383 results about "Analog front-end" patented technology

The various implementations described herein include techniques and apparatuses for multi-channel biopotential signal acquisition, biopotential signal pre-processing, and adaptive signal conditioning. In one aspect, an analog frontend circuit includes an instrumentation amplifier (INA) and an analog-to-digital circuit (ADC) in a forward signal path. A digital circuit receives input from the ADC. An adaptive baseline tracking and compensation circuit tracks and compensates moving motion artifact driven changes. A power line interference (PLI) detection and compensation circuit tracks a desired number of PLI harmonics, and magnitude, phase and frequency for the PLI harmonics in real time. A digital-to-analog converter (DAC) circuit combines output of the adaptive baseline tracking and compensation circuit and the PLI detection and compensation circuit to output an analog output. A passive filter receives the analog output and drives an analog compensation signal at an input of the INA.

In one embodiment, a first die comprises: a first die-to-die adapter to communicate with first protocol layer circuitry via a flit-aware die-to-die interface (FDI) and first physical layer circuitry via a raw die-to-die interface (RDI), where the first die-to-die adapter is to receive message information comprising first information of a first interconnect protocol; and the first physical layer circuitry coupled to the first die-to-die adapter. The first physical layer circuitry may be configured to receive and output the first information to a second die via an interconnect, the first physical layer circuitry comprising a plurality of modules, each of the plurality of modules comprising an analog front end having transmitter circuitry and receiver circuitry. Other embodiments are described and claimed.

The invention discloses an LPO wired receiver adopting adaptive CTLE based on a genetic algorithm, and the receiver comprises an analog front end, a data sampler, an edge sampler, an error sampler, a 1: 32 demultiplexer, a verification module, an eye pattern monitor, a genetic algorithm module, clock recovery logic, and a clock path. The eye pattern monitor is used for calculating the eye pattern closure degree according to the data of the data sampler and the error of the error sampler and outputting the eye pattern closure degree to the genetic algorithm module; and the genetic algorithm module is used for realizing parameter adaptive control of a continuous time linear equalizer CTLE and a variable gain amplifier VGA in the analog front end. The invention aims to apply the genetic algorithm to the adaptive equalization of the adaptive continuous time linear equalizer, so that the adaptive continuous time linear equalizer has stronger global search capability and lower power consumption and is not easy to fall into local optimum, and the complexity and power consumption of the adaptive continuous time linear equalizer are reduced. And the real-time and energy-saving requirements are met.

The invention discloses an active pen and touch screen interaction system resistant to common-mode interference and a signal demodulation method. The system comprises a signal receiving terminal and a signal transmitting terminal. The signal transmitting terminal modulates data to be transmitted by adopting a differential binary phase shift keying modulation method, and transmits a generated modulation signal to the signal receiving terminal; the analog front-end receiving module is coupled with the signal transmitting terminal, receives the modulation signal and outputs a digital square wave signal after fidelity extraction processing; and the digital demodulation processing module performs differential coherent digital demodulation on the digital square wave signal based on the prior characteristics of the modulation signal, inhibits residual noise and recovers data to be sent. The analog front end focuses strong common-mode noise suppression and analog filtering, the digital demodulation algorithm performs secondary digital purification by using signal time sequence characteristics, and the two constructs an efficient anti-interference pipeline. Meanwhile, the regular square wave signals can be directly processed through differential coherent demodulation, and the requirements for performance and power consumption of a rear-end processor are lowered.

The invention discloses a wearable electrocardiogram monitoring method based on composite lead and intelligent reconstruction. Belongs to the technical field of medical signal processing and wearable medical instruments, and solves the technical problems of insufficient multi-lead information amount, poor lead stability, motion artifact interference, unreliable missing lead complementation and the like of the existing wearable electrocardio equipment. According to the technical scheme, the method comprises the steps that a plurality of non-inductive electrodes are arranged on a trunk to achieve multi-channel collection of composite leads; the front end uses an analog front end (AFE); multi-stage denoising is carried out cooperatively at the equipment end and the edge end; when the lead is missing or poor in quality, complementing the lead by using a deep reconstruction network of cross-lead attention and fuzzy gating; and finally, inputting the purified or reconstructed electrocardiosignal into a multi-label deep learning classifier. According to the method, the wearing comfort, the information integrity, the transmission efficiency and the real-time diagnosis capability are considered, and the method is suitable for multi-scene long-time electrocardiogram monitoring and early warning in families, hospitals, exercise rehabilitation and the like.

