47 results about "Phototube" patented technology

The invention relates to the technical field of photoelectric tube detection, in particular to a photoelectric tube high-voltage excitation type solar blind ultraviolet discharge detection method and system, and the method comprises the steps: obtaining original voltage sequence data collected by a high-speed transimpedance sampling circuit in real time; positioning feature points of each suspected pulse according to the original voltage sequence data, and extracting pulse waveform features; obtaining a physical confidence factor of each suspected pulse according to the falling edge attenuation characteristics; calculating effective discharge energy flow in unit time based on the physical confidence factor; calculating a discharge stability coefficient according to a coupling relationship between the time correlation entropy and the effective discharge energy flow; according to the method, a scheme from microscopic physical judgment, waveform form deconstruction and time law analysis to multi-dimensional trend prediction is constructed, so that the contradiction between the detection sensitivity and the quantification precision is solved; and adaptive tracking monitoring of the partial discharge process is realized.

This invention relates to the field of steel production quality inspection technology, specifically to a phototube protection device, comprising a protective cover body, a mounting structure, and a light-receiving hole; wherein, the top of the protective cover body is provided with a closed structure; the mounting structure is disposed on the protective cover body for fixing the protective cover body to the bracket of the phototube; the light-receiving hole is opened on the front of the protective cover body, and the opening size of the light-receiving hole is smaller than the detection range of the phototube body to limit the light-receiving range of the phototube, thereby reducing the influence of external light, welding sparks, and other interference factors on the detection signal; the light signal received by the phototube of this invention is constrained to the target area directly in front of the light-receiving hole; thus, the probability of false triggering of the detection signal is reduced, and the detection accuracy of the phototube is improved.

The invention provides a control method for maintaining the cut tobacco conveying flow to be stable and reducing the starting and stopping frequency of equipment. According to the invention, two metering tube control photoelectric tubes are added and are used for controlling the increase and decrease of the operation frequency of front-end equipment, so that the self-adaptive control and matching of the incoming quantity and the demand quantity of materials are realized. According to the invention, a conveying belt motor is changed into a variable frequency motor, and material information fed back by a photoelectric tube is associated with the belt frequency, so that a control method of automatically increasing the frequency when the material is less, automatically reducing the frequency when the material is more and automatically stopping when the material is full is realized, and the material in a metering tube is always maintained at a reasonable level.

The utility model relates to photoelectric device test technical field especially a kind of miniature photoelectric tube ageing seat, including base, upper cover, integrated light source module, multiple elastic probes and locking assembly;The base is opened with heat dissipation groove, test groove and mounting groove, the heat dissipation groove and mounting groove confluence intercommunication, test groove is located at the confluence of heat dissipation groove and mounting groove;The elastic probe is distributed in mounting groove, and its upper end extends to test groove, and lower end is exposed below base;The upper cover left end is hinged with base;Upper cover is vertically opened with through-hole, and integrated light source module is located on upper cover and is positionally corresponding with test groove by through-hole;The locking assembly is located between upper cover and base to lock the closure state of upper cover and base, can satisfy the online light quantity control and test of miniature photoelectric tube by the utility model, improve test precision and reliability.

The invention relates to the field of photoelectric management, in particular to an intelligent photoelectric management system and method based on big data, and the system comprises a target detection module, an image processing module, a mechanical tracking module, a disturbance compensation module and a visual processing module. The image processing module is used for suppressing a sub-peak value and carrying out boundary truncation, the mechanical tracking module is used for continuously tracking a target, the disturbance compensation module is used for compensating disturbance of a target point, and the visual processing module is used for outputting a non-delay motion equation. The performance of the photoelectric tracking system in executing a tracking task is improved, the mechanical disturbance effect is effectively inhibited, high-precision tracking control over a target object is achieved, the self-adaptive capacity of the photoelectric tracking system is improved, and the stability of target tracking and the accuracy of motion data analysis are ensured.

