477results about "Lamps testing" patented technology

The invention discloses a matrix layout illumination state detection method, device and equipment, and the method comprises the steps: collecting and analyzing a power supply bus current waveform and a single lamp feedback signal, and generating a node feature cluster; extracting a power consumption difference value of adjacent lamps, identifying an abnormal observation point and constructing a fault diffusion chain; marking a timestamp for the fault diffusion chain, determining a fault source, and marking current by injecting characteristics to delimit an influence domain; deploying monitoring anchor points at the boundary of the influence domain, collecting the light color parameter variation and predicting the residual life; extracting the oscillation envelope of the starting current peak, evaluating the health degree of the driver and generating a maintenance density field; and a three-dimensional detection field is constructed by fusing multi-dimensional detection data, singular points are searched, and coordinates of a fault lamp are accurately analyzed through fault positioning pulses. According to the invention, three-dimensional monitoring from electrical characteristics and optical performance to driver states is realized, a single lamp fault can be accurately positioned, a life trend can be predicted, fault propagation can be tracked, and technical support is provided for intelligent operation and maintenance of a large-scale illumination system.

The invention relates to the technical field of LED lamp testing, and discloses an LED lamp testing method and device, testing equipment, a testing system and a storage medium, and the method comprises the steps: generating a corresponding adjustment parameter based on a preset adjustment instruction, and transmitting the adjustment parameter to a to-be-tested device, the to-be-tested equipment is used for adjusting the LED lamp and the camera according to the adjusting parameters; sending a shooting instruction to the to-be-tested equipment, so that the to-be-tested equipment irradiates the standard color card with light emitted by the adjusted LED lamp, and shooting the standard color card through the adjusted camera to obtain a target image; and obtaining a test result corresponding to the LED lamp according to the target image. According to the invention, through synchronous adjustment and collection of cooperative output of illumination and imaging under a controllable condition, integrated performance evaluation of the LED lamp on the to-be-tested device is realized, and a single LED lamp does not need to be disassembled to be tested, so that the test process is simplified.

The invention discloses a rapid aging test device and evaluation method for an LED advertising lamp box, and relates to the field of aging test devices.The rapid aging test device comprises an end base and a supporting table, a lower test area is fixedly arranged on the upper side of the end base, a middle test area is installed on the upper side of the lower test area, and an upper test area is installed on the upper side of the middle test area; a top frame is fixedly mounted at the top of the upper test area, a supporting frame is connected to the bottom of the end seat, a base is fixedly connected to the bottom of the supporting frame, universal wheel mounting hole positions are formed in the bottom of the base, and the base is placed in the aging test room. According to the rapid aging test device for the LED advertising lamp box, the three-dimensional space of a test room is fully utilized through the layered and partitioned design, the containing capacity of a unit area is greatly improved, space waste caused by plane placement is avoided, LED lamp boxes of multiple batches and multiple models can be tested at the same time, and the test efficiency is improved.

The invention relates to the technical field of fault diagnosis, in particular to an intelligent street lamp fault diagnosis and maintenance system, which comprises a signal collaborative acquisition module, a frequency domain conversion module, a fault identification module, a coupling verification module and a maintenance scheduling module. According to the invention, through a multi-source data synchronous acquisition and time sequence alignment technology, the influence of external environment interference on monitoring data is eliminated, and the stability and accuracy of photoelectric signals are ensured. Stable signal features are extracted through frequency domain conversion and feature screening, accurate fault recognition is achieved based on frequency components and similarity calculation, multi-dimensional verification is conducted in combination with instantaneous power comparison and communication delay detection, the accuracy and reliability of fault judgment are improved, therefore, misjudgment and missed judgment are avoided, maintenance scheduling is optimized, and the fault diagnosis efficiency is improved. The fault response efficiency and the overall stability of the street lamp system are improved, maintenance lag and resource waste caused by inaccurate fault diagnosis are effectively reduced, and the operation reliability and the maintenance response speed of the street lamp are improved.

