137results about How to "Avoid bondage" patented technology

The invention discloses a physiological signal detecting system based on a continuous wave Doppler radar. The physiological signal detecting system comprises a Doppler radar sensor, a power supply module, a signal preprocessing module, a differential amplifier, an active band-pass filter, a breath and heartbeat signal separation module and an MCU module, wherein the Doppler radar sensor is used for transmitting continuous wave radar signals to a human chest and receiving echo signals, processing the echo signals to output low-frequency signals which reflect human respiration and heartbeat change, conducting signal processing on the low frequency signals through the signal preprocessing module, the differential amplifier, the active band-pass filter, the breath and heartbeat signal separation module and the MCU module, and acquiring human breath signals and human heartbeat signals. Through the adoption of the technical scheme, the Doppler radar sensor works in a continuous wave mode and a multistage filter circuit is correspondingly designed, so that the non-contact detection of the human physiological signals can be realized, and the restriction and discomfort feeling of traditional contact type detection equipment to a patient can be avoided.

The present invention provides a static human body heartbeat and respiration signal extraction method based on an FMCW radar. Firstly, obtaining three parameter information of distance, Doppler and angles of a human body target according to analysis and calculation of human body target detection data, then constructing three parameter images of a distance-time image, a distance-Doppler image and adistance-angle image, then using the images to determine the human body target to be detected through a target individual existing in a 2D-OS-CFAR detection environment and at the same time suppresshuman body target signal's interference to the human body target signals to be detected, and finally conducting heartbeat and respiratory signal extraction on the detected human body target to be detected based on an extended DACM algorithm of derivation operation. The static human body heartbeat and respiration signal simple extraction method based on the FMCW radar is innovatively provided, realizes non-contact type detection of the human body heartbeat and respiratory signals, avoids constraint and discomfort of patients caused by traditional contact detection devices, at the same time caneffectively inhibit interference and separates the human body target signals to be detected.

A cooking appliance is disclosed. The cooking appliance includes a cabinet defining the external appearance of the cooking appliance, a cooking unit provided in the cabinet for performing cooking using a heat source, a panel having a through hole, a heat source control unit provided at the rear of the panel, the heat source control unit having a shaft extending to the front of the panel through the through hole, a knob provided at the front of the panel in a state of being connected to the shaft for rotating the shaft according to user's manipulation, a knob ring provided between the knob and the panel for receiving at least a portion of the knob, and a knob ring holder coupled to the knob ring at the rear of the panel for allowing the knob ring to move on a front surface of the panel in a radial direction of the knob ring.

The invention relates to an interaction method and related equipment and system among terminals. The interaction method comprises the following steps that: a first instant communication terminal receives a file transmission instrument input by a user in allusion to a second instant communication terminal, and the first instant communication terminal and the second instant communication terminal log in an instant communication platform through a correlated account number; whether the first instant communication terminal and the second instant communication terminal belong to a local area network is judged, if so, a local WEB server of the first instant communication terminal is started to generate a URL (Uniform Resource Locator) address information of a file; and the address information of the local WEB server and the URL address information of the file are sent to the second instant communication terminal through the instant communication platform, the second instant communication terminal sends a file acquisition request carrying the URL address information to the local WEB server according to the address information of the local WEB server, and the local WEB server acquires the file according to the URL address information and transmits the file to the second instant communication terminal. According to the interaction method and related equipment and system, the operation convenience can be improved.

The invention relates to a novel two-color parallel type composite polyester fiber, which is a novel two-color parallel type composite fiber of common semi-dull PBT and modified PET polyester, and is characterized in that on a composite spinning device, a parallel type composite fiber spun by double screws has a peanut type fiber cross section, and the ratio of the PBT polyester to the modified PET polyester is 50:50. The specifications of the spun fibers are 100D/36f and DTY of 150D/72f, and the modified PET polyester used in spinning is disperse dye normal pressure deep-dyeing type polyester; the spun fiber after treatment has the same elasticity with polyurethane core spun yarn performances. With the disperse dye normal pressure deep-dyeing type polyester, the composite polyester fiber has excellent dyeing property and can effectively generate two-color effect. Besides, because two grooves are formed on the surface of the fiber, the fiber has the functions of moisture absorption and perspiration to certain extent.

