32results about How to "Free from interference from external factors" patented technology

The invention discloses a method for real-time recognition of driver's emotion by combining facial expression and voice. Firstly, the face is tracked in real time through kinect SDK to obtain the driver's facial image and voice signal, and then the driver's facial image, The acoustic signal is preprocessed, and the feature extraction model based on unsupervised feature learning and sparse coding is trained according to the given objective function. After the model is obtained, the preprocessed information is input into the model to obtain emotional features based on facial images and sound signals ; and extract words according to the spoken content, create a dictionary through the frequent words obtained by the Apriori algorithm, and obtain text-based emotional features through the dictionary, and finally connect the emotional features based on facial images and sound signals with the text-based emotional features. Get the feature vector, input the feature vector to the support vector machine SVM, train the SVM classifier, and get the SVM model. The final SVM model is used to identify the driver's emotion, which has high robustness.

The invention discloses a 1 μm band cylindrical vector fiber laser based on a mode selective coupler, including a pump source, a wavelength division multiplexer, a gain fiber, a circulator, a single-mode cloth Bragg grating, a first polarization controller, and a second polarization A controller, a mode selection coupler and a collimator; the output end of the pump source is connected to the short-wavelength input end of the wavelength division multiplexer, and the output end of the wavelength division multiplexer is connected to port 1 of the circulator through a gain fiber, Port 2 of the circulator is connected to a single-mode Bragg grating, port 3 of the circulator is connected to the long wavelength of the first polarization controller, mode selective coupler and wavelength division multiplexer, and the second polarization controller and collimator are connected to the mode Select the few-mode fiber output of the coupler. The invention has the advantages of high slope efficiency of fiber laser, small insertion loss and high polarization purity of column vector laser.

The present invention disclosed a robotic chess game and system based on the characteristics of the target contour and skeleton. This method proposes a rough positioning, regional segmentation, secondary accurate positioning, characteristic extraction of target contour and skeleton, and SVM multi -classifierCombined with the positioning and identification methods of chess chess pieces to realize the automatic playback function of smart chess robots at the beginning of the opening stage of the smart chess robot; this system is by ordinary Chinese chess boards and chess pieces, UARM four -free robotic arm, suction cups, cameras, light sources, PC -based control systemsFor the composition, the entire system structure is simple and easy to operate, so that the man -machine played robot can fully complete the playback function before playing, and it also has good stability in a relatively complex environment.

The invention relates to a glass curtain wall aluminum alloy wall frame. The frame comprises a longitudinal rod, a transverse rod, clamping devices, first suction devices and second suction devices, wherein the longitudinal rod is connected with the transverse rod in a bolt connection mode, the clamping devices are symmetrically mounted at the front end and the rear end of the middle of the transverse rod, the first suction devices are symmetrically arranged on the upper side of the front end of the transverse rod, and the second suction devices are symmetrically arranged on the lower side ofthe front end of the transverse rod. According to the frame, the problems that when an existing glass curtain wall is installed, glass is prone to influence by external factors such as wind during airtransportation, so that conveying deviation occurs, the glass collides with a hard material so as to be broken in the serious case, a certain gap always exists between an existing skeleton and the glass, due to the fact that the glass is in direct contact with the outside so as to be prone to influence of severe weather such as large wind and large rain, and the situation of shaking is prone to occur after installation are solved.

The invention discloses a double front axle commercial vehicle kingpin caster angle and kingpin inclination angle matching method. The double front axle commercial vehicle kingpin caster angle and kingpin inclination angle matching method is characterized in that active aligning torques and negative aligning drag torques of a first axle and a second axle are established, and according to the phase equilibrium of the active aligning torques and the negative aligning drag torques of the first axle and the second axle in a steering process, the relation of a residue steering angle related to a first axle kingpin inclination angle, a first axle kingpin caster angle, a second axle kingpin inclination angle and a second axle kingpin caster angle is established to obtain the relation of a residue yaw velocity related to the first axle kingpin inclination angle, the first axle kingpin caster angle, the second axle kingpin inclination angle and the second axle kingpin caster angle; the first axle kingpin inclination angle, the first axle kingpin caster angle, the second axle kingpin inclination angle and the second axle kingpin caster angle are taken as design variables, a proper change interval is selected, an optimization target is set, and a complex method is applied to looking for an optimal solution to constrain an optimization problem. The double front axle commercial vehicle kingpin caster angle and kingpin inclination angle matching method is simple, rapid and high in precision, and the designing and the adjustment of the double front axle commercial vehicle kingpin caster angles and main kingpin inclination angles can be effectively guided.

This invention relates to a micro-leakage automatic protection device based on micro-flow test and a method, in which, the device is set on a duct including a test control valve on a main pipeline anda control circuit connected with the test control valve characterizing that a test channel is connected on the main pipeline with the diameter far smaller than that of the main one, both ends of thetest channel are at both ends of the control valve, a micro-flow sensor is set in the channel connected with the control circuit.

A temperature sensing device of long period optical fiber raster belongs to fiber optic communications and fiber optic transduction field, formed by writing long period raster on cladding through corrosion then plate low heat-sensitive material and high heat-sensitive material on one side of optical fiber. When environmental temperature changes, expanding with heat and contracting with cold of film layer plated makes raster bend so that synchronous resonant wave length of long period optical fiber raster changes. The invention has properties of high temperature sensibility,, simple structure, good stability, resistance of high temperature, can be used in high temperature measurement and multi-point type temperature measurement.

