1916 results about "Single chip" patented technology

The invention relates to the technical field of embedded data storage, and discloses a method and a system for prolonging the service life of a FLASH simulation EEPROM (Electrically Erasable Programmable Read-Only Memory) in a single chip microcomputer, and the method comprises the following steps: firstly, initializing the FLASH, dividing the FLASH into a main data area, a mapping table area, a backup area and a transaction log area, selecting a physical block through a dynamic wear leveling algorithm when data is written, and writing the data into a database; the method comprises the following steps of: starting a backup area or a transaction log area, safely updating a mapping table by using a transaction mechanism, performing cyclic redundancy check when reading data, if the cyclic redundancy check fails, starting cascade recovery from the backup area or the transaction log area, and finally, updating a transaction log to record operation so as to form a closed-loop management process. According to the invention, through a set of dynamic wear leveling and data classification management mechanism, global and uniform distribution of the write load in the storage array is realized, the physical block with the least erasing times is selected during writing, the access frequency of the data can be identified, and cold data which is not changed frequently can be actively migrated.

The invention relates to the technical field of lasers, in particular to a multi-chip vertical external cavity surface emitting laser which comprises a chip set, a first prism, a second prism and an output coupling mirror which are sequentially arranged along a preset central axis. The chipset comprises N gain chips, and the N gain chips output N sub light beams; the N sub-beams pass through the first prism, the sub-beams emitted from the first prism converge towards a preset central axis, the sub-beams are incident to the second prism before convergence and are combined into a resonant beam through the second prism, the resonant beam resonates in a resonant cavity formed by the output coupling mirror and the chip set, and the output coupling mirror and the chip set form a resonant cavity; the output laser is emitted from the output coupling mirror; wherein N is greater than 1. The invention is beneficial for solving the problems that the power of a single chip is limited, the beam combining efficiency is low, only incoherent beam combining can be realized, and a multi-chip beam combining structure is complex.

The invention discloses precise temperature control aging test equipment and a test method thereof.The precise temperature control aging test equipment comprises an electric control box body and a test box body, a test supporting frame is installed in the test box body, and a plurality of aging test plates are installed on the test supporting frame; the aging test board comprises a test circuit substrate and a plurality of aging test modules fixedly installed on the test circuit substrate, each aging test module comprises a test base and a heating control module, a material carrying groove is fixedly formed in each test base, each heating control module comprises an outer shell, a first circuit board, a second circuit board and a temperature measuring sensor, according to the invention, the independent temperature control aging test of a single chip is realized through the plurality of independent modular aging test modules, and the heating circuit and the control circuit are arranged separately, so that the service life of the test circuit is prolonged.

The utility model discloses an intrinsic safety power supply circuit and a fuel electrochemical oxygen analyzer. The intrinsic safety power supply circuit comprises a first MOS tube, a first capacitor, a second capacitor, a first resistor, a first Schottky diode, a first Zener diode and a second Zener diode, the power supply module of the fuel electrochemical oxygen analyzer comprises the intrinsic safety power supply circuit and further comprises a sensor module, an AD conversion module, a key module, a single chip microcomputer module, an analog output module and a display driving module which are connected with the power supply module, and the single chip microcomputer module is connected with the AD conversion module, the key module, the analog output module and the display driving module. The sensor module is connected with the AD conversion module, and the analog output module is connected with external equipment; the fuel electrochemical oxygen analyzer adopts the intrinsically safe power supply circuit to limit the working current and voltage in the circuit so as to control the power consumption of the whole machine, so that explosion prevention is realized, and the fuel electrochemical oxygen analyzer can measure the oxygen concentration in a flammable and explosive environment.

The application provides a kind of intelligent pressure monitoring 3D printing scoliosis orthosis, comprising: first body and second body;One or more inner grooves are respectively provided on the first body and the second body;Front groove is provided on the second body;The inner groove is filled with air bag, and pressure sensor is arranged in the recess of air bag, and pressure pad for contacting the skin of patient is arranged on the pressure sensor;Air tube is connected with inflatable and deflatable inflation pump, and the pressure sensor is connected with single-chip microcomputer arranged in the front groove by connecting line.The scoliosis orthosis according to the application is designed according to 3D scanning and completed by 3D printing, which can realize structure design such as hollowing, groove, trimming and catheter, solve the problem of traditional orthosis such as not breathable, not beautiful, waste material, the first body and the second body are connected by connecting rope, so that the orthosis body has a larger opening angle, which is convenient for patients to put on and take off and bandage pressure increase.

