411 results about "Parallel plate" patented technology

The invention provides a device and method for testing the reliability of a power sensor, and the device comprises a magnetic field generation unit which is used for providing an alternating current for a Helmholtz coil through a power frequency current source, and generating a controllable magnetic field; the electric field generating unit is used for providing a high-voltage direct current or power frequency alternating current power supply for the parallel-plate capacitor through a high-voltage generator to generate a uniform electric field; the tested unit is used for providing a standard excitation signal through a standard source matched with the to-be-tested sensor, simulating an input condition of the to-be-tested sensor under an actual working condition and collecting output data of the to-be-tested sensor; and the control unit is used for setting test parameters, generating a control instruction according to the test parameters and generating a test result according to the output data. According to the device and the method, by simulating a strong magnetic field and a strong electric field environment and combining application of various measured parameters and an automatic control system, the reliability evaluation requirement of the sensor under the actual working condition is fully met.

The invention discloses a self-constrained transverse extension ion optical lens device, and belongs to the technical field of cluster ion lens devices. The invention discloses a self-constrained transverse extension ion optical lens device which comprises a cuboid vacuum cavity and an ion lens device. The ion lens device comprises an entrance slit of an ion optical lens, an exit slit of the ion optical lens and an electrode group; the electrode group comprises a conical plate electrode group and a parallel plate electrode group; a crack at the head end of the conical plate electrode group forms an inlet slit of the ion optical lens, the tail end of the conical plate electrode group is connected with the head end of the parallel plate electrode group, and a crack at the tail end of the parallel plate electrode group forms an outlet slit of the ion optical lens; one side of the cuboid vacuum cavity is provided with a cluster beam generation device outlet, and the ion lens device is arranged in the cuboid vacuum cavity. Under the condition that the beam density in the prior art is kept unchanged, the cluster beam intensity entering and leaving the ion optical part is increased, and the cluster yield is improved.

Electrical connector assembly devices, systems, and methods including a demating device configured to separate a first connector and a second connector of an electrical connector assembly. The demating device includes a housing body, a drive assembly including: a drive lever, a trigger configured to push against the drive lever, a drive assembly rod, and a spring mounted around the drive assembly rod; and a demating assembly including: a movable plate having at least two sides, wherein each of the two sides includes at least two prongs; a stationary plate having at least two sides, wherein each of the two sides includes at least two prongs; and a rotary actuator configured to rotate the movable plate.

The invention relates to the technical field of acoustic function material structure design, in particular to a Kresling origami-based local resonance phononic crystal, which comprises a substrate and a vibration reduction array embedded on the substrate, the vibration reduction array comprises a plurality of unit cell structures arranged in an array. Each unit cell structure comprises at least two spiral Kresling paper folding structures, and lead injection holes penetrating through the Kresling paper folding structures are formed in the Kresling paper folding structures. The substrate is one of an Archimedes spiral parallel plate, a chessboard embedded paper-cut, a double-layer Miura origami or a bistable shell based on a shape memory polymer; the material of the Kresling origami structure is lead, the density is 11600 kg / m < 3 >, the elastic modulus is 20.80 GPa, and the Poisson ratio is 0.369. According to the local resonance photonic crystal provided by the invention, through the unique geometric characteristics, a remarkable vibration band gap is generated in a low-frequency band, and vibration propagation in a specific frequency band is effectively inhibited; according to the Kresling paper folding structure, diversified vibration band gap configuration can be achieved by adjusting the folding angle and the number of layers.

The utility model provides an IPD-integrated bulk acoustic wave filter and wireless communication equipment, and relates to the technical field of semiconductors. The bulk acoustic wave filter integrated with the IPD comprises a substrate, an acoustic wave reflection structure arranged on the substrate, a film bulk acoustic wave resonator, a parallel plate capacitor and a planar inductor, the film bulk acoustic wave resonator is located above the acoustic wave reflection structure, and the planar inductor is located between the film bulk acoustic wave resonator and the parallel plate capacitor. And the thin film bulk acoustic resonator and the parallel plate capacitor are electrically connected with each other. According to the bulk acoustic wave filter integrated with the IPD, the IPD technology is integrated into the BAW technology, and the integration level and the area utilization rate of the filter are greatly improved. A resonance circuit of the IPD is designed to generate an extremely wide passband, then the bulk acoustic wave resonators are designed, and the frequency of the bulk acoustic wave resonators falls on the two sides of the passband to improve roll-off of the filter, so that the wide passband can be generated, and the good out-of-band rejection effect can be achieved. In addition, by adopting the planar inductor, the technological process of the inductor structure is greatly simplified.