Direct-bonded optoelectronic interconnects for high-density integrated photonics are provided. A combined electrical and optical interconnect enables direct-bonding of fully-processed optoelectronic dies or wafers to wafers with optoelectronic driver circuitry. The photonic devices may be III-V semiconductor devices. Direct-bonding to silicon or silicon-on-insulator (SOI) wafers enables the integration of photonics with high-density CMOS and other microelectronics packages. Each bonding surface has an optical window to be coupled by direct-bonding. Coplanar electrical contacts lie to the outside, or may circumscribe the respective optical windows and are also direct-bonded across the interface using metal-to-metal direct-bonding, without interfering with the optical windows. Direct hybrid bonding can accomplish both optical and electrical bonding in one overall operation, to mass-produce mLED video displays. The adhesive-free dielectric-to-dielectric direct bonding and solder-free metal-to-metal direct bonding creates high-density electrical interconnects on the same bonding interface as the bonded optical interconnect. Known-good-dies may be used, which is not possible conventionally, and photolithography over their top surfaces can scale to high density.

The application discloses a kind of atmospheric particulate matter sampling left and right paper moving device and control method thereof, including sliding plate assembly, sampling body assembly, screw rod assembly, left limit block and right limit block, sliding plate assembly is composed of driving wheel, driven wheel and paper tape shaft, sampling body assembly is composed of sampling pressure head, photoelectric tube, beta source and motor, screw rod assembly is composed of screw rod, screw rod motor, push block and spring guide rail.This application uses straight tube sampling in left and right paper moving for particulate matter sampling, which can effectively reduce the influence of dust accumulation in the tube, and move the detection unit out of the gas path, heating the sample gas to remove moisture, which has no effect on the photoelectricity, and can greatly improve the accuracy of detection. The precise positioning during the paper moving process ensures that the sampling spot is accurately delivered to the detection unit position. In the paper moving process, the spring is compressed to eliminate over-positioning, ensuring that the sliding plate assembly contacts the left and right limit plates for precise positioning.

The application discloses a high-power laser beam inter-delay measurement device, when the relative time delay is measured in a base frequency band, a signal emitted by a clock reference is connected to a first channel of a high-speed oscilloscope in an electrical signal mode, and a pulse output by a main laser system with a high repetition frequency is received by a first photoelectric tube and converted into an electrical pulse and connected to a second channel of the high-speed oscilloscope; when the relative time delay is measured in a three times frequency band, three times frequency analog light is received by a second photoelectric tube after passing through terminal optical elements and converted into an electrical pulse and connected to a third channel of the high-speed oscilloscope. The application measures the time delay by segmenting and dividing wavelengths, and finally accumulates the total delay to determine the time delay of each light beam relative to the reference at a target point. The high-precision measurement of the inter-beam delay can be realized without adding new equipment by using the existing main laser system with a high repetition frequency, three times frequency analog light source and other equipment, the principle and structure are simple, the cost is low, and the engineering implementation is easy.

The utility model relates to an internal arteriovenous fistula monitoring bracelet for a hemodialysis patient. The internal arteriovenous fistula monitoring bracelet comprises a bracelet main body and a bracelet wrist strap, the bracelet main body is composed of a shell, a touch display screen, a power supply, a charging interface, a first photoelectric tube, a second photoelectric tube, a main control circuit board, a temperature monitoring chip and a heat insulation pad; a heat insulation pad is laid on one side, close to the inner side, of the bottom of the shell; a temperature monitoring chip is mounted between the shell and the heat insulation pad; a sensing module is arranged on the first wrist strap; the sensing module is provided with a first laser, a second laser, a third photoelectric tube, a fourth photoelectric tube, a sound sensor, a vibrating diaphragm and a sponge. Scattering light intensity signals generated after laser passes through thrombus are detected in real time through the photoelectric tube, and the internal fistula tremor feeling is monitored in real time through the sound sensor; by adopting a photoacoustic combined detection mode, the reliability of detection is improved, the false alarm rate of internal fistula blockage is reduced, and the device has the advantages of simplicity in operation, portability and accurate diagnosis.

The invention discloses an anti-saturation optical detection circuit, and relates to the technical field of electronic circuits. The circuit comprises a photoelectric conversion unit, a voltage comparison unit, an adjustable reference voltage unit and an output unit. By setting the adjustable threshold voltage, the circuit can effectively distinguish the effective shading signal from the ambient background light, the saturation phenomenon under the strong ambient light is avoided, and a higher reference voltage is set through the adjustable potentiometer. Only when a shielding object enables the phototube to output a strong signal exceeding the threshold value, the comparator turns over, so that tiny voltage fluctuation caused by electromagnetic interference is ignored. According to the utility model, stable and clean digital switching signals are output, and the reliability and the anti-interference capability of optical detection are obviously improved.

