389 results about "Cable transmission" patented technology

The invention relates to the technical field of optical cable fault positioning, in particular to an optical cable fault positioning method and system and a storage medium. The method comprises the following steps: constructing an optical cable operation link topological graph by obtaining optical cable communication link operation data and combining optical cable transmission line distribution conditions and operation transmission link parameters; according to the abnormal trend data of the transmission signal of the optical cable and the link topological graph, measuring abnormal transition gradient distribution data of the link, and further detecting the abnormal state of the dynamic operation jump point of the optical cable; according to a detection result, analyzing abnormal data of an optical cable operation jump point structure, and identifying an optical cable transmission load imbalance condition; the optical cable operation performance degradation trend is predicted by evaluating the unbalanced load, finally, optical cable fault type division is performed, fault positioning processing is performed on a link topological graph, and optical cable fault positioning data is obtained; according to the invention, the optical cable fault is positioned, so that the optical cable fault identification is more accurate.

The invention discloses a radar and WiFi channel state information fused dual-mode household respiration monitoring device which comprises a radar signal collecting and processing module used for detecting a human body respiration signal through a millimeter wave FMCW radar and processing an I / Q orthogonal echo signal obtained by the FMCW radar to obtain a respiration signal; the WiFi signal acquisition and processing module is used for acquiring a CSI signal containing respiratory activity information through a WiFi wireless network card and calculating a CSI ratio of a receiving channel so as to remove time-varying noise and further extract a respiratory signal; the data communication module is used for constructing a networking system based on a millimeter wave FMCW radar and WiFi through different network cable transmission modes; and the breathing information fusion module is used for dynamically fusing the two breathing signals. Starting from multi-sensor respiration signal extraction, accurate detection of personnel respiration signals in a home indoor environment is realized through a fusion algorithm, and the detection method is effective, feasible and reliable in performance.

The invention discloses a porcelain insulator nondestructive testing device and method based on chirp modulation photoacoustic spectroscopy. The device comprises a signal generator, a signal processing module and a signal processing module, the laser is connected with the signal generator; the power amplifier is connected with the laser; the laser collimator is connected with the power amplifier; and the signal collector collects the sound wave signals, converts the sound wave signals into electric signals, transmits the electric signals to the computer through a cable for data processing, obtains a spectrogram of the sound wave signals, and judges whether defects exist in the porcelain insulator or not according to the spectrogram. According to the porcelain insulator nondestructive testing device adopting chirp modulation and photoacoustic spectroscopy, characteristic frequency scanning is achieved through chirp modulation, a porcelain insulator acoustic signal spectrogram is obtained through the solid photoacoustic effect, non-power-cut nondestructive testing of porcelain insulators can be achieved, and the detection efficiency of porcelain insulator defects is greatly improved.

The invention discloses an optical cable state intelligent monitoring system and method, and belongs to the technical field of optical cable state evaluation, and the method specifically comprises the steps: collecting optical cable related data in real time, including the structural parameters and optical signals of an optical cable, and carrying out the preprocessing of the collected optical cable related data, calculating the state of an optical cable power transmission line according to the preprocessed optical cable related data, and evaluating the state of the optical cable power transmission line; multiple factors such as optical signal reflection intensity, optical cable structure parameters, environmental data and bending influence are combined to form a comprehensive overall state evaluation model, the overall state of an optical cable line can be evaluated more comprehensively by integrating multiple influence factors, adjustment and optimization can be carried out according to different lines, equipment and environmental conditions, and the overall state of the optical cable line can be evaluated more comprehensively. And the requirements in different scenes are met.

