Testing device for LED lighting inspection

Abstract

The utility model discloses a testing device used for LED lightening inspection, comprising a DC power supply, a single-chip microcomputer, a plurality of relays, a plurality of lamp panels to be tested and indicating lamps, the DC power supply comprises a constant current output end and a constant voltage output end, the constant current output end is used for supplying power to the relays, the constant voltage output end is used for supplying power to the single-chip microcomputer, the single-chip microcomputer is connected with the relays, and the single-chip microcomputer is connected with the relays. The single-chip microcomputer is used for controlling on-off of the relay and collecting and judging the voltage value of the lamp panel to be tested, the indicator lamp is used for displaying whether the voltage is within a specified range, and the relay is connected with the lamp panel to be tested.

Description

Technical Field

[0001] The utility model relates to a testing device for LED lighting inspection. Background Art

[0002] LED testing is a very important part of the PCBA manufacturing process for automotive lights. During the manufacturing process, ICT equipment is usually used to test the LED function. However, the development of ICT equipment often requires a long development cycle. PCBA products produced during this period still need to perform functional testing on the LED. In the prior art, plug-in connectors are generally used to power the LED circuit, and the current and voltage parameters in the DC power supply are manually observed to judge the quality of the product. However, manual testing usually results in misjudgments and missed discs, and only one piece to be tested can be judged at a time, resulting in low detection efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a testing device for LED lighting inspection.

[0004] A test device for LED lighting inspection comprises a DC power supply, a single chip microcomputer, multiple relays, multiple lamp boards to be tested, and an indicator light. The DC power supply comprises a constant current output end and a constant voltage output end. The constant current output end is used to supply power to the relay, and the constant voltage output end is used to supply power to the single chip microcomputer. The single chip microcomputer is connected to the relay, and the single chip microcomputer is used to control the on and off of the relay, and collect and judge the voltage value of the lamp board to be tested. The indicator light is used to display whether the voltage is within a specified range. The relay is connected to the lamp board to be tested.

[0005] Working principle: 8pcs of connecting boards are used, and the whole is placed in the LED lighting test fixture. The constant current source of the DC power supply is connected to multiple relays. The relays receive the current input of the product to be tested respectively. The voltage source of the DC power supply is connected to the control board of the lighting fixture to power the single-chip microcomputer. The single-chip microcomputer controls the opening and closing of the relays in turn, and collects the voltage value of the light board to be tested to determine whether the voltage is within the specified range. If the voltage is within the range, the green indicator light is on, and if it is not within the voltage range, the red indicator light is on.

[0006] In order to ensure that the relay can work normally, the relay includes a relay body, the relay body includes a base, a switching reed installed on the base, a first reed, a second reed, an adsorption structure for adsorbing the switching reed and the second reed, and an assisting structure for adsorbing the switching reed and the first reed, the switching reed includes a switching sheet, and the switching sheet is arranged in an arc shape; the switching reed also includes a mounting sheet, and the mounting sheet is rotatably connected to the switching sheet;

[0007] In order to function as a resistance structure, the assisting structure is configured as a scroll spring, a rotating shaft is fixedly passed through the mounting plate, the switching plate is rotatably connected to the rotating shaft, the assisting structure is sleeved on the rotating shaft, and the two ends of the assisting structure are respectively fixedly connected to the rotating shaft and the switching plate.

[0008] In order to ensure that the single-chip microcomputer can collect voltage information, the single-chip microcomputer includes a central processing unit, memory, timer, interrupt, and IO interface. The central processing unit includes an arithmetic unit and a controller. The memory is used to store variables in the program, the interrupt is used to stop the current work, and the IO interface is used to exchange data with the external.

[0009] In order to ensure that the DC power supply can stably provide constant current and constant voltage, the DC power supply includes a printed circuit board, a plastic shell, and an electromagnetic shielding structure. The electromagnetic shielding structure covers the printed circuit board and is electrically connected to the grounding point of the printed circuit board. The plastic shell covers the electromagnetic shielding structure.

[0010] Beneficial effect: Compared with the prior art, the utility model adopts an 8-pcs connecting board method, and the whole is placed in an LED lighting test fixture. The constant current source of the DC power supply is connected to multiple relays, and the relays receive the current input of the product to be tested respectively. The voltage source of the DC power supply is connected to the control board of the lighting fixture to power the single-chip microcomputer. The single-chip microcomputer controls the opening and closing of the 8 relays in turn, and collects the voltage value of the light board to be tested to determine whether the voltage is within the specified range. If the voltage is within the range, the green indicator light is on, and if it is not within the voltage range, the red indicator light is on.

[0011] The utility model can automatically detect, reduce the occurrence of misjudgment and missed judgment, and improve work efficiency. The test device is simple in design and can be manufactured in a short period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a test device for LED lighting inspection; DETAILED DESCRIPTION

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] like Figure 1 As shown, a test device for LED lighting inspection includes a DC power supply, a single-chip microcomputer, 8 relays and 8 lamp boards to be tested, and an indicator light. The DC power supply includes a constant current output end and a constant voltage output end. The constant current output end is used to power the relay, and the constant voltage output end is used to power the single-chip microcomputer. The single-chip microcomputer is connected to the relay, and the single-chip microcomputer is used to control the on and off of the relay and collect the voltage value of the lamp board to be tested. The indicator light is used to judge whether the voltage is within a specified range. The relay is connected to the lamp board to be tested.

