260results about "Lamps testing" patented technology

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 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 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 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 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.

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.

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.

The utility model relates to an aging test device for luminous characters. The aging test device comprises a support. The testing point electric shock prevention assembly is arranged on the support, the testing point electric shock prevention assembly is used for improving the testing efficiency and comprises a fixing box, a side plate and a first insulating plate, the fixing box is fixedly arranged below the support, the side plate is arranged on one side of the fixing box, and the first insulating plate is arranged on the side plate. The first insulating plate is fixedly arranged in the middle of the side wall of the support and penetrates through the fixing box, through the use of the measuring point anti-electric-shock assembly and the fixing assembly, when a plurality of light-emitting character plates are tested at the same time, a large space for applying work can be provided for the light-emitting characters, and the working efficiency of the light-emitting characters is improved. The problem that a plurality of light-emitting character plates are compact and cannot reach positive and negative electrode test points is solved, the definition of positive and negative electrode points can be improved, positive and negative electrode wiring errors are prevented, meanwhile, circuits on the light-emitting character plates can be rapidly fixed through one-hand operation, the test efficiency is greatly improved, the use convenience is improved, and use is convenient.

The utility model discloses an LED lamp automatic plugging and testing device which comprises a material seat, a fixed clamping block is vertically and fixedly connected to the middle position of the lower end of a first lead screw sliding rail, first lead screw mechanisms are installed on the two sides of the inner wall of the first lead screw sliding rail in a penetrating and plugging mode, and first lead screw sliding blocks are installed on the outer walls of the first lead screw mechanisms in a sleeving mode. The first lead screw sliding block is installed on the inner wall of the first lead screw sliding rail in a sliding and inserted mode, and the lower end of the first lead screw sliding rail is fixedly connected with a movable clamping block. The inner wall of the LED lamp automatic plugging and testing equipment drives a fixed clamping block and a movable clamping block to perform transverse and lifting movement through a supporting frame and an electric push rod, parallel multi-group grabbing can be performed, the detection efficiency is better, the supporting frame can be driven by a second servo motor to rotate towards a qualified product storage box and an unqualified product storage box, and the detection efficiency is improved. And moreover, the qualified product storage box and the unqualified product storage box can be quickly disassembled and assembled through the magnetic splicing blocks and the magnetic splicing grooves, and quick transfer is facilitated.

This application relates to the field of online testing technology for LED manufacturing, and provides an LED testing circuit and its testing method. The method includes: providing a test power supply to a test board on which multi-color LEDs are mounted; sequentially illuminating LEDs of different colors on the test board according to preset colors; after illuminating each LED of a specific color, collecting three photosensitive parameters of the current emission through a photosensitive sensor, comparing the magnitudes of the three photosensitive parameters, and determining the actual color emitted by the LED based on the relationship between the magnitudes of the three photosensitive parameters according to a preset color determination logic; comparing the actual determined color with the currently illuminated preset color; if they match, the LED is determined to be working normally; if they do not match, it is determined to be malfunctioning; and sequentially completing the testing of all LEDs of the colors to be tested to obtain the final LED test result.

The application provides a smart lighting detection system integrating an unmanned aerial vehicle and a smart lamp pole, an integrated module realizes integration of an unmanned aerial vehicle base station and a sensor on the smart lamp pole, installation space and cost of independent equipment are saved, centralized management and maintenance are facilitated, an data interaction module can more comprehensively and accurately determine street lamp fault information by fusing sensor environment data and unmanned aerial vehicle detection data, reduces error of a single data source, improves accuracy and efficiency of fault judgment, an intelligent scheduling module can optimize detection path and resource allocation and improve pertinence and timeliness of detection by scheduling unmanned aerial vehicles based on actual fault conditions, street lamp distribution and real-time demand, especially can quickly respond in an emergency, and a control module can control brightness and determine a repair sequence according to detection results, so that energy-saving operation of street lamps can be realized, key area faults can be preferentially processed, efficient and stable operation of a lighting system is ensured, and urban lighting management level is improved.

The utility model relates to the field of optical parameter monitoring circuits, and particularly discloses a stage lamp optical parameter monitoring circuit, which comprises an optical sensor mounted beside an LED light source and used for acquiring optical parameters of the LED light source in real time, and an LED light source driving chip electrically connected with the positive electrode and the negative electrode of the LED light source, the output end of the optical sensor is electrically connected with an MCU controller used for obtaining LED light source optical parameters collected by the optical sensor, and the serial port communication end of the MCU controller is electrically connected with a storage device used for the MCU controller to retrieve and store the set LED light source optical parameters according to the LED light source optical parameters. The PWM end of the MCU controller outputs digital signals to the digital signal input end of the LED light source driving chip according to the LED light source optical parameters and the set LED light source optical parameters.