A method is provided to measure the complex sensitivity of hydrophone data channels across a range of frequencies by using a water-filled tank with proximate boundaries. A hydrophone array and reference hydrophone are helically affixed to a test fixture resting on a rotation platform. When the test fixture is submerged in the tank; the platform rotates about a contour of the platform in intervals for a predetermined time interval before indexing to the next angle. Signals transmitted by an acoustic projector in the tank are received on the hydrophones of the line array and the calibrated reference hydrophone. Electrical signals from the reference hydrophone are transmitted over an electrical cable and received by the acoustic data processor for use in calibrating the hydrophone line array. Electrical signals from the hydrophones of the hydrophone line array are also transmitted to the data processor.

The invention discloses a chromaticity automatic gain control method and device for a composite video signal, and belongs to the technical field of signal processing, and the method comprises the steps: obtaining a chromaticity signal adjusted by a historical chromaticity gain parameter, and demodulating the chromaticity signal from the chromaticity signal to obtain a chromaticity component reference value of a color synchronization signal; calculating an actual color synchronization level and a phase deviation between an input color subcarrier and a local color subcarrier according to the color difference component reference value; in response to the chroma phase deviation meeting a preset chroma phase locking condition, generating a chroma phase locking identifier, and calculating a chroma gain error according to the actual color synchronization level; and determining a chrominance gain control stable identifier according to the chrominance gain error, and determining an output chrominance gain parameter based on the chrominance gain control stable identifier, the chrominance phase locking identifier and the chrominance gain error so as to dynamically adjust the next line of gain through closed-loop control. According to the invention, the influence of long-distance cable transmission on the composite video chrominance signal can be reduced, and the chrominance difference of different transmission distances is reduced.

The invention discloses a deep hole presplitting intelligent visiting and evaluating system and a method thereof, and belongs to the field of drilling peeping, and the system comprises a deep hole presplitting visiting bionic robot which is provided with a hydraulic dynamic reducing mechanism; the multi-modal fusion detection module is used for realizing omnibearing acquisition of monitoring data by adopting optical acoustic mechanics three-source sensing; the embedded real-time modeling module is internally provided with a large model and performs real-time three-dimensional modeling by programming a crack three-dimensional reconstruction algorithm; the edge calculation prediction module carries a heterogeneous calculation platform and is internally provided with a laser radar, and obstacle avoidance and accurate depth setting are carried out; and the communication and energy module adopts a dual-redundancy communication link, transmits high-broadband data by using an optical fiber composite cable, and transmits a key early warning signal. By adopting the deep hole presplitting intelligent visiting and evaluating system and the method thereof, the problems of low detection efficiency, single aperture adaptability and data dimension, insufficient analysis function and no prediction function of a traditional drilling peeping instrument are solved.

A vehicular sensing system includes a sensor disposed at a vehicle and sensing exterior of the vehicle. The sensor is operable to capture sensor data. An electronic control unit (ECU) includes electronic circuitry and associated software, with the electronic circuitry of the ECU including a data processor operable to process sensor data captured by the sensor and transferred to the ECU. The sensor connects with the ECU via a cable. The sensor is electrically powered by a power source, and the electrical power from the power source is not provided to the sensor via the cable. The cable carries an enable signal from the ECU to the sensor. T\Responsive to the sensor receiving the enable signal from the ECU, sensor data captured by the sensor is transferred to the ECU via the cable.

The invention discloses a cable detection device, belongs to the technical field of cable production, and aims to solve the problems that the flexible skin of a cable is compressed due to continuous pressurization, conductive liquid is more difficult to enter a damaged gap of the cable, and the detection precision is influenced. According to the technical scheme, the device is characterized in that the device comprises a detection box and a pressurization cavity formed in the detection box, the detection box and the pressurization cavity are both fixedly connected with wire guide wheels, a cable transmission line is formed through the wire guide wheels, and the pressurization cavity is connected with a pressurization mechanism which comprises a pressurization container, a piston and a reciprocating pushing assembly; the reciprocating pushing assembly drives the piston to reciprocate. According to the invention, through the composite propulsion effect of pulse pressure waves and bidirectional flow, the liquid penetration depth is increased by 40%, the detection blind area of the traditional soaking method on the false closing defects such as oxide layer covering cracks and impurity blocking cracks is successfully broken through, and the detection blind area is reduced by 60%-70%.

