219 results about "Dual sensor" patented technology

The invention relates to the technical field of motor control, and discloses a permanent magnet synchronous motor control system and method for an electric drive hydraulic source, and the system comprises a data collection module which is used for collecting the state parameters of the electric drive hydraulic source and the operation data of a permanent magnet synchronous motor in real time through multiple sensors; the sensor redundancy and fault-tolerant module is used for performing parallel sampling through hardware dual-redundancy configuration and dual sensors; the self-adaptive fuzzy logic control module is used for dynamically adjusting a rotating speed instruction and a torque instruction of the permanent magnet synchronous motor based on the collected state parameters; a data driving optimization module; and a digital twinning prediction maintenance module. A self-adaptive fuzzy logic control module is used for dynamically generating a motor rotating speed and torque instruction based on parameters such as real-time pressure, flow deviation and change rate, a fuzzy logic algorithm is used for processing a nonlinear time-varying load and quick response, a self-adaptive fuzzy logic control rule weight and a power conversion circuit parameter are optimized through a reinforcement learning algorithm, and the control precision is improved. And dynamic self-optimization of permanent magnet synchronous motor control is realized.

The invention provides an automatic processing method for real-time observation data of an ocean station, and belongs to the technical field of ocean observation data processing. A wavelet packet decomposition multi-scale noise separation algorithm is established to distinguish environmental noise and real signals, dual-sensor redundancy configuration is combined with Bayesian inference to identify sensor drift, and a calibration coefficient is updated in real time through a recursive least square method. A one-dimensional time sequence is mapped to a high-dimensional phase space by utilizing a phase space reconstruction algorithm to realize high-precision prediction of a chaotic signal, a hierarchical data storage architecture is established, and a data migration strategy is iteratively optimized through a hierarchical correlation degree function; the technical problem that time synchronization signals are difficult to reconstruct accurately according to asynchronous sampling data of multiple sensors of an ocean station is solved.

The invention provides a bulk material weighing method, system and device based on double sensors, and relates to the technical field of electronic scale verification, and the method comprises the steps: weighing a bulk material through double sensors, and obtaining an original weight signal corresponding to each sensor in the double sensors; performing preprocessing and scene filtering on each original weight signal to obtain effective weight data of each sensor on the bulk material; mutual correction analysis is carried out based on each effective weight data, and the data deviation state of the double sensors is judged; and according to the data deviation state, the final weight value of the bulk material is determined. According to the method, the problems of time difference, noise, sensor drifting and the like are effectively eliminated through the technical means of preprocessing, scene filtering, mutual correction analysis and the like, meanwhile, the consistency and the accuracy of data of the double sensors are ensured through mutual correction analysis, and finally, the precision and the stability of bulk material weighing are remarkably improved through comprehensive analysis and optimization processing.

A system and method for calibrating and setting up a machine guidance system for construction assets, such as loaders or excavators, employ point cloud data from onboard optical sensors to acquire spatial measurements. Point cloud data is transformed to an asset coordinate frame, candidate pitch and roll offset values are applied, grid representations are generated, and calibration values are selected with reduced error by comparing these grids to a reference surface. The system and method support autonomous operations including obstacle avoidance and grading by modifying the point cloud data according to the determined calibration values. In addition, dual-sensor calibration, terrain mapping, and filtering techniques are disclosed.

The invention discloses a photovoltaic connector with a limiting assembly, and belongs to the technical field of photovoltaic equipment connection, the photovoltaic connector comprises a plug assembly, a socket assembly and the limiting assembly, and the plug assembly is connected with the socket assembly through the limiting assembly. Through cooperation of multiple components, traditional bottlenecks are broken through, double gradient sealing is achieved, rainwater and dust are blocked, the problems of short circuit and corrosion caused by failure of traditional single sealing are solved, and long-term stable outdoor operation of the connector is guaranteed; meanwhile, SMA composite limiting is arranged, the limiting force of 50-80 N can be kept within the range of-40 DEG C to 85 DEG C, and insertion loosening caused by embrittlement of a traditional buckle and creep deformation of a common spring is avoided; the double sensors are integrated, signals are integrated through the miniature PCB and transmitted to the controller or the terminal, faults are early warned in real time, power generation loss caused by fault delay is reduced, and maintenance cost is reduced.

