307results about How to "Realize active control" patented technology

The invention relates to the technical field of exercise fitness equipment, in particular to an interactive fitness system and method based on virtual scenes. The system comprises fitness equipment, aKinect sensor, a large-screen displayer, a computer host, a loudspeaker and a fitness management system. Fitness users can select different instruments to be combined with the virtual scenes, and byintroducing action evaluation and correction and feedback of multiple aspects of vision, hearing and tactile sense, fitness actions are corrected and standardized in time, so that the effect of quickly developing standard fitness is achieved. The fitness actions of the users are evaluated in real time, action trigger thresholds or program types are self-adaptively changed according to completion effects so as to adjust the training difficulty coefficient, and meanwhile, the training difficulty can be adjusted by adjusting the training frequency and training time and selecting different instruments. When the system detects that the users complete a certain fitness action completely correctly, the number of training is automatically increased by one until the users start a next training program after the users complete training in a targeted number set by the training program, and then the training rhythm is actively controlled.

The invention relates to an electrohydraulic energy regenerative vibration absorber, which comprises a piston, a hydraulic check bridge, an accumulator, a hydraulic motor and a rotary generator. A vibration absorber cavity is divided into a rodless cavity (11) and a rod cavity (12) by a piston and a piston push rod (16); the two cavities are provided with an oil outlet and an oil inlet respectively; each oil outlet and each oil inlet are provided with a one-way valve; the one-way valve and a pipeline which is connected with the one-way valve form the hydraulic check bridge; the accumulator is connected in parallel on a connecting pipeline between two oil outlets and an oil inlet of the hydraulic motor; a volume conversion bridge (5) is connected in parallel on a pipeline between the oil outlet of the hydraulic motor and two oil inlets of the vibration absorber cavity; and the volume conversion bridge consists of two one-way valves and an oil tank which is connected with the one-way valves. The electrohydraulic energy regenerative vibration absorber meets the damping force requirement of an automobile vibration absorber, and can convert the ground vibration into direction-invariable rotary movement to drive the generator to generate power and actively control the damping of the vibration absorber by controlling the generator load.

The invention belongs to the technical field of bipropellant propulsion systems, and provides a method for using bipropellants efficiently to use propellants effectively. By adding gas bypasses among high-pressure gas cylinders and storage tanks, following functions are achieved: improving propellant surplus measuring accuracy, controlling the parallel storage tanks actively to be discharged in balance; controlling a system mixing ratio actively; and serving as a function backup of a mechanical decompression branch, eradicating system single point failures, and improving the system reliability. The method for using bipropellants efficiently can be widely applied in various trussed satellites, and can be generalized to all satellites using the bipropellant propulsion systems to improve performances of bipropellant propulsion systems and in-orbit management capacities of bipropellant propulsion systems.

A hydraulic double-motor driving electronic hydraulic braking system comprises a braking pedal, a braking master cylinder, a secondary master cylinder, a liquid storage tank, a pedal displacement sensor, a hydraulic pressure sensor, an electronic control unit ECU, a first electronic control linear moving module and a second electronic control linear moving module for performing active control on hydraulic braking force and pedal force of the system, an electronic stability control module ESC for regulating the hydraulic braking force of each wheel cylinder, a tee joint for connecting hydraulic pipelines between the braking master cylinder and the inlet of the electronic stability control (ESC) module as well as between the secondary master cylinder and the inlet of the ESC module. According to the invention, the pedal force of a driver can be utilized for pressure establishing, the active control on the pedal force is realized while a pedal force simulator with a complex structure is omitted, braking pedal feel is ensured, the braking intention of the driver can be correctly reflected, the active control on hydraulic pressure is realized, the braking requirement of a vehicle is met, maximum braking energy recycling can be realized, the control is precise, and the response speed is high.