The invention relates to the technical field of wireless communication and signal processing, in particular to a short-wave spectrum efficient sampling method and system based on compressed sensing, and the method comprises the steps: collecting full-band power spectrum density data through a low-speed scanning receiver; determining a strong interference frequency point set; generating a binary null observation sequence; loading the binary null observation sequence to an analog front-end frequency mixing circuit, performing analog domain orthogonal frequency mixing and integral processing on the input radio frequency signal, and outputting a voltage sampling value; resolving to obtain a signal sparse coefficient through a compressed sensing reconstruction algorithm; calculating a reconstruction residual error according to the voltage sampling value and the signal sparse coefficient; in response to the condition that the reconstruction residual error is greater than a preset error threshold, triggering a reacquisition process of the power spectral density data; outputting a signal sparse coefficient in response to the condition that the reconstruction residual error is smaller than or equal to a preset error threshold; according to the invention, the problems of limited dynamic range and weak signal submerging are solved, and the receiving sensitivity of weak signals in a strong interference environment is obviously improved.

The invention discloses an AFE analog front-end circuit applied to a multi-channel high-speed optical receiver. The circuit comprises an SF-TIA, a single-ended to differential circuit and a CLTE. The SF-TIA, the single-ended to differential circuit and the CLTE are connected in sequence; the SF-TIA is used for converting an input current signal into a voltage signal and transmitting the voltage signal to the single-ended to differential circuit; wherein the current signal is obtained by converting an input optical signal; the single-ended to differential circuit is used for converting the voltage signal into a differential voltage signal and transmitting the differential voltage signal to the CLTE; and the CLTE is used for compensating the high-frequency gain of the differential voltage signal to obtain a compensated voltage signal and outputting the compensated voltage signal. The amplifier has the advantages of being high in gain, low in power consumption, low in input impedance, low in noise, low in requirement for power supply voltage and simple in structure.

The invention discloses a high-precision magnetic field data acquisition unit for aeromagnetic measurement and an acquisition method thereof, belongs to the technical field of aeromagnetic measurement, and solves the problems that the acquisition resolution of an aeromagnetic measurement magnetic field is low, the measurement precision is influenced by a power supply and electromagnetic interference, and the data processing and storage reliability is insufficient. According to the invention, a framework of'acquisition module + control module 'is adopted, the acquisition module realizes high-precision sampling through low-noise power supply, differential reference and analog front-end full-link conditioning, the control module completes error compensation and aeromagnetic compensation through a Zynq core, and the 1nT-level magnetic field acquisition precision is achieved by matching an anti-interference design and stable storage and transmission. The 1nT-level magnetic field acquisition precision in the aeromagnetic measurement process is achieved, the signal acquisition precision and stability are remarkably improved, electromagnetic and power interference is effectively inhibited, the reliability of data processing, storage and transmission is guaranteed, and the strict requirements of aeromagnetic measurement for precision and interference resistance are met.

The various implementations described herein include techniques and apparatuses for multi-channel biopotential signal acquisition, biopotential signal pre-processing, and adaptive signal conditioning. In one aspect, an analog frontend circuit includes an instrumentation amplifier (INA) and an analog-to-digital circuit (ADC) in a forward signal path. A digital circuit receives input from the ADC. An adaptive baseline tracking and compensation circuit tracks and compensates moving motion artifact driven changes. A power line interference (PLI) detection and compensation circuit tracks a desired number of PLI harmonics, and magnitude, phase and frequency for the PLI harmonics in real time. A digital-to-analog converter (DAC) circuit combines output of the adaptive baseline tracking and compensation circuit and the PLI detection and compensation circuit to output an analog output. A passive filter receives the analog output and drives an analog compensation signal at an input of the INA.

The utility model relates to the technical field of electric vehicles, in particular to a battery module controller and a battery pack. The battery module controller comprises a flexible circuit board and a battery cell monitoring controller; the battery cell monitoring controller comprises a printed circuit board and an analog front-end chip integrated on the printed circuit board; the flexible circuit board is connected with the printed circuit board, and the flexible circuit board is used for collecting temperature information and voltage information of the battery module and transmitting the collected temperature information and voltage information to the analog front-end chip for processing through the printed circuit board. According to the battery module controller and the battery pack, the problems that in a CMC system layout in an existing scheme, the whole CMC occupies a large space, the surface utilization rate of a PCB is not high, production waste is too much, and the weight of the PCB is large are solved.