The invention discloses ship charging equipment, the ship charging equipment comprises a loading module, a charging module and a cable transmission module, the loading module comprises a first platform and a second platform which are arranged in the vertical direction, and the second platform is located above the first platform; the charging module is arranged on the first platform; the cable transmission module is arranged on the second platform, the cable transmission module comprises a cable and a charging gun, one end of the cable is electrically connected with the charging module, and the other end of the cable is connected with the charging gun. According to the ship charging equipment provided by the invention, the charging module and the cable transmission module are independently designed, and are separately arranged on the first platform and the second platform which are arranged up and down in the loading module, so that enough arrangement space is provided for the charging module and the cable transmission module in a limited space; therefore, the charging capability of the ship charging equipment can be improved, and the charging requirement of the ship with large electric quantity can be well met.

The utility model relates to an auxiliary bracket, and provides the auxiliary bracket for cable and wire production, which comprises a base, a mounting seat, a sliding seat, a transmission part I, a wire roller I and the like, mounting seats are symmetrically arranged on the left side and the right side of the base, sliding seats are arranged in the mounting seats, a first wire roller is rotationally arranged between the sliding seats, a first transmission part is vertically arranged on each mounting seat and composed of a transmission motor and a transmission lead screw, the sliding seats are driven by the transmission lead screws to slide up and down in the mounting seats, and then the first wire roller is driven to move up and down. According to the utility model, the cable is transmitted by arranging the cable roller I for lifting the cable and the two groups of cable rollers II for clamping the cable, so that the cable is always in contact with the rotating cable rollers in the transmission process, the friction force between the cable and the bracket is effectively reduced, the loss of the cable during transmission is reduced, and meanwhile, the adjustable cable rollers II are arranged, so that the transmission efficiency is improved. And the bracket can be adjusted according to cables with different wire diameters, so that different working requirements are met, and the applicability of the bracket disclosed by the utility model is improved.

An antenna system for radio mobile communications in vehicles having at least one remote antenna module connected with a cable to a central control unit; the remote antenna module having: a plurality of radiant elements, an RF front end and a control interface; the central control unit having: a signal processor, and a control interface; the control interface of the remote antenna module and the control interface of the central control unit are suitably configured for transmitting the input / output data signals and the control signals over the cable in order to control the control interface and the RF front end of the remote antenna module.

The utility model relates to the technical field of cables, in particular to a twisted-pair structure cable, which comprises a connector, the side surface of the connector is fixedly connected with a plurality of groups of first wire structures, each first wire structure comprises an insulating sleeve, a winding layer, a connecting block, a connecting clamping groove, a heat dissipation through hole and a plurality of groups of second wire structures, and the connecting blocks are arranged among the plurality of groups of second wire structures. A plurality of groups of second wire structures are stranded together, and each second wire structure comprises a metal belt, a hot melt mylar, an insulating belt and a copper wire; the two groups of copper wires containing the insulating tapes are twisted together, the resonance problem caused by cable attenuation is reduced by using the metal tapes, the transmission stability of the cable is improved, meanwhile, the second wire structures are twisted on the surfaces of the connecting blocks, direct contact of the multiple groups of second wire structures is avoided, the safety of the metal tapes is improved, and the service life of the cable is prolonged. And the heat dissipation capability of the cable is improved.