A supercavitating navigation body model with an internal steering gear comprises a head cone section with a cavitation device and a cabin with an empennage. The cabin comprises a pressure measuring cabin section, a motor cabin section, a feedback cabin section and an empennage cabin section, the adjacent cabin sections are fixedly connected and sealed, the steering gear is arranged in the cabin and comprises a transmission shaft driven by a motor and a speed reducer, the transmission shaft is provided with a rotary encoder, one shaft end of the transmission shaft is fixedly connected with a driving bevel gear, the two ends of a hollow shaft are respectively and fixedly connected with a rudder spindle, the axis of the hollow shaft is perpendicular to the axis of the transmission shaft, the hollow shaft is provided with a driven bevel gear meshed with the driving bevel gear for transmission, the motor and the speed reducer are fixedly installed in the motor cabin section, the rotary encoder is located in the feedback cabin section, the transmission shaft penetrates through the feedback cabin section and stretches into the empennage cabin section, and the two rudder spindles are rotataby supported against the empennage cabin section and form the empennage. The steering gear can be arranged in the supercavitating navigation body model in an integrated mode, and active control and angle feedback for the two rudder spindles can be achieved.

The invention discloses a set top box, an internet television and a method for processing intelligent control signals. The method comprises the steps that signals comprising language signals and / or action signals are received; data conversion is conducted on the signals, so as to obtain conversion codes of the signals; and control instructions corresponding to the signals are obtained according to the conversion codes, and corresponding television function interfaces are called according to the control instructions. Through adopting the set top box, the internet television and the method, people can convenient interact with the internet television by aiming at natural language, an action control method and a matching mechanism of the internet television, so that the practicality and the convenience of the operation of the internet television are improved, thereby improving the user experience.

The invention discloses a device for the intelligent control of LED (light-emitting diode) indoor illumination. The device comprises a sensor, a sampling module, an A / D (analog-to-digital) converter, an intelligent processing chip, an internal memory, an input device, a display screen, a PWM (pulse-width modulation) signal generator, an LED drive circuit, an LED spotlight mode converting switch and an LED lamp system, wherein the LED lamp system comprises LED lamps with various colors and spotlight modules in different directions; the sensor is used for receiving the external signals and converting the signals into analog electrical signals; the sampling module is connected with the sensor and used for sampling the signals received by the sensor; the output terminal of the sampling module is connected with the A / D converter and used for transmitting the sampled optical signals to the A / D converter; the A / D converter is used for converting the received analog signals into digital signals and transmitting the converted signals to the intelligent micro-processor chip connected with the A / D converter; and the intelligent micro-processor chip is further connected with the sampling module and used for providing the clock frequency for the sampling module. Accordingly, the device is capable of automatically adjusting the light intensity, color and direction of the LED.

The invention provides a system which is capable of carrying out the optimal management on the electric energy of a complete automobile and a corresponding management method, aiming at the characteristics of a power storage device of the existing electric automobile with an electric driving device. The system comprises a power battery, a super capacitor, a motor driving control unit and a driving motor, wherein the power battery is connected with the super capacitor in series and is connected to the driving motor by the motor driving control unit; the system also comprises a power distributing circuit which is connected with a branch circuit in parallel; the branch circuit is connected with the power battery and the super capacitor in series; the power distributing circuit comprises a transformer and two switching tubes which are respectively connected with two coils of the transformer in series; and the connection and the disconnection of the switching tubes are controlled by a management unit connected with the switching tubes. The system and the method realize the active control on electric current and power flow and prevent the power battery from being overcharged by excessive brake feedback electric current of the automobile, thereby prolonging the service life of the power battery, making full use of the capacitor and achieving the double effects of economy and energy saving.

The invention provides an active protection system and a method thereof for preventing secondary damage of pedestrians, belongs to the technical field of automobiles and solves the problem that pedestrians are not efficiently protected when vehicles and pedestrians collide in the prior art. The active protection system comprises a vehicular control unit, a collision sensor, an automobile forward sensor, a pedestrian protection air bag device and a capture device. The method includes steps of A, detecting collision acceleration of the collision sensor, and detecting property and prior-collision motion states of an object to be collided by the automobile forward sensor; B, controlling the pedestrian protection air bag device to inflate and unfold an air bag when collision intensity exceeds the threshold; C, predicting flight path of the object according to the collision strength and the collision position, so as to correspondingly simulate moving track parameters of a current capture net and controlling the capture device to capture and wrap the object according to the moving track parameters of the current capture net. By the active protection system and the method thereof, secondary damage to the pedestrians can be effectively prevented, and safety of the pedestrians is protected to the greatest extent.