Disclosed in the present application is a catheter pump system. A measured intraventricular pressure and a measured intravascular pressure are measured by means of dual sensors, respectively, and an estimated intraventricular pressure is calculated by using the measured intravascular pressure, a motor current, and a motor rotation speed. When it is determined that a suction event occurs in a pump assembly by using at least one of the estimated intraventricular pressure, the measured intravascular pressure, and the motor current, the root cause of the suction event is further determined by using the positive or negative characteristics of the measured intraventricular pressure.

The invention relates to the technical field of electric pole burial depth measurement, in particular to an electric pole burial depth nondestructive measurement method, system, equipment and medium, and the method comprises the steps: coaxially installing a first sensor and a second sensor on the side wall of an electric pole at a preset interval along the axial direction of the electric pole; impact excitation is applied to the side wall of the electric pole, vibration signals of the first sensor and the second sensor are synchronously collected, and a dual-channel time domain signal is obtained; calculating the wave velocity of the elastic wave in the current electric pole according to the arrival time difference of the head wave in the dual-channel time domain signal and a preset interval; based on the calculated wave velocity and the dual-channel time domain signal, performing signal processing and statistical analysis on a plurality of samples obtained by multiple times of measurement so as to identify the arrival time difference corresponding to the stable uplink reflected wave; and calculating the burial depth of the electric pole according to the identified arrival time difference and wave velocity of the uplink reflected wave. The method has the beneficial effects that the risk of high-altitude operation is thoroughly avoided through double-sensor side wall installation and intelligent algorithm decoupling.

The invention discloses a line position detection device based on an orthogonal CCD sensor and a positioning method. The device comprises an outer reference frame, an orthogonal CCD line target imaging module and a data acquisition and image processing unit. The orthogonal CCD line target imaging module comprises two orthogonally arranged CCD sensors, a short-distance large-wide-angle industrial camera and a calibration plate; the included angle between the optical axes of the two CCD sensors is 90 degrees, and data collection is controlled through the synchronous trigger switch. The CCD sensor realizes line target one-dimensional offset measurement under a high-precision calibration plate, realizes redundant observation of line target two-dimensional position quantity under the constraint of the orthogonal double CCD sensors and the distance between the calibration plates corresponding to the CCD sensor, and obtains a line position by using least square adjustment. According to the invention, the technical scheme of real-time calibration of the orthogonal CCD sensor and high-precision and high-reliability non-contact acquisition of the two-dimensional position of the linear target is adopted, and the problems of poor precision and low reliability of linear target measurement and extraction are solved.

A regional oximetry pod drives optical emitters on regional oximetry sensors and receives the corresponding detector signals in response. The sensor pod has a dual sensor connector configured to physically attach and electrically connect one or two regional oximetry sensors. The pod housing has a first housing end and a second housing end. The dual sensor connector is disposed proximate the first housing end. The housing at least partially encloses the dual sensor connector. A monitor connector is disposed proximate a second housing end. An analog board is disposed within the pod housing and is in communications with the dual sensor connector. A digital board is disposed within the pod housing in communications with the monitor connector.

