075] Example 4

[0076] Please see Figure 4 The figure exemplarily illustrates the drill bit engineering parameter measurement workflow provided in Embodiment 4 of this disclosure, applied to the drill bit engineering parameter measurement system as described in the above embodiments. The method includes:

[0077] Step S1: Before the drill bit is lowered to the bottom of the well, the control circuit and the first measurement circuit module, the second measurement circuit module and the third measurement circuit module operate with low power consumption.

[0078] Step S2: After the drill bit is lowered to the bottom of the well, the control circuit is activated at regular intervals. The control circuit switches from low-power operation mode to normal operation mode and sends instructions to the first measurement circuit module, the second measurement circuit module and the third measurement circuit module.

[0079] Step S3: After receiving the working command, the first measurement circuit module, the second measurement circuit module and the third measurement circuit module switch from the low power operation mode to the normal operation mode.

[0080] Step S4: The first measurement circuit module, the second measurement circuit module, and the third measurement circuit module are distributed at different positions of the drill bit to continuously collect drill bit pressure torque data.

[0081] Step S5: When the first measurement circuit module, the second measurement circuit module, and the third measurement circuit module receive the feedback data command, they send the measurement data to the control circuit.

[0082] Step S6: The control circuit receives data from the first measurement circuit module, the second measurement circuit module, and the third measurement circuit module, adds a time tag, and stores it in the memory.

[0083] Step S7: The control circuit sends the measured data to the MWD instrument via a single bus, and the MWD instrument transmits the drill bit engineering parameter measurement data to the ground in real time via mud pulses.

[0084] Step S8: Based on the data uploaded by the MWD instrument, the ground engineer monitors the working status of the drill bit; after the drill bit exits the well, the data is downloaded to the storage device, and the ground engineer conducts a comprehensive analysis of the working status of the drill bit.

[0085] The above-described embodiment 1 discloses a drill bit engineering parameter measurement workflow, which includes the following steps: Step S1: Before the drill bit is lowered into the well, the control circuit and the first, second, and third measurement circuit modules operate at low power. Step S2: After the drill bit is lowered into the well, the control circuit is periodically activated, switching from low-power operation mode to normal operation mode and sending commands to the first, second, and third measurement circuit modules. Step S3: Upon receiving the commands, the first, second, and third measurement circuit modules switch from low-power operation mode to normal operation mode. Step S4: The first, second, and third measurement circuit modules are positioned at different locations on the drill bit, continuously collecting drill bit pressure and torque data. Step S5: Upon receiving feedback data commands, the first, second, and third measurement circuit modules send measurement data to the control circuit. Step S6: The control circuit receives the data from the first, second, and third measurement circuit modules, timestamps it, and stores it in memory. Step S7: The control circuit sends the measured data to the MWD instrument via a single bus. The MWD instrument transmits the drill bit engineering parameter measurement data to the ground in real time via mud pulses. Step S8: Based on the data uploaded by the MWD instrument, the ground engineer monitors the drill bit's working status. After the drill bit exits the well, the data is downloaded to the storage device, and the ground engineer performs a comprehensive analysis of the drill bit's working status. By comprehensively recording drill bit information, the system's endurance can be improved by predicting risks such as drill bit breakage and roller cone drop. This method has promising applications in evaluating the rock-breaking effect of PDC drill bits and roller cone drill bits, analyzing drill bit structural strength, and analyzing drill bit lifespan.

[0086] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0087] In the several embodiments provided in this application, it should be understood that the methods, apparatuses, electronic devices, and storage media disclosed herein can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0088] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0089] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0090] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0091] The above-described embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A drill bit engineering parameter measurement system, characterized in that, Includes control circuitry installed on the drill bit, a battery, and multiple measurement circuit modules; The drill bit consists of a drill bit body and a drill bit section; the front end of the drill bit body is provided with multiple measurement circuit module mounting slots for mounting measurement circuit modules, and the outer wall of the drill bit section is provided with a control circuit mounting slot for placing the control circuit and a battery mounting slot for placing the battery; the measurement circuit module is a wireless communication node, the control circuit is a wireless communication base station, and the measurement circuit module and the control circuit constitute a drill bit engineering parameter measurement circuit network.

2. The drill bit engineering parameter measurement system according to claim 1, characterized in that, The control circuit includes: a memory connected to the central processing unit, a first wireless communication module, and a single-bus communication module; the single-bus communication module is connected to the MWD instrument. The memory is used to store the drill bit engineering parameters under the control of the central processing unit; The first wireless communication module is used to realize data interaction between the central processing unit and the measurement circuit module; The single-bus communication module is used to realize data interaction between the central processing unit and the MWD instrument.

3. The drill bit engineering parameter measurement system according to claim 1 or 2, characterized in that, The measurement circuit module includes: a strain gauge circuit, a second wireless communication module connected to the strain gauge circuit, and a micro battery; the control circuit and the measurement circuit module are interconnected through the first wireless communication module and the second wireless communication module, respectively, to perform command transmission and data upload operations.

4. The drill bit engineering parameter measurement system according to claim 3, characterized in that, The strain gauge circuit consists of a bridge circuit, a conditioning and amplification circuit, all connected to a DC / DC module, and a microcontroller directly connected to a micro battery. The bridge circuit is used to acquire the resistance change signal of the drill bit due to deformation under the control of the microcontroller. The conditioning and amplification circuit is connected to the bridge circuit and is used to amplify and adjust the resistance change signal under the control of the microcontroller. The DC / DC module is used to provide a stable power supply to the bridge, the conditioning circuit and the microcontroller through the micro battery.

5. The drill bit engineering parameter measurement system according to claim 4, characterized in that, The bridge consists of strain gauges R that form a closed circuit. g Resistance R x1 Resistance R x2 and resistance R x3 Composition, and the strain gauge R g It is attached to the body of the drill bit.

6. The drill bit engineering parameter measurement system according to claim 4, characterized in that, The conditioning and amplification circuit consists of resistor R1, resistor R2, resistor R3, and resistor R f And the amplifier U1 constitutes; One end of resistor R2 is connected to the first output terminal of the bridge, and the other end of resistor R2 is connected to resistor R3 and the positive input terminal of amplifier U1. One end of resistor R1 is connected to the second output terminal of the bridge circuit, and the other end of resistor R1 is connected to resistor R f and the inverting input terminal of the amplifier U1; the resistor R f The other end is connected to the microcontroller.

7. The drill bit engineering parameter measurement system according to claim 4, characterized in that, The strain gauge circuit is cylindrical in shape.

8. The drill bit engineering parameter measurement system according to claim 7, characterized in that, The strain gauge circuit has dimensions of φ10mm×10mm.

9. The drill bit engineering parameter measurement system according to claim 1, characterized in that, The battery has a capacity of 29Ah.

10. The drill bit engineering parameter measurement system according to claim 3, characterized in that, The first wireless communication module and the second wireless communication module are electromagnetic wave communication modules.

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