The invention provides a traffic signal lamp data quality detection method, a traffic signal lamp data quality correction method and related equipment, and the method comprises the steps: receiving traffic signal lamp data reported by traffic signal lamp equipment in real time based on a distributed stream processing architecture, carrying out the structural processing, and extracting equipment identification, timestamp, signal state, phase information and other fields; in a distributed stream processing architecture, anomaly detection tasks of multiple dimensions of data timeliness, signal logic consistency and equipment online state are executed in parallel, data quality marks including anomaly types and corresponding anomaly parameter values are generated, and traffic signal lamp data with quality labels are formed. And for the detected abnormal data, executing corresponding data correction strategies according to different abnormal types, and issuing the corrected traffic signal lamp data to a downstream service module for use. According to the invention, high-concurrency and low-delay data processing is realized in a scene of dense deployment of multi-source traffic signal lamp equipment, and the real-time performance and accuracy of the traffic signal lamp data are improved.

The present teachings relate to a method for identifying reusable components of a vehicle lamp assembly, the method including: i) performing an electric circuit functionality test on each component of a plurality of components of the vehicle lamp assembly; ii) performing an illumination test on each light source within the vehicle lamp assembly; iii) identifying which of the components of the plurality of components pass and / or fail the electric circuit functionality test; and iv) identifying which light sources pass and / or fail the illumination test.

The utility model relates to the technical field of filament detection equipment, and discloses a vehicle H7 bulb filament detection mechanism, which comprises a working platform, and a tray is arranged at the top end of the working platform. According to the vehicle H-shaped bulb filament detection mechanism, due to the design of a second air cylinder and a first air claw, a plurality of bulbs can be accurately clamped and conveyed into a moving block, due to the design of a first air cylinder, the bulbs on the moving block can be sequentially aligned with the second air claw, and due to the fact that the second air claw is provided with two grippers, the bulbs can be accurately clamped and conveyed into the moving block. Due to the design of the power-on detection module and the current sensor, power-on detection can be conducted on the bulbs, and when lamp filaments of the bulbs break down, the current sensor stops the device and gives an alarm to attract attention of operators. And due to the design of the camera and the illuminating lamp, the lamp filament can be photographed and detected, so that the bulb can be efficiently and accurately detected.

The invention relates to the technical field of lighting equipment, and provides an intelligent fault diagnosis method and system for LED lighting equipment, for each LED street lamp, extracting multi-dimensional data information of the LED street lamp in a first preset time period from a multi-dimensional state matrix, and determining whether the LED street lamp has a potential fault based on the multi-dimensional data information. If the potential fault exists, generating a pre-selected fault set of the LED street lamp based on the multi-dimensional data information; for each pre-selected fault in the pre-selected fault set, performing extension calendar analysis on the pre-selected fault based on extension structure information of the LED street lamp network to obtain fault influence node information corresponding to the pre-selected fault, and based on the state information of each fault influence node in the fault influence node information in a second preset time period, judging whether the pre-selected fault exists, and if so, determining that the pre-selected fault is a target fault corresponding to the LED street lamp. The method improves the accuracy of fault detection.

The invention discloses a PLC-IoT street lamp electric leakage detection method and system based on edge calculation, and relates to the technical field of smart power grids and Internet of Things. According to the invention, the self-adaptive threshold adjustment algorithm is adopted to dynamically calibrate the electric leakage detection threshold, so that the problem that the traditional fixed threshold method is easy to generate false alarm or missing alarm when the environment changes is effectively solved, and the accuracy and reliability of detection are remarkably improved; through a multi-node collaborative decision algorithm and a data fusion technology, the regional electric leakage risk can be accurately judged, misjudgment caused by local interference in single-node detection is avoided, the robustness of the system is enhanced, through a parameter optimization mechanism and a machine learning regression algorithm, an environment correction coefficient and detection algorithm parameters can be dynamically adjusted, and the reliability of the system is improved. The electric leakage risk trend is predicted, dynamic and accurate evaluation of the electric leakage risk is realized, and the intelligent level and the management efficiency of the system are improved.