The invention relates to an underwater ultrasonic sensor and an underwater robot. The underwater ultrasonic sensor comprises a circular piezoelectric ceramic, a sealed shell and a cable, the circular piezoelectric ceramic is arranged in the sealed shell, and the cable penetrates through the sealed shell and is electrically connected with the circular piezoelectric ceramic; the shape of the sealing shell is matched with that of the circular piezoelectric ceramic; the circular piezoelectric ceramic is used for transmitting an ultrasonic signal within a preset angle range in a preset direction under the condition of receiving a control signal transmitted by the cable; the preset direction extends outwards along the radius direction of the circular piezoelectric ceramic; under the condition that an ultrasonic echo signal responding to the ultrasonic signal is received, the ultrasonic echo signal is output through the cable; the preset angle range is a circle center angle range formed by taking the circle center of the circular piezoelectric ceramic as a reference. The underwater ultrasonic sensor can perform large-range detection by transmitting ultrasonic signals in a preset angle range in a preset direction through the circular piezoelectric ceramics.

An apparatus includes a magnet comprising an electrically superconductive coil adapted to function in a driven mode. A magnet controller (210) is connected to the magnet. A power supply (122) adapted to provide direct current (DC) power to the magnet. An electrical connection is provided between the magnet to provide the DC power to the magnet. A communication interface (206) adapted to communicate signals across the cable between the power supply (122) and the magnet controller (210). The signals between the communication interface (206) and the magnet controller (210) are high-frequency (HF) signals that do not substantially interfere with the DC power transmitted across the cable.

A subsurface pumped hydropower storage system is provided and includes an upper reservoir, and a lower reservoir within a subsurface formation. The system includes a completed well extending into the subsurface geological strata to reach the lower reservoir, the completed well has a wellhead at the surface, a casing, a tubing string extending within the casing, the tubing being adapted to establish fluid communication between the upper reservoir and the lower reservoir. An electric submersible pump (ESP) operable in a turbine configuration and a pumping configuration is coupled to the tubing string, where, when in the turbine configuration, electricity is generated and transmitted to the surface via a power cable connected to the ESP, and, when in the pumping configuration, electricity is consumed to pump the working fluid from the lower reservoir into the upper reservoir.

The invention belongs to but not limited to the technical field of underwater navigation, and particularly relates to a multi-stage separable autonomous underwater vehicle and a control method thereof.The multi-stage separable autonomous underwater vehicle comprises propellers, a vehicle power module is composed of longitudinal propellers at the bottoms of all sections of power cabins, after all the sections of power cabins are separated, the next section of power cabin continues to run, and the propellers are started; when the aircraft body moves forwards, the continuous movement of the aircraft is ensured by the propellers; the power cabin is wrapped by a peripheral transparent fiber shell, and a power module, a battery pack and a control unit are arranged in the power cabin; a control core of the aircraft is arranged in a first section power cabin and comprises a lithium battery, a power supply module, a control board, a driving board and a communication board; in order to prevent seawater erosion, waterproof motors are adopted for executing mechanisms of the steering engines and the propellers, and control and driving signals are transmitted through watertight cables.

The invention relates to the field of network resource management, and discloses a dynamic resource allocation method for a power heavy-load optical cable transmission network, which comprises the following steps of: receiving service transmission requirements from each node or terminal in a power network, the service transmission requirements comprising data transmission quantity, service quality requirements, priority information and transmission time periods; the resource states of the electric power heavy load optical cable transmission network are monitored in real time, wherein the resource states comprise the optical cable bandwidth utilization rate, the optical power loss, the transmission delay and the network congestion condition; meanwhile, the network resources are evaluated according to the monitoring data, and the current resource quantity and the potential resource bottleneck are determined; determining a distribution coefficient obtained by resource distribution calculation based on the received service transmission demand and the resource state, matching with a preset distribution interval according to the distribution coefficient, and selecting a resource distribution scheme according to a matching result; and scheduling and executing the resources of the power heavy load optical cable transmission network according to the determined resource allocation scheme.

