Abstract: The present invention discloses a polysubstituted pyridyl pyrazolecarboxamide and its preparation method and use. The structure of the polysubstituted pyridyl pyrazolecarboxamide of the present invention is shown in the following General Formula I. The polysubstituted pyridyl pyrazolecarboxamide has the following advantages such as good insecticidal effect, low production cost; and it may be used in control of agriculture, forest or health pests, especially of resistant pests. For its preparation method, the yield is high, the number of steps is small, and the operation is simple.

Abstract: A variable speed fan motor, including: a variable speed motor and a motor controller. The motor controller includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply unit. The gear detection circuit includes a plurality of Hall current sensing units. Each second power input line is connected with a first input end of each of the Hall current sensing units. Second input ends of the Hall current sensing units are connected in parallel, and are connected with a second AC input end of the power supply unit. An output end of the Hall current sensing unit is connected with an input end of the microprocessor. The microprocessor selects operating parameters according to an energized signal of the second power input lines and controls the variable speed motor to operate in accordance with the selected operating parameters.

Abstract: A method for controlling an ECM motor to output a constant torque. The method includes: 1) entering a target torque value T0 from an external device; when the motor is in a non-use state, starting the motor, and allowing the microprocessor to acquire an original output voltage value P chopped by a PWM signal; when the motor is in a running state, allowing the microprocessor to acquire a current output voltage value P chopped by the PWM signal; 2) enabling the microprocessor to calculate a target bus current value Itad using the function Itad=F(T,P) according to the target torque value T0 and the output voltage value P chopped by the PWM signal; and detecting a real-time bus current Ibus; and 3) allowing the microprocessor to compare the target bus current value Itad with the real-time bus current Ibus for conducting a closed-loop control.

Abstract: A variable speed fan motor, including a variable speed motor body and a motor controller. The motor controller includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply. The gear detection circuit includes a plurality of current sensing units. Only one of the power input lines is in an energized state, and remaining power input lines are in a deenergized state. Each power input line is connected to one current sensing unit. An output end of the current sensing unit is connected to an input end of the microprocessor. The microprocessor selects operating parameters of the motor according to a detected signal of energization state of each power input line. The microprocessor is connected to the series communication unit. The microprocessor communicates with an external device via the series communication unit.

Abstract: A low-temperature fast-fired lightweight ceramic heat insulation plate and a preparation method thereof. The preparation method comprises: performing ball milling and powder spraying on a raw material containing foamable ceramic waste slag to prepare foamable powder, the foamable ceramic waste slag accounting for 80-100 wt % of the weight of the raw material; uniformly mixing 100 weight portions of the foamable powder with 3-15 weight portions of granular powder of a low-melting-point organic matter to obtain mixed powder materials; pressing the mixed powder materials under 10-20 MPa to prepare a ceramic green body; and firing the ceramic green body at a temperature of 1100-1170° C. to prepare the lightweight energy-saving ceramic heat insulation plate.

Abstract: A fastening apparatus for fixing a circuit board includes a bracket. The bracket includes a main plate, two extending plates extending perpendicularly from opposite ends of the main plate, two fixing tabs extending perpendicularly from distal ends of the two extending plates, and two fastening tabs. The main plate and the two extending plates clamp the circuit board, and the two fastening tabs couple the circuit board to the bracket.

Abstract: A fan motor, including: a variable speed motor and a motor controller. The motor controller includes: a microprocessor, an inverter unit, a gear detection unit, and a power supply unit. The power supply unit supplies power for each circuit. The gear detection unit is connected to a plurality of power input lines. Each power input line receives AC power from an AC power supply. The gear detection unit includes: a plurality of voltage detection circuits, and a plurality of thermal resistors. Each power input line is connected to a thermal resistor in series and matches up with a voltage detection circuit. Each voltage detection circuit includes a thermo-sensitive resistor that is bound to the corresponding thermal resistor via a thermal conductive element. The thermo-sensitive resistor detects a temperature signal of the thermal resistor and adjusts the voltage of the output end of the voltage detection circuit.

