Abstract: The present invention discloses an intelligent identification mechanism and method for a nail gun punch pin. The intelligent identification mechanism includes a nail clip, an assembly frame body and an energy storage body. The nail clip is set below the assembly frame body for feeding nails into the assembly frame body. The energy storage body is set in the rear of the assembly frame body. A motor is arranged within the nail gun shell for driving the punch pin to drive a cam to rotate. The present invention arranges an identification hole on the punch pin; cooperating with the inductive photocoupler, the identification hole can continuously obtain three in-place signals, and then use the control circuit to control communication with the motor, to identify four kinds of working conditions: normal operation, assembly failure, nail stuck in punch pin, and rebound failure; and generate corresponding alarm signals according to the conditions.

Abstract: The disclosure belongs to the field of visible light communication, and specifically discloses a stripe image processing method and apparatus for camera optical communication. The method includes: obtaining a stripe image data set, the stripe image data set including a stripe image sample and a stripe sequence label corresponding to the stripe image sample and a stripe-free image label; based on the stripe image sample and the stripe sequence label corresponding to the stripe image sample and the stripe-free image label, training a generative adversarial network to obtain an image reconstruction model and a stripe extraction model; among them, the image reconstruction model serves as a generator of the generative adversarial network, and the stripe extraction model serves as a discriminator of the generative adversarial network.

Abstract: The disclosure provides an LED light identification method, device, electronic apparatus, and storage medium, belonging to the technical field of indoor positioning and navigation. The method includes: obtaining a background frame and a spline frame by a CMOS camera in an LED lighting environment; determining a target quantity of dark stripes in the spline frame by comparing the background frame with the spline frame; determining a target switching frequency corresponding to the target quantity based on a predetermined corresponding relationship and the target quantity. The target switching frequency is used to mark LED lights. By determining the target switching frequency corresponding to the target quantity and determining the target LED lights having the target switching frequency, it can be determined that the current position of the CMOS camera is near the target LED light.

Abstract: The present invention discloses a method for preparing nanometer silicon powder by induction plasma pyrolysis of silane, which comprises the following steps: exciting working gas in an induction plasma reactor to form stable high-temperature plasma; mixing gaseous silane with dilution gas; injecting into a high-temperature plasma thermal field; decomposing the gaseous silane under a joint action of a hot airflow and a high-temperature circulating cooling airflow in the high-temperature plasma thermal field; cooling and condensing silicon atoms generated by pyrolysis into nanometer-scale spherical silicon powder; filtering an airflow wrapped with the silicon powder by filters; depositing the nanometer silicon powder on the surfaces of the filters; then blowing off the nanometer silicon powder by a periodic back blowing airflow; and collecting the nanometer silicon powder.

Abstract: The disclosure provides an LED light source recognition method, device, apparatus, and medium based on deep learning, belonging to the field of indoor positioning and navigation technology. The method includes the following. In an LED lighting environment, a spline frame is obtained through a CMOS camera, in which the spline frame is an image having dark stripes. The spline frame is input to a target detection model, a dark stripe detection result output by the target detection model is obtained. The multiple rectangular boxes are preprocessed, and based on the predicted classification corresponding to each preprocessed rectangular box, an image feature encoding sequence of the spline frame is determined. The image feature encoding sequence is compared with a light source feature encoding sequence corresponding to each LED light source to determine the light source feature encoding sequence that best matches the spline frame.

Abstract: A nail gun punching needle clutch mechanism includes a punching needle driving cam, an inductive optocoupler, a torsion spring, a clutch pawl, and a punching needle. A motor connected to a driving camshaft through a gearbox. A fixed end of the punching needle is fixed on a piston of an accumulator; a movable end of the punching needle is disposed inside the assemble frame body in a sliding manner. The punching needle driving cam and the clutch pawl are disposed on two sides of the punching needle respectively. The punching needle driving cam engages with punching needle teeth through cam pins to drive the punching needle to slide between an initial position and an energy storage position. An inductive optocoupler blocking edge is disposed at an edge of a side, facing the clutch pawl, of the punching needle, and the inductive optocoupler controls start and stop of the motor.