The invention provides a method and a base station for reconstruction of radio resource control (RRC) connection. The method comprises that the base station detects whether data transmission between the base station and user equipment is normal or not; when the data transmission is abnormal, the base station sends a signal to the user equipment (UE), so that UE can carry out reconstruction of RRC connection according to the signal; and the base station receives and processes reconstruction request of RRC connection sent by the UE. The base station can actively trigger the UE to initiate the reconstruction of RRC connection when the data transmission between the base station and the user equipment is abnormal, thereby preventing interruption of data transmission and reducing influences on the data transmission.

The invention discloses an endoscope surgical instrument outer sheath with variable rigidity and belongs to the technical field of minimally invasive surgical instruments. The endoscope surgical instrument outer sheath is composed of a plurality of variable-rigidity flexible units. Each variable-rigidity flexible unit comprises an instrument passage, three high-flexibility air bags, rigid connectors, a rigid wire and two discs; the rigid wire penetrates the rigid connectors and is connected with the same rigidly, the three high-flexibility air bags are connected by the method of looping the minimum-diameter positions of the air bags by round holes of the rigid connectors, and two ends of each of the three high-flexibility air bags are connected with the first disc and the second disc respectively. Spatial bending and rigidity adjusting can be realized by controlling internal pressure of the air bags. The endoscope surgical instrument outer sheath can be fit with the physiological curves of cavities of the human body, does not compress the inner-wall tissues, provides mechanical support to the surgical instruments by means of rigidity adjustment after reaching at focuses, and assists doctors to do operation more effectively on the premise of guaranteeing safety of minimally invasive surgery.

The invention discloses a control system for an intelligent door and window. The door and window comprises a frame, a casement, an electric actuating mechanism and an opening function part. The opening function part is driven by the electric actuating mechanism to control the opening degree of the casement. The control system comprises a sensor, a Bluetooth module and a controller. The sensor and the opening function part are formed integrally. The sensor comprises an induction generating element and an induction device. The opening function part comprises a fixing end and an opening end. The induction generating element is installed at one of the fixing end and the opening end. The induction device is installed in the corresponding position of the other of the fixing end and the opening end. When the opening degree of the casement is changed, the conducting state of the induction device is changed. The data acquired through the sensor are uploaded to the controller through the Bluetooth module, the controller acquires the best opening degree according to historical data, onsite environmental data and the data acquired through the sensor, and the best opening degree is sent to the electric actuating mechanism through the Bluetooth module. The invention further provides a method adopting the control system for the intelligent door and window.

The present invention provides an active acoustic metamaterial structural unit and a control device thereof, belonging to the technical field of acoustic metamaterials. The objective of the inventionis to provide an acoustic metamaterial structural unit with a function for active regulation of an inherent frequency and a control device thereof. The technical scheme employed to solve the technicalproblem comprises an active acoustic metamaterial structural unit, the active acoustic metamaterial structural unit comprises a rigid frame, at least one cantilever beam and a concentrated mass block, the concentrated mass block is located in the rigid frame, the concentrated mass block is fixedly connected with the rigid frame through the at least one cantilever beam, and the at least cantileverbeam employs elastic materials, the at least cantilever beam is internally provided with a cavity with a gas nipple. The control device of the active acoustic metamaterial structural unit comprises an active acoustic metamaterial structural unit, a microphone, a data collection card, a computer, a regulation valve, a gas storage tank, a pressure transmitter and a flow divider. The active acousticmetamaterial structural unit and the control device thereof can be widely applied to the field of noise inhibition.

The invention discloses an endoscopic surgery instrument outer sheath based on a soft continuum mechanism, and belongs to the technical field of minimally invasive surgery instruments. The endoscopic surgery instrument outer sheath comprises a plurality of flexible units, each soft unit comprises a soft air with the high ratio of expansion and contraction, a rigid connecting piece, a steel wire soft shaft, a nickel-titanium wire, a disc, a surgical instrument channel, a pretightening force support, a pretightening force air cylinder and a fastening screw. Air pressure in the air bags is controlled to change the lengths of the air bags, and space bending of the units is achieved. Under any bent state, the pretightening force air cylinders apply pretightening force to the three nickel-titanium wires, the bending rigidity of the units is controlled, the effect of changing the rigidity is achieved, and the function of passive protection is achieved. The endoscopic surgery instrument outer sheath is used as an outer sheath unit of an endoscopic surgery instrument entering a human body, the outer sheath can be bent along with the cavity of the human body, the tissue of an inner wall is prevented from being oppressed, the rigidity is changed after the endoscopic surgery instrument outer sheath reaches the position of a disease, mechanical support is provided for the surgical instrument, the tissue can be prevented from being over-pressed to be hurt through the passive protection characteristic of the outer sheath when the surgical operation is carried out, and therefore the safety and effectiveness of surgery are improved.