The invention provides an industrial single-chip microcomputer automatic control method based on time sequence event triggering, and the method comprises the steps: carrying out the multi-period sampling and time window division of an original signal inputted by an industrial field sensor or a switching value, and extracting the time distribution characteristics of the signal; performing signal stability judgment and pseudo edge elimination based on the signal time distribution characteristics, and outputting a stable edge event set; performing event confirmation delay and multi-level logic judgment on the stable edge event set to generate a preliminary time sequence trigger signal; environment characteristic data are collected, real-time feedback of an actuator is obtained, and system judgment parameters are dynamically corrected; and generating a control command and verifying an execution result based on the preliminary time sequence trigger signal and actuator feedback, the method can dynamically distinguish real signals and noise under vibration interference, simultaneously ensures the real-time performance and trigger reliability of the system, and solves the problems of insufficient edge detection stability and false trigger phenomenon caused by mechanical vibration.

The invention discloses a method and equipment for offline storage of real-time sensing data based on a Flash ROM (Read Only Memory) in a single chip microcomputer, which are applied to the technical field of data processing.The method comprises the following steps: firstly, receiving carbon dioxide concentration, temperature, humidity and air pressure data by aiming at standardized processing, storage, indexing, time alignment and transmission of multi-parameter sensor data; generating a standard data packet according to the specification of 4-32 bytes, and combining a real-time timestamp with data interval information; on the basis of Flash ROM characteristics, data packets and auxiliary information are written in sequence by taking 64-512 bytes as a unit, and only a new sector is erased before being written in; extracting 12-24 bytes of core index information, circularly storing the core index information in an exclusive sector, and uniformly erasing the core index information when the core index information is fully written; a data address is positioned through an index, time recovery after interruption is achieved through timestamp nonvolatile storage, and data and time are accurately aligned; and finally, uploading the data to a mobile phone APP through Bluetooth, receiving an APP time synchronization RTC module, and completing whole-process data management and interaction.

The invention discloses a self-calibration and self-recovery method for an MEMS gas sensor, relates to the technical field of gas sensors, and solves the problem that in the prior art, once the sensor is mounted, the sensor is difficult to detach for calibration. According to the invention, the storage chip in which data is not lost after power failure is used as a parameter storage medium, the MCU reads parameters from the storage chip after initialization starting each time, timing is carried out according to a timer in the MCU, and automatic calibration is carried out each time set time is reached, so that the problem that data of a traditional single-chip microcomputer chip is easy to lose is avoided, and the reliability of a system is ensured. In addition, due to the fact that the off-chip storage chip is used, even if the system is powered off and stops working due to some reasons in the working process, stored parameters cannot be lost, and stability of the system is guaranteed. In addition, according to the invention, a timer is also utilized, under the condition that the system works normally, parameters are self-calibrated every 72 hours, and the problem that the system precision is reduced due to zero drift in long-term work is avoided.

An on-line program control excitation power supply with quench protection for a high-temperature superconducting magnet comprises a single-chip microcomputer for receiving control data, outputting control voltage through digital-to-analog conversion (DAC) of the single-chip microcomputer, and magnetizing a magnet coil through current stepping; a sampling signal is output to the liquid crystal screen to display corresponding voltage and current values in real time after being processed by the single-chip microcomputer analog-to-digital conversion ADC; voltage signals at the two ends of the magnet coil are sampled and returned to the single-chip microcomputer to be processed, when high voltage occurs, it is judged that the voltage signals are abnormal voltage signals, quench protection is carried out, the single-chip microcomputer outputs control signals to cut off connection between the magnet coil and the excitation power source, and residual energy of the magnet coil is released through the high-power thyristor. The provided excitation power supply has the characteristics of high power, high stability, good repeatability and good linearity; performing numerical control stepping output, gradually applying current to the superconducting coil, and slowly establishing a magnetic field; effective quench protection is achieved, and it is guaranteed that a magnet coil is not damaged by quench.