An analog frontend architecture for a capacitive pressure sensor. The analog frontend architecture includes a low-noise amplifier unit for low-noise amplification of sensor signals of the capacitive pressure sensor, the low-noise amplifier unit including a first integrator unit and a second integrator unit, the first integrator unit being connected to input terminals of the low-noise amplifier unit, being designed as a boxcar integrator, and being configured to amplify sensor signals of the capacitive pressure sensor according to the boxcar integration technique, and the second integrator unit being connected to output terminals of the low-noise amplifier unit and being configured to integrate the amplified voltage signals of the first integrator unit.

The invention discloses a coherent accumulation measurement method of an S-mode low-power signal and related equipment, and relates to the field of aviation communication signal measurement. Comprising the following steps: performing noise statistics and baseline calibration on digital I / Q sampling data filtered and amplified by an analog front end to obtain a noise mean value and a noise standard deviation; setting a detection threshold value based on the noise standard deviation, and performing sliding correlation on the net signal and the S-mode lead pulse reference template to capture the lead pulse; taking the capturing moment as a starting point, intercepting a preset-frame-length signal sequence covering the S-mode leading pulse and the data segment from the net signal, and distinguishing an S-mode complete frame and an A / C-mode short pulse string through dual-threshold verification; and performing coherent accumulation on the I-path and Q-path sampling points in the complete frame according to a complex number form to obtain a coherent accumulation result, and calculating the average power of the S-mode low-power signal according to the coherent accumulation result. Accurate measurement of an extremely weak S-mode response signal can be realized under a noise background.

According to an embodiment, a biopotential measurement system includes an analog front-end and digital circuits. The analog front-end circuit includes a sensing electrode, a forward amplifier, and a feedback amplifier with an integration capacitor. A feature is the attenuation circuit between the forward and feedback amplifiers, which provides an attenuation factor determining the integration capacitor's value for achieving the desired high-pass corner frequency. With configurable attenuation factors, the system can process different biopotential signals. Multiple analog front-end circuits can be used to process different signals simultaneously. The digital circuit includes a processor for signal processing, dynamic adjustment of attenuation factors, and anomaly detection. Additional components like switched capacitors, pseudo-resistors, and multiplexers can enhance the system's functionality. The design allows flexible, multi-parameter physiological monitoring with adjustable frequency responses and gain settings.

The invention discloses a real-time ultrafast ultrasonic image reconstruction system and method based on an FPGA, and the system comprises an analog front-end collection chip, the FPGA, and an upper computer which is used for transmitting collected multi-channel ultrasonic data to the FPGA through the analog front-end collection chip, receiving a control command sent by the FPGA, and transmitting the control command to the FPGA through the upper computer. And the FPGA performs data preprocessing, beam forming calculation and image post-processing on the multi-channel ultrasonic data, processes a received command and an external trigger signal, and uploads inter-board cascade communication and an image sampling and processing result to an upper computer for real-time display. According to the invention, real-time acquisition of high-channel ultrafast ultrasonic signals and medical ultrafast ultrasonic image reconstruction can be realized, equipment cascading is supported, the data processing speed is high, the bandwidth is high, the number of channels is large, the system can be expanded, real-time reconstruction can be directly carried out on an FPGA, and the ultrasonic image reconstruction rate is greatly improved.

The invention provides a wearable patch based on flexible ultrasonic sensing and a use method, and relates to the field of medical monitoring equipment. The sensor comprises a sensing module, a self-adaptive signal processing module and a wireless data transmission module which are packaged by a flexible material and form an integrated flexible packaging layer, the sensing module comprises an ultrasonic transducer array, and the ultrasonic transducer array comprises a plurality of ultrasonic transducers; an ultrasonic transducer; the adaptive signal processing module comprises a microprocessor, an analog front end and a digital signal processor. Through fusion of a flexible electronic technology and ultrasonic sensing, the technical limitation of traditional rigid equipment is broken through, wearable, continuous and non-invasive blood pressure and blood flow synchronous monitoring is achieved, and an important technical scheme is provided for cardiovascular health management, disease early diagnosis and personalized medical treatment.

A device includes a receiver analog front-end circuit including a path shared by an internal loopback current path and a calibration current path, wherein the receiver analog front-end circuit is configured to perform an internal test using the internal loopback current path while in a test mode, and equalize a first data signal while in a normal mode, the equalizing the first data signal including removing an offset from the first data signal using the calibration current path.