The utility model, which relates to the technical field of the LED, discloses a leakage protection circuit comprising a power supply circuit, a step-down circuit, an LED circuit and a detection circuit. The input end of the power supply circuit is connected to the output pin of the power supply end, the output end of the power supply circuit is connected with the input end of the step-down circuit and the input end of the LED circuit, and the power supply circuit is used for rectifying the output power supply of the power supply end so as to output the power supply to the step-down circuit and the LED circuit; the output end of the step-down circuit is connected with the detection circuit, and the step-down circuit is used for carrying out step-down processing on the power supply output by the power circuit to output reference voltage to the detection circuit; and the detection circuit is respectively connected with the output pins of the power supply end and the LED circuit, and is used for controlling the working state of the LED circuit according to the real-time voltage difference and the real-time voltage between the output pins of the power supply end and the reference voltage output by the step-down circuit. According to the utility model, the working state of the LED circuit can be controlled according to the real-time voltage difference, the real-time voltage and the reference voltage, thereby realizing anti-creeping protection.

A commercial vehicle rear brake lamp fault diagnosis method and system and a storage medium, and the method comprises the steps: determining the change characteristics of the working current of each brake lamp along with the working temperature based on the working current and working temperature of each brake lamp collected in real time; the load type of each brake lamp is determined according to the change characteristics; the load type comprises a halogen bulb and an LED module; presetting a plurality of diagnosis parameters and acquiring parameter values of the diagnosis parameters in real time; based on a preset weight coefficient of each diagnosis parameter, performing weighted fusion calculation on each parameter value to obtain a fault confidence coefficient of each brake lamp; and performing real-time fault diagnosis on each brake lamp according to each parameter value of each brake lamp and the fault confidence in combination with a diagnosis strategy corresponding to the load type of each brake lamp. The technical problem that the fault misjudgment rate is high under complex working conditions due to the fact that a preset mode is mainly adopted in the prior art, the load class of the rear brake lamp of the trailer is configured with a fixed diagnosis threshold value, and fault judgment is carried out only depending on a single parameter is solved.

The invention discloses an electrical cabinet door state monitoring system and method based on millimeter wave radar induction. The system comprises a cabinet body, a cabinet door, a millimeter wave radar, a control unit and controlled equipment. The controlled equipment is an illuminating lamp; the cabinet door is rotationally connected with the cabinet body, and the cabinet door can be opened or closed relative to the cabinet body; according to the invention, a non-contact monitoring mode based on the millimeter-wave radar is adopted, the abrasion problem caused by mechanical contact of a traditional mechanical microswitch is avoided, and meanwhile, the working parameters of the millimeter-wave radar are dynamically adapted through a multi-source time-varying interference coupling model, so that the state of the cabinet door is accurately judged; the control logic of the illuminating lamp is optimized through an opening degree, illumination and power three-dimensional coupling adjustment strategy, accurate matching of the power of the illuminating lamp and actual use requirements is achieved, and the applicability of illumination control is improved; fault prediction is realized through a time-space fusion model of time sequence attenuation and fault risk weight, and long-term stable operation of the system is guaranteed.

The invention discloses an LED dead pixel detection method, device and equipment based on laser reflection and a medium, and relates to the technical field of LED lamp detection, and the method comprises the steps: controlling a laser light source to irradiate a to-be-detected LED lamp; collecting a reflected light signal; preprocessing the reflected light signal to obtain an input signal; and judging whether the LED lamp is normal based on the input signal. According to the invention, laser reflection detection is adopted to replace traditional optical imaging, the monochromaticity and directivity of laser are utilized to overcome ambient light interference, and a darkroom or complex filtering is not needed. Meanwhile, the combination of the laser light source and the photoelectric sensor significantly reduces the cost of the system, and avoids the use of a high-resolution camera. The laser can focus a micron-sized light spot, and the sub-pixel-level micro structure abnormity can be identified with high precision by analyzing the energy change of a reflected light signal. More importantly, according to the method, non-luminous defects such as packaging cracks and colloid stripping can be synchronously detected by capturing the reflection characteristics of the physical structure of the LED instead of depending on the luminous state of the LED, so that the defect detection accuracy is effectively improved.

A trailer light monitoring module is configured to electrically couple with lights on a trailer and include an input configured to receive electrical power from a battery; an output configured to electrically couple with lights on a trailer and selectively communicate the electrical power from the battery; a learning button, the activation of which determines a quantity of possible channels through which trailer lights could receive electrical power, and also determines how many of the quantity of possible channels actually receive electrical power; and a plurality of channel diagnostic blocks each including a tunable current sensor having a variable resistor that is tunable based on an output voltage received.