The invention discloses a biphase magnetic mirror offset frequency laser gyroscope system, and belongs to the technical field of precise laser gyroscopes. The two gyroscopes are arranged in parallel, each gyroscope comprises a gyroscope cavity and an alternating-current phototube assembly which is arranged on the gyroscope cavity and used for outputting demodulation, and the alternating-current phototube assemblies output two A / B signals with the phase difference of 90 degrees; two magnetic mirror offset frequency assemblies; the double-phase magnetic field control circuit is used for controlling the two magnetic mirror offset frequency assemblies to generate an orthogonally changing magnetic field so as to generate an offset frequency effect on light; and the signal demodulation systems are respectively used for receiving four paths of A / B signals from the two alternating-current photoelectric tube assemblies, respectively acquiring steering pulse signals of the two gyroscopes according to the A / B signals, and eliminating a lock region by crosswise splicing the steering pulse signals. According to the invention, the problems of test precision and the like of multiple types of laser gyroscopes are solved, the negative influence of the lock region on the laser gyroscope is reduced, and the accuracy and sensitivity of the laser gyroscope are improved.

This application provides a rubidium atomic clock based on a velocity grating spectrum and its implementation method. The method includes: a multi-frequency coherent laser source emitting a laser signal containing a velocity grating spectrum, which is split into two paths by a polarization beam splitter; the reflected beam is injected into a laser frequency stabilization module to achieve laser frequency stabilization; the transmitted beam is injected into a rubidium bulb through a lens group to interact with rubidium atoms; a phototube detects transition spectral lines, converts the transition spectral lines from optical signals to electrical signals, and transmits them to a lock-in amplifier for demodulation; an integral amplification module converts the demodulated DC voltage into a linearly increasing voltage and transmits it to a crystal oscillator; the crystal oscillator generates an initial microwave signal and generates a frequency synthesizer. 87 The microwave signal corresponding to the Rb atom; the phase-frequency modulation module modulates the microwave signal to obtain an error signal, which is then transmitted to the microwave resonant cavity to adjust the electromagnetic field according to the error signal, thereby stabilizing and locking the rubidium atomic clock. This method is used to improve the stability of the rubidium atomic clock system.

This invention discloses a storage tank and a method for calculating storage capacity. The storage tank includes a rake roller, a cabinet body, and a bottom belt at the bottom of the cabinet body for conveying tobacco shreds. The rake roller is located at the conveying port of the cabinet body. It also includes a light curtain sensor, a first phototube, and a second phototube mounted on both side walls of the cabinet body. The light curtain sensor is positioned perpendicular to the bottom belt in front of the rake roller and is used to detect the stacking height of the tobacco shreds. The second phototube is located above the conveying surface of the bottom belt and is used to detect the bottom endpoint position of the tailings on the bottom belt. The first phototube is located directly above the second phototube and is used to detect the top endpoint position of the tailings on the bottom belt. The storage capacity calculation method of this invention calculates the remaining tailings based on the sensors mounted on the storage tank, improving the accuracy and stability of the processing data.

1. The name of the design product: UV flame detection module (square type). 2. The use of the design product: using UV photocell for flame detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention provides a method for automatically recovering a dummy ingot chain in continuous casting, which relates to the technical field of automatic control of continuous casting machines and realizes accurate positioning and automatic control of the dummy ingot chain in a fan-shaped section of a continuous casting machine by integrating detection devices such as a winch encoder, a withdrawal and straightening encoder, a photoelectric sensor and a limit switch through a PLC (Programmable Logic Controller) system. The method specifically comprises the following steps: inserting a dummy ingot chain before casting and checking the state; the position of a dummy bar chain is monitored in real time through an encoder, and winch subsection speed control is triggered according to threshold values of a seventh fan-shaped section and a thirteenth fan-shaped section; a photoelectric tube is used for switching the lifting height and positioning a winch insertion position; and a front hook of a dummy bar vehicle chain hooks the hanging rod to finish traction recovery. A multi-sensor cooperative control, sectional speed regulation and redundancy detection mechanism is adopted, the problems that traditional manual recovery is low in efficiency, large in positioning error and high in manual operation risk are solved, the recovery time is remarkably shortened, the operation rate of a continuous casting machine is improved, and the service life of a dummy ingot chain is prolonged.

