37results about How to "Implement burn-in testing" patented technology

The invention relates to an aging test method and an aging test device under the multi-field coupling of humidity, heat and force. The method is used for testing polymer materials and test specimens produced by composite materials of the polymer materials, and the test is based on the dynamic monitoring to the tensile creep compliance of the materials under the multi-field coupling of the humidity, the heat and the force. The device is based on a standard humid and hot environmental box controlled by a microcomputer, a test specimen clamping and loading mechanism is arranged in a box of the device, and an electronic extensometer and a laser extensometer are arranged to form a double displacement sensor and are connected to the microcomputer through an acquisition device after the data acquisition. The method and the device have the advantages of accurate and convenient test and low cost, and are suitable for the research of viscous-elastic mechanical properties and aging performances under the operation of polymers and composite materials of the polymers.

The present invention relates to a LED aging test device. The LED aging test device comprises a carrier, a first wiring seat, a second wiring seat, a first clamping piece and a second clamping piece.A groove is configured to adapt a package substrate shape of a sample to be tested of a first type of a LED, the height of a first flange extruded out of the bottom wall is smaller than the height ofthe side wall of the groove relative to the bottom wall of the groove, and the first flange is matched with the bottom wall of the groove to form a first groove body. The first groove body is configured to adapt the package substrate shape of a sample to be tested of a second type of LED. The first clamping piece is configured to clamp one of polar plates of the samples to be tested of the LEDs, and the second clamping piece is configured to clamp the other one of the polar plates of the samples to be tests of the LEDs. The LED aging test device can achieve aging test of the samples to be tested of the two types of the LEDs so as to reduce the test cost.

The invention provides an aging vehicle conveying line and belongs to the technical field of testing. The aging vehicle conveying line solves the problem that more manpower resources need to be consumed when an aging test is carried out on a charger in the prior art. The aging vehicle conveying line comprises a rack and a workbench. The workbench is provided with a conveying mechanism. The conveying mechanism comprises a first driving rolling wheel, a first driven rolling wheel and a first conveying belt, wherein an aging line is fixed to the first conveying belt, conductive carbon brushes are fixed to the aging line, and tooling plates are arranged on the conductive carbon brushes. The workbench is provided with a swing mechanism. The swing mechanism comprises a second driving wheel, a second driven wheel and a second conveying belt. A first transfer mechanism is arranged at the feed end of the first conveying belt and the discharge end of the second conveying belt. A second transfer mechanism is arranged at the discharge end of the first conveying belt and the feed end of the second conveying belt. A control system is arranged on the rack. The aging vehicle conveying line has the advantages that an aging vehicle can be more efficiently tested by being powered on and cyclic operation can be conducted in the conveying process.

The invention discloses an aging testing system for liquid crystal display modules. The aging testing system comprises a downloader, a main control board and multiple sub-control boards connected with the main control board, and the main control board is connected with the downloader. The downloader is used for receiving testing information of the liquid crystal display modules of multiple types of machines to be tested. The main control board is used for providing the testing information of the liquid crystal display modules of the machines to be tested for the corresponding sub-control boards connected with the liquid crystal display modules of the machines to be tested. Each sub-control board is used for generating a testing image signal, the received testing information of the liquid crystal display modules of the machines to be tested and the testing image signals are provided for the corresponding liquid crystal display modules after first signal conversion is performed so that the corresponding liquid crystal display modules can display corresponding testing images according to the signals obtained after first signal conversion is performed, and then aging testing is achieved for the liquid crystal display modules. The aging testing system can be adapted for testing liquid crystal display modules of different types of machines, and can improve testing efficiency.

