Multifunctional test box capable of automatically detecting charging and discharging capability of PCBA (Printed Circuit Board Assembly)

Abstract

The utility model relates to the field of PCBA testing, and discloses a multifunctional test box capable of automatically detecting PCBA charging and discharging capacity. The multifunctional test box comprises a voltage stabilizing circuit, an external power supply voltage measuring circuit, a charger interface circuit, a charging current detection circuit, a discharging current detection circuit, a key control circuit, an indicating lamp control circuit and a buzzer driving circuit. Cooperative work of all the modules is achieved through the single-chip microcomputer control system, and remarkable beneficial effects are achieved. Firstly, the test process of the power supply type PCBA is greatly simplified, automatic charge and discharge detection is realized, the test efficiency is remarkably improved, and the time and errors of manual operation are reduced. And secondly, through accurate voltage and current monitoring, the accuracy and reliability of testing are ensured, and PCBA damage caused by improper testing is effectively avoided. In addition, the testing quality and the user experience are improved, and an efficient and reliable solution is provided for rapid and accurate testing of the power supply PCBA.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of PCBA testing, and particularly relates to a multifunctional test box with automatic detection of PCBA charging and discharging capacity. BACKGROUND

[0002] Power supply product PCBA testing is a key link to ensure the reliability and safety of power supply products, which includes a series of strict testing processes and methods, mainly involving electrical performance testing, function testing and other aspects. Electrical performance testing includes measurement of parameters such as voltage, current, power, efficiency and power factor, as well as detection of safety indicators such as line insulation resistance and leakage current, to ensure stable output of power supply products under actual working conditions. Function testing is to verify each functional module on the PCBA, such as power-on function, protection function (overvoltage, overcurrent, short circuit protection, etc.), output voltage regulation function, etc., to ensure that each function is normal and meets the design requirements. The current PCBA testing of power supply products is generally through the observation of charging current by inserting a charging line and the testing of load capacity by using a load instrument

[0003] However, the common testing method can only test a single board, the testing is very complex and the efficiency is very low, and if an automatic testing fixture is used, the cost will be high. CONTENT OF THE INVENTION

[0004] The application aims to solve the above problems and provide a multifunctional test box with automatic detection of PCBA charging and discharging capacity.

[0005] The technical solution adopted by the application is as follows: a multifunctional test box with automatic detection of PCBA charging and discharging capacity, which comprises a voltage stabilizing circuit, an external power supply voltage measuring circuit, a charger interface circuit, a charging current detection circuit, a discharging current detection circuit, a key control circuit, an indicator light control circuit and a buzzer driving circuit.

[0006] The voltage stabilizing circuit is a self-adaptive voltage stabilizing circuit, which comprises a self-adaptive voltage stabilizer, a voltage monitoring unit, a control unit and a communication interface. The self-adaptive voltage stabilizer adopts a programmable voltage stabilizer or a voltage stabilizing module based on a DC-DC converter, which can adjust the output voltage according to the input signal. The voltage monitoring unit monitors the output voltage and load current in real time and feeds back the data to the control unit. The control unit is based on MCU or DSP and adjusts the output parameters of the voltage stabilizer according to the data of the voltage monitoring unit and the preset algorithm. The communication interface allows communication with the host computer or other modules, receives instructions or sends status information.

[0007] The single-chip microcomputer control system is electrically connected with a voltage stabilizing circuit, an external power supply voltage measuring circuit, a charging current detecting circuit, a discharging current detecting circuit, a key control circuit, an indicator light control circuit and a buzzer driving circuit.

[0008] The single-chip microcomputer control system exchanges information with an external PCB A test rack through a DB9 interface circuit.

[0009] The voltage stabilizing circuit is used to provide stable power output for the whole system.

[0010] The external power supply voltage measuring circuit is used to monitor the voltage value of the external power supply in real time, and the charging current detecting circuit and the discharging current detecting circuit are respectively used to monitor the charging and discharging performance of the PCBA.

[0011] The key control circuit is used to receive the instructions input by the user, the indicator light control circuit is used to present the test results in a visual form, and the buzzer driving circuit is used to issue sound prompts.