The invention provides a 2D laser radar layered shielding and stepless speed regulation collaborative obstacle avoidance system, which comprises a 2D laser radar device, an industrial personal computer, a single chip microcomputer, a motor control unit, a 2Dslab positioning module and a layered collaborative obstacle avoidance module, according to the module, efficient obstacle avoidance is realized through a four-layer collaborative architecture; comprising a user interaction layer for providing a graphical configuration interface, a map fusion shielding layer for realizing static barrier shielding based on a positioning map, and a dynamic deceleration area sensing layer for dynamically adjusting the sensing range according to the real-time speed and acceleration of a mobile robot, and the stepless speed regulation control layer is used for constructing a speed continuous mapping model to realize smooth transition of the near-obstacle process. According to the invention, through the synergistic effect among the stepless speed regulation control layer, the dynamic deceleration area sensing layer, the map fusion shielding layer and the user interaction layer, the smoothness, the adaptability and the intelligence of the obstacle avoidance decision are realized.

The invention relates to a CAN bus control type PS I5 transceiver module which comprises a main control module, a communication interface is composed of a CAN communication module and a serial port, the CAN communication module is used for communicating with other equipment, and the main control module is connected with an upper computer through the serial port for communication; the power supply module reduces the direct-current 12V voltage to the working voltage of the single chip microcomputer to supply power to the main control module; the PS I 5 transceiver chip is respectively connected with the sensor and the main control module, and is used for receiving a Manchester encoding electric signal of a PS I 5 bus and sending an electric signal conforming to the PS I 5 standard to the sensor; the master control module is used for receiving and storing sensor data corresponding to different states and events. Compared with the prior art, CAN and serial communication are combined with a power-down storage state flag bit, so that the equipment can be compatible with a plurality of pieces of equipment for coordinating work. The non-PS I5 production equipment can be refitted into PS I5 sensor production equipment as long as the non-PS I5 production equipment is provided with a CAN communication interface, reading, configuration, analysis and diagnosis of a PS I5 sensor can be carried out, and the production link of the PS I5 sensor is effectively supported.

The invention discloses a selector unit for dynamic switching of a standard unit, a ring oscillator and a test structure. Wherein the selector unit is connected in parallel with standard units with different threshold voltages, driving capabilities and logic functions, and is matched with the first switch control circuit, so that flexible switching of the differentiated standard units is realized, and the static architecture limitation of a traditional test circuit is broken through; according to the ring oscillator, a selector unit is embedded into a closed oscillation loop of a standard unit chain, a time sequence path of multiple unit combinations is formed through dynamic configuration, and the delay superposition effect between mixing units in an actual circuit is effectively simulated; the test structure is based on the configurable characteristic of the ring oscillator, combines a pin sharing mechanism of the first control signal multiplexing module, realizes parallel test of multiple unit combinations in a single chip, and eliminates multi-chip separate test requirements, so that a high-efficiency and high-coverage standard unit delay detection system is realized under the constraint of hardware resources, and the test efficiency is improved. And a verification basis is provided for deviation analysis of the process simulation model.

A method for measuring the dynamic frequency of a high-precision crystal oscillator comprises the following steps: 1) setting a target frequency on an upper computer, communicating with a single chip microcomputer in a lower computer through a serial port, and sending the target frequency to the lower computer; and 2) acquiring a signal of the tested wafer in the alternating electric field. And 3) making a frequency lookup table. And 4) calibrating the signal of the tested wafer. And 5) carrying out AD conversion on the calibrated voltage signal, outputting a code of the calibrated voltage signal to a single-chip microcomputer, finding out a frequency corresponding to the code, sending the frequency to an upper computer through a serial port, and displaying the measured frequency of the quartz wafer. According to the invention, high-precision and low-cost frequency measurement can be realized.