The invention discloses a rigidity and damping adjustable active vibration reduction support. The rigidity and damping adjustable active vibration reduction support comprises a fixed support unit and an adjustable support unit, wherein the fixed support unit comprises a base, a bearing, a sleeve and an elastic washer, the bearing is installed in the sleeve, and the elastic washer is installed between the sleeve and the base; the adjustable support unit comprises two internal friction discs, two external friction discs, at least two acting mechanisms and ejecting nuts, the two external friction discs are symmetrically installed at the two ends of the sleeve of the fixed support unit, the two internal friction discs are symmetrically installed on the two side end faces of the base of the fixed support unit, and a primary clearance exists between each external friction disc and the corresponding internal friction disc; and the acting mechanisms are installed in the base and axially fixed through the ejecting nuts. According to the rigidity and damping adjustable active vibration reduction support, on the basis that only one support space is occupied, active control over rotor support rigidity and damping is achieved; and the rigidity and damping adjustable active vibration reduction support is simple and compact in structure, large in adjustment range of the support rigidity and damping and high in reliability.

The invention relates to a roadbed dynamic response in-situ test system and a roadbed dynamic response in-situ test method. The scheme includes that an oil pump (12) is respectively communicated with a P-port of an electro-hydraulic servo valve (6) and a P-port of a first electromagnetic directional valve (8) through a one-way valve (10), an A-port and a B-port of the electro-hydraulic servo valve (6) are correspondingly communicated with a third and fourth operational oil ports (38 and 41) of a two-stage servo hydraulic cylinder (26), and an A-port of the first electromagnetic directional valve (8) is respectively communicated with a second operational oil port (36) of the two-stage servo hydraulic cylinder (26), an A-port of an electromagnetic ball valve (18) and an energy accumulator (5) through a second one-way valve (7). An operational end of the two-stage servo hydraulic cylinder (26) is tightly pressed on the surface of a roadbed (2) through a load sensor (24) and an excitation disc (23), all sensors in the system are electrically connected with a data acquisition card (2), and the data acquisition card (2) and computer auxiliary testing software (1) are mounted in a computer. Using the roadbed dynamic response in-situ test system and the roadbed dynamic response in-situ test method can not only realize in-situ prototype tests but also actively control test conditions.

The invention discloses a membrane servo valve driven by piezoelectric ceramics. The membrane servo valve comprises an upper valve body and a lower valve body, wherein a membrane is arranged between the upper valve body and the lower valve body; a cylindrical balancing oil cavity is formed between the upper valve body and the membrane; a ring-shaped throttling oil cavity is formed between the membrane and the lower valve body; the balancing oil cavity and the throttling oil cavity are communicated with each other; an ejector rod vertically penetrates through a space between the upper valve body and the balancing oil cavity; one end of the ejector rod is arranged with a set spacing distance to the membrane, or in contact with the membrane; one of the piezoelectric ceramics used for pushing the ejector rod to move is arranged at the other end of the ejector rod. The membrane servo valve has the benefits that through precise control of a throttling interval, the pressure and the flow can be precisely and actively controlled; the center of the membrane is set to be a central island shape, the central island shape is rigid, and a deformation zone around the central island shape is flexible, so as to improve the dynamic frequency of the membrane; meanwhile, the throttling interval control precision is improved, and the whole membrane servo valve is simple in structure, reliable in function and low in manufacturing cost.