The embodiment of the invention provides a light-emitting device detection device and method, and relates to the technical field of display. In the light-emitting device detection device and method, the light-emitting device grabbing unit grabs the light-emitting device, the second coil in the light-emitting grabbing unit induces the change of the electromagnetic signal in the first coil to generate the induction current used for driving the light-emitting device, and the detection unit detects whether the light-emitting device normally emits light under the action of the induction current. Compared with the prior art, physical contact points and connecting lines required in the test can be reduced, the possibility of damaging the light-emitting device by manual intervention is reduced, meanwhile, the performance of the light-emitting device can be effectively detected, and the detection accuracy is improved.

The utility model relates to the technical field of industrial semiconductors, and discloses a device for detecting the working state of a lamp holder of ultraviolet light curing equipment, which integrates temperature, wind pressure and ultraviolet light intensity detection functions by optimizing the structure of a hardware circuit. The circuit comprises a switch type capacitor voltage converter, a linear voltage regulator, a phototriode, an NTC thermistor, a partial pressure sensor and a CAN communication module. Through the bidirectional TVS diode, RC filtering and two-stage voltage stabilization design, the anti-electromagnetic interference capability is improved, and the signal transmission reliability is improved; temperature, wind pressure and illumination detection circuits are integrated on a single board, the structure is simplified, and the space is saved; the standby energy consumption of the sensor is reduced through hardware power management; by comprehensively optimizing the circuit structure and the signal transmission path, the detection reliability of the working state of the lamp holder of the ultraviolet curing equipment is improved.

The invention provides an automatic detection system and method for an automobile projection lamp, and the system is provided with a testing machine table and an assembling machine table, and a feeding and discharging assembly, a tool carrier and airtightness detection assembly, a laser marking machine and a screw driving assembly are disposed around an annular assembling platform of the assembling machine table. The test platform comprises an imaging colorimeter detection assembly, an electrical performance test assembly and a mobile module, automatic assembly and functional test of the automobile projection lamp can be realized, and pattern detection and product traceability functions are effectively realized.

The invention provides a CD-ROM integrated light-emitting device detection device and a detection method thereof.The CD-ROM integrated light-emitting device comprises a carrier plate, an LED chip, a driving chip and a plurality of pins, the detection device comprises a workbench, a visual mechanism, a probe mechanism and an integrating sphere, the workbench comprises a transparent bearing plate, and when the CD-ROM integrated light-emitting device is borne on the transparent bearing plate, the LED chip is driven by the probe mechanism to rotate; the LED chip is positioned on one side, close to the transparent bearing plate, of the carrier plate; the visual mechanism is arranged above the transparent bearing plate and is used for acquiring image information; the probe mechanism is used for electrically connecting a probe with a pin in the CD-ROM integrated light-emitting device according to the image information so as to carry out an electrical test on the CD-ROM integrated light-emitting device; the integrating sphere is arranged below the transparent bearing plate and used for receiving emergent light of the LED chip so as to carry out optical testing on the CD-ROM integrated light-emitting device, and the detection equipment and the detection method of the CD-ROM integrated light-emitting device have the advantage of being high in photoelectric testing efficiency.

An inspection system includes an excitation light source, a voltage-sensing film, an illumination light source, an image capture device. The excitation light source provides an excitation beam to light-emitting diodes to generate open-circuit voltages. The voltage-sensing film is at a top side of the light-emitting diodes and includes a voltage-sensing medium layer and a first electrode layer. The first electrode layer is in the voltage-sensing medium layer to provide a gain effect of the open-circuit voltages, so that the voltage-sensing medium layer senses the open-circuit voltages, and a display of the voltage-sensing medium layer is changed with a portion or all of the open-circuit voltages. The illumination light source provides an illumination beam to the voltage-sensing film to generate a sensing image according to a display change. The image capture device is on a transmission path of the sensing image and receives the sensing image to generate an inspection result.