The present invention relates to the test technology field, in particular to an adaptive large modulation bandwidth I/Q modulation error digital compensation method and an adaptive large modulation bandwidth I/Q modulation error digital compensation system. The method comprises the steps of setting a baseband signal V<o> as zero; detecting the radio frequency output via an envelope detector to obtain an envelope detection value V<e>; when the envelope detection value V<e> is a minimum value, calculating a DC bias parameter B of a vector modulation error; calculating the adjustment parameters d and f; and according to the adjustment parameters d and f and the DC bias parameter B, compensating according to the following error compensators: V<c>=C(V<o>+B), wherein the V<c> is an input vector after the error compensation. According to the scheme, a baseband signal generator, a vector modulator and a transmission channel are brought into a calibration process, the errors caused by the three parts are compensate and correct simultaneously, thereby avoiding an error caused by approximate compensation in an existing technical scheme. The scheme is realized by a baseband signal predistortion digital method, thereby avoiding the bandwidth limitation of a simulation device in the existing scheme, and realizing the high precision compensation correction of a GHz magnitude large modulation bandwidth vector modulation error.

The invention relates to a shoe with shoe lace tightness capable of being automatically adjusted. The shoe comprises a sole, a vamp, a shoe tongue and a plurality of shoe laces; the vamp is fixedly connected to the upper surface of the sole; a U-shaped opening is formed in the middle of the vamp; the shoe tongue is fixedly connected to the front end of an opening; the shoe further comprises a hidden electric shoe lacing binding device which comprises a plurality of guide rails, a protective shell, a power source and a controller; the guide rails are all arranged in the portion, on one side of the opening, of the vamp and extend to the sole from the edge of one side of the opening; the protective shell is arranged in the portion, on the same side as the guide rails, of the sole; a shaft rod and a motor used for driving the shaft rod to rotate are arranged in the protective shell; the motor is electrically connected with the power source arranged in the sole; the controller and the motor are connected and are used for controlling the motor to be powered on or off and the rotating direction of the motor; one end of each of the shoe laces is wound on and fixed to the shaft rod; the other end of each shoe laces penetrates the corresponding guide rail and is fixedly connected to the portion, on the other side of the opening, of the vamp; the controller controls the motor to rotate forwards and reversely, the motor drives the shaft rod to rotate forwards and reversely, and the tightness of the shoe laces is adjusted.

The invention discloses a method for extracting polypeptide from vinasse. The method includes: (1) degreasing the vinasse; (2) extracting water-soluble protein; (3) subjecting the degreased vinasse to fermentation by the aid of mixed bacterium of Trichoderma reesei, bacillus amyloliquefaciens, bacillus subtilis and Pasteur bacillus licheniformis; (4) subjecting the extracted water-soluble protein and the processed vinasse obtained from the step (3) to enzymolysis by the aid of protease. According to the method, the vinasse is fermented by the mixed bacterium of the Trichoderma reesei, the bacillus amyloliquefaciens, the bacillus subtilis and the Pasteur bacillus licheniformis before protease enzymolysis, wood fibers, semi-fibers and the like in the vinasse can be degraded into micro molecules like polysaccharides, celluloses and the semi-fibers are prevented from constraining the protein, full contact of the protein and the protease is enlarged, an enzymolysis effect of the protein is improved, and a yield rate is guaranteed.

Vehicle seat belt apparatus includes an electric-type pretensioner that includes a motor for rotationally driving a belt reel to take up a belt. The apparatus also includes: a take-up position detection section for detecting a take-up position of the reel; a traveling condition determination section for determining that a traveling condition of the vehicle has varied to a predetermined condition; and a control section for controlling power supply to the motor, on the basis of a signal output from the determination section, to thereby control a driving amount of the motor but also for controlling the reel, in accordance with a detection signal output by the take-up position detection section, so that the reel is kept at a predetermined take-up position, to thereby hold a vehicle occupant in a seat with the belt.

The present invention provides a wind power gear box fault diagnosis method which aims to solve the problem in the prior art that the fault information is very difficult to detect at the operation of a gear box. When the gear box goes wrong, a vibration signal of the gear box has two characteristics: 1 a fault signal is weaker and is easy to inundated by other signals; 2 the fault signal generates a modulation phenomenon because of the fault impact. The wind power gear box fault diagnosis method of the present invention applies the ensemble empirical mode decomposition (EEMD) and a Hilbert square demodulation technology respectively to solve the above two problems. Firstly, by applying the EEMD, an original vibration signal is decomposed into a series of intrinsic mode functions (IMF), in the IMFs, the IMF having the maximum kurtosis value usually corresponds to a Fault feature component; and then the Hilbert square demodulation is utilized to demodulate the IMFc, and the spectral analysis is carried out on the demodulated signal, and finally, a spectral analysis result is compared with the rotation frequencies of the rotation parts of the gear box to determine a fault position.