The invention discloses a soybean-corn intercropping nitrogen and phosphorus synergistic efficient utilization method based on rhizosphere signals, and relates to the technical field of microbial technology and agricultural engineering, a BX-pH dual sensor array is deployed in a root system intersection area, and the concentration and microscale pH change of benzoxazoline are monitored in real time; processing data by using two-stage feature transformation and a time sequence attention bidirectional GRU model, calculating a nitrogen-phosphorus disconnection coefficient and positioning risk coordinates; then, a buffer-antioxidant bifunctional nano-carrier is injected along the risk coordinates, neutralization acidification is carried out, and active oxygen is eliminated; after acidification and active oxygen signals are reduced to threshold values, DualFlow functional bacteria are inoculated at the same coordinate, and nutrition flow is recovered through phosphorus dissolution and nitrogen fixation synergistically; finally, a transport gene activation signal and nitrogen fixation intensity are continuously monitored through a BX-pH sensor array, and root zone water and proton outflow is adjusted in combination with variable-frequency pulse irrigation. Nitrogen and phosphorus utilization efficiency is remarkably improved, chemical fertilizer dependence is reduced, and crop yield and soil health are improved.

Through the multi-sensor fusion design of the microphone, the millimeter wave radar sensor and the piezoelectric film sensor, compared with an existing single or double-sensor sleep monitoring technology, the monitoring precision, the function dimension, the environmental adaptability and the like are remarkably improved. According to the method, a weighted voting decision fusion mechanism and an improved random forest model are adopted, and after a microphone acoustic monitoring dimension is newly added, the apnea detection sensitivity is improved; acoustic characteristics such as snore, breath sound rhythm, cough and dream can be accurately captured; health risk assessment dimensions are richer, preliminary screening of diseases such as sleep apnea syndrome and periodic limb dyskinesia can be realized, snore indexes and breathing stability are newly increased, and a multi-dimensional sleep quality report is provided for a user; in the whole process, an electrode plate or a wrist strap does not need to be worn, the three sensors all adopt non-intrusive design, no foreign body sensation exists after the piezoelectric film is embedded into the mattress, the problem of wearing discomfort of traditional monitoring is solved, and the user compliance is improved.

The present invention discloses a packaging shell protection structure for a temperature sensor, which belongs to the field of sensor technology and includes a packaging shell. A dual PT temperature sensor and a PE vibration sensor are provided in the packaging shell. The packaging shell includes a probe end, a connection end, and a sensor conversion end. The probe end includes a probe temperature sensing cover, a central partition mounting member is provided in the probe temperature sensing cover, and a vibration test probe is provided at the end of the probe temperature sensing cover. The present invention completely avoids the problem of the vibration core squeezing the PT sensor lead in traditional assembly by fixing the PE integrated circuit board and the internal control column threading hole through a U-shaped card slot, significantly improving the product molding quality and long-term stability, increasing the electrical gap, and enhancing the insulation withstand voltage performance. Two sets of platinum resistance temperature sensing elements are used in conjunction with a temperature isolation chamber design. The sensors are quickly switched through a magnetic control system without waiting for temperature recovery, and the response speed is greatly improved. The dual sensor data are mutually calibrated to improve the temperature measurement accuracy and reliability.

The invention discloses a silicon carbide power device junction temperature online accurate extraction method based on a double-sensor Kalman filtering weighted average algorithm, and the method comprises the following steps: 1, enabling a loss model of a power device to receive the phase current, the DC bus voltage, the duty ratio, the phase current and the DC bus voltage from an inverter; the on resistance of the SIC MOSFET, the reference direct current bus voltage, the on loss energy and the off loss energy under the on current and the on threshold voltage of the Schottky diode are obtained from a data manual of the chip, and the gate driving resistor is used for extracting the junction temperature and monitoring operation in real time; and step 2, obtaining an estimated junction temperature through loss calculation of a power device and a thermal network model, and weighting the junction temperatures estimated at different measurement points through a Kalman filtering weighted average algorithm to obtain a more accurate junction temperature for next iterative calculation. According to the method, the limitation of a traditional single sensor in a dynamic working environment can be effectively compensated, and the accuracy and the real-time performance of junction temperature monitoring are improved.