The invention relates to a continuous blood glucose monitoring circuit, which takes a 32-bit ARM (Advanced RISC Machines) processor of an STM32F407 singlechip as a main controller and an ADS131A04 high-precision synchronous sampling ADC (Analog to Digital Converter) chip as a core, comprises a main control circuit, a signal acquisition circuit, a constant potential circuit, a constant current circuit and a power supply circuit, is connected with a blood glucose sensor by adopting an FPC (Flexible Printed Circuit) connector, and is used for continuously monitoring blood glucose under the condition of constant current stimulation and constant voltage. The output signal of the sensor is collected in real time, and after the main control processes the data, the collected data is stored in the MicroSD card and is displayed on the screen at the same time. Intelligent control over the continuous blood glucose monitoring system is achieved by means of the high running speed and rich interface resources of the STM32F407; the multi-channel design can monitor relevant ion concentration parameters while collecting blood glucose signals, and can accurately monitor the blood glucose and the relevant ion concentration of a human body and correct the blood glucose signals in cooperation with a blood glucose sensor.

The utility model belongs to the technical field of bird breeding, and relates to a multi-sensor controlled intelligent parrot brooding box which comprises a cuboid box body, a sensor box arranged on the inner side wall of the box body and opposite to a box door, a control display box arranged above the box door, and an air inlet fan arranged above the outer side wall of the box body. The switching power supply box is fixed on the inner side wall of the box body and is communicated with the air inlet fan; the ultrasonic humidifier is arranged on the side wall of the box body; wherein two ends of the sensor box are respectively provided with a sensor box air inlet hole and a sensor box air outlet hole, the built-in air filtering sponge covers the sensor box air inlet hole, and the sensor box air inlet fan is fixedly arranged at one end where the sensor box air inlet hole is located and is adjacent to the air filtering sponge; the temperature and humidity sensor and the carbon dioxide sensor are arranged on the inner wall of the sensor box; a single-chip microcomputer is arranged in the control display box, and a liquid crystal screen is arranged outside the control display box. The environment in the brooding box is intelligently controlled through the single chip microcomputer, and the growth and development and breeding production efficiency of nestlings is improved.

The invention discloses an electric meter sampling filter chip and system integrated with a programmable anti-aliasing filter, and relates to the field of electric energy metering chips, the electric meter sampling filter chip comprises a programmable anti-aliasing filter module, a digital control and interface module and a cooperative control unit, through binary weighted control of a switched capacitor array, the cut-off frequency can be dynamically adjusted within the range of 1 kHz to 100 kHz, and the cut-off frequency can be adjusted within the range of 1 kHz to 100 kHz. Switching of a Bessel mode, a Butterworth mode and a Chebyshev mode is physically achieved by reconstructing a feedback network, a programmable AAF, an ADC, control logic and a digital interface are integrated into a single chip, and the number of external elements such as an RC network and an operational amplifier is reduced; aDC sampling data is analyzed through FFT, the signal-to-noise ratio is calculated in real time, the filter mode is automatically switched, a hardware interrupt pin triggers notification after configuration is completed, MCU polling is replaced, and frequency response is ensured to be accurate and controllable through laser trimming of a switched capacitor array.

The invention discloses a pre-distortion calibration method and system based on a single chip microcomputer, a medium and a product, and relates to the field of radio frequency front ends. The method comprises the following steps: extracting an instantaneous amplitude value of an input signal sequence to obtain a first envelope to represent instantaneous nonlinearity; the periodic average power of the input signal is calculated and filtered through timer interruption, and a second envelope representing the heat effect is obtained. According to the method, the first envelope and the second envelope serve as double indexes, the preset two-dimensional lookup table is inquired, so that the pre-distortion calibration coefficient capable of being matched with the instantaneous nonlinearity and the thermal memory effect of the power amplifier at the same time is determined, and the input signal is calibrated. In addition, a feedback signal output by the power amplifier is obtained to calculate a distortion calibration error, and the two-dimensional lookup table is adaptively updated according to the error. According to the scheme, a composite calibration model is constructed on a low-cost single-chip microcomputer platform, and the accuracy and stability of nonlinear pre-distortion calibration of the power amplifier are guaranteed.