The invention provides a static human body heartbeat and respiration signal separation and reconstruction method based on OMP. The method comprises the steps of firstly, acquiring distance informationof a human body target through analysis and calculation according to actual human body target detection data, and constructing a distance time graph; then performing direct current offset correctionon the I/Q signals, and calculating phase information through an arc tangent function; performing phase unwrapping on the detected to-be-detected human body target based on an extended DACM algorithmof derivation operation, solving the problem of phase ambiguity, and performing phase difference to enhance heartbeat signals; and using two two-stage cascaded four-order IIR band-pass filters for separating heartbeat signals from breathing signals, and finally completing separation and reconstruction of the breathing signals and the heartbeat signals through a compressed sensing theory and an OMPalgorithm. The invention innovatively provides the static human body heartbeat and respiratory signal separation and reconstruction method based on orthogonal matching pursuit, the influence of harmonic waves and noise on heart rate and respiratory rate estimation is effectively reduced, and the accuracy of final heartbeat and respiratory rate estimation is greatly improved.

The invention relates to the field of communication, and discloses a charging method and a charging system. The charging method comprises the steps as follows: when a WIFI router judges that there are electronic devices needing to be charged among electronic devices connected to the WIFI router, the WIFI router finds unique identification codes corresponding to the electronic devices needing to be charged; the WIFI router sends the unique identification codes to a wireless charging device; and the wireless charging device adds the unique identification codes to a magnetic signal, and charges the electronic devices corresponding to the unique identification codes carried in the magnetic signal. The embodiments of the invention further disclose a charging system. Compared with the prior art, users' manual operation is avoided, the stranglehold of charging lines on electronic devices is avoided, users can make fuller use of fragmented time to charge the electronic devices thereof, the influence of charging on users' work and life is reduced, and the user experience is improved.

The invention discloses a battery charge state estimation method and device based on noise adaptive particle filtering, and the method comprises the steps: obtaining single data sampled at a fixed period, and selecting a characteristic single body for parameter identification and state tracking; performing parameter initialization on a standard particle filtering algorithm, and obtaining an SOC initial state particle set according to a target state estimated value and an initial noise covariance; carrying out one-step prediction on an SOC value, guiding sequential importance sampling by combining terminal voltage estimation deviation of particles, and updating a normalized weight; weighting calculation is carried out to obtain a predicted value of the SOC, and random resampling is carried out according to normalized weight to complete particle set updating and new particle set measurement deviation recording; determining an adaptive process noise standard deviation range for next cycle prediction; and circularly executing to complete the battery SOC estimation based on the noise self-adaptive particle filter. The defect that when a traditional particle filtering method is applied to SOC estimation, the size of the process noise variance needs to be determined through multiple times of trial and error is overcome.

The invention relates to the technical field of gastrodia elata planting, in particular to a gastrodia elata planting and cultivating method. Rolled rods are prepared from corn paste, and the corn paste is made to be capable of serving as a gastrodia elata culture material; by adding rice bran and/or rice hull, particle matter and ingredients which are difficult to be combined with the corn paste are generated in the corn paste, therefore, the air permeability of a jelly material prepared from the corn paste is good, the formation rate of gastrodia elata protocorms is increased, the contact rate of the protocorms and armillaria mellea is increased, sufficient nutrition supply is guaranteed, and the yield is increased.

The invention provides a respiration rate calculation method and device. The method includes the steps that electrocardiograph signals are obtained and preprocessed, and parameter signals are extracted from the electrocardiograph signals, wherein the parameter signals comprise the training parameter signals and the testing parameter signals; an adaptive filter is adjusted through the training parameter signals, the adjusted adaptive filter is used for processing the testing parameter signals to obtain first respiration signals, and the first respiration rate is calculated according to the first respiration signals; a neural network training model is established through the training parameter signals and used for obtaining second respiration signals from the testing parameter signals, and the second respiration rate is calculated according to the second respiration signals; and through weighing calculation of the first respiration rate and the second respiration rate, the final respiration rate is obtained. The respiration signals are extracted from the electrocardiograph signals through the adaptive filter and a neural network, the accurate respiration rate is obtained, and the method and device are suitable for daily nursing.