Abstract: Methods and systems that are described herein may help to dynamically utilize multiple eye-tracking techniques to more accurately determine eye position and/or eye movement. An exemplary system may be configured to: (a) perform at least a first and a second eye-tracking process; (b) determine a reliability indication for at least one of the eye-tracking processes; (c) determine a respective weight for each of the eye-tracking processes based at least in part on the reliability indication; (d) determine a combined eye position based on a weighted combination of eye-position data from the two or more eye-tracking processes, wherein the eye-position data from each eye-tracking process is weighted by the respectively determined weight for the eye-tracking process; and (e) carry out functions based on the combined eye position.

Abstract: A method for setting parameters of an ECM motor, the method including: 1) energizing the motor and measuring the AC input voltage Vac; 2) allowing the motor to run according to recorded rotational direction data and rotational speed data when Vac>Vset1; 3) enabling the motor to enter a programming state of rotational direction data and rotational speed data when Vac<Vset2; 4) conducting the programming state including operating the motor in a rotational speed state, a rotational direction state, or a combined state thereof, with each state lasting for a time of T, respectively; and 5) determining that the programming state is proper when the user turns off the power; and storing the programming state in operation at the moment when the power is turned off as normal operating parameter of the motor.

Abstract: A method for measuring an air volume of a blower motor, including: a) establishing M constant air volume control functions Qi=F(n) corresponding to M air volume points CFMi in a microprocessor of a motor controller; b) starting the motor, measuring a real-time rotational speed n0 and a parameter Q0 of the motor after the motor runs in a stable state, putting the parameter Q0 into the functions Qi=F(n) to obtain multiple rotational speeds ni, comparing the real-time rotational speed n0 with the multiple rotational speeds ni corresponding to the multiple air volume points CFMi, and determining a real-time detected air volume CFM0 which falls within two air volumes CFMi and CFMi-1; and c) calculating the real-time detected air volume CFM0 according to the two air volumes CFMi and CFMi-1 and the rotational speeds ni and ni-1 using an interpolation method.

Abstract: An electronically commutated motor, including: a motor body and a motor controller. The motor controller includes a control box and a circuit board disposed in the control box. The circuit board includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply. The gear detection circuit includes a plurality of current sensing units. The output end of the power supply supplies power to each circuit, and a first AC input end of the power supply is connected to a first power input line N. The gear detection circuit is connected to a plurality of gear input lines. At least one of the gear input lines is selected to be in an energized state. Each gear input line is correspondingly connected to a first input end of one of the current sensing units.

Abstract: A method of fabricating a microlens array, the method comprising the steps of: compressing a shape memory polymer substrate with a predetermined load; indenting the shape memory polymer substrate to form an array of micro-indents; immersing the shape memory polymer substrate in a solvent capable of causing stress-enhanced swelling in the shape memory polymer substrate such that the array of micro-indents forms a corresponding array of micro-protrusions on the shape memory polymer substrate due to the stress-enhanced swelling of the micro-indents; and heating the shape memory polymer substrate to form at least one curved surface of the shape memory polymer substrate under the micro-protrusion array.

Abstract: A control system for electrical equipment, the system including: a system controller; a motor; and a signal transducer. The system controller outputs a plurality of rotation switch signals, and the rotation switch signals are high-voltage AC signals. The motor is a brushless DC motor or electronically commutated motor (ECM). The signal transducer is connected between the system controller and the ECM, and includes a rotation switch sensing circuit, a microprocessor controller, and an interface signal processing circuit. The rotation switch sensing circuit detects the rotation switch signals output from the system controller, and transmits the rotation switch signals to the microprocessor controller for processing. The microprocessor controller is connected with the ECM via the interface signal processing circuit.

