77results about How to "Stable signal" patented technology

The invention discloses an intelligent navigation system and method for a ship in the technical field of ship navigation, and the system comprises a sensing module which is used for collecting the surrounding environment information and the state information of the ship in real time; the data processing and fusing module is used for preprocessing, calibrating and fusing the surrounding environment information and the self state information of the sensing module; the route optimization module is used for formulating a navigation plan and a collision avoidance strategy; the navigation control module is used for autonomously controlling the ship according to the output of the ship route optimization module; and the communication monitoring module monitors the navigation state of the ship and the change of the surrounding environment through real-time communication between the ship and a shore-based control center, other ships and a maritime affair management department. According to the method, data of different sensing units are associated, and the associated data are fused, so that mutual verification and complementation can be realized, and the accuracy and reliability of target identification are improved.

The embodiment of the invention provides a display panel and a display device. According to the display panel, voltage stabilizing transistors are arranged, each voltage stabilizing transistor is connected with one induction electrode, the grid electrode of each voltage stabilizing transistor is connected with a voltage stabilizing control line, the first electrode of each voltage stabilizing transistor is connected with the corresponding induction electrode, and the second electrode of each voltage stabilizing transistor is connected with a voltage stabilizing driving line; one control signal line inputs an effective level, the other control signal lines input an ineffective level, one voltage stabilization control signal line inputs an ineffective level, the other voltage stabilization control signal lines input an effective level, and the voltage stabilization driving line is configured to output a voltage stabilization signal. A voltage stabilizing signal can be input into the induction electrode, so that the signal on the induction electrode is stable, the induction electrode is prevented from being impacted by other signals or influencing other signals when being suspended, mistaken touch and poor display are prevented, and the touch stability is improved.

The invention belongs to the field of medical care equipment, and particularly relates to an airflow sensor and a vital capacity detector. The airflow sensor comprises a shell, a magnetic field generating device and a coil film. Wherein the shell is made of a non-ferromagnetic material; and an air flow channel with a square section is formed on the inner side of the shell. The shell comprises an upper substrate and a lower substrate which are parallel to each other. The magnetic field generating device is used for generating a fixed magnetic field with the magnetic field intensity changing along with the distance between the upper substrate and the lower substrate of the shell. The coil film comprises a flexible base film and a coil printed on the base film. The coil film is located between the upper substrate and the lower substrate. When gas flows through the gas flow channel in the shell, the coil film vibrates up and down, and then induction signals with the mapping relation with the gas flow intensity are generated at the two ends of the coil. The problems that a sensor part of an existing vital capacity detector cannot be self-powered, and the detection precision is prone to being affected by factors such as environment humidity are solved.

The invention discloses a hydrogel electrochemical strain sensor and a preparation method and application thereof, belongs to the technical field of ionic conductive hydrogel, and provides a hydrogel electrochemical strain sensor which is prepared from a PET substrate, a working electrode, a counter electrode, a reference electrode and ionic conductive hydrogel. The working electrode, the counter electrode and the reference electrode are sequentially positioned on the PET substrate; the tops of the working electrode, the counter electrode and the reference electrode are covered with the ionic conductive hydrogel. By utilizing the excellent ionic piezoelectric effect and good mechanical property of the ionic conductive hydrogel, the prepared hydrogel electrochemical strain sensor has the characteristics of low noise, stable signal, high sensitivity, high response and recovery speed and the like; the method shows huge application potential in the low-force detection fields such as human body pulse wave monitoring and artificial throats.

