An electronic component testing system
By designing an electronic component testing system, the problem of diverse testing of LED power driver chips was solved, automated testing was achieved, and testing efficiency was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HUAQIHUI IND INNOVATION TECHNOLOGY CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-26
AI Technical Summary
Existing technologies cannot effectively meet the diverse testing needs of LED power driver chips, resulting in the need to rebuild the circuit every time the chip type is changed, which wastes time.
Design an electronic component testing system that includes a main control module, a human-machine interaction module, a power supply module, a signal generation module, and an output detection module. Parameters are input through the human-machine interaction module, the main control module controls the power supply and signal generation modules, and the output detection module collects information to achieve automated testing of different chip types.
This technology enables testing of different types of chips without the need to rebuild the circuit; testing can be performed simply by inputting test parameters, thus improving testing efficiency.
Smart Images
Figure CN224287066U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic component industrial testing, and more specifically, to an electronic component testing system. Background Technology
[0002] LED power driver chips are common electronic components used in lighting. They can provide corresponding voltage and current to LED lamps according to given control signals, realizing the control of lighting switching and dimming. They have a wide range of applications. Pre-testing and inspecting LED power driver chips can effectively ensure their qualified use. Due to the different types of chips, the required power supply and control signals are different. For example, their dimming control signals have various forms such as square wave, 0-10V voltage, and 4-20mA current. A single test circuit cannot meet the diverse needs, and rebuilding the circuit every time different types of components are tested will waste time. Utility Model Content
[0003] The problem this invention addresses is how to provide an electronic component testing system that can meet the testing needs of various types of electronic chips.
[0004] To address the aforementioned problems, this utility model provides an electronic component testing system, comprising: a main control module, a human-machine interface module, a power supply module, a signal generation module, and an output detection module. The human-machine interface module is connected to the main control module. The controlled terminal of the power supply module is connected to the main control module to output a corresponding input voltage to the device under test (DUT) based on the signal from the main control module. The controlled terminal of the signal generation module is connected to the main control module to output a corresponding control signal to the DUT based on the signal from the main control module. The output detection module is connected to the main control module to transmit the detected DUT voltage output information to the main control module.
[0005] Furthermore, the human-computer interaction module includes buttons and a display screen connected to the main control module.
[0006] Furthermore, the signal generation module includes a PWM square wave signal port, a voltage control signal circuit, and a current control signal circuit, which are respectively connected to the output terminal of the main control module. The PWM square wave signal port is used to provide a PWM square wave signal to the device under test. The voltage control signal circuit is used to provide a 0-10V voltage regulation signal to the device under test. The current control signal circuit is used to provide a 4-20mA current regulation signal to the device under test.
[0007] Furthermore, the voltage control signal circuit includes a voltage analog signal converter and a voltage control signal port. The input terminal of the voltage analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the voltage control signal port.
[0008] Furthermore, the current control signal circuit includes a current analog signal converter and a current control signal port. The input terminal of the current analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the current control signal port.
[0009] Furthermore, the power supply module includes a pre-stage protection rectifier circuit and a voltage regulating output circuit connected in sequence.
[0010] Furthermore, the voltage regulation output circuit includes a first driver, a first MOSFET, a first transformer, and a subsequent rectifier and filter circuit. The first terminal of the input side of the first transformer is connected to the pre-stage protection rectifier circuit. The controlled terminal of the first driver is connected to the main control module, and its output terminal is connected to the gate of the first MOSFET. The drain of the first MOSFET is grounded, and its source is connected to the second terminal of the input side of the first transformer. The output terminal of the first transformer is connected to the subsequent rectifier and filter circuit.
[0011] Furthermore, the output detection module includes a device under test (DUT) output port, an adjustable load circuit, a voltage detection circuit, and a current detection circuit. The adjustable load circuit is connected to the DUT output port to provide an output test load. The sampling terminal of the voltage detection circuit is connected to the DUT output port, and its output terminal is connected to the main control module. The sampling terminal of the current detection circuit is connected to the adjustable load circuit, and its output terminal is connected to the main control module.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] When testing different types of chips, according to the testing requirements, the staff inputs the test parameters through the human-machine interface module. The main control module sends control signals to the power supply module and the signal generation module respectively, thereby providing the required power supply voltage and the corresponding type of drive signal to the device under test. The output detection module collects the output information of the device under test and transmits it to the main control module, which displays it through the human-machine interface module. This allows for testing different types of components without having to rebuild the circuit; simply inputting the test parameters through the human-machine interface module is sufficient. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall principle structure of an embodiment of the present utility model;
[0015] Figure 2 This is a schematic diagram of the principle structure of the signal generation module in an embodiment of this utility model;
[0016] Figure 3 This is a schematic diagram of the principle structure of the power supply module in an embodiment of this utility model;
[0017] Figure 4 This is a schematic diagram of the principle structure of the output detection module in an embodiment of this utility model. Detailed Implementation
[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.