[0012] By adopting the above technical solution, the working process of the adaptive voltage stabilizing circuit includes:

[0013] The voltage monitoring unit collects output voltage and load current data in real time.

[0014] The control unit determines the current load demand and power supply state according to the collected data and analysis algorithms.

[0015] The control unit adjusts the output parameters of the adaptive voltage stabilizer, such as output voltage and current limit, to optimize power efficiency and ensure stable power supply.

[0016] The communication interface can be used to receive external instructions, such as setting a specific voltage value, or send current voltage stabilizing state information.

[0017] In a preferred embodiment, the voltage stabilizing control circuit reduces and stabilizes the voltage supplied to the test box and performs filtering processing, thereby providing stable power supply for other control circuits of the test box.

[0018] In a preferred embodiment, the external power supply voltage measuring circuit measures whether the external power supply voltage value is within the required range. If the power supply voltage is higher or lower than the required voltage, the system will sound and light alarm through the indicator light control circuit and the buzzer driving circuit to prompt the user that the power supply does not meet the requirements. The voltage value is provided for voltage calibration of the test box.

[0019] In a preferred embodiment, the charger interface circuit connects an external charger to the test box to provide charging current for the power board PCBA.

[0020] In a preferred embodiment, the indicator light control circuit is used to indicate the measurement results of the PCBA and the bad type of the PCBA.

[0021] In a preferred embodiment, the buzzer driving circuit generates various state prompt sounds in the PCBA test process.

[0022] In a preferred embodiment, the charging current detection circuit detects the charging current of the PCBA, and then compares it with the set value to be detected, and displays it through the LED indicator light and the buzzer prompt sound.

[0023] In a preferred embodiment, the discharging current detection circuit detects the load capacity of the PCBA USB port, and can detect the output voltage of the USB port load condition, and then compares it with the set value to be detected, and displays it through the LED indicator light and the buzzer prompt sound.

[0024] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present application are:

[0025] 1. In the present application, by integrating the voltage stabilizing circuit, the external power supply voltage measurement circuit, the charging current detection circuit, the discharging current detection circuit, the key control circuit, the indicator light control circuit and the buzzer driving circuit, and using the single-chip microcomputer control system to realize the cooperative work of each module, significant beneficial effects are brought. First of all, it greatly simplifies the test process of power supply type PCBA, realizes automatic charging and discharging detection, significantly improves the test efficiency, and reduces the time and error of manual operation. Secondly, through accurate voltage and current monitoring, the accuracy and reliability of the test are guaranteed, and the damage of PCBA caused by improper test is effectively avoided. In addition, the use of the key control circuit and the indicator light control circuit provides an intuitive user interface, making the operation more simple and easy to understand. The addition of the buzzer driving circuit provides a sound prompt function, enhancing the user's experience. Therefore, the test box not only reduces the test cost, but also improves the test quality and user experience, providing an efficient and reliable solution for the rapid and accurate test of power supply type PCBA.

[0026] 2.In this application, the voltage stabilizing circuit is an adaptive voltage stabilizing circuit, which brings significant benefits to the entire system. First, it ensures that a stable and demand-compliant voltage output can be provided during the charging and discharging test process, effectively avoiding the influence of voltage fluctuations on the accuracy of test results, thereby improving the reliability and consistency of the test. Second, the flexibility of the adaptive voltage stabilizing circuit allows it to adapt to the voltage requirements of different types of PCBA, enhancing the device compatibility and application range of the test box, so that the same test box can handle multiple test scenarios. In addition, the fast response characteristics of the circuit reduce the time for voltage adjustment, improving test efficiency, while its stable voltage output also helps to protect the PCBA from damage caused by voltage fluctuations, extending the service life of the PCBA. In terms of energy utilization, the adaptive voltage stabilizing circuit reduces energy waste by efficiently adjusting the voltage, meeting the requirements of energy conservation and environmental protection. Its stable performance also simplifies the operation process, reduces the risk of operation errors, and supports remote monitoring and voltage adjustment through communication with the upper computer or other modules, providing convenience for automated testing and remote maintenance. In summary, the integration of the adaptive voltage stabilizing circuit not only improves the technical performance of the multifunctional test box, but also optimizes the user experience, providing an efficient, stable and intelligent solution for the automatic detection of PCBA. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is the overall architecture diagram of the present application;