The invention discloses a laser self-mixing interference measuring system, which comprises a laser, a coupler, a measurement channel, a reflector and a photoelectric detector, wherein the coupler has a first port, a second port and a third port; the first port of the coupler is connected with the output end of the laser; the measurement channel is connected with the second port of the coupler and is used for detecting a measured object; the reflector is arranged at the third port of the coupler and is used for controlling the feedback light; and the photoelectric detector is used for detecting the output power of the laser. According to the laser self-mixing interference measuring system, active control of the feedback light is realized through the reflector, so that control of waveform of the output power of the laser can be realized, measurement requirement is reached, measurement precision can be improved favorably, and measurement range is enlarged. The measuring system, with the advantages of a laser self-mixing interferometer and optical fiber transmission being combined, is simple in structure, small in size, capable of realizing miniaturized sensing detection and wide in application range.

The invention discloses a tracked vehicle remote control and autopilot system based on the Internet. The system is composed of a monitoring module, an execution module, a data processing module and a remote operation module. The data processing module processes the detection data of the monitoring module, issues the real-time status of a vehicle to the Internet, and controls the execution module according to the control instruction of a monitoring operation station or the decision of a neural network controller to remotely control the tracked vehicle to run. According to the invention, remote monitoring and active control of the monitoring operation station on the tracked vehicle and the autopilot function of the tracked vehicle are realized in the case of the Internet coverage; manpower is liberated; and safe driving is realized.

An optical filter based on graphene comprises an optical coupling structure. The optical coupling structure comprises an electrolyte layer, a metal electrode, a graphene strip array, a dielectric layer, a metal optical grating and a substrate. The electrolyte layer and the metal electrode are provided with adjusting devices for top gate voltage. A Fabry-Perot microcavity array composed of the graphene strip array, the dielectric layer and the metal optical grating is located on the substrate, and the electrolyte layer and the metal electrode are located on the same plane above the Fabry-Perot microcavity. Based on the micro-nano etching process technology and the multiplayer film technology which are extremely mature at present, the technological process is not complex, and operation is easy. Compared with a traditional filter with the same frequency band, the optical filter has the advantage that the size of a coupled component is greatly reduced due to introduction of graphene. The optical filter frequency is regulated by adjusting the Fermi level of graphene through grid voltage, active control over light is achieved, the needed power consumption is small, the quality factor is large, the response speed is high, and very wide working frequency is achieved.

The invention relates to a management method and apparatus of a network device. The method comprises the following steps: setting the network device as a management device in response to a first logininstruction; periodically sending a broadcast message, wherein the broadcast message comprises an MAC address of the management device; receiving a first broadcast response message sent by a member device, wherein the first broadcast response message is a message sent by the member device to the management device according to the MAC address of the management device in the case that the identification information of the management device is not recorded locally, and the first broadcast response message comprises the MAC address of the member device; and when the information of the member device is not recorded in a management domain, adding the member device to the management domain, wherein the management domain is used for storing the member devices that may be managed by the managementdevice and the MAC addresses of the member devices. According to the management method and apparatus of the network device in the embodiment of the invention, the management and active control of themember device by the management device can be achieved, and the management efficiency of the network device in a local area network is improved.

The invention discloses a fully-decoupled electronic hydraulic braking system and a corresponding vehicle. The fully-decoupled electronic hydraulic braking system includes a electronic control unit, a motor, a braking pedal displacement sensor, a braking pedal, a secondary main cylinder, a pedal simulator, a decoupling cylinder, a main cylinder, a wheel cylinder, and a liquid storage device; a pipeline between the decoupling cylinder and the liquid storage device is provided with a normally closed solenoid valve of the decoupling cylinder; the main cylinder can be decoupled with the secondary main cylinder through the decoupling cylinder and is driven by the motor or is coupled with the secondary main cylinder and is driven by the secondary main cylinder. The fully-decoupled electronic hydraulic braking system can achieve active control and adjustment of hydraulic pressure without a high pressure energy accumulator, a pump, a hydraulic pipeline, and a solenoid valve, so the fully-decoupled electronic hydraulic braking system has no the problem of potential safety hazard of the high pressure energy accumulator and a disabled solenoid valve; the structure of the fully-decoupled electronic hydraulic braking system is simple, the main cylinder is not needed to be changed, and then the cost is reduced; and failure protection of the braking system can be achieved through interaction of the decoupling cylinder and the normally closed solenoid valve.