The invention provides an acoustic-magnetic coupling backflow cable nondestructive testing and long-distance transmission integrated method and system, and relates to the technical field of backflow cable transmission detection, accurate fault identification and positioning are realized by sending acoustic-magnetic dual excitation signals to a backflow cable, collecting responses, extracting multi-source features and then performing fusion model analysis, and the detection accuracy is improved. The problem that a traditional method is low in detection precision is solved. After being coded and modulated, a detection result is stably transmitted to a receiving end through a long-distance transmission link, so that the integration of nondestructive detection and long-distance transmission of the acoustic-magnetic coupling backflow cable is realized, and the defect of instability of long-distance transmission is overcome. And a self-adaptive power amplification and frequency hopping anti-interference mechanism is adopted in the transmission process, so that the anti-interference performance, the stability and the environmental adaptability of signal transmission are improved, and the actual requirements of backflow cable detection and long-distance transmission in a strong electromagnetic interference environment and a complex working condition are met. By introducing a self-adaptive calibration mechanism and comparing with a reference signal, excitation and acquisition parameters are corrected in real time, and the detection precision and the long-term reliability are further improved.

A marine vessel according to one aspect of the present disclosure comprises: a hull that includes a bow part and a stern part which is positioned rearward of the bow part; a plurality of power consumption devices that are positioned in the bow part and that consume power; a main power source that is positioned in the stern part and that operates in a normal time; an emergency power source that is positioned in the stern part and that operates in an emergency; a main cable that delivers electricity which has been outputted from the main power source to the bow part; an emergency cable that delivers electricity which has been outputted from the emergency power source to the bow part; a main splitter that is positioned in the bow part and that splits the electricity which has been delivered by the main cable; an emergency splitter that is positioned in the bow part and that splits the electricity which has been delivered by the emergency cable; a main splitter cable that delivers the electricity which has been split by the main splitter to at least one of the plurality of the power consumption devices; an emergency splitter cable that delivers the electricity which has been split by the emergency splitter to at least one of the plurality of the power consumption devices; a main splitting chamber that is positioned in the bow part and that has the main splitter installed therein; an emergency splitting chamber that is positioned in the bow part and that has the emergency splitter installed therein; and a separation chamber that is positioned between the main splitting chamber and the emergency splitting chamber and that separates the main splitting chamber and the emergency splitting chamber.

The invention provides a dynamic monitoring system and method for a submarine optical cable array reservoir, which is applied to the technical field of marine geophysical prospecting, and comprises a wet-end subsystem positioned underwater and a dry-end subsystem positioned on a base bank, the dry end subsystem comprises a light source module used for generating an optical signal; the modulation transmitting module is used for modulating the optical signal to obtain modulated pulse light; the underwater wet end subsystem comprises an optical cable transmission module used for transmitting modulation pulse light; the optical fiber four-component node module is used for dynamically and continuously monitoring the reservoir for a long time, and modulating the acquired sound pressure signal and the triaxial vibration signal onto the modulated pulse light in response to the received modulated pulse light to form a return light signal; the dry end subsystem further comprises a modulation-demodulation module used for receiving the return optical signal and demodulating the return optical signal to obtain four-component monitoring data. According to the invention, sound pressure and three-axis vibration response can be integrated on the same node, and passive four-component synchronous acquisition is realized.

The application discloses a cable twisting device for a wind turbine, and belongs to the technical field of cable twisting, which comprises a mounting seat, a twisting motor and a limiting sliding rod are fixedly arranged in the mounting seat, a plurality of threading holes are arranged on the bottom surface of the mounting seat, and a mounting shaft is fixedly arranged at one end of the output shaft of the twisting motor; in the application, the twisting mechanism is arranged in a matched mode, through the design, the installation of each main cable can be quickly completed, different cables are separated from each other, damage caused by mutual contact and twisting of the cables is avoided, the adjustable cable transmission assembly is arranged, the protection effect of the cables can be effectively achieved when the cables are twisted, damage is avoided, and the cables can be longitudinally positioned to a certain extent after the twisting, the subsequent twisting of the cables is avoided, and the practical application effect of the whole device is greatly improved.