The invention discloses a multiway input feedback type electronic load system comprising power input ends with a number of N, a summarizing boosted circuit and a total inverter unit, wherein the N is larger than or equal to 2. Each power input end respectively receives a one-way direct-current power signal in a one-one correspondence mode, and transmits the accessed one-way direct-current power signal to a direct current input end of the summarizing boosted circuit. The summarizing boosted circuit works in a constant voltage mode, and the direct-current power signal input by the direct current input end is summarized and then processed in a pressure boost mode. The total inverter unit is connected with a direct-current output end of the summarizing boosted circuit. The total inverter unit is used for converting the direct-current power signal which is processed in a pressure mode by the summarizing boosted circuit to be an alternating current power supply signal. The multiway input feedback type electronic load system is suitable for aging tests of a constant current power source and a constant voltage power source. According to the multiway input feedback type electronic load system, circuit structure is simple, electronic components are greatly reduced, system reliability is high and applicability is wide.

The invention provides an aging device for a charger, belongs to the technical field of testing, and solves the problem that an aging test cannot be performed on the charger efficiently in the prior art. The aging device for the charger comprises a rack, a working table and an aging trolley, wherein the working table is provided with a conveying mechanism; the conveying mechanism comprises a driving roller I, a driven roller I and a driving belt I, and an aging line is fixed on the driving belt I; the working table is provided with a rotary mechanism which comprises a driving roller II, a driven roller II and a driving belt II; the aging trolley comprises a box, a partition board capable of dividing a cavity into a cooling cavity and a loading cavity is fixed in the box, support partition boards are fixed in the loading cavity, loading boxes are fixed on each support partition board, test turnover discs are arranged on the loading boxes and comprises disc bodies, jacks are formed in each disc body, and sockets are fixed in cavities. The aging device for the charger has the advantage that the aging test can be performed on the charger more conveniently and efficiently.

The present invention proposes an aging test method and device for vehicle-mounted multimedia equipment, wherein the method includes: setting a start mark and an end mark in the test multimedia information according to a preset marking strategy; controlling the test multimedia information to play from the start mark when the current When the multimedia information includes the end mark, end this playing of the test multimedia information; the control test multimedia information is played from the start mark to enter the next play of the test multimedia information until the sum of the playing time of the test multimedia information is greater than When it is equal to the preset test duration, the playback of the test multimedia information is stopped, so as to realize the aging test of the multimedia device. Therefore, based on the setting of the start mark and the end mark in the test multimedia information, the determination of the start and end time of the multimedia test information playback is realized at the software level, and the power amplifier component is not required to provide the play start and end time, which reduces the test cost.

The invention discloses a dynamic ageing monitoring system and a dynamic ageing monitoring method for a switch mode power supply of a locomotive. The dynamic ageing monitoring system comprises an industrial control personal computer (PC), a peripheral component interconnect (PCI)-general purpose interface bus (GPIB) card, a PCI system, a GPIB system and an interface unit, wherein the PCI system comprises a programmed switch card and a programmed data acquisition card; the GPIB system comprises a programmed power supply and a programmed load; the industrial control PC, the programmed switch card and the programmed data acquisition card are connected with the PCI-GPIB card through PCI buses; the PCI-GPIB card performs transformation between a PCI protocol and a GPIB protocol; and the programmed power supply and the programmed load are connected with the PCI-GPIB card through GPIB buses. The technical problems that the conventional ageing monitoring system has low universality, dynamic parameters of a power supply board to be detected in the ageing process are lack of detection and result judgment is lack of data support can be well solved, so a dynamic ageing monitoring platform is provided for a switch mode power supply single board of the locomotive.

The invention provides a transporting mechanism for aged vehicles, and belongs to the technical field of tests. By the aid of the transporting mechanism, the problem of excessively high consumption of manpower resources required by aging tests on chargers in the prior art can be solved. The transporting mechanism for the aged vehicles comprises a framework, a worktable, a first driving roller, a first driven roller and a first transmission belt. A first servo motor is horizontally fixed onto the worktable, an aging line is fixed to the transmission belt, conductive carbon brushes are fixed onto the aging line, a tool plate is further arranged on the conducting carbon brushes, and the aged vehicles can be mounted on the tool plate; a control system capable of controlling the rotational speeds of the first servo motor is further arranged on the framework. The transporting mechanism has the advantages that the aged vehicles can be efficiently powered on in conveying procedures, and accordingly aging tests can be carried out on chargers.