The invention aims at the problem that road lighting dead zones occur during night driving of vehicles and provides a front lamp following turning control method based on machine vision. The method includes: recognizing night lane lines to determine a pre-aiming distance of a current control cycle and a longitudinal distance corresponding to the current image frame; determining a road pre-aiming analyzing area in the current image frame, and performing transverse image correction to lane lines in the pre-aiming analyzing area; determining the included angle of the driving direction of a vehicle and the road, the road width and traverse distance from a vehicular camera to the left lane line and the right lane line; and identifying road conditions of the pre-aiming analyzing area and determining the front lamp turning angle. By the method, road lighting area in the pre-aiming distance is increased effectively, lighting dead zones in front of the vehicle is eliminated in real time, the front lamp turning angle is unaffected by vehicle driving, intelligent active control of front lamp following turning is achieved, and safety driving without visual dead zones of drivers is guaranteed.

The invention provides a stability augmentation inflation type reentry vehicle. An umbrella-shaped inflation body is formed by an inflation type speed reduction cover and an instrument cabin. Four inflation type control surfaces are evenly distributed on the outer edge of the speed reduction cover. An air compressor and a control system are placed in an effective load cabin from bottom to top. A main valve of the air compressor is communicated with inflation openings of the control surfaces and inflation openings of the speed reduction cover through inflation pipelines respectively. In the stability augmentation inflation type reentry vehicle, the control surfaces and the speed reduction cover can be opened through an inflation device when used, and are put away after being used. The stability augmentation inflation type reentry vehicle is light in structural weight and convenient to design, machine, maintain, control and the like. Under the condition that the structure of the speed reduction cover does not need to be changed and no complex propelling systems need to be added, the aerodynamics characteristics required for control are obtained, the active control over the atmospheric reentry aircraft is achieved, and unsteady influences of complex eddy of the leeward area of the speed reduction cover on the posture of the reentry vehicle are avoided.

The invention provides a near-beta ultrahigh-strength titanium alloy with the tensile strength of more than 1450 MPa. The volume fraction of a primary alpha phase in the near-beta ultrahigh-strength titanium alloy is 15-30%, and a secondary alpha phase is uniformly distributed on a beta matrix. The preparation method comprises the following steps: (1) determining a main component system of the novel ultrahigh-strength titanium alloy; (2) measuring the beta transformation temperature, performing cogging forging above the beta transformation temperature of a titanium alloy cast ingot, and then gradually reducing the forging temperature to below the beta transformation temperature for repeated upsetting-drawing forging; (3) setting the temperature of the finish forging process below the betatransition temperature to obtain an ultrahigh-strength titanium alloy forging stock; and (4) carrying out solid solution treatment and double aging strengthening treatment on the ultrahigh-strength titanium alloy forging stock in a hot working state to obtain the near-beta ultrahigh-strength titanium alloy with the tensile strength of more than 1450 MPa. The strength of the ultrahigh-strength titanium alloy is more than 1450 MPa, and simultaneously, the requirements for comprehensive performance such as good plasticity, good toughness and the like can be met.

The invention discloses a direct-current drive and active temperature control system of a two-stage high-frequency pulse tube refrigerator and a design method of the two-stage high-frequency pulse tube refrigerator. The system is composed of a first DC (direct current)-DC conversion module, a second DC-DC conversion module, a dual-channel analogue-digital signal conversion module, a two-stage weighing control module, a PID (Proportion Integration Differentiation) control module, a SPWM (Sinusoidal Pulse Width Modulation) signal modulating module, a dual-channel digital-analogue signal conversion module, a dual-channel temperature signal collecting and operation amplifying module and an H bridge power amplifying module. Cold end temperature in each stage of the two-stage refrigerator is collected and converted into appropriate voltage signals, control signals are output by treating a series of signals so that the two-stage pulse tube refrigerator can be efficiently driven by a direct current power supply, and the cold end temperature in each stage of the two-stage refrigerator is actively controlled. The two-stage high-frequency pulse tube refrigerator has a very positive connotation when being applied to spaceflight and other special fields.

