31results about How to "Facilitate signal acquisition" patented technology

The invention provides a driving style estimation method based on driving pattern transition probability, wherein the method includes the steps: step 1, acquiring actual driving data of a driver, wherein the actual driving history data at least include the steering wheel rotary angle, the vehicle speed, the longitudinal acceleration speed and the transverse acceleration speed; step 2, according to the actual driving data, dividing driving behaviors into N driving behavior patterns; step 3, determining the driving behavior pattern transition probability, wherein the driving behavior pattern transition probability is the transition probability between arbitrary two driving behavior patterns in the N driving behavior patterns; and step 4, taking the driving behavior pattern transition probability as a training sample training classifier, to perform driving style estimation through the classifier.

The invention discloses a digital passive infrared static human body detector which comprises an outer shell, a microcontroller and a PIR sensor and is characterized in that a Fresnel lens is arranged at the front end of the PIR sensor, a matched reflector is installed between the PIR sensor and the Fresnel lens, and the microcontroller is connected with a power source module, a drive motor and a detection switch. A detection method includes: a, background noise is learned, and a background noise sequence is formed; b, dynamic human body detection is carried out; c, delayed output is carried out; d, static detection is judged whether to be carried out or not; e, detection signals are acquired, and a detection signal sequence is formed; f, the digital mutual correlation calculation is carried out; and g, a static human body is judged whether to exist or not. According to the detector and the method, false assumption of a prior passive static human body detector and the defect that the human body under the static state can not be detected are abandoned and avoided, and the human body under the static state in a detection area can be effectively and accurately detected so that the static detection is achieved.

An optical fingerprint identification circuit comprises a reset unit, a photodiode, a storage capacitor, an amplification transistor and a data writing unit. The reset unit comprises a reset transistor, a reset signal line and a reset voltage end and is used for resetting the grid electrode of the amplification transistor; the photodiode is used for receiving an optical signal to generate a photocurrent and outputting the photocurrent to the storage capacitor; the amplifying transistor is used for amplifying a signal received by the amplifying transistor and outputting the signal to the data writing unit.

One embodiment of the invention provides a receiver for use in a navigation system comprising multiple transmitters. Each transmitter transmits a positioning signal comprising a pseudo-random noise (PRN) sequence corresponding to the respective transmitter. The receiver comprises a code module for supplying multiple PRN sequences corresponding to the respective multiple transmitters; and a correlator for correlating the PRN sequences supplied by the code module with an incoming signal. The multiple PRN sequences are based on a single Sidelnikov/Lempel/Cohn/Eastman (SLCE) generative sequence u^SLCE, and each of said multiple PRN sequences, denoted uⁱ satisfies the equation: uⁱ=u^SLCE⊕Tⁱu^SLCE, where ⊕ indicates element by element binary XOR addition, and Tⁱ indicates a cyclic shift of i chips.

An intelligent alternative-direct-current integrated power supply system comprises a two-power-supply automatic switching device, an inversion module and a main monitor, which form an alternative-current/direct-current uninterrupted power supply system containing a uniform monitoring management function. By adopting a layered distributive architecture, the dispersed measure and control and centralized management can be realized. A communication storage battery group and a charging device are canceled, a direct-current/direct-current (DC/DC) conversion module is directly hung on a charging bus; an uninterrupted power supply (UPS) storage device is canceled, the inversion module is directly hung on the charging bus, and the inversion power supply is adopted for powering important loads such as a computer and accidental illumination; and the secondary power distribution management, the station power supply device intelligent management and state examination are uniformly carried out. The alternating current and direct current, the inversion and the communication power supply system of an entire transformer substation power supply can be uniformly monitored on one platform, the human resource can be uniformly dispatched, and the integral management level of the station power supply can be improved.

The invention relates to a biomedical electrode, in particular to a biomedical electrode with a surface micro-structure array and a manufacturing method thereof. The biomedical electrode with the surface micro-structure array characteristic comprises a metal electrode core, a foam materiel back lining and a shielded conductor; the manufacturing method of the biomedical electrode comprises the steps as follows: sheet metal serves as the raw material of the metal electrode core, a laser micro-processing technology is adopted to form a micro-structure array with the longitudinal distance of 0.1-0.3 mm and the transverse distance of 0.1-0.3 mm on the metal electrode core, cleaning and drying are performed, then hydrochloric acid is utilized to remove an oxidizing layer and impurities, alcohol is utilized for cleaning, and a Au or Ag/AgCl thin layer is plated on the surface of the metal electrode core; the metal electrode core is stuck to the surface of the foam materiel back lining by glue; the shielded conductor penetrates through the foam materiel back lining, and is connected to the surface of the metal electrode core with the method of filling conductive silver adhesive, and solderless connection of the metal electrode core with the shielded conductor can be formed after the conductive silver adhesive is solidified, so that the biomedical electrode with the surface micro-structure array is obtained.