The invention is suitable for the technical field of broken yarn detection, and provides a broken yarn detection system based on three-dimensional measurement, the broken yarn detection system comprises a laser mechanism, a camera array, an encoder, a single-chip microcomputer and a host, the laser mechanism is used for emitting a linear laser to irradiate a running yarn group, a highlight bright spot is formed on each yarn of the yarn group, and the camera array is used for detecting the broken yarn. The camera array is used for collecting bright spot images of a silk yarn group, the encoder is installed on a main shaft motor of the textile equipment and used for generating continuous pulse signals along with rotation of the main shaft motor, and the single chip microcomputer is in communication connection with the encoder and generates trigger signals of the images collected by the camera. High-brightness bright spot features are formed on each silk thread through linear laser, the three-dimensional space position of the silk thread is reconstructed in combination with image information collected by a camera array, the running state of the multiple rows of silk threads sequentially arranged in the depth direction of the optical axis of the laser can be recognized, and the possibility of missing detection caused by mutual shielding of the silk threads in the front row and the rear row is reduced.

The invention relates to the technical field of Mini-LED chip detection, and discloses a Mini-LED repair method and device based on automatic optical detection, and the method comprises the steps: carrying out the Gaussian filtering of an optical chip image, obtaining a filtered chip image, training a neural network based on an original chip image set, obtaining a defect region detection model, and carrying out the detection of a defect region. Detecting the filter chip image according to the defect area detection model to obtain a defect image area group, if the defect image area group is not a null set, marking a to-be-repaired product as a repairable product, carrying out local contrast enhancement on the filter chip image to obtain a target chip image, carrying out single chip identification on the target chip image, and if the defect image area group is not a null set, marking the to-be-repaired product as a repairable product; and obtaining a single chip area set, identifying a to-be-maintained chip area group according to the single chip area set, and generating a repair opinion report based on the to-be-maintained chip area group. According to the invention, the precision of Mini-LED product defect detection can be improved, and the manpower consumption of Mini-LED products can be reduced.

The invention is suitable for the technical field of semiconductor LED display, and provides a high-color-gamut LED chip structure and a preparation method thereof. The high-color-gamut LED chip structure comprises a substrate material, a buffer layer, a first semiconductor layer, a green wave quantum well layer, an electron hole adjusting layer, a blue wave quantum well layer, a second semiconductor layer, a current blocking layer and a current expansion layer which are sequentially arranged from bottom to top, and further comprises a first metal electrode layer, a second metal electrode layer and a transparent insulating layer. The electron hole adjusting layer is used for controlling the distribution of electrons and holes in the green wave quantum well layer and the blue wave quantum well layer so as to adjust the wavelength and the spectral intensity of emergent light of the green wave quantum well layer; through introduction of the electron hole adjusting layer, the wavelength of a long wave and the corresponding spectral intensity can be effectively controlled, two wavelengths can be emitted from a single chip, and through introduction of double waves, the color gamut of a display screen can be improved.

The present application provides a heterogeneously integrated photonic chip, a heterogeneous integration method, a system, and an optical communication device. The heterogeneously integrated photonic chip comprises a first wafer and a second wafer, wherein: the second wafer is integrated above the first wafer; the first wafer comprises a first substrate layer and an electro-optic material layer disposed on one side of the first substrate layer; and the second wafer comprises a silicon base layer arranged on the side of the electro-optic material layer away from the first substrate layer. In the present application, by integrating the second wafer above the first wafer, with the first wafer comprising an electro-optic material layer, and the second wafer comprising a silicon base layer, the integration of two heterogeneous materials, the electro-optic material layer and the silicon base layer, on a single chip is achieved. This heterogeneously integrated photonic chip has the advantage of high integration. Additionally, the electro-optic material layer can form a high-speed electro-optic modulator, and silicon materials have well-established device integration technologies in the semiconductor field. By integrating the electro-optic material layer and the silicon base layer in this heterogeneously integrated chip, the performance of the heterogeneously integrated chip can be improved.