This utility model discloses a liquid crystal panel moving testing fixture, belonging to the field of liquid crystal panel testing technology. The fixture includes a mounting platform, a guide rail fixed to the mounting platform, a probe holder slidably mounted on the guide rail, a removable elastic probe inserted into the probe holder, a clamping block that elastically presses a flexible circuit board against the rear end of the probe, and a mounting platform for supporting and fixing the liquid crystal panel. The front end of the probe is pressed against the detection point of the liquid crystal panel, and the other end of the flexible circuit board is connected to an external testing circuit via a piano cover, forming a quickly replaceable testing path. This utility model utilizes the cooperation between the elastic probe and the clamping block to achieve a highly reliable, low-contact-resistance electrical connection; the probe holder as a whole can move along the guide rail to adapt to different testing positions; the pluggable probe structure facilitates maintenance, significantly improving testing efficiency and reducing testing costs.

This invention discloses a differential VGA signal decoding and display device, relating to the display field. It includes a signal input module, an ESD protection module, a differential receiving module, a synchronization separation module, an image decoding driver module, a display module, an audio processing module, and a control module. These modules are interconnected and work together to decode, process, and display differential VGA signals. This differential VGA signal decoding and display device solves the problems of short transmission distance, weak anti-interference capability, limited resolution, and high power consumption associated with traditional VGA interfaces. It also achieves full compatibility with traditional VGA devices, integrating audio processing, local playback, intelligent signal enhancement, and remote monitoring and management functions. It achieves reliable conversion from analog to differential signals, supports high-definition display, and has a transmission distance of up to 50 meters, while maintaining full compatibility with traditional VGA devices. This technology is particularly suitable for professional fields such as industrial automation and medical imaging, meeting the diverse display and intelligent operation and maintenance needs of professional scenarios.

The present invention provides an emergency communication coordination method, device and storage medium based on Beidou space-time data, the method comprising: setting permission access to the Beidou communication network, and performing identity identification on user terminals communicating through the Beidou communication network; determining a target emergency communication channel according to the identity identification result of the user terminal, and allowing the user terminal to perform emergency communication through the target emergency communication channel; obtaining Beidou space-time data of all user terminals performing emergency communication, and when it is determined that the target user terminal has signal attenuation, providing communication coordination services to the target user terminal based on the Beidou space-time data. The present invention monitors the signal strength of the user terminal accessing the emergency communication, and carries out emergency coordination communication services according to the Beidou space-time data corresponding to the user terminal when the signal is attenuated, so as to ensure the stability of the signal in the emergency communication scenario.

The utility model discloses an anti-drop waterproof mushroom head antenna, which comprises a radio frequency connector, a radiation antenna oscillator, an injection molding shell and an injection molding sheath, the radiation antenna oscillator is arranged at the upper end part of the radio frequency connector, and the lower end part of the radiation antenna oscillator is convexly provided with a first welding pin; a first welding pin is arranged at the upper end of the radio frequency connector in a protruding mode, a second welding pin is arranged at the upper end of the radio frequency connector in a protruding mode, the first welding pin and the second welding pin are fixedly connected through welding, the appearance of the injection molding shell is of a cone structure, the radio frequency connector and the radiating antenna oscillator are embedded in the injection molding shell, and an opening groove is formed in the middle of the lower end wall of the injection molding shell in a concave mode. The lower end portion of the radio frequency connector is located in the open groove, the injection molding sheath wraps the peripheral wall of the injection molding shell, and the injection molding shell and the injection molding sheath are both integrally formed through injection molding. According to the technical scheme, the anti-falling performance and the waterproof performance of the mushroom head antenna can be greatly improved, and the mushroom head antenna is smooth in appearance, attractive, elegant and high in practicability.

The invention discloses an SERS (Surface Enhanced Raman Scattering) flexible sensor based on dual-ion modification as well as a preparation method and application of the SERS flexible sensor, and belongs to the technical field of biomedical detection. A bacterial cellulose membrane (BCM) is used as a base material, cation modification (QBCM) is carried out through glycidyl trimethyl ammonium chloride (EPTMAC), anion modification (TABCM) is carried out through tannic acid (TA), a functional substrate with asymmetric charge distribution and a porous structure is constructed, then Ag NPs are loaded on the modified base material through an in-situ reduction method, the QBCM-coated AgNPs and TABCM-coated AgNPs dual-ion active substrate is formed, and the AgNPs / TABCM-coated AgNPs dual-ion active substrate is used for preparing the composite material. The SERS flexible sensor is integrated through a layer-by-layer self-assembly (LbL) technology; the SERS flexible sensor can realize specific enrichment and synchronous detection of anionic kynurenic acid (KYNA) and cationic spermine (Spm) in urine, and is low in detection limit and good in reproducibility.

