Drilling platform multi-sensor signal integrated transmission system

Abstract

The utility model relates to the technical field of petroleum drilling, and provides a drilling platform multi-sensor signal integrated transmission system. Comprising an analog signal processing module, a digital signal processing module, a microcontroller module and an RS485 conversion module, the input end of the analog signal processing module is used for being connected with the analog signal output end of a hanging load sensor and / or a force pressure sensor, and the output end of the analog signal processing module is connected with the analog signal input end of the microcontroller module. The digital signal processing module is used for being connected with the digital signal output end of a winch sensor, and the output end of the digital signal processing module is connected with the digital signal input end of the microcontroller module. The output end of the microcontroller module is connected with the input end of the RS485 conversion module, and the output end of the RS485 conversion module is used for being connected with a ground system. Various engineering parameters can be integrated and transmitted during construction of an oil drilling platform, so that the engineering construction difficulty is greatly reduced, the data acquisition process is simplified, the transmission anti-interference capability is enhanced, and the data transmission precision is improved.

Description

Technical Field

[0001] This invention relates to the field of oil drilling technology, and more specifically to a multi-sensor signal integrated transmission system for drilling platforms. Background Technology

[0002] In the daily operation of oil drilling platforms, the accurate acquisition, processing, and transmission of multi-sensor signals are crucial to ensuring the safe and efficient conduct of drilling operations. Traditionally, various sensors on oil drilling platforms, such as temperature sensors, pressure sensors, and flow sensors, collect information on different physical quantities during the drilling process and transmit the data to the central control system through their respective signal transmission lines. However, this traditional split-line signal transmission method has many drawbacks.

[0003] On the one hand, the split-wire signal transmission method leads to complex system wiring, which not only increases the difficulty of engineering construction but also raises the possibility of wiring errors, thereby affecting the overall reliability and maintainability of the system. On the other hand, due to the complex and variable marine environment in which drilling platforms operate, there are numerous sources of electromagnetic interference, such as lightning, waves, and drilling equipment. These interference sources pose a serious threat to the stable transmission of sensor signals. Although the traditional 4-20mA current signal transmission method has a certain degree of anti-interference capability, its anti-interference performance is still limited in long-distance transmission and complex electromagnetic environments, making it difficult to guarantee the accuracy and reliability of data transmission.

[0004] Patent application CN110578513A discloses a data acquisition device for an oil drilling rig. The data acquisition module includes three analog signals and two pulse signals. The command transmission control board sends control signals to the data acquisition board via RS485. This device uses an FPGA+ARM architecture to realize data acquisition and control, which has high hardware requirements.

[0005] Patent application CN 221973500 U discloses a directional probe test circuit, which describes a signal conversion module for converting the pulse signal emitted by the directional probe into a current analog signal and connecting it to a ground system for decoding. However, it does not describe a circuit that can ensure the accuracy and reliability of data transmission.

[0006] Therefore, with the continuous development of oil drilling technology, the requirements for the real-time, accuracy, and comprehensiveness of various physical quantities during the drilling process are becoming increasingly stringent. Traditional wired signal transmission methods are no longer sufficient to meet these requirements and cannot provide comprehensive and reliable data support for drilling operations. A data transmission system with stronger anti-interference capabilities is needed. Utility Model Content

[0007] In view of this, the embodiments of this application provide a multi-sensor signal integrated transmission system for drilling platforms, which greatly reduces the difficulty of engineering construction, simplifies the data acquisition process, enhances the anti-interference capability of transmission, and improves the accuracy of data transmission.

[0008] The first aspect of this application provides a multi-sensor signal integrated transmission system for drilling platforms, including an analog signal processing module, a digital signal processing module, a microcontroller module, and an RS485 conversion module;

[0009] The input terminal of the analog signal processing module is used to connect to the analog signal output terminal of the weight sensor and / or pressure sensor, and the output terminal of the analog signal processing module is connected to the analog signal input terminal of the microcontroller module.

[0010] The digital signal processing module is used to connect to the digital signal output terminal of the winch sensor, and the output terminal of the digital signal processing module is connected to the digital signal input terminal of the microcontroller module.

[0011] The output of the microcontroller module is connected to the input of the RS485 conversion module, and the output of the RS485 conversion module is used to connect to the ground system.

[0012] Preferably, the system also includes a power supply module, the input of which is connected to a 24V DC source, and the output of which outputs 2.5V, 5V, 12V and -12V voltages. The output of the power supply module is connected to the power signal input of the analog signal processing module, the digital signal processing module, the signal compilation module, the microcontroller module and the RS485 conversion module, respectively.

[0013] Preferably, the power module includes a first precision bandgap reference voltage source chip, a second precision bandgap reference voltage source chip, a first power converter, a second power converter, a third power converter, a seventh capacitor, a ninth capacitor, a thirty-fourth capacitor, a thirty-fifth capacitor, first to ninth tantalum capacitors, and a sixth diode;

[0014] The INPUT terminal of the first precision bandgap reference voltage source chip is connected to a +12V DC source and one end of the thirty-fourth capacitor, and the OUTPUT terminal is connected to one end of the ninth capacitor and the anode of the fifth tantalum capacitor. The other end of the thirty-fourth capacitor is connected to the cathode of the fifth tantalum capacitor and the other end of the ninth capacitor.

[0015] The INPUT terminal of the second precision bandgap reference voltage source chip is connected to the +12V DC source of the first power converter and one end of the thirty-fifth capacitor, and the OUTPUT terminal is connected to one end of the seventh capacitor and the anode of the sixth tantalum capacitor. The other end of the thirty-fifth capacitor is connected to the cathode of the sixth tantalum capacitor and the other end of the seventh capacitor.

[0016] The +VO terminal of the first power converter is connected to the +12V DC source and the anode of the seventh tantalum capacitor, the -VO terminal is connected to the -12V DC source and the anode of the eighth tantalum capacitor, and the VIN terminal is connected to the +24V DC source, the anode of the ninth tantalum capacitor, and the cathode of the sixth diode.

[0017] The +VO terminal of the second power converter is connected to the +5V DC source and the anode of the first tantalum capacitor, and the VIN terminal is connected to the +24V DC source and the anode of the second tantalum capacitor.