The invention relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom layer dielectric substrate, a first excitation port and a second excitation port are arranged at two ends of the bottom layer dielectric substrate; the top-layer dielectric substrate comprises a +-shaped dielectric covering layer arranged at the top of the bottom-layer dielectric substrate; two ends of the parallel plate slot waveguide are respectively connected with the first substrate integrated waveguide horn and the second substrate integrated waveguide horn; two ends of the first waveguide transition structure are respectively connected with the first excitation port and the first substrate integrated waveguide horn; two ends of the second waveguide transition structure are respectively connected with the second excitation port and the second substrate integrated waveguide horn; according to the invention, large-range beam scanning including backward end radiation can be realized, high-gain single-beam scanning is maintained, the antenna has the characteristics of simple structure, easy integrated processing, high gain and full coverage of the upper half space, and the performance of a millimeter wave wireless communication system is greatly improved.

A method for quantitative evaluation of gas seal performance of an annular blowout preventer is provided. The equivalent average contact pressure of the tubing-rubber core sealing surface is acquired based on the principle of equivalent seal contact energy, the tubing-rubber core microscopic contact state is simulated by using elastic-plastic normal flattening contact between the rigid smooth flat plate and the uniformly distributed spherical micro-convex body rough plate, the actual contact area of the single spherical micro-convex body under the equivalent average contact pressure of tubing-rubber core sealing surface is acquired, and then the circumferential width and average height of the microscopic leakage channel at the tubing-rubber core contact interface are acquired, the gas leakage volume rate of gas through the tubing-rubber core interface is acquired by using the parallel plate model in hydrodynamics, and the gas leakage volume rate is compared to the allowable gas leakage volume rate.

A plasma processing apparatus includes a processing container having a processing space where a substrate is disposed; a plasma generation unit including a first electrode and a second electrode which are provided facing each other and are configured as parallel plate electrodes, and having a plasma generating space formed between the first electrode and the second electrode; a radio-frequency power supply unit configured to form a radio-frequency electric field between the first electrode and the second electrode; a gas supply unit configured to supply a processing gas for plasma generation in the plasma generating space; a plasma introduction unit configured to introduce the plasma generated in the plasma generating space to the processing space; and a heat transfer member including an insulator and provided between the first electrode and the second electrode. Plasma processing is performed on the substrate by the plasma introduced to the processing space.

A modular structure accommodating structured sorbent in a parallel plate arrangement for the separation of gases, such as the removal of CO2 from air in a direct air capture process is provided. The modular structure includes individual units which act as support structures for the sorbent, and the individual units can be assembled into a larger bed of arbitrary dimensions. The sorbent includes parallel plates through which fluid can flow in many directions (at least two perpendicular directions), with additional features in the support structure that mitigate bypassing effects and reduce parasitic thermal mass. A method for integrating sensors into the bed to understand the performance of the bed in gas separation while minimizing damage to the structure or disruption to performance is also provided.

The invention relates to the technical field of semiconductors, and discloses a glass substrate structure, a preparation method and a packaging method of the glass substrate structure, an electronic component and an integrated circuit. The conductive interconnection channel penetrates through the glass core plate; the parallel plate capacitor and the first rewiring structure are positioned on the first surface of the glass core plate; wherein the parallel plate capacitor is an aluminum-based capacitor; the second re-wiring structure is positioned on the second surface of the glass core plate; wherein the second surface and the first surface are two opposite surfaces on the glass core plate; the second redistribution structure is electrically connected with the first redistribution structure through the conductive interconnection channel. The glass substrate structure has the advantages that the glass core plate is used for providing basic support, the aluminum-based capacitor is used for simplifying the process and reducing the cost, signal distribution and transmission are achieved through the first rewiring structure and the second rewiring structure, and finally based on cooperation of all the components, the glass substrate structure keeps excellent electrical performance, and meanwhile the electrical performance of the glass substrate structure is improved. And the manufacturing process is simpler and the yield is higher.