The invention discloses an infusion monitoring and automatic blocking device and method. The device comprises a blocking mechanism, a monitoring module and a control module. The blocking mechanism controls the first abutting piece and the second abutting piece to be close to each other through the driving piece so as to clamp the infusion tube. The monitoring module adopts a double-sensor scheme of an upper sensor and a lower sensor and is used for monitoring liquid drop pulse and liquid level height. And the control module operates a weighted average data fusion algorithm based on confidence, and calculates the actual dripping speed after fusion. According to the device, the accuracy and reliability of infusion state monitoring are improved through a dynamic calibration algorithm and data fusion. The control module can accurately identify three main risk states, namely dripping speed and flow abnormity, infusion completion and pipeline gas abnormity. When it is judged that the infusion tube flow channel is abnormal, the control module drives the blocking mechanism to rapidly block the infusion tube flow channel, a double confirmation mechanism is arranged to provide safety redundancy, a safety closed loop of'detection-decision-execution 'is formed, and the safety and management efficiency of clinical infusion are improved.

The invention discloses a pet non-inductive health monitoring and stress early warning intelligent nest mat and a control method, and belongs to the technical field of pet intelligent articles and intelligent control. Pet physiological parameters are synchronously collected through the piezoelectric pressure sensor and the infrared temperature sensor, the stress level is quantitatively judged based on an AI algorithm model, graded early warning and matching type relieving intervention are triggered according to the stress level, and meanwhile a low-power-consumption control mechanism is carried to achieve long endurance. The intelligent nest mat is of a three-layer detachable waterproof structure and supports a double-sensor high-precision scheme and a single-sensor low-cost scheme at the same time, and all the modules work cooperatively to achieve a whole-process closed loop of monitoring, early warning and relieving. The system solves the problems of wearing resistance, low monitoring precision, untimely early warning, inactive relieving and the like of pets, is suitable for family health monitoring of common pets such as dogs, cats and the like, and has the advantages of non-inductive monitoring, accurate identification, intelligent intervention, low power consumption, flexible scheme and the like.

The invention discloses a double-range current measurement system based on a solid-state relay, and relates to the technical field of current measurement. The system comprises a closed-loop Hall current sensor, a first shunt resistor, a second shunt resistor, a solid state relay (SSR), a Hall conditioning IC and an external controller. Two shunt resistors with different resistance values are dynamically switched through a solid-state relay, and compatibility of low-current high-precision measurement and high-current wide-range measurement is achieved. The method solves the problems that the precision and range of an existing single-range sensor are difficult to consider, double sensors are high in cost, mechanical relays have defects and the like, has the advantages of low cost, high reliability, good measurement precision and the like, and is suitable for wide-dynamic-range current measurement scenes such as an energy storage system and the like.

The invention discloses an aircraft control method based on barometric altitude compensation and attitude calculation of dual-sensor fusion, and the method comprises the steps: carrying out the temperature compensation and attitude calculation through collecting the data of a barometric sensor and an inertial measurement unit, and obtaining an original altitude and an Euler angle; processing the original height based on an alpha-beta filter to obtain an air pressure estimation height, and calculating an inertial navigation height and a vertical speed through attitude conversion integral; a self-adaptive complementary filtering strategy is adopted, the fusion weight is dynamically adjusted according to the air pressure estimation height variance, the high-frequency inertial data and the low-frequency air pressure data are fused, and accurate fusion height and vertical speed are output; finally, constructing a cascade controller, and calculating a target vertical speed instruction by an outer ring according to the expected height deviation; the inner ring generates an actuator signal based on the deviation to drive a motor; height stable control is achieved, so that drifting is effectively restrained, the precision and the response speed are improved, and reliable height control of the aircraft under vibration or air pressure changes is achieved.