[0018] The VIN terminal of the third power converter is connected to the +12V DC source and the anode of the fourth tantalum capacitor, while the +VO terminal is connected to the anode of the third tantalum capacitor.

[0019] Preferably, the analog signal processing module includes first to fourth operational amplifiers, third to sixth resistors, eighth to tenth resistors, twentieth resistor, twenty-second resistor, twenty-third resistor, twenty-sixth resistor, twenty-ninth resistor, third to fifth capacitors, twenty-third capacitor, and twenty-ninth capacitor;

[0020] The OUTA terminal of the first operational amplifier is connected to one end of the fourth resistor. The other end of the fourth resistor is connected to the +INB terminal and one end of the fifth resistor. The +INA terminal is connected to the weight sensor, the twentieth resistor, and the third capacitor. The V+ terminal is connected to the +VO terminal and the twenty-third capacitor of the third power converter. The -INB terminal is connected to one end of the third resistor and one end of the sixth resistor. The other end of the sixth resistor is connected to one end of the twenty-third resistor and one end of the fifth capacitor through the twenty-second resistor. The other end of the twenty-third resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the third operational amplifier. The other end of the fifth capacitor is connected to the output terminal of the first stage operational amplifier of the third operational amplifier. One end of the twenty-sixth resistor is connected to the inverting input terminal of the first stage operational amplifier of the third operational amplifier, and the other end is connected to the output terminal of the first stage operational amplifier of the third operational amplifier.

[0021] The OUTA terminal of the second operational amplifier is connected to one end of the eighth resistor. The other end of the eighth resistor is connected to the +INB terminal and one end of the ninth resistor. The +INA terminal is connected to the voltage sensor, the twenty-first resistor, and the fourth capacitor. The V+ terminal is connected to the +VO terminal of the third power converter and the twenty-ninth capacitor. The -INB terminal is connected to one end of the tenth resistor. The other end of the tenth resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the fourth operational amplifier through the twenty-ninth resistor.

[0022] Preferably, the digital signal processing module includes a comparator U1, a first optocoupler U2, a second optocoupler U3, a NAND gate chip U4, a decoder U5, a voltage reference chip U11, a thirteenth resistor, and a sixteenth resistor;

[0023] The input terminal of the comparator is connected to the winch sensor. The 1OUT terminal of the comparator is connected to the input terminal of the first optocoupler U2. The output terminal of the first optocoupler U2 is connected to the 1A terminal of the NAND gate chip. The 2Y terminal of the NAND gate chip is connected to the A / 2 terminal of the decoder U5. The 3Y terminal of the NAND gate chip is connected to the B / 2 terminal of the decoder U5. The 2OUT terminal of the comparator is connected to the input terminal of the second optocoupler U3. The output terminal of the second optocoupler U3 is connected to the 4A and 4B terminals of the NAND gate chip.

[0024] The output of the decoder U5 is connected to the digital signal input of the microcontroller module.

[0025] The output terminal of the voltage reference chip U11 is connected to one end of the thirteenth and sixteenth resistors, and the other end of the sixteenth resistor is connected to the IN+ terminal of the comparator.

[0026] Preferably, the analog signal processing module outputs dual-channel analog signals to the microcontroller module through dual signal channels.

[0027] Preferably, the microcontroller module includes a microcontroller U20, a reset chip U22, and an analog-to-digital converter chip U19;

[0028] The input terminal of the analog-to-digital converter chip U19 is connected to the output terminal of the analog signal processing module, and the output terminal of the analog-to-digital converter chip U19 is connected to the input terminal of the microcontroller U20. The microcontroller U20 and the reset chip U22 are connected to the RS485 conversion module.

[0029] Preferably, the microcontroller is an AT89C52 and the reset chip is a MAX813L.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. The system comprises an analog signal processing module, a digital signal processing module, a microcontroller module, and an RS485 conversion module. The input of the analog signal processing module connects to the analog signal output of the weight sensor and / or pressure sensor, and its output connects to the analog signal input of the microcontroller module. The digital signal processing module connects to the digital signal output of the winch sensor, and its output connects to the digital signal input of the microcontroller module. The output of the microcontroller module connects to the input of the RS485 conversion module, which is used to connect to the ground system. This system enables the collection and integrated transmission of various engineering parameters from multiple engineering sensors during oil drilling platform construction, significantly reducing construction difficulty, simplifying data acquisition processes, enhancing anti-interference capabilities, and improving data transmission accuracy. The bus-based wiring method based on the RS485 protocol greatly simplifies system wiring complexity compared to traditional branch-wiring systems. This not only reduces construction difficulty and the possibility of wiring errors but also improves the overall reliability and maintainability of the system. The RS485-based transmission method increases the transmission distance of traditional wired signal transmission from 200 meters to 1000 meters, effectively resisting various interference factors in the complex electromagnetic environment of the drilling platform while increasing the convenience of on-site construction. This improved anti-interference capability ensures stable transmission of sensor signals, thereby improving the accuracy and reliability of data transmission and providing more accurate data support for drilling operations. By simplifying wiring, improving data transmission accuracy and reliability, and enhancing data processing efficiency, engineering costs are effectively reduced. At the same time, the system's efficient operation also brings greater economic benefits to drilling operations.

[0032] 2. The microcontroller module can simultaneously receive and process multiple sensor signals from both the analog and digital signal processing modules. By integrating and processing these signals, the system can quickly extract valuable information, providing real-time and comprehensive data support for drilling operations. This integrated processing of multi-sensor signals significantly improves data processing efficiency and accelerates decision-making.