The invention relates to a method for optical quality control of a grid of an accumulator cast from lead or a lead alloy, in particular a GroE accumulator, in which the cast grid (9) cooled to room temperature is positioned between a backlit glass pane (4) and a photocell (8), in which the voltage of the photocurrent generated by the photocell (8) by light energy conversion is measured, in which the measured actual voltage is compared with a predefinable target voltage and in which, in the event that the measured actual voltage falls below the predefinable target voltage, the grid (9) is rejected as defective.

Optical liquid sensor (1) for detecting liquid (9) for an electrical system (10), comprising - a light source (2) for emitting light, - an optical detector (3) designed as a line detector (3a) with at least two light-sensitive photocells (6) for detecting the light emitted by the light source (2), and - a reflective surface element (5), wherein - the light source (2) and the surface element (5) are arranged such that the emitted light strikes the surface element (5) at an angle, - the light source (2) is designed to emit a parallel beam of light (4), - the light source (2) and the detector (3) are arranged such that the surface element (5) directs the light beam (4) onto the photocell (6), - the surface element (5) is movable in the direction of the surface normal of the surface element (5) and is mounted depending on the amount of liquid (9) present, and - the optical liquid sensor (1) has a beam splitter (12) which is configured to branch off a control beam (7) from the emitted light beam (4) and to direct the control beam (7) to the detector (3) independently of the surface element (5) and / or the liquid (9).

A facility safety method includes establishing, at distinct locations relative to the facility, one or more smart assembly point systems (SAPS), detecting at each SAPS environmental parameters including wind speed, wind direction, ambient temperate and gas of interest presence, determining if a hazardous condition exists based on the detected parameters, alerting personnel of the hazardous condition, said alerting including providing the location of a SAPS at a clean air assembly point, and conducting a personnel headcount at the SAPS at the clean air assembly point. In certain embodiments, a SAPS structure having four backlit sides with transparent lettering that are photocell-activated at night time or conditions of low visibility is used.

The invention relates to the technical field of phototubes, in particular to an ultra-high-speed response proximity focusing type phototube and a preparation method thereof, and the phototube comprises a tube shell part and a cathode part which are in indium seal connection with each other; the tube shell component comprises a tube shell structure, an input light window, a getter and a grid mesh structure are sequentially arranged in the tube shell structure in the direction from the light input end to the first indium sealing end, and the tube shell structure is constructed to be formed by overlapping and brazing layered ceramic and a metal electrode ring and at least comprises a getter electrode and a grid mesh fixed electrode. According to the invention, through precise assembly and near focusing structure design, the reflective photoelectric cathode is located on the cathode surface, the distance between the cathode surface and the grid structure is controlled at a submillimeter level, an optical signal enters the cathode surface through the grid, electrons are excited and then are directly emitted to the grid, the electron flight path difference is greatly reduced, and the time consistency is improved; the electron transit time is greatly shortened, the photoelectric response speed is remarkably improved, and the rising time of hundred picoseconds can be achieved.

This invention provides a method for improving the bonding accuracy of a rod bonding machine, comprising: calibrating the center point of a phototube so that the rays emitted by the phototube pass through the center of a standard crystal rod; mounting the standard crystal rod onto a crystal axis and repeating the measurement multiple times to verify the stability of the phototube; sequentially calibrating the horizontal error of the bottom axis, the gap error of the bottom axis, the zero-position error of the bottom and back axes, the zero-position error of the crystal axis and the back axis, and the center position of the suction cup, and adjusting the positional relationship of the corresponding components based on the calibration results. With this configuration, by calibrating the matching accuracy of each hardware component of the rod bonding machine, the deviation of the zero position of each hardware component can be quickly located, and then corresponding adjustments can be made so that the crystal orientation is closer to the target value and the fluctuation is smaller during crystal rod bonding. With the assistance of appropriate operational details, the crystal orientation of the bonded crystal rod meets the requirement of ±0.05°.