Abstract: A liquid crystal device is disclosed. The liquid crystal device includes a TFT array substrate, a CF substrate, and a liquid crystal layer. The TFT array substrate includes a first electrode layer and a first alignment layer covering the first electrode layer. A color CF layer is formed between a glass substrate and a passivation layer of the TFT array substrate. The TFT array substrate further includes a black matrix and a photo spacer arranged thereon. The CF substrate includes a second electrode layer and a second alignment layer covering the second electrode layer. The liquid crystal layer is arranged between the first alignment layer and the second alignment layer. In addition, a manufacturing method of the liquid crystal device is disclosed. In this way, the liquid crystal devices have good alignment effects, and the color shift issues at wide viewing angle and the aperture rate are enhanced.

Abstract: Provided in the disclosure is a pre-stressed concrete track slab of slab-type ballast-less track, which includes a slab body (1), on which fastening embedded casings (4) are arranged. At least one row of longitudinal common steel bars (11) and at least one row of transverse common steel bars (12) are arranged in the slab body (1) along a length direction and a width direction. The longitudinal common steel bars (11) are insulated from the transverse common steel bars (12). At least one row of longitudinal pre-stressed steel bars (7) and at least one row of transverse pre-stressed steel bars (6) are fastened in the slab body (1) along the length direction and the width direction through anchor backing plates and fastener devices (8). In the pre-stress directions of the longitudinal pre-stressed steel bars (7) and the transverse pre-stressed steel bars (6), it is post-tensioned in both directions or it is pre-tensioned in one direction and post-tensioned in the other direction.

Abstract: A wearable computing system may include a head-mounted display (HMD) with a display configured to display images viewable at a viewing location. When aligned with an HMD wearer's line of sight, the entire display area of the display may be within the HMD wearer's field of view. The area within which an HMD wearer's eye can move and still view the entire display area is termed an “eye box.” However, if the HMD slips up or down, the display area may become obscured, such that the wearer can no longer see the entire image. By scaling or subsetting an image area within the display area, the effective eye box dimensions may increase. Further, in response to movements of the HMD with respect to the wearer, the image area can be adjusted to reduce effects such as vibration and slippage.

Abstract: This disclosure involves proximity sensing of eye gestures using a machine-learned model. An illustrative method comprises receiving training data that includes proximity-sensor data. The data is generated by at least one proximity sensor of a head-mountable device (HMD). The data is indicative of light received by the proximity sensor(s). The light is received by the proximity sensor(s) after a reflection of the light from an eye area. The reflection occurs while an eye gesture is being performed at the eye area. The light is generated by at least one light source of the HMD. The method further comprises applying a machine-learning process to the training data to generate at least one classifier for the eye gesture. The method further comprises generating an eye-gesture model that includes the at least one classifier for the eye gesture. The model is applicable to subsequent proximity-sensor data for detection of the eye gesture.

Abstract: Disclosed is a technique that can help to detect a blink of an eye and a direction along which the eye is oriented before, after, or during the blink. To this end, light data can be received from at least one light sensor. The light data indicates at least one characteristic of light reflected from an eye area. A blink event can be detected based on the light data. A gaze direction can be determined based on the blink event. At least one computing action can be performed based on the gaze direction.

Abstract: Methods and systems are described for determining eye position and/or for determining eye movement based on glints. An exemplary computer-implemented method involves: (a) causing a camera that is attached to a head-mounted display (HMD) to record a video of the eye; (b) while the video of the eye is being recorded, causing a plurality of light sources that are attached to the HMD and generally directed towards the eye to switch on and off according to a predetermined pattern, wherein the predetermined pattern is such that at least two of the light sources are switched on at any given time while the video of the eye is being recorded; (c) analyzing the video of the eye to detect controlled glints that correspond to the plurality of light sources; and (d) determining a measure of eye position based on the controlled glints.

Abstract: The present invention discloses a polysubstituted pyridyl pyrazolecarboxamide and its preparation method and use. The structure of the polysubstituted pyridyl pyrazolecarboxamide of the present invention is shown in the following General Formula I. The polysubstituted pyridyl pyrazolecarboxamide has the following advantages such as good insecticidal effect, low production cost; and it may be used in control of agriculture, forest or health pests, especially of resistant pests. For its preparation method, the yield is high, the number of steps is small, and the operation is simple.