The invention discloses a terahertz MEMS composite membrane switch based on a glass substrate, and belongs to the field of terahertz wireless communication equipment. The MEMS switch is of a three-dimensional structure and sequentially comprises a metal ground, a glass substrate, a coplanar waveguide signal transmission line, a silicon nitride dielectric layer and an MEMS composite film from bottom to top. The MEMS composite film is equivalent to a clamped beam structure, and an anchor area of the MEMS composite film is connected with a signal ground of the CPW; the composite film is composed of a gold film and a silicon dioxide film, the composite film, a silicon nitride dielectric layer below and a CPW signal line form a parallel plate capacitor, bias voltage is loaded through a direct-current voltage signal transmission line connected with an anchor area, the height of the MEMS composite film is changed, then the plate capacitance value is changed, and switching between the on state and the off state of a transmission signal is achieved. The MEMS switch of the composite film has the advantages of low insertion loss and high isolation in terahertz frequency band application, and can be applied to radio frequency devices such as phase shifters, attenuators, reconfigurable filters and the like.

The invention provides a sampling device for shale gas geological exploration, which structurally comprises a movable base, a positioning block, a vertical rod, a height adjuster, a collecting tank and a sampler, and is characterized in that a parallel plate added on the surface layer of the movable base is used as a basis, and four electrifying blocks are used for electrifying a calibration ring on the edge of a vertical through groove; then the calibration ring can scan the edge of the detection hole of the shale through multiple groups of infrared calibration lenses on the circular ring, so that the circle center of the vertical through groove can be aligned with the circle center of the hole of the shale, and if errors exist, error information is fed back to the movable base through an electric signal, so that the movable base can move in a small range according to the error range; the position adjusting effect is achieved, it is ensured that the sampler can be accurately embedded into the hole of the shale in the vertical direction, damage to the edge of the hole of the shale caused by position errors is prevented, and the stability of shale gas sampling is further improved.

This invention discloses a three-element leaky wave antenna array structure based on a dielectric ridge parallel plate waveguide, comprising: S1, designing a three-element array structure based on the coupling characteristics of the dielectric ridge parallel plate waveguide, wherein the two-port array antenna is fed by probes in parallel; S2, determining the slot design of the three elements according to the pattern product theorem and the relationship between slot size and leakage, thereby designing a scanning beam that meets the requirements of narrow beamwidth and high gain. This invention is a leaky wave antenna array structure with narrow beamwidth and high gain characteristics proposed to meet the requirements of high signal strength and strong anti-interference in long-distance point-to-point communication systems. This antenna can provide better directivity and higher communication quality, while ensuring that the antenna has the advantages of compact structure and small size, thus it can be applied to wireless power transmission systems such as satellite communication systems, radar systems, and the Internet of Things.

An antenna apparatus described herein includes a first reflector element that comprises a first nonresonant waveguide cavity that is partially bounded by a first parabolic reflector surface. The apparatus optionally includes additional reflector elements arranged in parallel with the first reflector element, where the additional reflector elements include corresponding nonresonant waveguide cavities that are partially bounded by corresponding reflector surfaces. The antenna apparatus is configured to emit an electromagnetic signal based upon electromagnetic signals reflected by the one or more parabolic reflector surfaces and output by the one or more reflector elements. The antenna apparatus may conversely be employed to receive an electromagnetic signal.

The invention provides a coupling stiffness disturbance type MEMS modal localization accelerometer, which is characterized in that a core sensing unit adopts a double-tuning-fork resonator parallel arrangement configuration, and an offset weak coupling resonance system is designed and constructed through the difference of equivalent support stiffness parameters. The outer tuning fork resonator is directly connected with the sensitive mass block, the inner tuning fork resonator realizes full-constraint fixation through a base anchor point, and the outer tuning fork resonator and the inner tuning fork resonator form a double-tuning-fork electrostatic weak coupling resonant structure through an electrostatic coupling parallel plate, so that energy transfer between resonant units is realized. The mechanism of the accelerometer is different from that of a traditional rigidity or quality disturbance mode localization sensor, when the accelerometer is subjected to the action of external acceleration, the inertial micro displacement of the accelerometer is converted into coupling rigidity change of the weak coupling resonance system, the resonance unit amplitude ratio of the weak coupling resonance system is detected through an external circuit, and the detection accuracy is improved. Therefore, the detection of coupling rigidity disturbance is realized, and finally the high-sensitivity detection of the measured acceleration is realized.