[0033] 3. An RS485 conversion module enables the mutual conversion between TTL and RS485 signals, thus supporting remote data transmission and monitoring functions. This allows drilling platform managers to obtain critical drilling operation data anytime, anywhere, promptly identify and address potential safety hazards, and significantly improve operational safety. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic flowchart of a knowledge distillation method for image data provided in an embodiment of this application;

[0036] Figure 2 This is a connection diagram of the precision bandgap reference voltage source chip U23 in the power module;

[0037] Figure 3 This is a connection diagram of the precision bandgap reference voltage source chip U24 in the power module;

[0038] Figure 4 This is a connection diagram of the power converter U18 in the power module;

[0039] Figure 5 This is a connection diagram of the power converter U12 in the power module;

[0040] Figure 6 This is a connection diagram of the power converter U17 in the power module;

[0041] Figure 7 This is a connection diagram of operational amplifiers U13 and U15 in the analog signal processing module;

[0042] Figure 8 This is a connection diagram of operational amplifiers U14 and U16 in the analog signal processing module;

[0043] Figure 9 This is a connection diagram of the digital signal processing module;

[0044] Figure 10 This is a connection diagram of the microcontroller module;

[0045] Figure 11 This is a connection diagram of the RS485 conversion module. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0047] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0048] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0050] like Figure 1 As shown, the first aspect of this application provides a multi-sensor signal integrated transmission system for drilling platforms, including an analog signal processing module, a digital signal processing module, a microcontroller module, and an RS485 conversion module;

[0051] The input terminal of the analog signal processing module is used to connect to the analog signal output terminal of the weight sensor and / or pressure sensor, and the output terminal of the analog signal processing module is connected to the analog signal input terminal of the microcontroller module; the digital signal processing module is used to connect to the digital signal output terminal of the winch sensor, and the output terminal of the digital signal processing module is connected to the digital signal input terminal of the microcontroller module; the output terminal of the microcontroller module is connected to the input terminal of the RS485 conversion module, and the output terminal of the RS485 conversion module is used to connect to the ground system.

[0052] In the application, the power supply module converts the 24V DC source to 2.5V, 5V, 12V, and -12V to provide reference power and chip power for the entire system; the MCU integrated module receives and processes the dual-channel analog signals transmitted by the analog signal processing module, while capturing the digital pulse signals sent by the digital signal processing module, integrating and compiling all received sensor data, and communicating with the PC (personal computer) via the UART (Universal Asynchronous Receiver / Transmitter) protocol; the analog signal processing module has dual signal channels for acquiring analog electrical signals from two hydraulic sensors on the oil drilling platform and amplifying and shaping them; the digital signal processing module acquires digital pulse signals from the winch sensor on the oil drilling platform and performs signal separation processing through a decoder; the RS485 conversion module converts the TTL signals output by the microcontroller to RS485 signals, and converts the RS485 signals sent to the microcontroller to TTL signals.

[0053] In one embodiment, the system further includes a power supply module. The power supply module has an input terminal connected to a 24V DC source and an output terminal that outputs 2.5V, 5V, 12V, and -12V voltages. The output terminal of the power supply module is connected to the power signal input terminals of the analog signal processing module, the digital signal processing module, the signal compilation module, the microcontroller module, and the RS485 conversion module, respectively.

[0054] In one embodiment, the power module includes a first precision bandgap reference voltage source chip, a second precision bandgap reference voltage source chip, a first power converter, a second power converter, a third power converter, a seventh capacitor, a ninth capacitor, a thirty-fourth capacitor, a thirty-fifth capacitor, first to ninth tantalum capacitors, and a sixth diode.

[0055] The INPUT terminal of the first precision bandgap reference voltage source chip is connected to a +12V DC source and one end of the thirty-fourth capacitor. The OUTPUT terminal is connected to one end of the ninth capacitor and the anode of the fifth tantalum capacitor. The other end of the thirty-fourth capacitor is connected to the cathode of the fifth tantalum capacitor and the other end of the ninth capacitor.

[0056] The INPUT terminal of the second precision bandgap reference voltage source chip is connected to the +12V DC source of the first power converter and one end of the thirty-fifth capacitor. The OUTPUT terminal is connected to one end of the seventh capacitor and the anode of the sixth tantalum capacitor. The other end of the thirty-fifth capacitor is connected to the cathode of the sixth tantalum capacitor and the other end of the seventh capacitor.

[0057] The +VO terminal of the first power converter is connected to the +12V DC source and the anode of the seventh tantalum capacitor, the -VO terminal is connected to the -12V DC source and the anode of the eighth tantalum capacitor, and the VIN terminal is connected to the +24V DC source, the anode of the ninth tantalum capacitor, and the cathode of the sixth diode.

[0058] The +VO terminal of the second power converter is connected to the +5V DC source and the anode of the first tantalum capacitor, and the VIN terminal is connected to the +24V DC source and the anode of the second tantalum capacitor.

[0059] The VIN terminal of the third power converter is connected to the +12V DC source and the anode of the fourth tantalum capacitor, while the +VO terminal is connected to the anode of the third tantalum capacitor.

[0060] In applications, such as Figures 2-6 As shown, the power module includes precision bandgap reference voltage source chips U23 and U24, power converters U18, U12, and U17, capacitors C7, C9, C34, and C35, tantalum capacitors E1, E2, E3, E4, E5, E6, E7, E8, and E9, and diode D6. The precision bandgap reference voltage source chip U23 is model LT1019IN8-2.5. Its pin 2 is connected to pin 9 of U18 (+12V DC source), pin 4 is grounded, and pin 6 is connected to capacitor C9.

[0061] The precision bandgap reference voltage source chip U23 has the model number LT1019IN8-5.0. Its pin 2 is connected to pin 9 of U18 (+12V DC source), pin 4 is grounded, and pin 6 is connected to capacitor C7.

[0062] The power converter U18 has the model number WRA2412N-2W. Its pin 1 is grounded, pin 8 is grounded, pin 9 is connected to the anode of tantalum capacitor E7, pin 10 is connected to the anode of tantalum capacitor E8, and pin 16 is connected to the anode of tantalum capacitor E9.

[0063] The power converter U12 has the model number WRA2405N-2W. Its pin 1 is grounded, pin 9 is connected to the anode of tantalum capacitor E1, pin 10 is grounded, and pin 16 is connected to a +24V DC power source.