The invention discloses a method for synthesizing zinc ferrite spherical nanometer materials with a premixed flame. The method uses Zn(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O is used as a precursor to form a stable high-temperature flat flame by adjusting the flow rate of carrier gas, combustible gas, and oxygen premixed gas and adjusting the distance between the substrate and the nozzle. The carrier gas is used to bring the atomized precursor into the formed high-temperature flame surface. Finally successfully prepared ZnFe 2 o 4 spherical nanomaterials. The invention has simple operation steps, low cost, one-step rapid synthesis, good product reproducibility, good crystallinity and no impurity phase in the prepared product, and the appearance of the product is uniformly dispersed spherical particles with a particle size of 300-400nm , assembled from a large number of small particles with a particle size of about 10 nm.

The invention discloses a rearview mirror fixing frame applied to a truck, and the rearview mirror fixing frame comprises: a fixing support which comprises a fixing rod and a connecting seat disposedat one end of the fixing rod, wherein the connecting seat comprises a connecting column and first interval protrusions evenly distributed in the circumferential direction of the connecting column, anda first interval groove is formed between every two adjacent first interval protrusions; and a positioning assembly, wherein the positioning assembly comprises a first shell, a transverse pressing piece with one end embedded into the first shell, and a first reset piece connected with the transverse pressing piece. The connecting seat is embedded into the first shell; the transverse pressing piece comprises a sliding rod, a driving head fixed to the outer end of the sliding rod and a limiting head fixed to the inner end of the sliding rod; and a first positioning bulge matched with the firstspacing groove is arranged on the limiting head. According to the rearview mirror, the angle and orientation of the rearview mirror can be conveniently adjusted, the orientation and state of the rearview mirror can be locked after adjustment, the stable state of the rearview mirror is maintained, and interference of external factors is avoided.

A method for sending a strategy comprises: according to network resources in a control area of a controller, determining a control strategy of the controller for controlling the network in a level where the controller is located; and sending the determined control strategy to the controller.

The invention discloses a novel man-hour monitoring method. By utilizing a principle that required instantaneous fuel consumption data is different since an engine has different works under differentstates, the instantaneous fuel consumption is zero when engineering machinery is in downtime; the instantaneous fuel consumption is extremely stable and the fluctuation is small when the engineering machinery is standby; and the instantaneous fuel consumption is large in fluctuation when the engineering machinery is at work. By utilizing the principle, a working state of the engineering machineryis judged by computing a fluctuation variance yield of the instantaneous fuel consumption, and the monitoring precision is improved; a man-hour monitoring way of the monitoring method disclosed by theinvention cannot be affected by external factors, and is high in reliability and suitable for the engineering machinery such as an excavator, a loader, a bulldozer, a crane and like different varieties.

The invention discloses a truck rearview mirror, which comprises a fixing bracket, which includes a rearview mirror installation part and an upper fixing part and a lower fixing part respectively connected to two ends of the rearview mirror installation part, and the two parts are respectively connected by a hinge mechanism and a lower fixing part. The adjustment mechanism is installed on the side of the truck; the adjustment mechanism includes a housing with an accommodating channel, a pressing assembly with one end inserted into the accommodating channel and the other end protruding out, and a fixed connection arranged in the accommodating channel and with the end of the lower fixing part The casing assembly; the inside of the pressing assembly has a sliding channel, which can only slide linearly along its length in the housing; the inside of the pressing assembly is evenly distributed with a circle of spaced protrusions along its circumference; the The outer wall of the bushing assembly is provided with positioning protrusions matched with the spacing protrusions. The invention can conveniently adjust the angle and orientation of the rearview mirror, and after the adjustment, can lock the orientation and state to maintain the stable state without being disturbed by external factors.

The invention discloses a mobile fish pond feeder device which comprises a floating body, a straight running gear, a storage tank, a feeding device and a discharging device. The straight running gear includes a cable fastened to the banks of a fish pond. The whole mobile fish pond feeder device moves back and forth on the water surface by the cable as being driven by an actuating unit fastened to the floating body. The storage tank with the feeding device inside is fixed to the floating body. The feeding device comprises a packing auger sleeve and a feeding packing auger. The lower end of the storage tank is sealed and more than a half of the volume of the storage tank is below the surface of the water. The discharging device comprises a discharging motor and a rejection tray, wherein the discharging motor is arranged above the rejection tray. The discharging motor and the rejection tray are connected in a transmission way. The feeding device and the rejection tray are connected in a coaxial butt joint from bottom to top. The discharging motor is further connected with the feeding packing auger in a transmission way. The mobile fish pond feeder device significantly enlarges the feeding range and lowers the gravity center and improves the water surface running stability. Only one discharging motor is adopted as the actuating unit to realize the feeding from bottom to top and horizontal wide range of discharge.

The invention discloses a Brillouin-Er-doped fiber random fiber laser with switchable wavelength intervals. The laser is of a semi-open cavity structure and comprises an open loop part and a straightline part. In the open loop part, one end of a circulator is connected with the output end of a coupler, the other end of the circulator is connected with the input port of the coupler, the other input end of the coupler is connected with the output end of a Brillouin pumping source, and the other output end of the coupler is connected with the input end of a spectrograph. The linear part comprises two connected linear units, and each linear unit comprises a pumping source, a wavelength division multiplexer, an Er-doped fiber and a single-mode fiber; the output end of the pumping source is connected with the input end of the wavelength division multiplexer, and the output end of the wavelength division multiplexer is connected with the Er-doped optical fiber; the other side of the Er-dopedoptical fiber is connected with one end of the single-mode optical fiber, and the other end of the single-mode optical fiber is connected with the second linear unit wavelength division multiplexer;and the single-mode optical fiber of the second linear unit is connected with the isolator. According to the invention, the Brillouin Stokes light output with switchable wavelength intervals is realized by the adjustment of the on / off and power of the pumping source.