The application discloses an electric control device and a heating and ventilation equipment, and relates to the technical field of electric control devices, and aims to improve stability and safety.

The invention discloses a fire extinguishing bomb hanging mechanism for a heavy-load unmanned aerial vehicle, relates to the technical field of unmanned aerial vehicle application and fire fighting equipment, and aims to solve the problems that an existing fire extinguishing bomb hung on the unmanned aerial vehicle is poor in stability, single in throwing control, poor in adaptability and insufficient in safety. The system comprises a heavy-load unmanned aerial vehicle, a fire extinguishing bomb, a bomb loading cabin and an electric control system, the bomb loading cabin is mounted at the bottom of the heavy-load unmanned aerial vehicle, comprises bomb cabin upper and lower layer frames, a steering engine, a motor, a cabin door, a pin pulling rod and the like, and is used for fixing and delivering fire extinguishing bombs; the electric control system is electrically connected with each component, controls actions and interacts data; the mechanism is stable in mounting, accurate in bomb dropping, wide in adaptation, high in safety, capable of improving the fire extinguishing efficiency and reliability of the unmanned aerial vehicle and suitable for complex fire operation.

The invention provides a recorder sharing auxiliary positioning method and system. The recorder sharing auxiliary positioning system comprises a recorder positioning module, a recorder satellite processing module, a server time-sharing sharing module and a recorder sharing auxiliary positioning module. The output end of the recorder positioning module is connected with the input end of the recorder satellite processing module, the output end of the recorder satellite processing module is connected with the input end of the server time-sharing module, and the output end of the server time-sharing module is connected with the input end of the recorder sharing auxiliary positioning module. The output end of the recorder sharing auxiliary positioning module is connected with the input end of the recorder positioning module; in the absence of a satellite ground station and the Internet, the recorder can perform auxiliary positioning by sharing the geographic position and the detection time of the Beidou satellite in a time-sharing manner, so that the positioning speed and the positioning efficiency of the recorder are improved, the recorder can be normally used by a user in a closed network environment, and the positioning accuracy is relatively high.

The invention relates to a multidirectional mechanical rocker type control device, which comprises a shell, a control handle and four groups of trigger switch assemblies, and the four groups of trigger switch assemblies are uniformly distributed around the control handle in four directions. The four groups of trigger switch assemblies are close to the direction of the control handle under the action of elastic pre-tightening force, and the control handle is centered and balanced. The control device further comprises a pressing switch assembly installed on the shell, and the pressing switch assembly is located in the axial moving direction of the control handle. Wherein the control handle swings to trigger one of the trigger switch assemblies, or the control handle presses to trigger the pressing switch assembly. A pressing switch assembly is arranged in the axial direction of the control handle, a fifth independent signal can be triggered under sliding control of the control handle, and therefore independent control over five paths of signals is achieved. In addition, the trigger switch assembly and the push switch assembly both adopt mechanical trigger structures, so that the whole signal is stable and the reliability is high.

The invention discloses a ring network system for a well drilling site and an implementation method thereof, the ring network system comprises a redundant PLC system, at least two switch slave stations and at least two types of network lines, each switch slave station is connected with different types of well drilling equipment control systems, and the network lines are connected with the redundant PLC system. All the switch slave stations and the redundant PLC system are connected through each type of network lines to form a corresponding type of looped network, and the redundant PLC system is used for controlling the looped network system to be switched from the current looped network to the other type of looped network when it is detected that a node communication fault occurs in the connected looped network. The network stability and the system safety of a drilling site are improved, and stable operation of site construction is guaranteed.