The application provides a kind of calibration-free liquid level detection device, method and washing machine, comprising: first TMR sensor is arranged above the liquid surface to be measured, second TMR sensor is arranged below the liquid surface to be measured, magnetic float floats on the liquid surface to be measured;The magnetic field intensity detected by the first TMR sensor is collected simultaneously, and the magnetic field intensity detected by the second TMR sensor is collected simultaneously;The ratio of the two magnetic field intensities is calculated;Then the liquid level height of the liquid surface to be measured is calculated according to the ratio of the two magnetic field intensities.The liquid level height of the liquid surface to be measured can be calculated by the ratio of the magnetic field intensity detected by the double TMR sensor, the ratio of the magnetic field intensity can offset the magnetic field attenuation of permanent magnet, common mode electromagnetic interference, sensor individual difference, without factory calibration and regular calibration, can greatly improve production efficiency, reduce maintenance cost;Without complex mechanical structure, installation is convenient;No mechanical contact wear, overall reliability is high, life is significantly better than traditional detection scheme.

This utility model discloses a trolley positioning mechanism, comprising: a frame; a guide mechanism, one end of which is connected to the frame and guides the trolley towards the frame; a positioning mechanism, which is respectively mounted on the trolley and the frame and positions the trolley; and a fixing mechanism, which is mounted on the frame and fixes the trolley. This utility model guides the trolley to automatically align itself using ramps and guide bars, and utilizes V-shaped positioning blocks for precise positioning, ensuring consistent placement each time. After dual sensors detect the trolley's arrival, cylinders on both sides simultaneously clamp it to prevent displacement or shaking; the entire mechanism is firmly fixed to the ground and is not easily loosened even with frequent use; the structure is simple and durable, and maintenance is convenient, making it particularly suitable for automated production lines requiring rapid and precise placement of objects.

The invention discloses a two-wheeled vehicle energy recovery system and method. The system comprises an environment sensing module (a GPS, an air pressure sensor, a gyroscope, a terrain processor and a Kalman filtering prediction gradient), a signal acquisition module (a brake force sensor, a wheel speed sensor, a load sensor, a temperature sensor and a double-SOC sensor), and a super capacitor module (an energy storage area is made of a high-energy density material; the energy discharge region is made of a high-power-density material; the execution output module comprises a hub motor, a rectifier, a double-LLC converter, a relay, a clutch, a PTC and a liquid cooling system. The method comprises the steps that 1, dynamic energy recovery is conducted, specifically, the total required braking force is calculated during braking, regeneration or friction braking is selected according to the SOC of an energy storage area, and the regenerative braking force is limited by motor characteristics and capacitor voltage; 2, intelligent energy transfer: an energy storage area SOCgt; and when the temperature is 80%, the transfer amount is calculated according to the state, and is transferred within the temperature control range of-20 DEG C to 65 DEG C through SOC correction in an energy discharge region. According to the invention, the recovery efficiency and the service life of the system are optimized through capacitor partitioning and multi-mode control.

According to the double-parameter linkage cooling system and method for the heat recovery refrigerating unit, the output frequency of the frequency conversion execution module is dynamically adjusted through double-parameter linkage control of the condensation pressure and the heat recovery water supply temperature, and then the rotating speed or the start-stop state of the cooling water pump is controlled; flow regulation of a traditional cooling water side bypass circulating pipe is replaced, cooling requirements under different loads are met, a cooling water pump is started, stopped and regulated in speed according to requirements, the function of improving the operation efficiency of a cooling system is achieved, system energy consumption is reduced, and the service life of equipment is prolonged. A traditional cooling water side bypass circulating pipe is omitted, the system structure is simplified, the modification cost is low, the period is short, and upgrading and modification of various existing heat recovery refrigerating units are adapted; according to the method, working condition unbalance caused by single-parameter control is avoided through two-parameter cooperative regulation and control, meanwhile, multiple protection mechanisms such as double-sensor backup, minimum rotating speed limitation and an anti-lock program are set, and safe operation of a unit is ensured.