The utility model belongs to the technical field of chip testing, and particularly relates to a chip aging testing device. The chip aging test device comprises an aging plate and a plurality of temperature control units, a plurality of connecting pieces are arranged on the aging plate, each temperature control unit comprises an air volume control device, a heating device and a temperature detection device, the heating device comprises a heating chamber and a heating device, and the heating device and the temperature detection device are arranged in the heating chamber; the heating chamber is provided with an air inlet and an air outlet. The air volume control device is used for adjusting the opening degree of the air inlet. And each connecting piece can be electrically connected with the chip to be tested in the heating chamber of one temperature control unit, so that the burn-in board can test the operation parameters of the chip to be tested at the target temperature. When cold air flows into the heating chamber of each temperature control unit, the opening degree of the air inlet is adjusted through the corresponding air volume control device so as to control the air volume introduced into the corresponding heating chamber, so that cooling is performed according to the operating temperature of each chip to be tested, and accurate temperature control adjustment of the single chip is realized.

The present invention relates to a chip for multiple hash computations based on rolling and unrolling, and more specifically, to a single chip for multiple hash computations in which multiple SHA-256 hash computations for finding hash values over a plurality of unrolled versions are simultaneously performed and the hash computations for each of the plurality of unrolled versions are repeatedly executed by rolling entire nonces, thereby reducing area and energy consumption of the chip while improving hash rate.

The invention discloses a single-chip tactile or stress sensing active array and application thereof, and belongs to the field of chip application, the single-chip tactile or stress sensing active array comprises a single chip, the chip is provided with a stress sensing unit, the stress sensing unit is used for sensing stress changes and converting the stress changes into digital signals through an ADC, and the digital signals are output through a digital port of the chip; the circuit connection element has a circuit connection function and is used for realizing circuit connection; a plurality of chips form a chip array which is welded on the first surface of the circuit connecting element. The active array further comprises a reinforcing plate and a flexible covering layer, the reinforcing plate is located on the second face of the circuit connecting element, and the flexible covering layer covers the chip array and is used for sensing a stress field. When a finger touches the flexible covering layer, stress can be generated on the chip, signals are led out through the circuit connecting element and processed to perceive touch sense, each node in the chip array completes signal digitization on the single chip in the node, and signal interference caused by a lead is avoided.

The invention provides a vehicle chassis domain controller and a vehicle. The vehicle chassis domain controller comprises at least one single chip microcomputer, a motor driving module and a shock absorber electromagnetic coil driving module. The input end of the motor driving module is connected with the single-chip microcomputer, the output end of the motor driving module is connected with a motor in a vehicle brake circuit, and the motor driving module is used for driving and controlling the working state of the motor so as to adjust the brake pressure of wheels. The input end of the shock absorber electromagnetic coil driving module is connected with the single-chip microcomputer, the output end of the shock absorber electromagnetic coil driving module is connected with a shock absorber, and the shock absorber electromagnetic coil driving module is used for driving and controlling the target current of an electromagnetic coil of the shock absorber according to the first driving control signal received from the single-chip microcomputer so as to adjust the damping force of the shock absorber. The motor driving module and the shock absorber electromagnetic coil driving module are integrated in one controller, so that the performance of the electric control shock absorber system can be improved, and meanwhile, the original functions of the electric control braking system and the electric control shock absorber system cannot be influenced.

The invention discloses a digital-to-analog converter interface circuit supporting LVDS / CMOS dual-mode input. The digital-to-analog converter interface circuit comprises an ESD protection circuit, a DEMUX multiplexer, an MUX multiplexer, an LVDS receiver, an inverter chain and a digital logic circuit. The output end of the ESD protection circuit is connected with the DEMUX demultiplexer; the digital logic circuit is used for generating a synchronous control signal according to an external mode switching signal and coordinating the working state of each module; the DEMUX demultiplexer distributes an input signal output by the ESD protection circuit to a corresponding signal processing path under the action of a control signal output by the digital logic circuit; the LVDS receiver receives the LVDS signal, converts the LVDS signal into a single-ended CMOS signal, and outputs the single-ended CMOS signal to the MUX multiplexer; the inverter chain is used for receiving a CMOS signal; and the MUX multiplexer outputs a control signal according to the digital logic circuit, so that one of the two paths of input signals is selected to be output to the DAC core circuit. According to the invention, LVDS / CMOS dual-mode input is efficiently supported in a single chip, and meanwhile, the requirements of high speed, low power consumption and time sequence consistency are met.