The invention provides an illumination system fault detection method and system, electronic equipment and a storage medium, and relates to the technical field of automatic control. Comprising the following steps: an illumination actuator controls operation of target illumination equipment according to an equipment control instruction issued by an illumination controller, detects a current value and a voltage value of a power supply channel corresponding to the target illumination equipment in real time, and sends the current value and the voltage value to the illumination controller; the lighting controller determines fault information of a loop where the target lighting equipment is located according to the current value and the voltage value of the power supply channel corresponding to the target lighting equipment and the standard current range and the standard voltage range of the target lighting equipment; and the lighting controller uploads the fault information of the loop where the target lighting equipment is located to the upper computer for recording and displaying. According to the scheme, the fault type can be specifically judged, and the accuracy of fault analysis is improved. Dependence on technicians is remarkably reduced, and field troubleshooting difficulty and human input are reduced.

The application relates to a measuring module and an LED dimming circuit using the same. The measuring module is electrically connected with a PWM signal generating module and a driving device module. The measuring module is used for detecting a PWM signal and a driving device pass signal. The measuring module comprises a measuring processor, a first measuring capacitor and a second measuring capacitor. The first measuring capacitor is arranged at a signal output end of the PWM signal, and the signal output end is located between electrode plates of the first measuring capacitor. The second measuring capacitor is arranged at a controlled output end of the driving device, and the controlled output end is located between electrode plates of the second measuring capacitor. The electrode plates with the same polarity are electrically connected. The electrode plate with the positive polarity is electrically connected with the measuring processor and outputs a measuring signal. The electrode plate with the negative polarity is grounded. The measuring processor receives the measuring signal, compares the measuring signal with a built-in reference signal, and outputs a measuring result. The application has the effects of reducing the hardware resource demand and improving the measuring stability.

The invention discloses an OLED module aging life test system, and relates to the technical field of OLEDs, and the system comprises the following steps: carrying out OLED module stress condition division and equivalent stress dose modeling; calculating the equivalent life of the OLED module on different stress paths; performing multi-dimensional quantitative characterization to obtain a color shift coupling degradation index; carrying out life threshold mapping and dynamic life calculation to obtain equivalent residual life; performing degradation path inversion to obtain a mechanism sensitive factor; and constructing an evaluation model, and rating a test result. According to the invention, complete chain type parameter transmission from stress application, optical measurement and degradation quantification to life prediction and mechanism discrimination is realized; the system not only can form a unified degradation evaluation dimension under different voltage, current and temperature conditions, but also can integrate brightness, color cast and life indexes into a multi-dimensional evaluation system, and greatly improves the precision and stability of OLED module life prediction.

The application relates to a kind of detection method, device, system and storage medium of LED lamp bead, comprising the following steps, the electrode of the LED lamp bead is tested, and the initial current value of the LED lamp bead is obtained;Based on the initial current value, the LED lamp bead is applied to step voltage, and voltage-current curve is obtained;The LED lamp bead corresponding to the rated operating point in the voltage-current curve is detected by optical detector, and the light spot image is obtained;Based on the light spot image, the LED lamp bead is tested by reverse voltage, and the reverse leakage current value is obtained;Based on the voltage-current curve, light spot image and reverse leakage current value, the quality of the LED lamp bead is evaluated, and the quality evaluation result of the LED lamp bead is obtained, which solves the technical problem that the traditional detection method is mainly concentrated on simple on-off test or single parameter measurement, and it is difficult to comprehensively reflect the comprehensive performance of LED lamp bead.

The utility model relates to the technical field of headlight detection, in particular to a headlight detection system, which comprises a power supply module, a shunt resistor, an INA237 chip, a microcontroller, an alarm module and a communication module, the power supply module is used for being connected with an automobile power supply and supplying power to a circuit, the shunt resistor is connected in series in an automobile headlight power supply loop and used for current sampling, and the INA237 chip is connected with the microcontroller. The microcontroller is in communication connection with the INA237 chip and used for receiving and processing current, voltage and temperature data, the alarm module is connected with the microcontroller and used for receiving abnormal signals output by the microcontroller and giving an alarm, and the communication module is connected with the microcontroller and used for transmitting detection data to external equipment. The utility model provides a high-integration and high-precision detection circuit based on an INA237 chip, which realizes real-time monitoring and abnormal alarm of current, voltage and temperature of an automobile headlamp.

The utility model provides an automobile LED lamp overhauling and detecting device. The automobile LED lamp overhauling and detecting device comprises a shell; an inner cavity is formed in the shell; an opening communicated with the inner cavity is formed in the bottom of the shell; a sealing cover which can be closed or opened is arranged on the opening; a power storage module; the power storage module is installed in an inner cavity of the shell. A control module; the control module is installed in an inner cavity of the shell. The control module is electrically connected with the power storage module; a connection terminal; the connecting terminal is installed on the outer side of the front end of the shell and connected with the control module of the inner cavity through a circuit. The shell is provided with a button, and the button is electrically connected with the control module. According to the utility model, the defect that the use is inconvenient when the vehicle LED headlamps are tested in the prior art is overcome, the input and update of control parameters are input and updated into the control module through the input device, and the parameters of the output power supply can be adjusted in real time, so that the vehicle LED headlamps can be adapted to different vehicle LED headlamps.