The utility model discloses a supercharger base clamping tool for a vertical lathe, which is simpler to process after clamping and saves the cost of a cutter. A supercharger base clamping tool for a vertical lathe machine tool comprises a tool frame, the tool frame comprises a square bottom plate, a mounting cylinder with a square cross section is arranged on the bottom plate, two layers of connecting plates are flatly arranged on the four inner walls of the mounting cylinder respectively, the two layers of connecting plates correspond to two parallel plates of a supercharger base, and the two layers of connecting plates correspond to the two parallel plates of the supercharger base. Vertical tool screw holes are respectively formed in the two layers of connecting plates, and tool pin holes are respectively formed in the outer side ends of the two layers of connecting plates; the two parallel plates of the supercharger base are provided with base screw holes, the base screw holes are fixedly connected with the tool screw holes in the corresponding connecting plates through screws, the four corners of the supercharger base are provided with base pin holes, the base pin holes are in pin connection with the tool pin holes in the outer side ends of the corresponding connecting plates, and vertical clamping of the supercharger base is achieved.

The present invention discloses a device and method for disassembling and assembling a starter metering valve, which relates to the field of aircraft engine parts assembly. The purpose is to reduce the difficulty and risk of disassembling and assembling the starter metering valve and improve work efficiency. The technical solution adopted by the present invention is as follows: the device for disassembling and assembling the starter metering valve includes a base plate, a positioning seat fixedly arranged on the base plate, and a pushing mechanism. The positioning seat includes two mutually parallel plates, and the two plates are respectively provided with a first slot and a second slot. The pushing mechanism includes a push rod, and the pushing direction of the push rod points to the second slot and passes through the first slot and the second slot. The bushing of the starter metering valve is placed in the first slot and the second slot, and then the starter metering valve is disassembled and assembled. The outer side of the bushing of the starter metering valve has a ridge structure. The bushing is clamped in the positioning seat, so that the bushing can be locked by the positioning seat in the pushing direction of the push rod. The pushing mechanism pushes the valve, and the stroke is easy to fix and control, achieving smooth and accurate pushing.

The application discloses a broadband multi-stage Gysel power divider based on an IPD process, comprising a microstrip structure layer, and first and second dielectric substrates and a ground metal layer; the microstrip structure layer adopts a multi-layer nested structure, each layer of the nested structure is formed by cascading multi-stage Gysel power division units, and is arranged on the upper surface and the interior of the first dielectric substrate, so that an integrated layout based on the IPD process is formed, and a planar spiral structure, an air bridge, a parallel plate capacitor, a thin film resistor and a layered ground unit structure are integrated; the planar spiral structure is equivalent to a specific characteristic impedance transmission line, the air bridge structure solves cross interference and suppresses a parasitic capacitor, the parallel plate capacitor structure calibrates equivalent reactance parameters, the thin film resistor effectively improves port isolation and heat dissipation, and the layered ground unit structure strengthens heat dissipation and ground reliability. The application can realize stable power distribution in a wide frequency band, and is suitable for the integration requirements of high-frequency, high-power and small-sized radio frequency front ends.

The application relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom dielectric substrate provided with a first excitation port and a second excitation port at two ends; a top dielectric substrate comprising a '+'-shaped dielectric cover layer arranged on the top of the bottom dielectric substrate; parallel plate slot waveguides connected with a first substrate integrated waveguide horn and a second substrate integrated waveguide horn at two ends respectively; a first waveguide transition structure connected with the first excitation port and the first substrate integrated waveguide horn at two ends respectively; and a second waveguide transition structure connected with the second excitation port and the second substrate integrated waveguide horn at two ends respectively. The application can realize wide-range beam scanning including backward end radiation, meanwhile, high-gain single beam scanning is maintained, the application has the characteristics of simple structure, easy integration and processing, high gain and full coverage of the upper half space, and greatly improves the performance of a millimeter wave wireless communication system.