The utility model belongs to the technical field of tobacco machinery auxiliary tools, and particularly relates to a special tightening and loosening tool for a fastening screw of a photoelectric tube in the tobacco industry, which comprises a sleeve at the head end and an L-shaped hand rocker fixedly connected with the tail end of the sleeve, an inner cavity of the front end of the sleeve is in a polygon shape matched with the shape of a screw, an opening at the tail end of the opening close to the L-shaped hand rocker extends downwards, the extending position is semicircular, and the midpoint of the semicircle coincides with the midpoint of the tail end of the sleeve. According to the technical scheme of the utility model, the fastening efficiency and effect of the fixing screw of the photoelectric tube are obviously improved, the problems of poor fastening effect, easy loosening and the like caused by manual fastening are avoided, and the stable work of the photoelectric tube is ensured, so that the accuracy of material flow control is ensured.

The utility model discloses a sheltering object cleaning device for a photoelectric tube of a slicing machine. The sheltering object cleaning device comprises a mounting box, a brush and a driving device. The interior of the mounting box is divided into a left cavity and a right cavity, the driving device is arranged in the left cavity, a photoelectric tube is arranged at the bottom of the right cavity, a sweeping box is arranged on the upper layer of the right cavity, and the sweeping box is located above the photoelectric tube. The cleaning box is of an open structure and is provided with a cleaning groove and an ash outlet, the cleaning groove is provided with a through hole, laser emitted by a photoelectric tube penetrates through the cleaning box from the through hole, and the cleaning groove is communicated with the ash outlet. The driving device is in driving connection with the brush, the brush is arranged on the upper surface of the sweeping groove in a sliding mode, and when the driving device operates, the brush is driven to sweep back and forth along the upper surface of the sweeping groove, so that foreign matter falling into the sweeping groove is discharged from the ash outlet. The cleaning efficiency can be improved, the safety is improved, and the labor cost is reduced.

The application provides a dual-wavelength smoke sensing calibration method and system, the method comprising: based on a red light emitting tube, dynamically self-calibrating a photoelectric tube; if the dynamic self-calibration is successful, using a calibration calibration value to calibrate the emission current of a blue light tube; after the emission currents of the red and blue light tubes are both calibrated, using a red light tube to reduce the power consumption of the device in a weighted opening mode of the blue light tube. The dual-wavelength smoke sensing calibration method provided by the embodiment of the application can complete consistency calibration and improve the yield rate through software without increasing any additional cost and power consumption, and significantly reduce the power consumption of the device.

The present application relates to a kind of aerosol sensor detection system and detection device, detection system includes power supply conversion unit, controller unit, aerosol detection unit, data interface unit and abnormal state monitoring unit.Detection device includes main shell, PCB support, PCB board and bottom shell.The detection system of the present application can ensure that the light source intensity emitted by infrared LED light emitting tube is consistent each time by using closed-loop control of hardware and software, effectively improve the accuracy of detection system.The detection device of the present application increases lens in front of photoelectric tube, gathers the scattered light source, thereby preliminarily improves the signal level of photoelectric tube, and can improve the resolution of sensor to some extent.

The invention discloses a direct-current sampling circuit, a calibration method and device and a computer readable storage medium, and belongs to the technical field of circuit design, and the direct-current sampling circuit comprises an anti-electromagnetic interference circuit which is connected with a geodetic network and is configured to discharge and suppress electromagnetic interference signals in the sampling circuit; the signal conditioning circuit is configured to convert an input signal of the anti-electromagnetic interference circuit into a set voltage amplitude and a set current amplitude to be output by adjusting the resistance value of a resistor; the DC sampling loop can sample DC voltage or DC current, has anti-electromagnetic interference capability, and ensures calculation precision based on a calibration algorithm of a linear function principle; and an anti-electromagnetic interference and isolation loop formed by the piezoresistor, the high-voltage ceramic capacitor, the magnetic bead and the gas photoelectric tube is adopted, so that the strong anti-electromagnetic interference capability of the loop is ensured, and the reliability of the direct-current sampling loop is improved.