[0064] Power converter U17, model number H1212D-1W, has the following pin connections: pin 1 connects to pin 9 of U18; pin 2 and pin 10 are grounded; pin 12 connects to the anode of tantalum capacitor E3; pin 13 connects to pin 12; and pin 15 is grounded. Capacitor C7 has one end connected to pin 6 of U24 and the other end grounded. Capacitor C9 has one end connected to pin 6 of U23 and the other end grounded. Capacitor C34 has one end connected to pin 2 of U23 and the other end connected to pin 4 of U23. Tantalum capacitor E1 has its anode connected to pin 9 of U12 and its cathode connected to pin 10 of U12. Tantalum capacitor E2 has its anode connected to pin 16 of U12 and its cathode connected to pin 15. Connect pin 10 of U12; Anode of tantalum capacitor E3 is connected to pin 13 of U17, cathode is grounded; Anode of tantalum capacitor E4 is connected to pin 1 of U17, cathode is connected to pin 2 of U17; Anode of tantalum capacitor E5 is connected to pin 6 of U23, cathode is grounded; Anode of tantalum capacitor E6 is connected to pin 6 of U24, cathode is grounded; Anode of tantalum capacitor E7 is connected to pin 9 of U18, cathode is grounded; Anode of tantalum capacitor E8 is connected to pin 10 of U18, cathode is grounded; Anode of tantalum capacitor E9 is connected to pin 16 of U18, cathode is grounded; Diode D6 is model 1N5359B, its cathode is connected to pin 16 of U18, anode is grounded.

[0065] The power module in this application can convert a 24V DC source to 2.5V, 5V, 12V, and -12V to meet the power supply requirements of different modules in the system. By using precision bandgap reference voltage source chips (such as LT1019IN8-2.5 and LT1019IN8-5.0) and various power converters (such as WRA2412N-2W, WRA2405N-2W, and H1212D-1W), high accuracy and stability of the output voltage are ensured. Furthermore, the use of capacitors and tantalum capacitors further enhances the filtering effect, reduces power supply noise, and improves the system's anti-interference capability. Diode D6 is used to protect the circuit from reverse voltage, thereby improving the system's reliability and safety.

[0066] In one embodiment, the analog signal processing module includes first to fourth operational amplifiers, third to sixth resistors, eighth to tenth resistors, twentieth resistor, twenty-second resistor, twenty-third resistor, twenty-sixth resistor, twenty-ninth resistor, third to fifth capacitors, twenty-third capacitor, and twenty-ninth capacitor.

[0067] The OUTA terminal of the first operational amplifier is connected to one end of the fourth resistor. The other end of the fourth resistor is connected to the +INB terminal and one end of the fifth resistor. The +INA terminal is connected to the weight sensor, the twentieth resistor, and the third capacitor. The V+ terminal is connected to the +VO terminal of the third power converter and the twenty-third capacitor. The -INB terminal is connected to one end of the third resistor and the sixth resistor. The other end of the sixth resistor is connected to one end of the twenty-third resistor and one end of the fifth capacitor through the twenty-second resistor. The other end of the twenty-third resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the third operational amplifier. The other end of the fifth capacitor is connected to the output terminal of the first stage operational amplifier of the third operational amplifier. One end of the twenty-sixth resistor is connected to the inverting input terminal of the first stage operational amplifier of the third operational amplifier, and the other end is connected to the output terminal of the first stage operational amplifier of the third operational amplifier.

[0068] The OUTA terminal of the second operational amplifier is connected to one end of the eighth resistor. The other end of the eighth resistor is connected to the +INB terminal and one end of the ninth resistor. The +INA terminal is connected to the voltage sensor, the twenty-first resistor, and the fourth capacitor. The V+ terminal is connected to the +VO terminal of the third power converter and the twenty-ninth capacitor. The -INB terminal is connected to one end of the tenth resistor. The other end of the tenth resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the fourth operational amplifier through the twenty-ninth resistor.

[0069] In applications, such as Figure 7 , 8 As shown, the analog signal processing module includes operational amplifiers U13, U14, U15, and U16; resistors R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R20, R21, R22, R23, R24, R25, R26, R27, R29, R30, R33, R34, R35, R36, and R37; capacitors C3, C4, C5, C6, C8, C10, C22, C23, C24, C25, C28, C29, C30, and C31; and fuse resistors F1 and F2.

[0070] Operational amplifier U13 is model OP497GPZ. Its pin 1 is connected to one end of resistor R4, pin 2 is connected to pin 1, pin 3 is connected to pin 2 of the suspension sensor port J3, pin 4 is pin 12 of U17, pin 5 is connected to the other end of resistor R4, pin 6 is connected to one end of resistor R6, pin 7 is connected to the other end of resistor R6, pin 8 is connected to one end of resistor R7, pin 9 is connected to pin 8, pin 10 is connected to one end of resistor R36, and pin 11 is connected to pin 10 of U18.

[0071] Operational amplifier U14 is model OP497GPZ. Its pin 1 is connected to one end of resistor R8, pin 2 is connected to pin 1, pin 3 is connected to pin 2 of the pressure sensor port J1, pin 4 is pin 12 of U17, pin 5 is connected to the other end of resistor R8, pin 6 is connected to one end of resistor R10, pin 7 is connected to the other end of resistor R10, pin 8 is connected to one end of resistor R3, pin 9 is connected to pin 8, pin 10 is connected to one end of resistor R37, and pin 11 is connected to pin 10 of U18.

[0072] Operational amplifier U15 is model OP297F. Its pin 1 is connected to pin 5, pin 2 is connected to one end of R24, pin 3 is connected to one end of resistor R23, pin 4 is connected to pin 10 of U18, pin 5 is connected to one end of capacitor C5, pin 6 is connected to pin 7, pin 7 is connected to pin 18 of U19, and pin 8 is connected to pin 9 of U18.