The invention discloses a circuit board production process management and control method and system based on a multilayer circuit. The method comprises the following steps: establishing an interlayer transmission line parameter model of a multilayer circuit board, and calculating electromagnetic field distribution based on a deformation telegraph equation and a parallel plate resonance effect; performing transmission characteristic simulation verification; optimizing production environment parameters, and selecting an area of which the electric field intensity is lower than 45% maximum value as a wiring optimal area; implementing a layered wiring strategy, and optimizing an interlayer wiring path according to the transmission matrix; production data are dynamically monitored, temperature, humidity and electromagnetic radiation data are collected in real time, and machining parameters are adjusted in combination with a transmission matrix correction value. According to the method, the transmission characteristics are accurately predicted, the production environment parameters are optimized, the influence of the external environment on the performance of the circuit board is effectively reduced, and the stability and reliability of the circuit board are improved. Through establishment of a parameter model and simulation verification, comprehensive management and control of the production process of the multilayer circuit board are realized.

The utility model provides a combination device with a sleeve buckle structure for a power cable, which comprises a combination seat, combination sleeve mechanisms and a combination frame, the number of the combination sleeve mechanisms is two, the combination sleeve mechanisms are respectively connected and arranged on two sides of the combination seat, and the bottom end of the combination seat is movably connected with the combination frame; the combining and sleeving mechanism comprises a combining plate, a sliding lever, a spring column, a plate cover and a sleeve buckle, the sliding lever is fixed to the end wall of the inner side of the combining plate, the spring column is arranged at the end of the sliding lever in a penetrating mode, the plate cover is arranged on the side wall of the top end of the combining plate in a penetrating mode, the sleeve buckle is movably connected to the end, close to the plate cover, of the combining plate, and the combining plate is connected with the sliding lever through the spring column; the cable is convenient to assemble and place, the working efficiency is improved, and the potential safety hazard is reduced.

In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and a magnetic field generator operable to apply a magnetic field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a first capacitor plate having a plane, a second capacitor plate having a plane, and a dielectric interposed between the first capacitor plate and the second capacitor plate. The plane of the second capacitor plate is geometrically parallel to the plane of the first capacitor plate. In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and an electric field generator operable to apply an electric field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a pair of capacitor plates, and a dielectric interposed between the pair of plates.

The invention relates to a three-phase single-stage isolation ACDC device and a server power supply, a three-phase single-stage isolation ACDC circuit is arranged on a substrate, a quiet potential assembly is arranged between the three-phase single-stage isolation ACDC circuit and a shell, and the quiet potential assembly is connected to the three-phase single-stage isolation ACDC circuit. And the first capacitor, the second capacitor and the third capacitor of the three-phase input circuit are connected to form a common end. Therefore, each moving point and the quiet potential assembly on the three-phase single-stage isolation ACDC circuit can be equivalent to a parallel plate capacitor, and after the three-phase single-stage isolation ACDC circuit operates in any phase and generates common-mode noise, common-mode current flows through the second end of the first capacitor, the second end of the second capacitor and / or the second end of the third capacitor through the equivalent capacitor, so that the common-mode noise is generated. And finally, the noise flows back to the noise source in the three-phase single-stage isolation ACDC circuit. Common-mode noise generated by the three-phase single-stage isolation ACDC circuit and the shell is avoided, and the purpose of improving and solving common-mode noise interference generated by the three-phase single-stage isolation ACDC circuit on adjacent electric equipment is achieved.

The embodiment of the invention discloses a wide-range dielectric constant standard substance and a traceable valuing method thereof. The standard substance is based on a four-stage material system of high density polyethylene (HDPE), polyvinylidene fluoride (PVDF), aluminum oxide (Al2O3) and barium titanate (BaTiO3), and wide-range coverage of a single-piece dielectric constant epsilon r of 2.3-118 is realized through volume ratio regulation and control. And an annular retaining ring electrode structure (1-3mm unplated area is reserved on the edge) is adopted, so that the edge capacitance is inhibited to be less than 0.03% of the total capacitance, and the traditional edge correction is avoided. According to the constant value method, a sodium chloride solution (0.760 mol.kg <-1 >) is taken as a first-grade standard, and a quantity value is transmitted through a parallel plate clamp constant, so that the calibration requirement of a frequency band of 100Hz-1MHz is met. The uncertainty is less than or equal to 0.6% (k = 2), and the problems of narrow mass range, complex operation and difficult traceability of the existing standard substance are solved.