[0015] Specifically, U1 is a single-chip microcomputer, and the constant voltage source of the DC power supply is connected to the 5th and 12th pins of the single-chip microcomputer to power the single-chip microcomputer. R1, R2, R4, R5, R6, R7, R9, and R10 are 8 relays, and the constant current source of the DC power supply is connected to the output of the relay. The IO1, IO2, IO3, IO4, IO5, IO6, IO7, and IO8 of the single-chip microcomputer respectively control the control ends of the 8 relays, and turn on the output switches of the 8 relays in turn. LED2-LED9 is the light board to be tested. IO12 detects the voltage drop on the LED. Within the specified range, the single-chip microcomputer IO10 outputs a high level to control the indicator light U2 to light up green. If it is not within the range, the single-chip microcomputer IO9 outputs a high level to control the indicator light U2 to light up red.

[0016] Adopt 8pcs connecting board mode, put the whole into LED lighting test fixture, the constant current source of DC power supply is connected to 8 relays, the relays receive the current input of the tested product respectively, the voltage source of DC power supply is connected to the control board of lighting fixture, supplies power to the single chip microcomputer, the single chip microcomputer controls the opening and closing of 8 relays in turn, and collects the voltage value of the lamp board to be tested, and judges whether the voltage is within the specified range. If it is within the voltage range, the green indicator light is on, and if it is not within the voltage range, the red indicator light is on.

[0017] In this embodiment, the relay includes a relay body, the relay body includes a base, a switching reed installed on the base, a first reed, a second reed, an adsorption structure for adsorbing the switching reed and the second reed, and an assisting structure for adsorbing the switching reed and the first reed, the switching reed includes a switching piece, and the switching piece is arranged in an arc shape; the switching reed also includes a mounting piece, the mounting piece is rotatably connected to the switching piece, the assisting structure is arranged as a scroll spring, a rotating shaft is fixedly penetrated on the mounting piece, the switching piece is rotatably connected to the rotating shaft, the assisting structure is sleeved on the rotating shaft, and the two ends of the assisting structure are respectively fixedly connected to the rotating shaft and the switching piece.

[0018] In this embodiment, the single chip microcomputer includes a central processing unit, a memory, a timer, an interrupt, and an IO interface. The central processing unit includes an arithmetic unit and a controller. The memory is used to store variables in the program, the interrupt is used to stop the current work, and the IO interface is used to exchange data with the external.

[0019] In this embodiment, the DC power supply includes a printed circuit board, a plastic shell, and an electromagnetic shielding structure. The electromagnetic shielding structure covers the printed circuit board and is electrically connected to the ground point of the printed circuit board. The plastic shell covers the electromagnetic shielding structure.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test device for LED lighting inspection, characterized in that: It includes a DC power supply, a single-chip microcomputer, multiple relays and multiple lamp boards to be tested, and an indicator light. The DC power supply includes a constant current output end and a constant voltage output end. The constant current output end is used to power the relay, and the constant voltage output end is used to power the single-chip microcomputer. The single-chip microcomputer is connected to the relay, and the single-chip microcomputer is used to control the on and off of the relay, and collect and judge the voltage value of the lamp board to be tested. The indicator light is used to display whether the voltage is within a specified range. The relay is connected to the lamp board to be tested.

2. A test device for LED lighting inspection according to claim 1, characterized in that: The relay includes a relay body, which includes a base, a switching reed installed on the base, a first reed, a second reed, an adsorption structure for adsorbing the switching reed and the second reed, and an assisting structure for adsorbing the switching reed and the first reed. The switching reed includes a switching piece, which is arranged in an arc shape; the switching reed also includes a mounting piece, which is rotatably connected to the switching piece.

3. A test device for LED lighting inspection according to claim 2, characterized in that: The assisting structure is configured as a scroll spring, a rotating shaft is fixedly passed through the mounting plate, the switching plate is rotatably connected to the rotating shaft, the assisting structure is sleeved on the rotating shaft, and two ends of the assisting structure are respectively fixedly connected to the rotating shaft and the switching plate.

4. A test device for LED lighting inspection according to claim 1, characterized in that: The single chip microcomputer includes a central processing unit, a memory, a timer, an interrupt, and an IO interface. The central processing unit includes an arithmetic unit and a controller. The memory is used to store variables in the program. The interrupt is used to stop the current work. The IO interface is used to exchange data with an external device.

5. A test device for LED lighting inspection according to claim 1, characterized in that: The DC power supply comprises a printed circuit mainboard, a plastic shell and an electromagnetic shielding structure. The electromagnetic shielding structure covers the printed circuit mainboard and is electrically connected to the grounding point of the printed circuit mainboard. The plastic shell covers the electromagnetic shielding structure.

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