The invention relates to the technical field of vehicle detection equipment, and discloses a phototube-based automobile detection alarm device, which comprises an alarm assembly arranged on one side of a plant stand column and an auxiliary assembly arranged on one side of the plant stand column, the alarm assembly comprises a control box, the control box is connected with an alarm lamp and a pneumoelectric linkage type high-pitch alarm, the plant stand columns are connected with supporting plates, the supporting plate on one side is connected with a photoelectric tube, and the supporting plate on the other side is connected with a photoelectric emission mirror. The auxiliary assembly comprises a liquid storage tank, a liquid outlet pipe is arranged in the liquid storage tank, a spray head is fixedly connected to the side, away from the liquid storage tank, of the liquid outlet pipe, an air bag is arranged on one side of the outer surface of the plant stand column, a main air feeding pipe is arranged in the air bag, and the side, away from the air bag, of the main air feeding pipe is arranged in the liquid outlet pipe. The problems that when a vehicle travels to a steel plate hoisting area in the using process, sight dead angles exist when a crane hoists the steel plate, the vehicle below cannot be found in time, and the hidden danger that the steel plate collides with the vehicle in the hoisting process occurs are solved.

The utility model belongs to the technical field of tobacco industry production, and discloses a photoelectric tube support and a detection device, which comprise a fixing assembly, a supporting piece, a bottom plate and an adjusting assembly. The fixing assembly is used for being connected with a photoelectric tube and connected to the supporting piece, the adjusting assembly comprises an outer toothed plate and an inner toothed plate, the outer toothed plate is connected to the bottom plate, the outer toothed plate is provided with an annular tooth groove, the inner toothed plate is arranged and connected to the supporting piece in a sleeving mode, the outer wall of the inner toothed plate is provided with annular teeth, the annular teeth are connected to the annular tooth groove in a meshed mode, and the bottom plate is used for being connected with equipment. The supporting piece is fixed to the equipment through the bottom plate, the bottom plate is not prone to rotating, the contact area of the supporting piece and the equipment is increased through the bottom plate, the connecting strength of the supporting piece and the equipment can be improved, the supporting piece is prevented from deflecting, and equipment shutdown caused by wrong detection signals given by a photoelectric tube is avoided. The annular teeth of the inner toothed plate are meshed with the annular tooth grooves of the outer toothed plate, so that the supporting piece can be fixed and prevented from rotating.

The invention provides an optical signal conversion circuit. The optical signal conversion circuit comprises a grounding end, a photoelectric tube, a reference voltage input end, an operational amplifier, a first capacitor and a switch assembly. The photoelectric tube is connected among the current output end, the input end of the operational amplifier and the reference voltage input end. The first capacitor is electrically connected with the input end of the operational amplifier, the output end of the operational amplifier and the reference voltage input end. The switch assembly is connected to a connection circuit of the phototube, the operational amplifier and the first capacitor, is used for changing the working state of the operational amplifier, and has a first switch state, a second switch state and a third switch state. When the switch assembly is in a first switch state, the operational amplifier works in a closed-loop sampling circuit state; when the switch assembly is in a second switch state, the operational amplifier works in an integral circuit state; and when the switch assembly is in the third switch state, the operational amplifier works in a circuit holding state.

The application discloses a kind of laser gyro phase adaptive cavity length stabilizing system, comprising: microcontroller, first low-pass filter, drive amplifier, photoelectric converter and second low-pass filter;Wherein, microcontroller: cavity length modulation signal is sent into first low-pass filter;Receive light intensity signal and filter signal, according to filter signal to obtain drive signal;First low-pass filter: after filtering cavity length modulation signal, obtain second filter signal;Drive amplifier: the signal of drive signal and second filter signal fusion is amplified to generate amplification signal, and amplification signal is used to adjust the light power of laser gyro and modulate;Photoelectric converter: receiving photoelectric tube output signal of laser gyro, photoelectric tube output signal is converted to obtain light intensity signal;Second low-pass filter: receive light intensity signal, and light intensity signal is filtered to obtain filter signal.The application solves the problem of cavity length stabilizing system failure.

The utility model discloses a photoelectric detection device, which comprises a shell, a light source inlet A and a light source inlet B are arranged on the shell, a photoelectric tube is arranged at the light source inlet A, and an infrared detection module is arranged at the light source inlet B. The shell is further internally provided with a power supply module, an infrared detection module and a photoelectric detection module, the power supply module is composed of an alternating current adapter, a voltage stabilizing integrated circuit and a plurality of rectifier diodes which are connected in series. The photoelectric tube is electrically connected with the digital display module and the sound-light alarm module respectively, and the infrared detection module is also electrically connected with the sound-light alarm module.