The invention provides a method for underpinning an antifriction separator for shallow underground space construction. The method comprises the following steps that: firstly, the antifriction separator and a supporting tube are arranged on jacking construction equipment; secondly, when the construction equipment is jacked in, the antifriction separator and the supporting tube are driven to the right position gradually; thirdly, a fixing device is used for fixing the antifriction separator; fourthly, the jacked equipment exits; finally, a prefabrication structure is jacked from a start working well by a synchronous jack so as to underpin the supporting tube in underpinning space under the antifriction separator. The invention also discloses an antifriction separator underpinning device for the shallow underground space construction, comprising the antifriction separator, the supporting tube and the fixing device, wherein the antifriction separator separates an upper overburden layer from the top surface of the supporting tube; and the antifriction separator is fixed on a space enclosing structure through the fixing device. The device and the method solve the problem of earthback pressure effect generated by rectangular jacking method and box culvert jacking method in underground space construction, can smoothly complete construction under a condition that earth covering is hardly disturbed, thereby achieving the aims of protecting periphery environment, reducing measurement cost and reducing the whole working period.

The invention provides an oil-gas active interconnection energy feedback suspension which comprises a first oil-gas suspension body A and a second oil-gas suspension body B. Oil outlets of the first oil-gas suspension body A and the second oil-gas suspension body B are connected through a rectifier bridge. The output end of the rectifier bridge is connected with a hydraulic motor. The hydraulic motor is connected with a power generator. The power generator is connected with a battery circuit. When certain excitation is supplied to the suspension by a road surface, liquid interaction is generated by the first oil-gas suspension body A and the second oil-gas suspension body B, liquid flows through the hydraulic motor in one direction all the time through the rectifier bridge, the hydraulic motor rotates to drive the power generator to generate power, and generated electric energy is stored in a battery through the battery circuit. Therefore, suspension vibration energy is effectively recovered while the requirement for the vehicle performance is met, in a system, an MOS transistor controller in the battery circuit can be controlled so as to adjust the rotation speed of the hydraulic motor, so that the designed suspension is actively controlled, and the smoothness performance and the operation stability performance of a vehicle are improved.

The invention discloses a self-powered type vehicle active suspension which comprises an actuator, a spring, a power module circuit, a super capacitor and a controller; the actuator and the spring are arranged between a vehicle body and a vehicle bridge in parallel; the input end of the controller is connected with a sprung mass speed sensor and an unsprung mass speed sensor; the actuator is composed of a piston barrel, a linear motor unit, a variable damping unit, an upper lifting lug, a lower lifting lug, a piston barrel upper end cover and a piston barrel lower end cover; the linear motor unit is composed of a piston rod and a plurality of permanent magnets; a partition plate is arranged in the piston barrel; a plurality of silicon steel sheets and a plurality of primary windings are arranged in the piston barrel between the piston barrel upper end cover and the partition plate; the variable damping unit is composed of a piston and a damping liquid channel; and a plurality of proportional electromagnetic valves are arranged on the damping liquid channel. The invention also discloses a coordinated control method of the self-powered type vehicle active suspension. The self-powered type vehicle active suspension is high in working stability, reliability, energy reclaiming efficiency and real time and can be in the optimal vibration attenuation state.

The invention relates to a drilling peeping instrument capable of achieving single-person operation, and belongs to the technical field of drilling peeping devices. The drilling peeping instrument solves the problems that an existing drilling peeping instrument is complicated in operation, the drilling peeping process is difficult to complete by a single person, the drilling depth recording accuracy is low, and the image quality is poor. The drilling peeping instrument includes a camera probe, a push rod, an imaging host and a metal frame. The camera probe is arranged at the end of the push rod, the metal frame is provided with a depth counter pulley, and the camera probe and the depth counter pulley are connected to the imaging host through cables. The outer circumference of the depth counter pulley is uniformly provided with protrusions, and the push rod is provided with push rod grooves matched with the protrusions; the depth counter pulley is provided with a rotating rod, and the depth counter pulley is controlled by the rotating rod to rotate, the protrusions and the push rod grooves are matched to push the push rod to move the camera probe into a drilled hole, and the arc length rotation of the depth counter pulley is the moving distance of the camera probe. The drilling peeping instrument realizes single-person operation of the drilling peeping process, and the drillingdepth recording accuracy is high.