The application discloses an anti-seepage and anti-explosion automatic control pressure high-pressure injector device and belongs to the field of image contrast diagnosis and treatment equipment. The device comprises a driving pushing unit and an injection cylinder. A hose is connected to the discharge end of the injection cylinder through a joint. A first pressure sensor, a second pressure sensor and a buffer are sequentially installed on the hose. The first pressure sensor is close to the discharge end of the injection cylinder. The buffer is arranged downstream of the second pressure sensor. A movable block in the buffer can divide a liquid channel of the connected hose and a volume-adjustable exchange chamber. The driving pushing unit is transmissionally connected to an injection plug in the injection cylinder and is electrically connected to a control box receiving signals of the two sensors. The application can compare and distinguish two types of faults, i.e. blockage and overload in the cylinder and blockage of the distal pipeline, by means of the double sensors, so that the control system can be stopped in advance for protection, the defects of lagging and poor fault tolerance of single pressure detection and identification can be made up, medical risks such as extravasation of contrast medium, pipeline burst and blood vessel injury can be reduced, the injection pressure is stable and controllable, and medical staff need not to be on duty for a long time.

This invention discloses a fuel tank anti-theft detection method and system based on differential and multi-feature fusion recognition. The method includes: executing a fuel tank anti-theft detection algorithm within a time recognition window to determine abnormal fuel tank opening behavior; if multiple consecutive time recognition windows determine abnormal fuel tank opening, an alarm message is generated and sent out. The advantages of this invention are as follows: 1. The dual-sensor differential structure can distinguish between overall vibration and local structural displacement; 2. Data collected by dual sensors can effectively distinguish between overall vehicle vibration and local abnormal fuel tank cap opening behavior; wherein, direction-sensitive differential can enhance the recognition ability of the opening direction movement, and multi-feature fusion recognition can significantly reduce the false alarm rate and improve recognition accuracy; 3. It provides self-learning suppression alarm, which can improve environmental adaptability; 4. It achieves long-term low-power operation through hierarchical power consumption management, suitable for scenarios without external power supply.

The utility model discloses a photoresist emptying detection device and a machine table. The photoresist emptying detection device comprises a first gas detection sensor arranged on a photoresist container and a second gas detection sensor arranged on a photoresist pipeline, the device further comprises an analysis control system, and the analysis control system is connected with the first gas detection sensor and the second gas detection sensor and judges whether the photoresist is emptied or not according to detection results of the first gas detection sensor and the second gas detection sensor. Through the photoresist emptying detection method in which the two sensors are matched with each other, the actual consumption condition of the photoresist is accurately identified, the problem of bubbles in a pipeline is timely eliminated, and meanwhile, the photoresist allowance can be further confirmed according to signals of the sensors on the photoresist container. Manual confirmation is not needed, and production efficiency is improved.

The invention relates to the technical field of wind power, in particular to an anti-overtemperature monitoring system and method for a high-speed shaft brake of a doubly-fed wind turbine generator, and the system comprises an infrared sensor, a PT100 temperature sensor, a two-channel temperature controller, a PLC, an SCADA monitoring system, an infrared sensor support, a miniature circuit breaker and the like. The system monitors the temperature of a brake disc in a non-contact mode and monitors the temperature of a brake pad in a contact mode through double sensors, the temperature is converted into a standard analog quantity signal through a temperature controller, a series detection loop and differentiation threshold judgment are combined, and a PLC outputs an instruction; the method comprises the steps of two-way temperature measurement, signal processing, logic control and remote monitoring, and is adaptive to the potential hazard of heat generation by friction of aging of a brake of an old unit. According to the invention, a double-point redundancy monitoring system is constructed, the defects of single temperature measurement and lack of verification in the prior art are overcome, the reliability and accuracy of overtemperature identification are improved, false triggering is avoided, the operation and maintenance convenience is optimized, and the operation safety of the wind turbine generator is comprehensively guaranteed.