A drum collector ring precision conductive friction pair test device belongs to the technical field of new energy engineering machinery vehicle cable drums, and comprises a height-adjustable slide block mechanism, a V-shaped positioning block, a precision electronic scale and a direct current resistance tester. The height-adjustable sliding block mechanism comprises a base and a vertical guide sliding block pair arranged on the base. And a circuit board brush wire mounting plate which transversely extends out is fixed on a sliding block of the guide sliding block pair. And the V-shaped positioning block for placing the conducting ring is placed on the precision electronic scale. And two probes of the direct current resistance tester are respectively used for connecting the detection end of the circuit board and the conducting ring. The vertical position of the sliding block is controlled to change the contact pressure between the circuit board brush wires on the two sides and the conducting ring below the circuit board brush wires, the pressure values are displayed through the precision electronic scale, and meanwhile the direct-current resistance tester is used for detecting contact direct-current resistance values corresponding to different pressure values between the circuit board brush wires and the conducting ring. And finally selecting the optimal contact pressure to be matched with the direct-current resistance value.

The invention discloses an HPLC (High Performance Liquid Chromatography) upgrading bottom plate for PLC (Programmable Logic Controller) module upgrading, a dual-mode upgrading system and an upgrading method, and relates to the technical field of PLC module production. The HPLC upgrading bottom plate comprises a signal interface connector and a plurality of upgrading modules for mounting a PLC module; the bottom plate is mainly used in cooperation with the control panel and interacts with the control panel through two connection modes of an RF signal and a PLC wired signal, the module product upgrading function is achieved, a plurality of modules can be connected to a control end through the HPLC upgrading bottom plate in a wired mode at the same time to be upgraded, the module upgrading efficiency is improved, and through arrangement of an isolation belt, the module upgrading efficiency is improved. The isolation degree of the wireless signal communication antenna is enhanced, so that signals are more stable, the failure rate is reduced, and the transmission efficiency is improved; according to the dual-mode upgrading system and the upgrading method, whether upgrading succeeds or not is verified without upgrading retest, so that the upgrading process of the PLC module is more controllable, the upgrading quality of the PLC module is improved, loss caused by retest is reduced, the time period caused by retest is shortened, and the production benefit is improved.

The utility model provides a small-area PCB antenna used for a TWS earphone, comprising a PCB substrate, the top layer and the bottom layer of the PCB substrate are respectively provided with a copper foil layer, the PCB substrate is provided with a metal via hole penetrating through the top layer and the bottom layer of the PCB substrate, the PCB substrate is provided with an antenna conductor, the antenna conductor comprises two sections of wires, and the two sections of wires are arranged on the PCB substrate. The antenna conductor is arranged at the top layer position of the PCB substrate, the antenna conductor is electrically connected through a metal via hole, and the PCB substrate is also provided with a resonance feed circuit; the antenna conductor is provided with two wiring sections, one wiring section is a bent wiring section, and the other wiring section is a linear wiring section. According to the utility model, the Bluetooth antenna is directly formed on the PCB, and compared with other Bluetooth antennas with the same structure in the market, the Bluetooth antenna has the characteristics of small area, low cost, stable signal and good parameter consistency.

The invention discloses a multi-polarization adaptive satellite antenna, belonging to the technical field of satellite antennas, and is a multi-polarization adaptive satellite antenna; the multi-polarization adaptive satellite antenna, by starting a second motor, drives a rotating rod to rotate, and the rotating rod drives a cleaning plate to rotate to scrape and clean the surface of a satellite antenna body, so that rainwater, snow, fallen leaves and other dust on the surface of the satellite antenna body can be scraped and dropped; at the same time, a first driven rod is driven to rotate by a first synchronous belt, and a first protrusion is driven to rotate and contact with a first contact block; in cooperation with a first spring, a nozzle repeatedly sprays the surface of the satellite antenna body, so that the surface of the satellite antenna body is cleaned more cleanly and quickly, and the satellite antenna can optimize the reception of signals; regular cleaning can reduce the degree of corrosion and wear, and extend the service life of the antenna; a clean antenna surface is helpful to maintain stable signal reception, and reduce system failures caused by signal fluctuations.