[0073] Operational amplifier U16, model OP297F, has the following pin connections: pin 1 connects to one end of resistor R33; pin 2 connects to pin 1; pin 3 connects to one end of resistor R29; pin 4 connects to pin 10 of U18; pin 5 connects to one end of resistor R33; pin 6 connects to one end of resistor R25; pin 7 connects to pin 17 of U19; and pin 8 connects to pin 9 of U18. Resistor R3 connects to pin 8 of U14, and its other end connects to pin 6 of U13. Resistor R4 connects to pin 1 of U13, and its other end connects to one end of resistor R5. Resistor R5 connects to one end of R4, and its other end is grounded. Resistor R6 connects to pin 6 of U13, and its other end connects to pin 7. Resistor R7 connects to pin 8 of U13. One end of resistor R8 is connected to pin 1 of U14, and the other end is connected to resistor R9; one end of resistor R9 is connected to R8, and the other end is grounded; one end of resistor R10 is connected to pin 6 of U14, and the other end is connected to pin 7; one end of resistor R11 is connected to pin 10 of U13, and the other end is grounded; one end of resistor R12 is connected to U14, and the other end is grounded; one end of resistor R20 is connected to pin 3 of U13, and the other end is grounded; one end of resistor R21 is connected to pin 3 of U14, and the other end is grounded; one end of resistor R22 is connected to pin 7 of U13, and the other end is connected to R23; one end of resistor R23 is connected to R22, and the other end is connected to pin 3 of U15; one end of resistor R24 ​​is connected to pin 2 of U15. One end of resistor R25 is connected to pin 6 of U16, and the other end is grounded; one end of resistor R26 is connected to pin 2 of U15, and the other end is connected to pin 1 of U16; one end of resistor R27 is connected to pin 6 of U16, and the other end is connected to pin 7 of U16; one end of resistor R29 is connected to pin 7 of U14, and the other end is connected to pin 3 of U16; one end of resistor R30 is connected to pin 3 of U16, and the other end is grounded; one end of resistor R33 is connected to pin 1 of U16, and the other end is connected to pin 5 of U16; one end of resistor R34 is connected to pin 10 of U13, and the other end is connected to pin 6 of U23; one end of resistor R35 is connected to pin 10 of U14, and the other end is connected to... Connect pin 6 of U23; connect one end of resistor R36 to pin 10 of U13 and the other end to ground; connect one end of resistor R37 to pin 10 of U14 and the other end to ground; connect one end of capacitor C3 to pin 3 of U13 and the other end to ground; connect one end of capacitor C4 to pin 3 of U14 and the other end to ground; connect one end of capacitor C5 to pin 1 of U15 and the other end to resistor R22; connect one end of capacitor C6 to pin 3 of U15 and the other end to ground; connect one end of capacitor C8 to pin 3 of U16 and the other end to ground; connect one end of capacitor C10 to pin 3 of U16 and the other end to ground; connect one end of capacitor C22 to pin 11 of U13 and the other end to ground; connect one end of capacitor C23 to pin 4 of U13 and the other end to ground.One end of capacitor C24 is connected to pin 4 of U15, and the other end is grounded; one end of capacitor C25 is connected to pin 8 of U15, and the other end is grounded; one end of capacitor C28 is connected to pin 11 of U14, and the other end is grounded; one end of capacitor C29 is connected to pin 4 of U14, and the other end is grounded; one end of capacitor C30 is connected to pin 4 of U16, and the other end is grounded; one end of capacitor C31 is connected to pin 8 of U16, and the other end is grounded; one end of fuse resistor F1 is connected to a 24V DC power supply, and the other end is connected to pin 2 of port J1 of the vertical pressure sensor; one end of fuse resistor F2 is connected to a 24V DC power supply, and the other end is connected to pin 2 of port J3 of the suspended weight sensor.

[0074] The analog signal processing module is used to process the analog signals received by pin 2 of the vertical pressure sensor port J1 and pin 2 of the suspended weight sensor port J3. The signals are configured as voltage followers by operational amplifiers U14 and U13 respectively for signal safety isolation, and are amplified and noise reduced by operational amplifiers U16 and U15 respectively.

[0075] The analog signal processing module in this embodiment utilizes operational amplifiers (such as OP497GPZ and OP297F) to amplify and shape the analog signals from the weight sensor and the pressure sensor. By configuring it as a voltage follower structure, safe signal isolation is achieved, and the stability and accuracy of the signal are further enhanced through multi-stage operational amplifiers. The reasonable layout of resistors and capacitors not only helps eliminate noise but also ensures the quality of signal transmission. The design of fuse resistors F1 and F2 effectively prevents equipment damage under overcurrent conditions, improving the overall robustness of the system.

[0076] In one embodiment, the digital signal processing module includes a comparator U1, a first optocoupler U2, a second optocoupler U3, a NAND gate chip U4, a decoder U5, a voltage reference chip U11, a thirteenth resistor, and a sixteenth resistor.

[0077] The input terminal of the comparator is connected to the winch sensor. The 1OUT terminal of the comparator is connected to the input terminal of the first optocoupler U2. The output terminal of the first optocoupler U2 is connected to the 1A terminal of the NAND gate chip. The 2Y terminal of the NAND gate chip is connected to the A / 2 terminal of the decoder U5. The 3Y terminal of the NAND gate chip is connected to the B / 2 terminal of the decoder U5. The 2OUT terminal of the comparator is connected to the input terminal of the second optocoupler U3. The output terminal of the second optocoupler U3 is connected to the 4A and 4B terminals of the NAND gate chip.

[0078] The output of decoder U5 is connected to the digital signal input of the microcontroller module.

[0079] The output of voltage reference chip U11 is connected to one end of the thirteenth and sixteenth resistors, and the other end of the sixteenth resistor is connected to the IN+ terminal of the comparator.

[0080] In applications, such as Figure 9 As shown, the digital signal processing module includes a comparator U1, optocouplers U2 and U3, a NAND gate chip U4, a decoder U5, a voltage reference chip U11, a fuse resistor F3, resistors R1, R2, R13, R14, R15, R16, R17, R18, and R19, capacitors C1, C2, C14, C15, and C16, Zener diodes D1 and D2, and a fuse resistor F3.

[0081] The comparator U1 is model LM393. Its pin 1 is connected to pin 2 of U2, pin 2 is connected to pin 6, pin 3 is connected to the cathode of diode D1, pin 4 is grounded, pin 5 is connected to the cathode of diode D2, pin 6 is connected to pin 2, pin 7 is connected to pin 2 of U3, and pin 8 is connected to pin 12 of U17.

[0082] The optocoupler U2 is model TLP521. Its pin 1 is connected to one end of resistor R14, pin 2 is connected to pin 1 of U1, pin 3 is grounded, and pin 4 is connected to pin 1 of U4.

[0083] The optocoupler U3 is model TLP521. Its pin 1 is connected to one end of resistor R15, pin 2 is connected to pin 7 of U1, pin 3 is grounded, and pin 4 is connected to pin 12 of U4.

[0084] The NAND gate chip U4 is model number SN74LS132N. Its pin 1 is connected to pin 4 of U2, pin 2 is connected to pin 1, pin 3 is connected to pin 4, pin 4 is connected to pin 5, pin 5 is connected to pin 3, pin 6 is connected to pin 2 of U5, pin 7 is grounded, pin 8 is connected to pin 3 of U5, pin 9 is connected to pin 10, pin 10 is connected to pin 11, pin 11 is connected to pin 9, pin 12 is connected to pin 4 of U3, pin 13 is connected to pin 12, and pin 14 is connected to pin 9 of U12.