The invention discloses a clinical airway unobstructing device for old-age medicine. The clinical airway unobstructing device comprises a drafting frame, a pop-up auxiliary structure, a rotating replacement disc, a winding roller, a storage assembly and a main body support. The invention belongs to the technical field of airway patents. According to the scheme, only when all the trigger buttons are pressed down by the telescopic moving rod, discharging between the parallel-plate capacitors is ended, electrorheological fluid is made to be in the liquid characteristic, and in the state, the pop-up sleeving shell is separated from the rotating shaft through the pop-up auxiliary spring, so that the winding roller is assisted in being popped up, and therefore the winding effect is improved. Automatic auxiliary popping of the airway hose after the airway hose is wound in place on one winding roller is completed, and automatic experience is achieved; and when the next group of winding rollers are popped out, the falling winding rollers can be clamped by the storage rollers in the other group of overturning accommodating shells below, so that the air passage hose and the air passage intubation tube are convenient to replace, and the use experience is improved.

Multilayer ceramic capacitor, comprising: a dielectric body; first and second conductive terminals, separated from each other by the dielectric body; a multitude of parallel plate-shaped internal electrodes forming a stack of electrode layers embedded in the dielectric body; first and second groups of inner electrodes from the plurality of parallel plate inner electrodes, each group comprising a first inner electrode and a separate, adjacent second inner electrode, wherein a first gap of the first inner electrode is offset relative to a second gap of the separate, adjacent second inner electrode in a first direction between the first and the second conductive terminal, wherein a section of the first inner electrode overlaps a section of the second inner electrode to form capacitance regions in each group of inner electrodes; and a set of at least two third inner electrodes from the plurality of parallel plate inner electrodes arranged between the first and second group of inner electrodes, wherein at least two third inner electrodes are stacked next to each other and form a region with negligible capacitance.

An example folding device comprising: a first housing; a second housing; a hinge assembly rotatably connected to the first housing and the second housing; a continuous display connected to and across the first housing and the second housing; and a first collapsible support plate connected to the first housing and configured to support the continuous display when the folding device is fully opened, wherein: the first collapsible support plate comprises a single continuous plate folded over itself to form two parallel plates, a first parallel plate of the two parallel plates defines a straight edge that overhangs one or more voids in a second parallel plate of the two parallel plates, and the straight edge defined by the first parallel plate is adjacent to the hinge assembly.

The utility model relates to the technical field of flatness detection, and discloses a tunnel side wall flatness detection device, which comprises a parallel plate, the outer surface of the parallel plate is provided with a detection mechanism, the back surface of the parallel plate is fixedly connected with a lug block, the interior of the lug block is slidably connected with an extension rod, one end of the extension rod is fixedly connected with a side wall sliding mechanism, and the other end of the extension rod is fixedly connected with a side wall sliding mechanism. A plurality of screw holes are formed in the outer surface of the extension rod, and the outer surfaces of the lug blocks are in threaded connection with locking rotary knobs. An operator holds the handle to push the device to move, so that the steel ball is attached to the side wall, if the side wall is flat, the displacement amount detected by the displacement sensor is normal, and the alarm lamp is not turned on, and if the side wall is concave-convex, the steel ball drives the measuring rod to stretch out and draw back, and the displacement sensor detects abnormal displacement change, and the alarm lamp is turned on. The flatness of the side wall of the tunnel is rapidly judged in a visual alarm mode, and the detection work efficiency and convenience are improved.

The invention relates to a geological deformation monitoring system, which comprises a main pipe, a capillary pipe, a solid filler, a liquid filler, a microswitch, a parallel plate capacitor, a capacitance acquisition device and an alarm device, the first end of the main pipe is closed, and the second end is connected with the first end of the capillary; the second end of the capillary is connected with the parallel-plate capacitor; the capacitance acquisition device is connected with the parallel-plate capacitor to detect capacitance; the microswitch is arranged near the second end of the main pipe; the main pipe is filled with solid filler and liquid filler, and the solid filler moves when the main pipe deforms and enables the microswitch to be switched from a closed state to an open state. The liquid filler flows into the parallel-plate capacitor through the capillary tube when the main tube deforms, so that the capacitance of the parallel-plate capacitor is changed; the alarm device carries out geological deformation alarm according to the state change of the microswitch and / or the capacitance change detected by the capacitance acquisition device. According to the invention, a capacitance-mechanical dual-mode sensing mechanism is combined, and dual-mode early warning is realized.