The invention provides a hyperspectral three-dimensional laser radar system based on near-infrared full-waveform ranging. The hyperspectral three-dimensional laser radar system comprises a laser emission unit, a signal detection unit, a synchronous collection unit and a data processing unit, the laser emission unit comprises a super-continuum spectrum laser device, and the super-continuum spectrumlaser device is pumped by a near-infrared light source to emit a super-continuum spectrum white laser covering visible light and near-infrared light; the signal detection unit comprises a full-waveform ranging detection system based on a near-infrared waveband, a scanning galvanometer, a telescope, a spectrometer and a multi-channel detector; and the synchronous collection unit comprises a multi-channel digital delay pulse generator and controls collection of the near-infrared waveband detector and multi-channel visible light information collection, so that distance information and spectral information correspond. The hyperspectral three-dimensional laser radar system can directly and simultaneously obtain visible light and near-infrared laser spectral information and laser point cloud spatial information of a target scalar, and can be widely applied to the fields of surveying and mapping, remote sensing, target classification and recognition and the like.

The invention provides a lower limb artificial limb continuous control system driven by electromyographic signals. The system comprises a lower limb artificial limb, a myoelectricity sensor and an upper computer, wherein the lower limb artificial limb comprises a receiving cavity, a thigh connecting rod, a knee joint, a shank connecting rod, an ankle joint and a sole; the myoelectricity sensor isfixed to the skin surface of a healthy side lower limb in a wearable mode; and the upper computer comprises a myoelectricity decoder and a controller, receives the myoelectricity signals from the myoelectricity sensor and generates continuous control instructions for the lower limb artificial limb. According to the lower limb artificial limb continuous control system, the problems that existing lower limb artificial limb related research is mostly focused on intention recognition, and research on how to convert a motion intention recognition result into a control instruction suitable for the lower limb artificial limb is little, are solved.

The invention discloses a photoelectric control composite cable for a mining machine. The photoelectric control composite cable comprises an optical control wire core, a power wire core and a ground wire core; the optical control wire core comprises an optical cable, a plurality of control wire cores and an isolation belt; the plurality of control wire cores are snapped to the optical cable; the isolation belt wraps the optical cable and the control wire cores; every control wire core comprises a first conductor and a first insulation layer; the power wire core comprises a second conductor; a second insulation layer and an insulation shielding layer wrap the second conductor; the ground wire core comprises a third conductor and a semi-conducting layer; filler is arranged in an arrangement gap of the optical control wire core and the power wire core to form a cable core; a wrapping belt layer, an inner sheath layer, a fiber reinforcement layer and an outer sheath layer wrap the cable core. According to the photoelectric control composite cable for the mining machine, the signal collection and electrical control performance is excellent, the safety, the reliability and the durability are high, the integrated photoelectric control composite structure is simple, the transmission performance is stable, and the photoelectric control composite cable can be widely applied to integrated signal and control and power signal composite transmission of mining spaces such as coal, mining and tunnel excavation.

The invention relates to the technical field of biological tissue electrical impedance detection, in particular to an electrical impedance detection device, method and application for in vivo detection of malignant glioma boundaries. The invention designs and manufactures a four-probe type and ring-shaped in-body impedance measurement sensor based on the four-electrode method. Using the impedance analyzer to measure the impedance of glioma and brain tissue, the results show that the impedance amplitude of glioma is smaller than that of brain tissue. Furthermore, the inventors proposed the concept of the slope of the rising slope based on the law of impedance changes, and found that the slope value of the glioma is smaller than that of the brain tissue. For the glioma U87, the average value of γ of the brain tissue is 352.57% larger than it. And this difference is as high as 150.23% for glioma C6, which indicates that the rising slope of glioma U87/C6 in the impedance map is smaller than that of brain tissue. Therefore, the slope of the rising slope in the impedance spectrum can be used as an index parameter to distinguish glioma from brain tissue.

The invention discloses a pneumatic gear shifting system of an automotive mechanical gearbox. The pneumatic gear shifting system of the automotive mechanical gearbox comprises a controller, an electromagnetic reversing valve integrated package, an electric clutch system, a pneumatic gear shifting mechanism, a gear displayer and an electronic gear shifting handle. The electromagnetic reversing valve integrated package is integrated by electromagnetic reversing valves, one end of the electromagnetic reversing valve integrated package is connected with an automobile gas storage tank, and the other end of the electromagnetic reversing valve integrated package is connected with the pneumatic gear shifting mechanism. The electric clutch system is connected with the controller. The controller and the electromagnetic reversing valve integrated package are integrated on a control system of an automobile. The gear displayer is integrated on a display panel of the automobile. The electronic gear shifting handle is arranged in a control area of the automobile. The electric clutch system is fixed to the outer side of the gearbox. The pneumatic gear shifting mechanism is fixed to the gearbox.