[0085] The decoder chip U5 is model CD4555BE. Its pin 1 is grounded, pin 2 is connected to pin 6 of U4, pin 3 is connected to pin 8 of U4, pin 4 is connected to pin 5 of U20, pin 5 is connected to pin 6 of U20, pin 6 is connected to pin 7 of U20, pin 7 is connected to pin 8 of U20, pin 8 is grounded, and pin 16 is connected to pin 9 of U12.

[0086] The voltage reference chip U11 is model LM236H2.5. Its pin 2 is connected to one end of resistor R13, and pin 3 is grounded. One end of resistor R1 is connected to pin 3 of U1, and the other end is grounded. One end of resistor R2 is connected to pin 2 of U1, and the other end is grounded. One end of resistor R13 is connected to pin 12 of U17, and the other end is connected to pin 2 of U11. One end of resistor R14 is connected to pin 12 of U17, and the other end is connected to pin 1 of U2. One end of resistor R15 is connected to pin 12 of U17, and the other end is connected to pin 1 of U3. One end of resistor R16 is connected to pin 2 of U11, and the other end is connected to pin 2 of U1. One end of resistor R17 is connected to pin 9 of U12, and the other end is connected to pin 4 of U2. One end of resistor R18 is connected to pin 9 of U12. One end of the capacitor C1 is connected to pin 4 of U3, and the other end is connected to pin 5 of U1. One end of the resistor R19 is connected to pin 5 of U1, and the other end is grounded. One end of the capacitor C1 is connected to pin 3 of U1, and the other end is grounded. One end of the capacitor C2 is connected to pin 5 of U1, and the other end is grounded. One end of the capacitor C14 is connected to pin 8 of U1, and the other end is grounded. One end of the capacitor C15 is connected to pin 16 of U5, and the other end is grounded. One end of the capacitor C16 is connected to pin 14 of U4, and the other end is grounded. The Zener diode D1 is a 1N4737, with its cathode connected to pin 3 of U1 and its anode grounded. The Zener diode D2 is a 1N4737, with its cathode connected to pin 5 of U1 and its anode grounded. One end of the fusible resistor F3 is connected to pin 1 of the winch sensor port J2, and the other end is connected to pin 12 of U17.

[0087] The digital signal processing module receives digital pulse signals from pins 2 and 3 of the winch sensor port J2. The signal is filtered by comparator U1, shaped into a 5V pulse signal by optocouplers U2 and U3, and then converted into a four-bit signal by decoder U5.

[0088] The digital signal processing module in this embodiment uses a comparator LM393 and an optocoupler TLP521 to filter and shape the digital pulse signal from the winch sensor, ensuring signal purity and stability. The combination of a NAND gate chip SN74LS132N and a decoder CD4555BE enables efficient conversion of a two-bit input signal into a four-bit output signal, simplifying subsequent data processing. The use of Zener diodes D1 and D2 and capacitors C1 to C16 significantly improves the circuit's anti-interference performance, ensuring reliable signal transmission. The overall design improves signal processing efficiency while also enhancing system stability and maintainability.

[0089] In one embodiment, the analog signal processing module outputs dual-channel analog signals to the microcontroller module through dual signal channels.

[0090] In one embodiment, the microcontroller module includes a microcontroller U20, a reset chip U22, and an analog-to-digital converter chip U19;

[0091] The input terminal of the analog-to-digital converter chip U19 is connected to the output terminal of the analog signal processing module, the output terminal of the analog-to-digital converter chip U19 is connected to the input terminal of the microcontroller U20, and the microcontroller U20 and the reset chip U22 are connected to the RS485 conversion module.

[0092] In applications, such as Figure 10 As shown, the microcontroller module includes a microcontroller U20, a reset chip U22, an analog-to-digital converter chip U19, capacitors C11, C12, C13, C17, C18, C19, C26, C27, and C33, resistors R28, R38, and R40, a crystal oscillator X1, and a resistor array RN1.

[0093] The microcontroller U20 is model AT89C52. Its pin 3 connects to pin 2 of U21, pin 4 connects to pin 6 of U22, pin 5 connects to pin 4 of U5, pin 6 connects to pin 5 of U5, pin 7 connects to pin 6 of U5, pin 8 connects to pin 7 of U5, pin 9 connects to pin 7 of U22, pin 10 connects to pin 1 of U21, pin 11 connects to pin 4 of U21, pin 12 connects to pin 10 of U19, pin 16 connects to pin 12 of U19, pin 17 connects to pin 11 of U19, and pin 18 connects to capacitor C12. Pin 19 is connected to capacitor C13, pin 20 is grounded, pin 21 is connected to pin 14 of U19, pin 22 is connected to pin 1 of U19, pin 31 is connected to pin 9 of U12, pin 32 is connected to pin 2 of U19, pin 33 is connected to pin 3 of U19, pin 34 is connected to pin 4 of U19, pin 35 is connected to pin 5 of U19, pin 36 is connected to pin 6 of U19, pin 37 is connected to pin 7 of U19, pin 38 is connected to pin 8 of U19, pin 39 is connected to pin 9 of U19, and pin 40 is connected to pin 9 of U12.