The application belongs to the technical field of intelligent lighting fault diagnosis, and relates to a lighting system fault intelligent diagnosis method and system based on multi-sensor fusion, which comprises the following steps: constructing a BLE Mesh network; acquiring an environment static object existing signal through an infrared sensor, acquiring a target dynamic speed signal through a radar sensor, and acquiring voltage, current and PWM signals of each node of the BLE Mesh network respectively; data preprocessing: performing feature level fusion on the data; calculating a fault confidence; and the system comprises a data acquisition layer, a network layer and a diagnosis layer. Through multi-sensor monitoring data and data fusion, the application greatly reduces the fault false alarm rate, and based on the constructed BLE Mesh network, fault positioning can be quickly performed through dynamic routing, so that the fault positioning time is shortened.

The invention discloses a vehicle light fault detection method, device and equipment and a storage medium, and relates to the technical field of vehicle control, and the method comprises the steps: determining a target lamp based on a target light function, and sending a lighting command to the target lamp; determining a light control state of the target lamp under the control of the lighting command; based on the light control state of the target lamp, performing fault detection on the target lamp, and determining a detection result of the target lamp; determining a detection result of a light domain based on the detection result of the target lamp; and determining a detection result of the target light function based on the detection result of the light domain. Through the above mode, fault detection pressure is dispersed to different levels, a hierarchical cooperation mechanism is adopted to improve fault processing efficiency, fault detection is carried out on the control state of the lamp according to the lighting command, invalid operation is prevented from being carried out in the turn-off period of the lamp, and resource consumption is reduced.

The application relates to the technical field of LED lamp testing, and discloses an LED lamp testing method, device, testing equipment, testing system and storage medium, the method comprising the following steps: generating corresponding adjustment parameters based on preset adjustment instructions, and sending the adjustment parameters to a to-be-tested device, so that the to-be-tested device adjusts the LED lamp and a camera according to the adjustment parameters; sending a shooting instruction to the to-be-tested device, so that the to-be-tested device uses the adjusted LED lamp to emit light to irradiate a standard color card, and obtains a target image by shooting the standard color card through the adjusted camera; and obtaining a corresponding test result of the LED lamp according to the target image. Through synchronous adjustment and collection of the cooperative output of illumination and imaging under controllable conditions, integrated performance evaluation of the LED lamp on the to-be-tested device is realized, separate LED lamps are not needed to be disassembled and tested, and the test process is simplified.

The invention discloses an LED lamp detection method, device and equipment and a medium, and relates to the field of LED lamps, the method comprises the following steps: obtaining model information of a to-be-detected lamp, and calling a corresponding preset model template for the to-be-detected lamp from a preset database according to the model information; the preset model template comprises a preset deployment detection model, a preset front-end processing model deployed at the front end of the preset deployment detection model, a preset rear-end processing model deployed at the rear end of the preset deployment detection model and a processing logic relationship among the models; deploying each model according to a preset model template, and determining input information of the to-be-detected lamp according to the preset model template; and processing the input information by using a preset model template to obtain a lamp detection result of the to-be-detected lamp. The detection efficiency can be improved while the detection precision is improved, the model needing to be deployed can be flexibly replaced according to the preset model template, and the detection requirements of lamps of different models are met.

This invention belongs to the technical field of DC power supply information acquisition devices, specifically relating to a DC power supply information acquisition and synthesis device. The invention includes an embedded monitoring host connected to an acquisition and synthesis module. The embedded monitoring host includes: an upper-level monitoring device, a lower-level monitoring device, a main control chip, and a display device. The acquisition and synthesis module includes: an AC input voltage acquisition module, a DC voltage and current acquisition module, a switch quantity acquisition module, a fault hard contact output module, and a communication module. The AC input voltage acquisition module, DC voltage and current acquisition module, switch quantity acquisition module, and fault hard contact output module are each connected to the communication module. The communication module is connected to both the upper-level and lower-level monitoring devices. This invention features a simple structure, convenient wiring, high integration, stable performance, good scalability, and low cost.