The invention discloses an impact monitoring and positioning method based on a two-dimensional beam focusing theory. The method specifically comprises the following steps: 1, monitoring a signal whena structure is impacted by adopting a piezoelectric sensor; sending the acquired impact signal to an upper computer by using a data acquisition card, performing Fourier transform on the impact signalin the upper computer to obtain a signal spectrogram, selecting a frequency peak value of the spectrogram as a center frequency to perform wavelet analysis on the signal to obtain a time domain signalcorresponding to the center frequency, and enveloping the obtained time domain signal; 2, solving the position of an impact point by using a two-dimensional beam focusing positioning method, and judging whether the impact point is in an external field or not; and 3, if the positioning coordinates are not in the external field, considering that the positioning result is located in a blind area ofthe internal field two-dimensional beam focusing positioning method, solving the positioning coordinates (a, b) again, and outputting the positioning coordinates as a final positioning result. According to the invention, the problems of positioning dead zones and low positioning precision of the existing one-dimensional beam focusing positioning are solved.

An apparatus for acquiring signals from a pregnant subject includes a flexible portion that is conformable to an abdomen of the subject. The flexible portion includes a plurality of signal acquisition points, each signal acquisition point comprising a contact adapted to electrically couple to a respective electrode and signal acquisition circuitry. The flexible portion includes a first linear section that is generally aligned along a first axis; and a second linear section extending from the first linear section, the second linear section being generally aligned along a second axis that is perpendicular to the first axis; wherein a first group of the signal acquisition points is located along the first axis and a second group of the signal acquisition points is located along the second axis.

The invention discloses a circuit for continuously and dynamically measuring a joint movement angle, which comprises a Bluetooth WIFI main control module, a nine-axis inertial sensor module, a voltage stabilizing circuit module and a power supply input module. The Bluetooth WIFI main control module is in communication connection with the nine-axis inertial sensor module through an I2C bus; the voltage stabilizing circuit module is connected with the power supply input module, and the output of the voltage stabilizing circuit module is connected with the power supplies of the Bluetooth WIFI main control module, the low-speed high-precision magnetometer and the high-speed low-precision magnetometer; the nine-axis inertial sensor module comprises a sensor chip, a low-speed high-precision magnetometer and a high-speed low-precision magnetometer; and the Bluetooth WIFI main control module comprises a main control chip. According to the circuit for continuously and dynamically measuring the joint motion angle, two circuits for measuring the joint composite motion angle can be conveniently bound to limbs on the two sides of a joint, and therefore information collection is conducted on different devices through a nine-axis inertial sensor.

The invention discloses a primary suspension system and an axle box built-in type non-power bogie of a high-speed motor train unit with the primary suspension system, and belongs to the technical field of bogies of rail transit vehicles. The axle box body is erected between a framework and an axle, the primary suspension spring is arranged between the axle box body and the framework, and the primary suspension spring comprises two glass fiber springs which are symmetrically arranged and a laminated spring which is arranged at the lower parts of the glass fiber springs and is used for being connected with the axle box body; wherein a deformation space is formed between the two glass fiber springs, rubber inserting devices are arranged at the two ends of each glass fiber spring, and the two glass fiber springs are connected through the rubber inserting devices in a hinged mode so that the two glass fiber springs can synchronously release longitudinal displacement. The lightweight design requirement of the framework is met, the transverse occupied space can be reduced, and meanwhile the high-speed application requirement of the motor train unit is met.

The invention belongs to the technical field of computer application, and provides a business hall work number plate turnover control system, which comprises a power supply wiring, a power supply switch, a power supply module and a main control module, and is characterized in that the main control module is connected with an infrared obstacle detection module for signal acquisition, a forward limiter and a reverse limiter; the master control module is also connected with a time delay module and a servo module for controlling the motor; and the time delay module is connected with the servo module. According to the system, the job number plate can be automatically turned over when the human body cannot be detected, so that the consistency of personnel and on-duty information is achieved. Theinvention further provides a business hall work number plate turnover device adopting the business hall work number plate turnover control system, which comprises a box body, a box cover, two vertical plates, a work number plate and stop iron. Through the arrangement of the box body, the arrangement of a control system is facilitated. Through the arrangement of the hollow job number plate, turnover arrangement of the job number plate is facilitated, and signal acquisition is facilitated.