[0094] The reset chip U22 is model MAX813L. Its pin 1 is connected to one end of resistor R28, pin 2 is connected to pin 9 of U12, pin 3 is grounded, pin 4 is grounded, pin 6 is connected to pin 4 of U20, pin 7 is connected to pin 9 of U20, and pin 8 is connected to one end of resistor R28. The analog-to-digital converter chip U19 is model MAX1292. Its pin 1 is connected to pin 22 of U20, pin 2 to pin 32 of U20, pin 3 to pin 33 of U20, pin 4 to pin 34 of U20, pin 5 to pin 35 of U20, pin 6 to pin 36 of U20, pin 7 to pin 37 of U20, and pin 8... Pin 10 connects to pin 38 of U20, pin 9 connects to pin 39 of U20, pin 10 connects to pin 12 of U20, pin 11 connects to pin 17 of U20, pin 12 connects to pin 16 of U20, pin 13 is grounded, pin 14 connects to pin 21 of U20, pin 17 connects to pin 7 of U16, pin 18 connects to pin 7 of U15, pin 19 is grounded, pin 20 is grounded, pin 21 connects to one end of resistor R40, pin 22 connects to pin 6 of U24, pin 23 connects to pin 21, and pin 24 connects to pin 9 of U12; one end of capacitor C11 is connected to pin 23 of U19, and the other end is grounded; capacitor C1 2. Connect one end of capacitor C13 to pin 19 of U20 and the other end to ground; connect one end of capacitor C17 to pin 18 of U19 and the other end to ground; connect one end of capacitor C18 to pin 17 of U19 and the other end to ground; connect one end of capacitor C19 to pin 21 of U19 and the other end to ground; connect one end of capacitor C26 to pin 24 of U19 and the other end to ground; connect one end of capacitor C27 to pin 40 of U20 and the other end to ground; connect one end of capacitor C33 to pin 2 of U22 and the other end to ground; connect one end of resistor R28 to pin 1 of U22 and the other end to pin 8 of U22; connect one end of resistor R38 to pin 20 of U19. One end of the resistor R40 is connected to pin 21 of U19, and the other end is connected to pin 9 of U12. The crystal oscillator X1 has a frequency of 11.0592MHz. One end is connected to pin 18 of U20, and the other end is connected to pin 19 of U20. The resistor array RN1 has pin 1 connected to pin 9 of U12, pin 2 connected to pin 39 of U20, pin 3 connected to pin 38 of U20, pin 4 connected to pin 37 of U20, pin 5 connected to pin 36 of U20, pin 6 connected to pin 35 of U20, pin 7 connected to pin 34 of U20, pin 8 connected to pin 33 of U20, and pin 9 connected to pin 32 of U20.

[0095] The execution process of the internal program of the U20 microcontroller in the microcontroller module is as follows:

[0096] S1) The microcontroller U20 collects the 12-bit digital signal (8 bits + 4 sub-bits) emitted by the analog-to-digital converter chip U19 every t0 seconds through pins 32 to 39. After collecting the data from the two channels p1 and p2, the data collection stops.

[0097] S2) The microcontroller U20 monitors pins 4 to 7 of the decoder U5 through pins 5 to 8. When pins 4 to 7 of U5 send a signal, the microcontroller U20 accumulates the signal and obtains the calculation result S.

[0098] S3) The microcontroller U20 converts data p1, p2, and S into Modbus software protocol data frames, and then uses pins 10 and 11 of the serial interface to convert them into RS485 protocol via U21. The RS485 bus is then used to communicate with the ground system port J4 and the remote display port J5.

[0099] The microcontroller module in this embodiment uses the AT89C52 microcontroller as its core processor, along with the MAX1292 analog-to-digital converter chip and the MAX813L reset chip, to achieve accurate acquisition and processing of analog signals. It communicates with the PC via the UART protocol and supports the Modbus software protocol data frame format, facilitating remote data transmission and monitoring. A crystal oscillator X1 provides a stable clock source, while the resistor array RN1 and multiple capacitors (such as C11 to C33) ensure power supply stability and reduce noise interference. This module design not only improves data processing speed but also enhances the system's real-time response capability and reliability.

[0100] In one embodiment, such as Figure 11As shown, the RS485 conversion module includes an RS-485 chip U21, resistors R31, R32, R39, capacitor C32, Zener diodes D3 and D4, rectifier diode D5, fuse resistors F4 and F5; ground system port J4; remote display port J5; the RS-485 chip U21 is a MAX485, with pin 1 connected to pin 10 of U20, pin 2 connected to pin 3, pin 3 connected to pin 3 of U20, and pin 4 connected to U20. Pin 11 of U21 is connected to pin 5, ground is connected to pin 6, one end of resistor R39 is connected to pin 7, and the other end of resistor R39 is connected to pin 8. Pin 9 of U12 is connected to pin 9. One end of resistor R31 is connected to pin 7 of U21, and the other end is grounded. One end of resistor R32 is connected to pin 6 of U21, and the other end is connected to pin 9 of U12. One end of resistor R39 is connected to pin 6 of U21, and the other end is connected to pin 7 of U21. One end of capacitor C32 is connected to pin 8 of U21. One end of the pin is connected to pin 7 of U21, and the other end is grounded; the Zener diode D3 is model 1N4733, its anode is grounded, and its cathode is connected to pin 6 of U21; the Zener diode D4 is model 1N4733, its anode is connected to pin 8 of U21, and its cathode is connected to pin 6 of U21; the rectifier diode D5 is model 1N4007, its anode is connected to pin 1 of the ground system port J4, and its cathode is connected to one end of F4; one end of the fusible resistor F4 is connected to the +24V DC power supply, and the other end is connected to the rectifier diode D5. The negative terminal of pin 5; one end of the fuse resistor F5 is connected to a +24V DC power source, and the other end is connected to pin 1 of the remote display port J5; pin 1 of the ground system port J4 is connected to the anode of rectifier diode D5, pin 2 is connected to pin 7 of U21, pin 3 is connected to pin 6 of U21, and pin 4 is grounded; pin 1 of the remote display port J5 is connected to one end of the fuse resistor F5, pin 2 is connected to pin 7 of U21, pin 3 is connected to pin 6 of U21, and pin 4 is grounded.

[0101] The RS485 conversion module is used to convert the RS232 communication protocol of the MCU integrated module to the RS485 communication protocol, and to communicate with the ground system port J4 and the remote display port J5.

[0102] The RS485 conversion module in this embodiment uses the MAX485 RS-485 chip to convert between TTL and RS485 signals, supporting long-distance, high-interference-resistant data transmission. The proper configuration of resistors R31, R32, R39 and capacitor C32 ensures signal integrity and stability. The application of Zener diodes D3 and D4 and rectifier diode D5 improves the circuit's protection capabilities, preventing the effects of overvoltage and reverse current. Fuse resistors F4 and F5 provide additional overcurrent protection. This module design significantly enhances the system's remote communication capabilities and anti-interference performance, ensuring the accuracy and reliability of data transmission.

[0103] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application, and should all be included within the protection scope of this application.