A pulse amplitude modulation 4-level (PAM-4) physical layer (PHY) serializer / deserializer (SerDes) receiver is provided. The receiver may include an analog-front-end (AFE) block to receive a transmit signal, an analog-to-digital converter (ADC) block to convert the transmit signal into a digital signal at sampling intervals defined by a sampling clock signal, a clock and data recovery (CDR) circuit to receive the digital signal from the ADC block and extract a recovered clock signal and a recovered data stream, the recovered data stream containing a sequence of symbols with amplitude values corresponding to four levels of PAM-4, a phase integrator (PI) to generate the sampling clock signal for the ADC block based on the recovered clock signal, and a feedforward phase correction (FFPC) block to receive the recovered data stream and generate a receive signal.

The invention discloses a BMS Bluetooth secure communication method and system based on SM2 key agreement, and the method comprises the following steps: constructing a BMS Bluetooth secure communication architecture composed of a battery analog front end (AFE), a low-power-consumption Bluetooth SOC and a secure coprocessor, and writing an SM2 static private key and a device ID in a secure storage unit; after a user terminal initiates a BLE connection request, a security coprocessor sends a wake-up instruction and generates a temporary SM2 private key dT, and then point multiplication operation is executed to generate a temporary public key PT; and sending to a user terminal through a BLE link, performing format analysis and elliptic curve equation verification, executing an SM2 key agreement protocol after confirming that the information is legal, calculating to obtain a shared key material Z, performing re-verification, and if the verification is effective, establishing an AES encryption communication link, monitoring abnormity, clearing sensitive information and performing whole-process closed-loop management on the dynamic session key K. According to the invention, the security and reliability of BMS Bluetooth communication can be improved.

The invention relates to the technical field of channelized receiver management, in particular to a dynamic range channelized receiver method and system based on a block floating point and AGC (Automatic Gain Control), in the system, an automatic gain control module is used for detecting the power of an obtained intermediate frequency analog signal, generating an AGC voltage corresponding to the intermediate frequency analog signal and feeding back the AGC voltage to an analog front end; and dynamically updating the gain of the variable gain amplifier in the radio frequency signal preprocessing process. According to the invention, each channel has independent block floating point gain control, and the channels do not interfere with each other, so that parallel signal-to-noise ratio processing is realized; meanwhile, a complete gain control history is constructed by jointly recording the AGC gain and block floating point processing, data support is provided for recovering the original absolute power value of the signal in each channel, and the contradiction between gain control and information reservation is solved to a certain extent.

This invention discloses a high-overload data analysis method and system based on multi-dimensional buffer protection, relating to the field of data acquisition and storage technology. The system consists of several functional modules, including: a transient impedance module, which acquires stress wave propagation parameters and material strain data collected in real time by the recorder node, constructs a dynamic digital twin model of the buffer structure, and outputs impact feature vectors and stress field distribution matrices; a signal reconstruction module, which dynamically configures the sensing signals based on the impact feature vectors, including the gain, bandwidth, and filtering parameters of the analog front end, conditions and performs analog-to-digital conversion on the sensing signals, and uses compressed sensing and dictionary learning algorithms to sparsely reconstruct abnormal data, generating a high-fidelity data stream and storage data integrity identifiers for each storage block; and a federated storage module, which inputs the stress field distribution matrix and storage data integrity identifiers into the edge-side reinforcement learning decision engine to calculate the failure risk probability of each storage block.

This disclosure relates to a large dynamic range radiation detector and method that simultaneously achieves particle counting and energy integration. The radiation detector includes one or more detection channels, each channel comprising: a sensor, an analog front-end circuit, an analog-to-digital converter, a digital counting module, and a charge integration module. The sensor converts incident radiation into a current signal, the radiation including rays or particles. The analog front-end circuit amplifies the current signal and converts it into a voltage signal. The analog-to-digital converter converts the voltage signal into a digital waveform, the digital waveform including discretized voltage sample values. The digital counting module determines the pulse count information of the radiation based on the digital waveform. The charge integration module determines the charge integration information of the radiation based on the digital waveform. Therefore, both particle counting and energy integration detection methods can be implemented in the digital domain, effectively improving the performance of the radiation detector in terms of noise, energy resolution, and dynamic range.