Abstract: A nail gun punching needle clutch mechanism includes a punching needle driving cam, an inductive optocoupler, a torsion spring, a clutch pawl, and a punching needle. A motor connected to a driving camshaft through a gearbox. A fixed end of the punching needle is fixed on a piston of an accumulator; a movable end of the punching needle is disposed inside the assembly frame body in a sliding manner. The punching needle driving cam and the clutch pawl are disposed on two sides of the punching needle respectively. The punching needle driving cam engages with punching needle teeth through cam pins to drive the punching needle to slide between an initial position and an energy storage position. An inductive optocoupler blocking edge is disposed at an edge of a side, facing the clutch pawl, of the punching needle, and the inductive optocoupler controls start and stop of the motor.

Abstract: A nano-silicon-graphite composite negative electrode material with carbon coating and aluminum metaphosphate composite modification layer on surface and its preparation method are disclosed, which is mainly prepared from following components by mass percentage: 4-10 wt. % of aluminum metaphosphate, 10 wt. % of asphalt cracking carbon, 15 wt. % of spherical nano-silicon powder, and 71-65 wt. % of graphite powder. A nano-silicon powder is added to deionized water for ultrasonic dispersion to obtain a uniform dispersion, then graphite powder is added to mix uniformly, and then waterborne asphalt is added. After stirring and mixing evenly, spray drying is carried out, and the dried powder is compounded with metaphosphate for mechanical fusion. Finally, the same is transferred into vacuum furnace for high-temperature carbonization to obtain the product.

Abstract: The invention discloses a capacitive touch panel detection circuit and a boost circuit thereof, wherein the boost circuit comprises a plurality of charge pumps in series, a sequence circuit and a voltage-stabilizing circuit. The charge pump comprises a first switch, a second switch, a third switch, a fourth switch, a first capacitor and a second capacitor. The switches are controlled by the sequence circuit. During the first half of the working cycle of the charge pump, the first capacitor is charged. During the second half of the working cycle of the charge pump, the second capacitor is charged so that the voltage is two times of the power voltage, after the first capacitor is connected with the power supply in sequence. The boost circuit of the invention does not need an induction and a Schottky diode. All of the capacitors except a voltage-stabilizing capacitor can be integrated into a chip. Therefore, the number of off-chip ancillary components can be reduced.

Abstract: A powerless helical locking mechanism for a door includes a screw with a variable lead angle connected with a power source, and a self-adaptive nut connected to the door. The helical slot of the screw is divided into a working segment with the helical lead angle greater than the friction angle, a closing segment with the helical lead angle smaller than the friction angle, and a transition segment between the closing and working segments. The power source actuates the screw to rotate bidirectionally.

Abstract: The invention discloses a capacitive touch panel detection circuit and a boost circuit thereof, wherein the boost circuit comprises a plurality of charge pumps in series, a sequence circuit and a voltage-stabilizing circuit. The charge pump comprises a first switch, a second switch, a third switch, a fourth switch, a first capacitor and a second capacitor. The switches are controlled by the sequence circuit. During the first half of the working cycle of the charge pump, the first capacitor is charged. During the second half of the working cycle of the charge pump, the second capacitor is charged so that the voltage is two times of the power voltage, after the first capacitor is connected with the power supply in sequence. The boost circuit of the invention does not need an induction and a Schottky diode. All of the capacitors except a voltage-stabilizing capacitor can be integrated into a chip. Therefore, the number of off-chip ancillary components can be reduced.

Abstract: A powerless helical locking mechanism for door includes a screw (1) with variable lead angle connected with a power (11) and a self-adaptive nut (19) connected to the door (10), in which, the helical flux of the screw is divided into three segments: one segment is a working segment with the helical lead angle greater than the friction angle, one segment is a closing segment with the helical lead angle smaller than the friction angle, and transition segment between the two segments, the power (11) actuates the screw to corotation and reverse, the self-adaptive nut (19) consists a spindle sleeve (7), a wrist (5) and other part, the nut and the screw is assembled to a helical kinematic-pair, wherein the wrist is dipped into the helical flutes of the screw and line contacts with the flute making the wrist and random helical flute of helical lead angle form mating helical pair to translate power and movement.

Abstract: An improved developer for PMMA, electron resist comprising an effective amount of MEK in combination with MIBK or CS alone or a mixture thereof and a process of obtaining improved contrast in electron beam lithography therewith.

Abstract: An improved developer for PMMA electron resist comprising an effective amount of MEK in combination with MIBK or CS alone or a mixture thereof.