Claims

1. A multi-sensor signal integrated transmission system for drilling platforms, characterized in that, It includes an analog signal processing module, a digital signal processing module, a microcontroller module, and an RS485 conversion module; The input terminal of the analog signal processing module is used to connect to the analog signal output terminal of the weight sensor and / or pressure sensor, and the output terminal of the analog signal processing module is connected to the analog signal input terminal of the microcontroller module. The digital signal processing module is used to connect to the digital signal output terminal of the winch sensor, and the output terminal of the digital signal processing module is connected to the digital signal input terminal of the microcontroller module. The output of the microcontroller module is connected to the input of the RS485 conversion module, and the output of the RS485 conversion module is used to connect to the ground system. The analog signal processing module outputs dual-channel analog signals to the microcontroller module through dual signal channels; The microcontroller module includes a microcontroller, a reset chip, and an analog-to-digital converter chip; The input terminal of the analog-to-digital converter chip is connected to the output terminal of the analog signal processing module, the output terminal of the analog-to-digital converter chip is connected to the input terminal of the microcontroller, and the microcontroller and the reset chip are connected to the RS485 conversion module.

2. The drilling platform multi-sensor signal integrated transmission system as described in claim 1, characterized in that, It also includes a power supply module, whose input terminal is connected to a 24V DC source and whose output terminal outputs 2.5V, 5V, 12V and -12V voltages. The output terminal of the power supply module is connected to the power signal input terminals of the analog signal processing module, digital signal processing module, signal compilation module, microcontroller module and RS485 conversion module, respectively.

3. The drilling platform multi-sensor signal integrated transmission system as described in claim 2, characterized in that, The power module includes a first precision bandgap reference voltage source chip, a second precision bandgap reference voltage source chip, a first power converter, a second power converter, a third power converter, a seventh capacitor, a ninth capacitor, a thirty-fourth capacitor, a thirty-fifth capacitor, first to ninth tantalum capacitors, and a sixth diode. The INPUT terminal of the first precision bandgap reference voltage source chip is connected to a +12V DC source and one end of the thirty-fourth capacitor, and the OUTPUT terminal is connected to one end of the ninth capacitor and the anode of the fifth tantalum capacitor. The other end of the thirty-fourth capacitor is connected to the cathode of the fifth tantalum capacitor and the other end of the ninth capacitor. The INPUT terminal of the second precision bandgap reference voltage source chip is connected to the +12V DC source of the first power converter and one end of the thirty-fifth capacitor, and the OUTPUT terminal is connected to one end of the seventh capacitor and the anode of the sixth tantalum capacitor. The other end of the thirty-fifth capacitor is connected to the cathode of the sixth tantalum capacitor and the other end of the seventh capacitor. The +VO terminal of the first power converter is connected to the +12V DC source and the anode of the seventh tantalum capacitor, the -VO terminal is connected to the -12V DC source and the anode of the eighth tantalum capacitor, and the VIN terminal is connected to the +24V DC source, the anode of the ninth tantalum capacitor, and the cathode of the sixth diode. The +VO terminal of the second power converter is connected to the +5V DC source and the anode of the first tantalum capacitor, and the VIN terminal is connected to the +24V DC source and the anode of the second tantalum capacitor. The VIN terminal of the third power converter is connected to the +12V DC source and the anode of the fourth tantalum capacitor, while the +VO terminal is connected to the anode of the third tantalum capacitor.

4. The drilling platform multi-sensor signal integrated transmission system as described in claim 1, characterized in that, The analog signal processing module includes first to fourth operational amplifiers, third to sixth resistors, eighth to tenth resistors, twentieth resistor, twenty-second resistor, twenty-third resistor, twenty-sixth resistor, twenty-ninth resistor, third to fifth capacitors, twenty-third capacitor, and twenty-ninth capacitor; The OUTA terminal of the first operational amplifier is connected to one end of the fourth resistor. The other end of the fourth resistor is connected to the +INB terminal and one end of the fifth resistor. The +INA terminal is connected to the weight sensor, the twentieth resistor, and the third capacitor. The V+ terminal is connected to the +VO terminal and the twenty-third capacitor of the third power converter. The -INB terminal is connected to one end of the third resistor and one end of the sixth resistor. The other end of the sixth resistor is connected to one end of the twenty-third resistor and one end of the fifth capacitor through the twenty-second resistor. The other end of the twenty-third resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the third operational amplifier. The other end of the fifth capacitor is connected to the output terminal of the first stage operational amplifier of the third operational amplifier. One end of the twenty-sixth resistor is connected to the inverting input terminal of the first stage operational amplifier of the third operational amplifier, and the other end is connected to the output terminal of the first stage operational amplifier of the third operational amplifier. The OUTA terminal of the second operational amplifier is connected to one end of the eighth resistor. The other end of the eighth resistor is connected to the +INB terminal and one end of the ninth resistor. The +INA terminal is connected to the voltage sensor, the twenty-first resistor, and the fourth capacitor. The V+ terminal is connected to the +VO terminal of the third power converter and the twenty-ninth capacitor. The -INB terminal is connected to one end of the tenth resistor. The other end of the tenth resistor is connected to the non-inverting input terminal of the first stage operational amplifier of the fourth operational amplifier through the twenty-ninth resistor.

5. The drilling platform multi-sensor signal integrated transmission system as described in claim 1, characterized in that, The digital signal processing module includes a comparator, a first optocoupler, a second optocoupler, a NAND gate chip, a decoder, a voltage reference chip, a thirteenth resistor, and a sixteenth resistor; The input terminal of the comparator is connected to the winch sensor, the 1OUT terminal of the comparator is connected to the input terminal of the first optocoupler, the output terminal of the first optocoupler is connected to the 1A terminal of the NAND gate chip, the 2Y terminal of the NAND gate chip is connected to the A / 2 terminal of the decoder, the 3Y terminal of the NAND gate chip is connected to the B / 2 terminal of the decoder, the 2OUT terminal of the comparator is connected to the input terminal of the second optocoupler, and the output terminal of the second optocoupler is connected to the 4A and 4B terminals of the NAND gate chip. The output of the decoder is connected to the digital signal input of the microcontroller module. The output terminal of the voltage reference chip is connected to one end of the thirteenth and sixteenth resistors, and the other end of the sixteenth resistor is connected to the IN+ terminal of the comparator.

6. The drilling platform multi-sensor signal integrated transmission system as described in claim 1, characterized in that, The microcontroller is an AT89C52, and the reset chip is a MAX813L.

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