The application discloses a kind of multi-modal flexible sensor adaptive signal conditioning system design method, belong to flexible sensor signal conditioning technical field.The present application overcomes the defects of poor universality, performance compromise, high cost of mass production of existing conditioning circuit, adopts layered decoupling and dynamic reconstruction system-level architecture: through multi-modal feature analysis and demand mapping modeling, the feature vector composition of scene recognition is determined;Design configurable analog front end, integrate instrument amplifier, transimpedance amplifier, charge amplifier, bridge amplifier four parallel processing sub-modules, wherein charge and bridge amplifier adopt self-designed architecture with dynamic adaptive gain adjustment capability;Build heterogeneous digital processing platform with NPU, CPU, DSP as core, through cross-modal data fusion, scene recognition engine, dynamic hardware configuration combined with feedforward and feedback, loadable algorithm library and closed-loop optimization control law, realize the real-time scene reconstruction of hardware parameters and digital algorithm;Combined with domestic single-chip selection, rigid-flex PCB and automatic calibration, meet the demand of low-cost mass production.The present application realizes the native adaptation and performance optimization of single hardware platform to voltage, current, charge, impedance and other types of sensor signals, and can be widely applied in robot dexterous hand, medical monitoring, intelligent bandage, consumer motion monitoring and industrial monitoring fields.

The invention discloses a method for simultaneously realizing pressure detection and touch positioning, a touch pressure key structure, an analog front end and an electronic cigarette, and relates to the technical field of display screen touch control. The touch pressure key structure comprises a pressing piece, a conductive elastic piece, a first substrate and a touch pressure channel layer, wherein the touch pressure channel layer comprises a first touch pressure channel layer and a second touch pressure channel layer. The conductive elastic sheet is fixed on one side of the first touch pressure channel layer, a gap space is formed between the conductive elastic sheet and one side of the second touch pressure channel layer, and the first substrate is arranged on the other side of the first touch pressure channel layer and the other side of the second touch pressure channel layer. The pressing piece is provided with a limiting column, the conductive elastic piece is provided with a limiting hole, and the limiting column and the limiting hole are in transition fit. The structure is simpler, a special chip and a special pressure sensing device are not needed, the reliability is high, the pressure sensing and touch functions can be achieved through a single chip, the occupied area is small, and the cost is low.

This invention discloses an integrated structure and method for data acquisition and transmission suitable for environments with strong electromagnetic interference, belonging to the field of high-speed data acquisition and communication technology. Addressing the problems of signal susceptibility to interference, low acquisition accuracy, and unstable transmission in complex electromagnetic environments such as nuclear fusion devices, a multi-level anti-interference data acquisition and transmission scheme is proposed. The structure includes an input impedance adaptive module, an isolation amplification module, a differential signal conversion module, an analog-to-digital conversion module, a digital signal processing module, an opto-isolation triggering module, and a fiber-optic-based 10 Gigabit Ethernet transmission module. Anti-interference is achieved at the analog front end through input impedance matching and isolation amplification; signal stability is improved through differential transmission and FPGA processing; and physical layer electromagnetic isolation is achieved using opto-isolation and fiber optic links. Furthermore, data packet verification and status reset mechanisms enhance data transmission reliability. This invention can achieve high-precision signal acquisition and high-speed stable transmission in strong electromagnetic environments, possessing excellent real-time performance and engineering application value.

The invention discloses a low-interaction secure handshake method, device and system based on spatio-temporal context constraint, order deviation extraction and polarity hedging verification, a chip and a storage medium. According to the method, local physical feature anchor points formed by a plurality of physical nodes in a hardware carrier are extracted, in combination with context parameters such as time, space, environment, operation state and historical state abstracts, order deviation parameters related to a current session are generated, session mapping factors are constructed according to the order deviation parameters, and constraint mapping is executed on a to-be-processed load. At a receiving end, a verification end or a local processing end, a matching result is obtained by simulating in-situ polarity hedging verification, differential matching, residual auditing or closed auditing of a front end, and control such as session establishment, limited release, load zero clearing, blocking or write protection is executed according to a complete matching state, a partial matching state and a mismatching state. According to the scheme, the physical state of the device, the environmental condition and the session history can be jointly incorporated into a safety judgment chain, so that the interactive burden of the explicit key is reduced, and the countermeasure ability to replay, counterfeit, ectopic reproduction and high-frequency heuristic is improved; the method can be applied to scenes such as equipment access authentication, secure communication handshake, high-value operation admission, controlled terminal access and off-line signature.