The utility model belongs to the technical field of cable braiding, and relates to a high-speed braiding machine for cable production, which comprises a braiding main body and an output pipe arranged on one side of the braiding main body, a guide device is arranged in the output pipe, a first guide plate and a second guide plate are arranged, and a driving group is used for controlling a first connecting plate and a second connecting plate to move. The distance between the first guide plate and the second guide plate is controlled through movement of the first connecting plate and the second connecting plate, the adjacent sides of the first guide plate and the second guide plate are each provided with a plurality of guide blocks, and the edges of the adjacent sides of the multiple guide blocks are all arranged to be in an arc shape. The arrangement of the first guide plate and the second guide plate can guide the transmission of the braided cables, the arrangement of the plurality of guide blocks enables the transmission of the braided cables to be smoother, and the guide transmission of the cables of different specifications is realized by controlling the distance between the first guide plate and the second guide plate.

This invention discloses a wired-AND logic communication circuit based on optical fiber transmission, including a first level conversion circuit, a second level conversion circuit, a first laser control circuit, a second laser control circuit, photodetectors D1a and D1b, lasers D2a and D2b, and an optical fiber transmission system. The optical fiber transmission system is used to transmit the optical signal from laser D2a to photodetector D1b and to transmit the optical signal from laser D2b to photodetector D1a. The first level conversion circuit controls the state of a first port based on the state of photodetector D1a, the second level conversion circuit controls the state of a second port based on the state of photodetector D1b, the first laser control circuit controls the state of laser D2a based on the state of photodetector D1a and the state of the first port, and the second laser control circuit controls the state of laser D2b based on the state of photodetector D1b and the state of the second port. This invention solves the problem of limited long-distance cable transmission.

The application belongs to the technical field of power cable installation equipment, and particularly relates to an angle-adjustable cable power transmission tower cross arm, which comprises a supporting device and a cross arm device. The supporting device comprises a mounting panel, a supporting arm and an adjusting mechanism, the cross arm device is arranged on the supporting device, the adjusting mechanism is arranged on the supporting device, the relative position of the cross arm device and the supporting device is changed by using the adjusting mechanism, and the cross arm device is adjusted in multiple postures such as parallel, inclined support and vertical. One end of the supporting arm is fixed to the upper portion of the front side of the mounting panel, the other end extends outward, and a load-bearing hinge seat is arranged at the end of the supporting arm away from the mounting panel. The angle-adjustable cable power transmission tower cross arm has the multiple-posture adjusting function, the adjusting mechanism with the telescopic function and the double-hinge connection structure are connected, the multiple-posture switching of the cross arm device is realized, the load-bearing hinge seat is used as a rotating fulcrum, the extension length of the telescopic rod is changed, the cross arm device is switched among multiple postures such as parallel, inclined support and vertical, and the differentiated requirements of complex terrains and line directions are met.

The utility model relates to a cooling device, and provides a sheath cooling device for cable production, which comprises a pipeline, a separation cover, a liquid collection frame and the like, a cooling channel is arranged in the pipeline, no less than two isolation covers are arranged on the pipeline at intervals, spraying cavities are formed in the isolation covers, the spraying cavities in the isolation covers are communicated with the cooling channel in the pipeline, and a cable needing to be cooled penetrates in from the right end of the pipeline, rightwards passes through the cooling channel and the spraying cavities in the isolation covers and penetrates out from the left end in the pipeline. Liquid collecting frames are arranged at the lower parts of the isolation covers, and the inner spaces of the liquid collecting frames are communicated with the inner spaces of the isolation covers. According to the utility model, the plurality of spraying areas are arranged on the cooling channel, and the temperature of the spraying liquid in each spraying area is gradually reduced along the transmission direction of the cable, so that a stepped temperature control effect from high temperature to low temperature is formed, the cable sheath is ensured to be properly cooled at different stages, the water consumption is reduced, and the production efficiency is improved. And the quality problem caused by non-uniform cooling is avoided, uniform curing of the cable sheath is ensured, and the cooling efficiency and the energy utilization rate are improved.