[0021] like Figure 1 As shown, this utility model provides an electronic component testing system, including: a main control module, a human-machine interaction module, a power supply module, a signal generation module, and an output detection module. The human-machine interaction module is connected to the main control module. The controlled end of the power supply module is connected to the main control module to output a corresponding input voltage to the device under test according to the signal from the main control module. The controlled end of the signal generation module is connected to the main control module to output a corresponding control signal to the device under test according to the signal from the main control module. The output detection module is connected to the main control module to transmit the detected voltage output information of the device under test to the main control module.
[0022] It should be noted that when testing different types of chips, according to the testing requirements, the staff inputs the test parameters through the human-machine interface module. The main control module sends control signals to the power supply module and the signal generation module respectively, thereby providing the required power supply voltage and the corresponding type of drive signal to the device under test. The output detection module collects the output information of the device under test and transmits it to the main control module, which displays it through the human-machine interface module. This means that when testing different types of components, it is not necessary to rebuild the circuit; only the test parameters need to be input through the human-machine interface module.
[0023] In one embodiment of this utility model, the human-computer interaction module includes buttons and a display screen connected to the main control module.
[0024] It should be noted that the buttons are used to input the test parameters of the device under test, and the display screen is used to display the data of the device under test.
[0025] In one embodiment of this utility model, the signal generation module includes a PWM square wave signal port, a voltage control signal circuit, and a current control signal circuit, which are respectively connected to the output terminal of the main control module. The PWM square wave signal port is used to provide a PWM square wave signal to the device under test. The voltage control signal circuit is used to provide a 0-10V voltage regulation signal to the device under test. The current control signal circuit is used to provide a 4-20mA current regulation signal to the device under test.
[0026] It should be noted that, as Figure 2 As shown, the signal generation module can provide different dimming control signals required by the LED power driver chip under test, including PWM square wave, 0-10V voltage, and 4-20mA current. The appropriate signal is selected as needed. During testing, the corresponding signal port is connected to the control signal terminal of the device under test.
[0027] In one embodiment of this utility model, the voltage control signal circuit includes a voltage analog signal converter and a voltage control signal port. The input terminal of the voltage analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the voltage control signal port.
[0028] It should be noted that the voltage analog signal converter can convert the PWM signal output by the main control module into a corresponding 0-10V voltage signal, which is output from the voltage control signal port. There are various models of voltage analog signal converters, such as DIN11-IFB-F3-P1.
[0029] In one embodiment of this utility model, the current control signal circuit includes a current analog signal converter and a current control signal port. The input terminal of the current analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the current control signal port.
[0030] It should be noted that the current analog signal converter can convert the PWM signal output by the main control module into a corresponding 4-20mA current signal, which is output from the current control signal port. There are various models of current analog signal converters, such as GP8301.
[0031] In one embodiment of this utility model, the power supply module includes a pre-stage protection rectifier circuit and a voltage regulating output circuit connected in sequence.
[0032] It should be noted that, as Figure 3 As shown, the pre-stage protection rectifier circuit includes fuse F1 and full-bridge rectifier VB1, which can convert AC power into DC power. The voltage regulation output circuit can adjust the output voltage of the power supply module under the control of the main control module.
[0033] In one embodiment of this utility model, the voltage regulating output circuit includes a first driver, a first MOSFET, a first transformer, and a subsequent rectifier and filter circuit. The first terminal of the input side of the first transformer is connected to the pre-stage protection rectifier circuit. The controlled terminal of the first driver is connected to the main control module, and the output terminal is connected to the gate of the first MOSFET. The drain of the first MOSFET is grounded, and the source is connected to the second terminal of the input side of the first transformer. The output terminal of the first transformer is connected to the subsequent rectifier and filter circuit.