This utility model relates to the field of Ethernet connector technology and discloses a simple and efficient Ethernet connector with a raised dot structure. It includes a plastic shell, a connecting plate fixedly connected to the top of the plastic shell, a fixing tube fixedly connected to the rear end of the plastic shell, mounting protrusions fixedly connected to the surface of the fixing tube, an inner rounded corner fixedly connected to the top of the fixing tube, and a mounting clip fixedly connected to the front end of the inner rounded corner. This utility model modifies the clip structure of the plastic shell by adding an inner rounded corner, making the stress at the deformation point more even, simplifying the structure, and achieving a simple, efficient, and durable clip with lower mold costs. By adding a raised dot structure to the shell, the insertion and extraction force is increased, the gap is reduced, and a stable signal is achieved. This utility model avoids the hidden dangers of complex structures that are prone to breakage and insufficient insertion and extraction force, thus improving the service life of the connector.

The application discloses a kind of high resilience self-repairing polyurethane elastomer and preparation method thereof.The preparation method includes the pre-polymerization of secondary amine end-capped polyether amine and diisocyanate in organic solvent, to obtain isocyanate end-capped prepolymer;Diamine and / or hydrazine chain extender are added to the prepolymer to carry out chain extension reaction, to obtain chain extension product containing urea bond and hydrazine bond;Trifunctional isocyanate crosslinking agent is added to the chain extension product to carry out crosslinking reaction, and after reaction to gelation critical point, it is formed by pouring into shape.The application constructs the interpenetrating double network structure of high-density multiple hydrogen bond physical network and dynamic covalent bond chemical network interpenetration, so that the resilience of elastomer reaches 92.7%~95% under 100%~300% strain, and the self-repairing efficiency reaches more than 72% after 12h repair at room temperature without external stimulation, realizes the synergistic improvement of high resilience, high tensile and high-efficiency self-repairing performance, and can be used in flexible electronic devices, wearable sensors and flexible substrates in biological medical detection equipment.

This application relates to the technical field of vehicle signal testing, and in particular to a signal conditioning circuit, conditioning device, and testing system. The circuit includes a first processing module, a first protection module, a second processing module, a second protection module, a power supply module, and a third protection module. Specifically: the first processing module modulates the initial PWM signal output from the NI chassis into a target PWM signal that conforms to the voltage acquisition range of the ECU; the first protection module provides overvoltage protection for the first processing module; the second processing module converts the control signal output from the ECU into a target control signal that conforms to the voltage acquisition range of the NI chassis; the second protection module provides overcurrent protection for the second processing module; the power supply module provides the corresponding operating voltages for the first and second processing modules; and the third protection module provides overvoltage and overcurrent protection for the power supply module. The solution of this application can improve the stability of digital signals during HIL testing.

The present invention discloses a light-emitting diode driving system based on power line transmission signal, which is applied to drive LED light string to emit light, and at least includes a switch unit, a control unit, a main power supply and a secondary power supply, wherein the switch unit includes a main input terminal, a secondary input terminal, an output terminal and a controlled terminal. When the control unit is in working state, the switch unit is turned on. When the control unit outputs a high-level signal to control the switch unit to be turned on, the main power supply outputs a main DC power supply to the switch unit, and when the control unit outputs a low-level signal to control the switch unit to be turned on, the secondary power supply outputs a secondary DC power supply to the switch unit; under the control of the control unit, the switch unit outputs a light-emitting driving signal composed of a main and secondary DC power supplies to the light-emitting diode module light string to maintain stable light emission. The driving ability of the light string light signal on the light string light effect can be improved, so that the light string light effect is more stable.