The invention relates to the technical field of on-line testing of light emitting diode production and manufacturing, and provides an LED testing circuit and a testing method thereof. The method comprises the following steps: providing a test power supply for a to-be-tested plate provided with a to-be-tested multicolor light emitting diode, and lightening light emitting diode lamps with different colors on the to-be-tested plate one by one according to a preset color; after a light emitting diode with a color to be detected is turned on every time, three paths of light sensing parameters of current light emitting are collected through a light sensing sensor, the three paths of light sensing parameters are compared, and the color actually emitted by the current light emitting diode is determined according to a preset color judgment logic and the size relation of the three paths of light sensing parameters; comparing the actually judged color with the currently-lightened preset color, if the color is consistent with the currently-lightened preset color, judging that the light-emitting diode works normally, and if the color is not consistent with the currently-lightened preset color, judging that the light-emitting diode works abnormally; and testing of all the to-be-detected color light emitting diodes is completed successively, and a final LED testing result is obtained.

The invention provides a running state detection device of an LED or an LED string. The running state detection device comprises a main control unit; the resistor or the resistor string is connected with the LED or the LED string in series; and a signal switching module. The LED or the LED string and the resistor or the resistor string form an LED and resistor string; two ends of the resistor or the resistor string are respectively connected with the main control unit; the main control unit is also connected with the LED and the second end of the resistor string; the first connecting end of the signal switching module is connected with the LED and the second end of the resistor string; a second connecting end of the signal switching module is connected with the main control unit; wherein the main control unit is configured to provide an LED control signal to the LED and the second end of the resistor string; the LED control signal passes through the signal switching module to form an LED control monitoring signal, and the LED control monitoring signal is transmitted to the main control unit.

The utility model provides a kind of detector, including test box, test table, test stand, power supply component and detection component, test table is installed in the inner chamber of test box, for placing the circuit board to be detected;One end of test stand is rotatably connected with test table;Power supply component includes power supply circuit and the test needle electrically connected to power supply circuit by cable, test needle is fixed on test stand, test stand can press test needle on the pin of circuit board when rotating;Detection component includes camera and controller, camera is installed in the inner chamber of test box and is located above test table, camera can take photograph to the circuit board after power on, and the picture data obtained by shooting is transmitted to controller to detect identification. It can realize the number of the lamp that specified color light is emitted on the circuit board to automatic detection, to improve the efficiency and accuracy of detection.

This invention discloses a test piece for evaluating the color quality of automotive ambient lighting, comprising: a housing, a light mixing component, and a light homogenizing component, the light mixing component and the light homogenizing component being fixed within the housing; the light mixing component includes a light inlet, a light mixing body, and a light outlet, the area of ​​the light inlet being smaller than the area of ​​the light outlet; the light homogenizing component contains an integrating sphere, and an end face opening is formed on the lower end face of the light homogenizing component, the end face opening communicating with the light outlet of the light mixing component; a side opening is formed on the side of the light homogenizing component, the side opening connecting to a fiber optic socket; the fiber optic socket is connected to external optical analysis equipment via optical fiber. The light mixing component can achieve total internal reflection of most incident light rays. The light emitted by the LED beads, after passing through the total internal reflection tetrahedral structure, is homogenized by the small integrating sphere cavity made of high diffuse reflectivity material, thus retaining most of the energy. Due to the small volume of the integrating sphere cavity, array testing can be performed on densely packed PCBA modules, accelerating the testing cycle, improving testing efficiency, and reducing manufacturing costs.

A method for determining battery health includes discharging a battery such that its voltage decays exponentially from a first voltage value to a second voltage value over a first duration. The method includes, during the first duration in which the voltage of the battery decays from the first voltage value to the second voltage value, selecting a third voltage value at which the voltage of the battery is depleted at a constant test drain rate. The method includes applying a load to the battery at the third voltage value for a second duration, withdrawing the load from the battery after the second duration has lapsed, and determining a fourth voltage value of the battery after the load was withdrawn. The method also includes determining an indication indicative of a state of health of the battery based on a difference between the third voltage value and the fourth voltage value.

The utility model relates to a multifunctional incoming material inspection device which comprises a tool plate and a power supply module arranged on the tool plate, and a plurality of test modules are detachably installed on the tool plate. The test module comprises an optocoupler test module, a nixie tube test module, an LED lamp test module, a buzzer test module, a cable test module, a panel test module, a power supply chip test module, a digital-to-analog converter test module, an analog-to-digital converter test module, an operational amplifier test module and a chip function integration test module. Compared with the prior art, the system has the advantages of being good in expansibility, high in integration level, simple to operate, capable of improving efficiency and the like.