The utility model discloses a novel parallel charging and discharging switching lithium battery box, including high -power lithium battery group and control MCU chip, high -power lithium battery group is connected control MCU chip through the analog front end AFE chip of setting, control MCU chip is provided with storage module and clock chip module and is accessed system power supply. The lithium battery box proposed in this scheme can increase or reduce the number arbitrarily, is suitable for the power supply device of small -size monitoring station such as high mountain, gorge, border, coast, as the supplement of power grid gap network.

The application discloses a method for realizing pressure sensing and touch positioning simultaneously, a touch pressure key structure, an analog front end and an electronic cigarette, and relates to the technical field of display screen touch control. The touch pressure key structure comprises a pressing piece, a conductive elastic sheet, a first substrate and a touch pressure channel layer, and the touch pressure channel layer comprises a first touch pressure channel layer and a second touch pressure channel layer. The conductive elastic sheet is fixed on one side of the first touch pressure channel layer and forms a gap space with one side of the second touch pressure channel layer, and the first substrate is arranged on the other side of the first touch pressure channel layer and the second touch pressure channel layer. The pressing piece is provided with a limiting column, the conductive elastic sheet is provided with a limiting hole, and the limiting column and the limiting hole are in transition fit. The structure of the application is simpler, does not need special chips and special pressure sensing devices, has high reliability, can realize pressure sensing and touch functions through a single chip, has small board area and low cost.

The present application belongs to the technical field of medical ultrasonic signal processing, and specifically relates to a spermatic vein ultrasonic imaging enhancement system and method based on double-wall filtering and adaptive Doppler signal processing. The system comprises a dynamic reconfigurable analog front end, a dual-channel heterogeneous data processing unit and a closed-loop feedback controller. The method extracts fluid dynamics characteristics in real time through an auxiliary path, intelligently identifies resting state and action mutation state. At the action mutation moment, the physical layer automatically switches the analog filtering parameters to prevent signal saturation, and the digital layer adaptively increases the FIR filter weight to eliminate the ringing artifact; in the resting state, the high-gain analog configuration is maintained and the IIR filter is dominated to capture weak signals. With the delay buffer mechanism, accurate timing alignment of control instructions and imaging data is realized. The present application effectively solves the contradiction between low flow rate detection sensitivity and strong tissue motion interference suppression, eliminates the flicker artifact generated by breath holding action, and significantly improves the diagnosis accuracy of weak reflux.

The utility model provides a high-sensitivity vibration detection circuit. The high-sensitivity vibration detection circuit comprises a power supply module, an analog front end, a digital-to-analog conversion module and a microcontroller, the power supply module outputs 2.5 V voltage to the analog front end and the digital-to-analog conversion module, and an LTC6655 band-gap reference voltage source chip is adopted; the analog front end provides three paths of differential mode vibration sensor signal input channels, and is used for accessing three sensors to detect vibration signals in x, y and z three-axis directions and inputting the vibration signals into the digital-to-analog conversion module; the digital-to-analog conversion module converts an analog signal output by the analog front end into a 24-bit digital signal and sends the 24-bit digital signal to the microcontroller; and the controller encodes the received digital signal and transmits the encoded digital signal to an upper computer through a UART (Universal Asynchronous Receiver Transmitter) interface.

The wearable physiological monitoring intelligent glove has the advantages that the wrist covering part, the back of hand covering part, the finger surface covering part and the finger tip wrapping part are sequentially connected, the wrist covering part is fixed with the main machine shell, the wrist band is sewn on the wrist covering part, the end of the wrist band is extended to bind the wrist, the battery, the blood oxygen integrated analog front end, the AD conversion circuit, the MCU main control circuit, the power supply circuit and the wireless communication circuit are arranged in the main machine shell, the switch, the power supply indicator lamp and the state indicator lamp are embedded on the main machine shell, the surface of the back of hand covering part and the finger surface covering part is provided with the long strip part along the length direction, the anti-static isolation film and the finger tremor sensor are arranged in the long strip part along the length direction, the blood oxygen saturation sensor is arranged in the finger tip wrapping part, the finger surface band is sewn on the finger surface covering part, the end of the finger surface band is extended to bind the finger, the finger tip band is sewn on the finger tip wrapping part, and the end of the finger tip band is extended to bind the finger tip wrapping part.