The utility model relates to the technical field of connectors, in particular to an HDMI (High Definition Multimedia Interface) connector female socket, which comprises an outer shell (100), an insulating main body (200) and a plurality of terminals (300), a shielding shell (400) is arranged above a first surface of the outer shell (100), and a shielding sheet (500) is arranged below a second surface, opposite to the first surface, of the outer shell (100). According to the utility model, the shielding shell is arranged above the first surface of the outer shell, the shielding sheet is arranged below the second surface of the outer shell, and the shielding shell with the electromagnetic interference shielding function and the shielding edge are added on the basis of the metal shell with the electromagnetic interference shielding function, so that the shielding effect is better, and the signal is more stable.

The invention relates to the technical field of fruit picking, and particularly discloses an intelligent agricultural fruit picking device which comprises a handheld rod, a vibration motor is fixedly connected to the outer surface of the upper end of the handheld rod, an occlusion part is arranged at the upper end of the vibration motor, and the occlusion part can occlude and fix branches of a fruit tree. Therefore, the vibration strength can be automatically adjusted according to the thickness of the branches, damage to fruit trees is reduced on the premise that the fruits are shaken off, the thickness of the fruit tree branches is detected in real time through the measuring part, the strength of the vibration motor is automatically adjusted, it is ensured that the fruits are shaken off efficiently, and meanwhile damage to the fruit tree branches is reduced; double optimization of picking efficiency and tree protection is achieved, the picking efficiency and fruit tree protection are both considered, the design that a driving motor is matched with a threaded rod to drive a lower closing plate to move is adopted, the self-locking function is combined, the device can adapt to branches of different thicknesses, stable meshing is achieved, vibration force is effectively transmitted, and the picking efficiency is improved.

The invention provides a network control-based control system and method for a wind power cut tobacco feeder, and the system comprises a rolling and packaging workshop wind power cut tobacco feeding module, a cut tobacco production and storage module and a control unit, and the control unit is in network connection with the rolling and packaging workshop wind power cut tobacco feeding module and the cut tobacco production and storage module. The PLC of the rolling and packing workshop wind power cut tobacco feeding module is in network connection with the PLC of the cut tobacco production and storage module, a communication program is written on the PLC of the rolling and packing workshop wind power cut tobacco feeding module and used for sending a material supply signal of a cigarette making machine, and the material supply signal is transmitted to the PLC of the cut tobacco production and storage module through a network. A communication program is written on the PLC of the cut tobacco production and storage module and used for receiving a material supply signal sent by the PLC of the wind power cut tobacco feeding module of the wrapping workshop, converting the material supply signal into a control signal and controlling start and stop of a wind power cut tobacco feeder of the cut tobacco production and storage module. Network signals are adopted to control the wind power cut tobacco feeder, and compared with traditional sensor signals, the signals are more stable.

The invention provides a device and a method for detecting freshness of various meats based on a gas sensor, which are used for solving the technical scheme that the existing freshness detection device can only detect a single meat. The detection device comprises a shell, an air pump and an air chamber are arranged in the shell, a collection port, a camera, an indicator light, a detection button and a display screen are arranged on the shell, the air pump is communicated with the collection port and an air inlet of the air chamber through air pipes, the detection button is arranged on the air pump, an air sensor array is arranged in the air chamber, and an electromagnetic valve is arranged at an air outlet of the air chamber. The camera, the indicating lamp, the detection button, the display screen, the air pump, the electromagnetic valve and the gas sensor array are all connected with the single-chip microcomputer. By adding the micro camera and utilizing the corresponding meat type identification model, various types of meat can be detected without manually selecting the types of meat to be detected, so that one-to-many detection is realized, and the detection range and the detection accuracy are expanded; and the whole size is easy to carry and is more suitable for daily use.