The invention relates to the technical field of vehicle lamp detection, and discloses a method for carrying out batch light function test verification on vehicle lamps by using a WIOTa network, and the method comprises the steps: a PC control center module which has the Ethernet communication capability and is used for initiating a test process, issuing a test instruction, receiving and storing test data, carrying out the comparative analysis of the test data, and automatically generating a test report; the WloTa gateway module comprises a WloTa main node and a plurality of WloTa sub-nodes; and the WloTa main node is connected with the PC control center module through the Ethernet, and communicates with the plurality of WloTa sub-nodes through a WloTa wireless protocol. According to the method for carrying out batch light function test verification on the vehicle lamps by using the WIOTa network, a WIOTa wireless network architecture and a hierarchical networking design are adopted, and centralized instruction issuing and data processing of a PC control center are combined, so that batch automatic test of large-scale vehicle lamps is realized, and the defects of low efficiency and poor consistency of traditional manual or semi-automatic test are overcome.

The utility model relates to the technical field of lamp strip production equipment, in particular to falling frame rolling equipment. The falling frame rolling equipment comprises a rotating frame, a power assembly, a speed regulator and a switch assembly, the rotating frame is arranged at the top of the power assembly and connected with the power assembly, the switch assembly is electrically connected with the speed regulator, the speed regulator is electrically connected with the power assembly, and when the switch assembly is turned on, the rotating frame is driven to rotate by the speed regulator. The speed regulator is used for receiving a preset driving signal and driving the power assembly to rotate, and the power assembly drives the rotating frame to rotate in the first preset direction or the second preset direction. The winding direction is controlled and adjusted through bidirectional rotation by receiving the preset driving signal, tension concentration is avoided, and the problem that in the prior art, due to unidirectional rotation, a lamp strip is prone to being knotted and wound in the winding process is solved.

The utility model discloses a kind of lighting electrical appliance manufacturing with electric performance detection device, it is related to luminaire detection device technical field, including operation platform, the outside of operation platform is equipped with detection machine, the outside of detection machine is connected with electric disc, the inside rotation of operation platform is connected with fixed shaft, one end of the fixed shaft is fixedly installed with rotating disc, the inside sliding connection of rotating disc has locating rod one, one end of locating rod one is fixedly installed with placing plate, by the cooperation between rotating disc and pressing plate, the rotation of rotating disc can control luminaire alternate movement, pressing plate is controlled by electric push rod and buffer assembly and moves down the upper surface of luminaire, connector can be electrified into the inside of electric disc, by detection machine, the power and current of luminaire and other information can be detected, realize the function of stable compact detection to luminaire, it is beneficial to reduce the problem of uneven pressure exertion when long time manual detection.

This invention discloses a method, device, and medium for assessing street light leakage risk based on residual current, relating to the field of street light risk assessment technology. The method includes dividing historical residual current data from the low-voltage side of a dedicated street light transformer into a risk-to-be-investigated dataset and a normal baseline dataset; calculating the baseline mean and baseline standard deviation based on the normal baseline dataset; calculating the investigation mean based on the risk-to-be-investigated dataset; if the difference between the investigation mean and the baseline mean is greater than or equal to n times the baseline standard deviation, the dedicated street light transformer is determined to have a high risk of water immersion leakage; for street lights within the power supply range of a dedicated street light transformer with a high risk of water immersion leakage, the street lights with high water immersion leakage risk are determined based on a comparison of the vertical height of the bottom edge of their maintenance door from the ground and a water depth threshold. This invention, by establishing a dynamic statistical benchmark and significance testing, achieves the distinction between normal aging current of the line and sudden water immersion current during rainstorms.

The invention provides an illumination batch test tool, which solves the problems of large-batch lamp detection and the like, and comprises a product test box, the product test box is connected with a test board through a CAN bus, an MCU module is arranged in the test board, the MCU module is connected with lamp holders and a power supply through relays, the lamp holders are arranged along the axial direction of the test board and are respectively provided with a lamp holding assembly, and the lamp holding assemblies are arranged on the test board. And a power connection assembly is mounted on the lamp holder. The device has the advantages of good adaptability, stable structure and the like.

The utility model discloses a lamp panel verification controller which comprises a control circuit, a communication circuit, an acquisition circuit, a trigger circuit, a power supply circuit and an interface circuit. The lamp panel verification controller provided by the utility model realizes automatic detection of a vehicle lamp, is high in detection accuracy, improves the detection efficiency, and reduces the detection cost.