The utility model discloses a pressure detection device for an isobutane / n-butane raw material storage tank. The pressure detection device comprises a pressure detection unit, a signal processing module, a central control module, a display module, an alarm module and a protection module. The pressure detection unit adopts a main / standby piezoresistive pressure sensor and is installed at the top of the storage tank through a sealing joint, and an independent shielding signal line is sleeved with a metal corrugated pipe to prevent electromagnetic interference and mechanical damage. The signal processing module integrates signal amplification, filtering and analog-to-digital conversion functions and transmits processed data to the central control module. A microcontroller is arranged in the central control module, a pressure threshold value is preset, the main sensor and the standby sensor can be automatically switched, and encrypted data can be stored. The display module displays a pressure value and a curve in real time, and the alarm module realizes multi-level early warning through sound-light alarm and short message notification. Through double-sensor redundancy design, signal anti-interference processing, intelligent fault switching and multiple alarm mechanisms, the precision, stability and safety of pressure detection are remarkably improved.

The dual differential pressure transducer assembly includes a flow path element that defines a fluid channel from an intravenous (IV) fluid inlet to an IV fluid outlet and defines a centerline axis of the assembly. A first sensor cavity and a second sensor cavity are disposed in parallel alongside the fluid channel and are separately connected to the fluid channel via first and second notches through the flow path element across the centerline axis. A first differential pressure sensor and a second differential pressure sensor abut their respective cavities and are exposed to the fluid channel through the notches. Separate signal conductors are electrically connected to the first differential pressure sensor and the second differential pressure sensor and are housed within a common connector cable.

The present invention proposes a safety switch element (1) having a tactile sensor in the form of a switch strip (2) or a switch mat, and having an electrical contact element (7), wherein at least one contact element (7) is connected as an electrode (E) of a capacitive proximity sensor in such a way that capacitive coupling (C(d)) to an surrounding object, in particular capacitive coupling that depends on the distance between such object and the capacitive proximity sensor is measured, and the present invention proposes that the electrical contact elements (7) of the tactile sensor are normally connected as a closed circuit and connected in a way that they conduct electricity to one another, and that a single contact element or a series of contact elements (7) connected in a way that conduct electricity to one another form the electrode (E) of the proximity sensor.

The invention relates to the technical field of steel wire rope metal wire torsion test detection, and particularly discloses a steel wire rope metal wire torsion test device and a test method.The steel wire rope metal wire torsion test device comprises a base frame, a top seat is fixedly installed at the top of the base frame, and a rotary clamping mechanism is fixedly installed on one side of the top of the top seat; by arranging a pressure applying module and a double-sensor monitoring structure, electric adjustment of pressure and real-time acquisition of test data can be realized during use, a pressure applying electric push rod of the pressure applying module pushes a pressure applying frame to ascend, and a pressure applying detection pressure sensor is matched to feed back a pressure value to a control system, so that accurate regulation and control of the pressure are realized; a torsion detection pressure sensor in the transmission module can monitor torsion changes in the torsion process in real time, then the effects of pressure adjustment convenience and data detection automation are achieved, loads do not need to be manually placed, reliable data can be rapidly obtained, and the problems that a traditional device is tedious in pressure adjustment and lacks pressure and torsion detection are solved.

The invention relates to the technical field of vehicle-mounted camera screw locking, in particular to a double-height-detection screw locking mechanism which comprises a carrying frame, one side of the carrying frame is connected with a Z-axis assembly, an electric screwdriver is installed on the surface of the Z-axis assembly, and a screwdriver head is detachably installed at the bottom of the electric screwdriver; a sleeve assembly is arranged on the surface of the carrying frame and located below the electric screwdriver, and a fastening screw is placed at the bottom of the sleeve assembly. A double-height detection assembly is arranged on one side of the carrying frame; a distance adjusting assembly is further arranged on the surface of the carrying frame. A visual positioning assembly is arranged on the surface of the Z-axis assembly. According to the vehicle-mounted camera locking device, the automation degree of the vehicle-mounted camera during screw locking is improved, the problem that manual locking is needed in the prior art is solved, the working efficiency is improved, the locking quality of the vehicle-mounted camera is guaranteed, and the yield is higher; according to the invention, the double sensors are used for detecting the locking height of the screw, the controllable function of the locking precision of the screw is realized, and the automatic control function of the locking torsion can also be realized at the same time.