The invention discloses a PTP clock synchronization implementation method based on sliding mode control calibration, and the method comprises the steps: designing master and slave clock synchronization equipment, designing a slave clock into two DP83640 pieces for eliminating the problem of insufficient adjustment resolution of a local clock of a single chip, calculating the clock deviation through message transmission by the master and slave clocks, and carrying out the initial adjustment and compensation of the local clock, after preliminary adjustment is completed, a high-precision time interval counter is used for finely measuring master-slave clock skew, the master-slave clock skew is input into a designed sliding mode controller to generate a calibration control quantity, the clock skew is finely calibrated according to the calibration control quantity, and more accurate clock synchronization is completed. Experimental results show that the method provided by the invention can realize synchronization precision superior to 300ps, and has great reference value.

The invention discloses a soil surface moisture measurement sensor based on a phase detection principle, and relates to the field of soil moisture measurement, and the soil surface moisture measurement sensor comprises a single-chip microcomputer, a sensor main body and a plurality of probe groups; the plurality of probe groups are arranged in different soil layers; the single-chip microcomputer is used for outputting an acquisition signal and a gating signal. The sensor main body is connected with the single-chip microcomputer and is used for receiving an acquisition signal and a gating signal sent by the single-chip microcomputer, outputting a measurement signal according to the acquisition signal and controlling the probe group in the corresponding soil layer to be conducted according to the gating signal; the probe group is connected with the sensor main body and is used for outputting a feedback signal according to the measurement signal; the sensor main body is also used for obtaining a signal phase difference according to the feedback signal and the measurement signal; the single-chip microcomputer is further used for obtaining the soil water content according to the signal phase difference information The soil surface moisture measurement is realized, the multi-point soil moisture measurement efficiency is improved, and the soil moisture measurement cost is reduced.

The invention provides an automatic detection system for anti-radiation performance of a lead garment, a lead garment hanger adopts a humanoid structure design and is used for simulating the condition that the lead garment is worn in a human body posture, a plurality of X-ray detectors are arranged on the outer surface of the lead garment hanger and are used for detecting the X-ray penetration position and measuring the X-rays, and the X-ray detector is used for detecting the radiation resistance of the lead garment. The rack guide rail is detachably assembled on a CT operation site and arranged at the bottom of the lead clothes hanger, the lead clothes hanger can reciprocate along the rack guide rail through a first driving motor and can rotate circumferentially through a second driving motor, and the main control module comprises a single chip microcomputer and is used for controlling the lead clothes hanger to move horizontally and rotate. And the X-ray penetration position and the X-ray measurement in the lead clothes are determined through fitting calculation. According to the lead clothes damage detection method, the lead clothes damage detection method during wearing by simulating the human body posture can be realized, the authenticity and reliability of lead clothes damage detection are effectively improved, and unnecessary damage of rays to the human body caused by internal damage of the lead clothes is prevented.

The invention discloses a device and method for calibrating an alternating current signal sensor, and belongs to the technical field of semiconductor equipment detection, and the device for calibrating the alternating current signal sensor comprises a radio frequency conduction module, a signal processing module and a shielding grounding module, the radio frequency conduction module establishes a radio frequency energy transmission channel with 50 ohm impedance through a conductive column and a symmetrical radio frequency interface; the signal processing module comprises a single-chip microcomputer unit and a communication interface, calculates real current and voltage values through a power value formula, and achieves calibration parameter fitting. The shielding grounding module constructs an electromagnetic shielding environment through the aluminum alloy shell and the elastic conductive clamp. The circuit has the advantages of low cost, no need of an external calibration piece, high interference resistance, support of high power and full-band (50Hz-30MHz) application and the like, is suitable for semiconductor equipment and power devices, and improves the calibration precision and efficiency.