The application discloses a connector and a combination thereof, which are used for connecting a plurality of mating connecting components arranged in an array, and comprise: a fixed shell fixed on a circuit substrate, an accommodation cavity being formed in the fixed shell; a movable shell installed in the accommodation cavity in a manner that can be floated and shifted along a plane direction parallel to the circuit substrate, the movable shell having a plug hole for plugging and unplugging the mating connecting components; a plurality of groups of power terminal units arranged in an array on the circuit substrate, the power terminal units elastically supporting the movable shell in the accommodation cavity; each group of the power terminal units comprising at least two elastic terminals arranged in a symmetrical manner, the elastic terminals having a conductive main body for current flow, and at least one pair of elastic contact arms provided on the conductive main body and used for electrically connecting the mating connecting components. The connector claimed in the application can increase the current flow area and the contact area with the mating connecting components in a space with limited height, and can reduce the temperature rise.

The present invention provides a vibrator assembly with a centering structure, including a plate assembly and a weight assembly, wherein the hammer body of the weight assembly is connected to the plate assembly by means of an elastic connector, and the two ends of the piston rod of the weight assembly are fixedly connected to the plate assembly by means of end covers; the elastic connector includes a centering spring, a centering spring seat and a centering spring seat limit seat, and a centering spring mounting hole is provided in the hammer body, and the centering spring is tightly matched with the centering spring mounting hole of the hammer body through tolerance matching. The closed box-type structure design of the present invention has strong torsion resistance and sufficient rigidity, which makes the overall performance of the vibrator assembly more stable, while saving space, greatly reducing the length and width of the whole vehicle, which is conducive to urban exploration. The mechanical structure is more stable and stronger, and compared with airbags, it has longer wear resistance and longer service life.

The utility model discloses an injection oil cylinder for an injection molding machine, which comprises an oil cylinder and a piston rod, and the piston rod can extend into the oil cylinder and can move along the central axis of the piston rod in the oil cylinder; end covers are arranged at the two axial ends of the oil cylinder, so that a sealed oil cavity is formed in the oil cylinder; any end cover is connected with a displacement sensor, and the displacement sensor comprises a sensor connecting rod capable of extending into the oil cylinder; moreover, a position magnetic block capable of being matched with the sensor connecting rod is arranged at the end, close to the sensor connecting rod, of the piston rod, the position magnetic block and the piston rod move synchronously, and the displacement sensor outputs displacement signals of the piston rod by detecting magnetic field changes caused by movement of the position magnetic block. According to the utility model, the displacement sensor is directly integrated on the end cover of the injection oil cylinder, the structure is compact, the size of the whole device is reduced, and the installation space is saved; the device is compact in structure, high in measurement precision, strong in anti-interference capability and convenient to install and maintain.

The invention relates to a metal wiring structure for an MEMS inertial device, which comprises a first isolation layer, a first metal layer, a second isolation layer and a second metal layer which are sequentially stacked on a substrate, each of the first isolation layer and the second isolation layer comprises a plurality of isolation blocks, and two adjacent isolation blocks are arranged at intervals. The first metal layer and the second metal layer each comprise a plurality of metal blocks, and every two adjacent metal blocks are arranged at intervals and electrically connected through a wire. The invention further provides the MEMS inertial device and a metal wiring method for the MEMS inertial device. According to the invention, the isolation layer is designed into a form of a plurality of isolation blocks, so that the technical problem of large stress caused by the isolation layer grown on the whole surface in the prior art can be solved, and the wafer is prevented from deformation or warping in the technological process, thereby improving the bonding performance and performance indexes of the device; all the metal layers are divided into small blocks and connected, all the metal layers and the substrate are connected through the contact holes and are grounded or fixed in point positions, and it is guaranteed that signals of all the metal wires are stable.