The invention discloses a mixing improvement method and blending method for phyllite weathered soil and red clay. The method includes the following step that the red clay is blended into the phylliteweathered soil to form mixed filler of C filler with the liquid limit less than 40%. The method overcomes the restriction that in the traditional method, phyllite weathered soil and red clay can onlybe separated and placed in layers, and the application scope of the soil with special engineering properties is enlarged; the filler meeting the roadbed specifications can be obtained, the engineering properties of mixed filler are improved, the fracture properties of red clay are reduced, and the compaction strength and stability of the phyllite weathered soil are increased; the consumption of the phyllite weathered soil is largely increased, and the harm of abandoned phyllite weathered soil is reduced; the cost of the reinforcing agent improvement method is reduced, the method can be used for filling of railway special lines and freight yard road foundations, and the engineering cost is saved.

The invention discloses a method and a device for extracting respiratory signals. The method comprises steps: acquiring an electrocardiosignal and performing preprocessing, extracting a parameter signal from the electrocardiosignal, the parameter signal including a parameter signal used for training and a parameter signal used for testing; reducing dimension of the parameter signal, to obtain a principal component electrocardiosignal, using the principal component electrocardiosignal corresponding to the parameter signal used for training as an input sample of a neural network, using a reference respiratory signal obtained by an impedance method as a training object of the neural network, establishing a neural network training model; inputting the principal component electrocardiosignal corresponding to the parameter signal used for testing to the neural network training model, to obtain a final respiratory signal. Through establishing the neural network training model, the respiratory signals are accurately and efficiently obtained from the electrocardiosignals. The method and the device are suitable to be used for monitoring respiratory state of a subject in real time every day.

The invention relates to an electromyography acquisition and amplification minisize sensor, belonging to an electromyographic signal acquisition device. The electromyography acquisition and amplification minisize sensor includes an electromyographic signal acquisition electrode, a signal processing module, an analog-to-digital conversion module, a modulation emission module, and a display module, the electromyographic signal acquisition electrode is electrically connected with the signal processing module, the signal processing module includes a radio frequency interference suppression circuit, a three-stage amplification circuit, a full-wave rectification circuit, and a filter circuit, the signal processing module is electrically connected with the analog-to-digital conversion module, the analog-to-digital conversion module is electrically connected with the modulation emission module, a bluetooth receiver is arranged on the display module, and the display module receives the signals emitted by the modulation emission module through the bluetooth receiver. The electromyography acquisition and amplification minisize sensor can perform muscle rehabilitation training through the combination with the games on a display panel, and increases the interest of muscle training; and moreover, the sensor is free of a connecting wire, and the binding caused by the connection of various leads when a subject is tested can be prevented.

The invention provides a supporting device for assembling/disassembling a non-penetrable divided axle. The supporting device comprises a movable hoisting mechanism, an angle adjusting mechanism and an axle clamping mechanism. The supporting device utilizes the movable hoisting mechanism to hoist, the angle adjusting mechanism to turn and the axle clamping device to clamp and fix; with adoption of the supporting device, the non-penetrable divided axle can be assembled/disassembled only by one person; the support device is simple to operate, does not need an external power source or a gas source and is very flexible to use; the supporting device solves the bondage of assembling/disassembling the non-penetrable divided axle resulting from inadequate chassis space, gets rid of the operators' dependence on cranes and has the advantages of rational structure, high reliability, low manufacturing cost and good practical effect; the supporting device is not only suitable for indoor use, but embodies flexibility in field rush-repairing operation.

The invention relates to the technical field of ductile cast iron pipe production tools, in particular to a ductile cast iron pipe conveying device which comprises a drive motor and two fixed underframes arranged in parallel. A transmission mechanism and a transport vehicle are arranged on each fixed underframe; a support frame for supporting ductile cast iron pipes is arranged on each transport vehicle; each transport vehicle is slidably connected with the corresponding fixed underframe; and each transmission mechanism is connected between an output end of the drive motor and the corresponding transport vehicle. According to the ductile cast iron pipe conveying device provided by the invention, one power source is adopted for simultaneously driving the two transmission mechanisms to drivethe transport vehicles to transport, so that the effect that the transport vehicles on two sides move synchronously at the constant speed is ensured, the stability of a ductile cast iron pipe conveying process is ensured, and the positions of the transport vehicles can be conveniently and accurately controlled; before the conveying is started, a lifting platform and the ductile cast iron pipes are lifted up; after the conveying is finished, the support frames are returned to designated positions; and the damage to the outer surfaces of the ductile cast iron pipes caused during a conveying process can be effectively avoided.