[0034] It should be noted that, as Figure 3 As shown, the first transformer T1 is powered on by the first MOSFET Q1, which in turn generates a corresponding voltage on the secondary side. This voltage is rectified by diodes D2-D4 in the subsequent rectifier and filter circuit and output to power the input power terminal of the device under test. Changing the conduction angle of the first MOSFET Q1 can change the output voltage. The main control module receives parameters from the human-machine interface module and sends corresponding control signals according to the voltage requirements of the device under test. The first driver U1 controls the on and off of the first MOSFET Q1 according to the control signals of the main control module, thereby generating the required voltage.
[0035] In one embodiment of this utility model, the output detection module includes a device under test (DUT) output port, an adjustable load circuit, a voltage detection circuit, and a current detection circuit. The adjustable load circuit is connected to the DUT output port to provide an output test load. The sampling terminal of the voltage detection circuit is connected to the DUT output port, and its output terminal is connected to the main control module. The sampling terminal of the current detection circuit is connected to the adjustable load circuit, and its output terminal is connected to the main control module.
[0036] It should be noted that during testing, the power output of the device under test (DUT) is connected to the DUT's output port, such as... Figure 4As shown, the adjustable load circuit includes an adjustable resistor R15, through which the corresponding load resistance value is set. The current detection circuit includes a current transformer T2 installed in the load circuit, which collects the load circuit current information and transmits it to the main control module. The voltage detection circuit collects the voltage signal through the voltage divider resistor, and after being compared and amplified by the operational amplifier U10, it is transmitted to the main control module to obtain the output voltage of the device under test. The display screen receives the detection information obtained by the main control module and displays it.
[0037] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.
Claims
1. An electronic component testing system, characterized in that, include: The device comprises a main control module, a human-machine interface module, a power supply module, a signal generation module, and an output detection module. The human-machine interface module is connected to the main control module. The controlled end of the power supply module is connected to the main control module to output a corresponding input voltage to the device under test based on the signal from the main control module. The controlled end of the signal generation module is connected to the main control module to output a corresponding control signal to the device under test based on the signal from the main control module. The output detection module is connected to the main control module to transmit the detected voltage output information of the device under test to the main control module.
2. The electronic component testing system according to claim 1, characterized in that, The human-computer interaction module includes buttons and a display screen connected to the main control module.
3. The electronic component testing system according to claim 1, characterized in that, The signal generation module includes a PWM square wave signal port, a voltage control signal circuit, and a current control signal circuit, which are respectively connected to the output terminal of the main control module. The PWM square wave signal port is used to provide a PWM square wave signal to the device under test. The voltage control signal circuit is used to provide a 0-10V voltage regulation signal to the device under test. The current control signal circuit is used to provide a 4-20mA current regulation signal to the device under test.
4. The electronic component testing system according to claim 3, characterized in that, The voltage control signal circuit includes a voltage analog signal converter and a voltage control signal port. The input terminal of the voltage analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the voltage control signal port.
5. The electronic component testing system according to claim 4, characterized in that, The current control signal circuit includes a current analog signal converter and a current control signal port. The input terminal of the current analog signal converter is connected to the PWM output port of the main control module, and the output terminal is connected to the current control signal port.
6. The electronic component testing system according to claim 5, characterized in that, The power supply module includes a front-end protection rectifier circuit and a voltage-regulating output circuit connected in sequence.
7. The electronic component testing system according to claim 6, characterized in that, The voltage regulation output circuit includes a first driver, a first MOSFET, a first transformer, and a subsequent rectifier and filter circuit. The first terminal of the input side of the first transformer is connected to the pre-stage protection rectifier circuit. The controlled terminal of the first driver is connected to the main control module, and the output terminal is connected to the gate of the first MOSFET. The drain of the first MOSFET is grounded, and the source is connected to the second terminal of the input side of the first transformer. The output terminal of the first transformer is connected to the subsequent rectifier and filter circuit.
8. The electronic component testing system according to claim 1, characterized in that, The output detection module includes a device under test (DUT) output port, an adjustable load circuit, a voltage detection circuit, and a current detection circuit. The adjustable load circuit is connected to the DUT output port to provide an output test load. The sampling terminal of the voltage detection circuit is connected to the DUT output port, and its output terminal is connected to the main control module. The sampling terminal of the current detection circuit is connected to the adjustable load circuit, and its output terminal is connected to the main control module.