The utility model discloses a railway vibration damping four-in four-out optical cable joint box, which comprises a shell assembly, a main frame body, a fiber splice tray and a buffer vibration damping gasket, first accommodating grooves are formed in two axial ends of an inner cavity of the shell assembly, a second accommodating groove is formed between the two first accommodating grooves, the main frame body is arranged in the shell assembly, and the buffer vibration damping gasket is arranged in the shell assembly. The shell assembly comprises a first accommodating groove and a second accommodating groove, two ends of the first accommodating groove are bent to form a bracket plug for penetrating an optical cable, the bracket plug is embedded in the first accommodating groove, the fiber melting disc is arranged on the main frame body and is accommodated in the second accommodating groove, and the buffer anti-vibration pad is arranged on the frame body between the bracket plug and the fiber melting disc to completely isolate the main frame body from the shell assembly. Through the above mode, the vibration-damping four-in four-out optical cable joint box for the railway can realize'four-in four-out 'multichannel transmission, meets the requirements of railway and subway optical cable transmission, isolates the main frame body from the shell through the vibration-damping gasket, reduces vibration, avoids frequent replacement, improves reliability, prolongs the service life, and reduces cost.

The invention discloses a cable transmission time delay test system, which comprises a pulse generation module, a tee joint or circulator, a signal amplification shaping module and a time difference measurement module, and is characterized in that the output end of the pulse generation module is connected with the first port of the tee joint or circulator, and the second port of the tee joint or circulator is electrically connected with a to-be-tested cable; the third port of the tee joint or the circulator is electrically connected with the input end of the signal amplifying and shaping module, and the output end of the signal amplifying and shaping module is electrically connected with the input end of the time difference measuring module. A test pulse signal is injected into the to-be-tested cable through the second port of the tee joint or the circulator, then an echo signal reflected by the tail end of the to-be-tested cable is collected, the time interval between the test pulse signal and the echo signal is measured, and finally the transmission time delay of the to-be-tested cable is calculated according to the time interval. Therefore, the test can be completed only by contacting one end of the cable, the installed equipment does not need to be disassembled, the on-site test process is simplified, and the efficiency is improved.

The invention relates to a multi-dimensional heat distribution pipeline monitoring system and method based on an integrated monitoring unit, and the system comprises an underwater sound sensing module which employs piezoelectric ceramics as a transduction material, deforms under the sound pressure effect to generate an electric signal, converts the electric signal into an output signal through an amplification circuit, and transmits the output signal to a data receiving and transmitting module; the high-frequency pressure module and the high-frequency pressure sensing module adopt an MEMS (Micro Electro Mechanical System) process to directly manufacture a strain resistor on a stainless steel isolation diaphragm as a resistance element, and the isolation diaphragm is stressed to generate an electric signal which is transmitted to the data receiving and transmitting module through a connecting cable after being amplified; the temperature sensing module outputs an electric signal based on the characteristic that a metal resistor changes along with temperature, and the electric signal is amplified and then transmitted to the data receiving and transmitting module through a connecting cable. According to the invention, the daily operation environment and the abnormal environment of the pipeline can be distinguished, and the dependence on the material and environment of the pipeline is reduced, so that the sensing monitoring unit has higher adaptability, and leakage can be better judged.

This invention provides an FPGA-based encoding method for single-core cable logging, comprising: detecting whether the edge of the original transmitted signal changes; if the edge of the original transmitted signal changes, encoding the original transmitted signal using two pulse signals to obtain a final output signal in which positive and negative levels cancel each other out. This invention uses an FPGA module and an external driving circuit in synergy to encode the original transmitted signal, resulting in a final output signal in which positive and negative levels cancel each other out. This invention effectively avoids baseline drift-induced glitches that interfere with the signal and affect data accuracy, thus solving the problem of level fluctuations affecting the signal in single-core cable transmission for oil logging.