[0028] Fig. 2 is the architecture diagram of the voltage stabilizing circuit in the present application. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] EMBODIMENT:

[0031] REFERENCE Figs. 1-2 A multifunctional test box with automatic detection of PCBA charging and discharging capability, the multifunctional test box comprising: a voltage stabilizing circuit, an external power supply voltage measurement circuit, a charger interface circuit, a charging current detection circuit, a discharging current detection circuit, a key control circuit, an indicator light control circuit, and a buzzer driving circuit.

[0032] The voltage stabilizing circuit is an adaptive voltage stabilizing circuit, comprising an adaptive voltage stabilizer, a voltage monitoring unit, a control unit and a communication interface; the adaptive voltage stabilizer adopts a programmable voltage stabilizer or a voltage stabilizing module based on a DC-DC converter, and can adjust the output voltage according to the input signal. The voltage monitoring unit monitors the output voltage and load current in real time, and feeds back the data to the control unit. The control unit is based on MCU or DSP, and adjusts the output parameters of the voltage stabilizer according to the data of the voltage monitoring unit and the preset algorithm. The communication interface allows communication with the host computer or other modules, receives instructions or sends state information.

[0033] The working process of the adaptive voltage stabilizing circuit includes:

[0034] The voltage monitoring unit collects output voltage and load current data in real time.

[0035] The control unit judges the current load demand and power supply state according to the collected data and analysis algorithm.

[0036] The control unit adjusts the output parameters of the adaptive voltage stabilizer, such as output voltage, current limit, etc., to optimize power efficiency and ensure stable power supply.

[0037] The communication interface can be used to receive external instructions, such as setting a specific voltage value, or send current voltage stabilizing state information.

[0038] The single-chip microcomputer control system is electrically connected with the voltage stabilizing circuit, the external power supply voltage measurement circuit, the charging current detection circuit, the discharging current detection circuit, the key control circuit, the indicator light control circuit and the buzzer driving circuit.

[0039] The single-chip microcomputer control system exchanges information with the external PCB A test rack through the DB9 interface circuit.

[0040] The single-chip microcomputer control system exchanges information with the external PCB A test rack through the DB9 interface circuit.

[0041] The voltage stabilizing circuit is used to provide stable power output for the whole system.

[0042] The external power supply voltage measurement circuit is used to monitor the voltage value of the external power supply in real time, and the charging current detection circuit and the discharging current detection circuit are used to monitor the charging and discharging performance of the PCBA respectively.

[0043] The key control circuit is used to receive user input instructions, the indicator light control circuit is used to present test results in visual form, and the buzzer driving circuit is used to issue sound prompts.

[0044] Voltage stabilizing control circuit

[0045] The voltage for powering the test box is stepped down and stabilized and filtered to provide a stable power supply for other control circuits of the test box.

[0046] The external power supply voltage measurement circuit measures whether the external power supply voltage value is within the required range. If the power supply voltage is higher or lower than the required voltage, the system will sound and light alarm through the indicator light control circuit and the buzzer driving circuit to prompt the user that the power supply does not meet the requirements. The voltage value is provided for voltage calibration of the test box.

[0047] The charger interface circuit connects the external charger to the test box to provide charging current to the power board PCBA.

[0048] The indicator light control circuit is used to indicate the measurement results of the PCBA and the type of PCBA failure.

[0049] The buzzer driving circuit generates various state prompt sounds during PCBA testing.

[0050] The charging current detection circuit detects the charging current of the PCBA, then compares it with the set value to be detected, and displays it through the LED indicator light and buzzer prompt sound.

[0051] The discharge current detection circuit detects the load capacity of the PCBA USB port and can detect the output voltage of the USB port load condition, then compares it with the set value to be detected, and displays it through the LED indicator light and buzzer prompt sound.

[0052] In this application, through the integration of the voltage stabilizing circuit, the external power supply voltage measurement circuit, the charging current detection circuit, the discharge current detection circuit, the key control circuit, the indicator light control circuit and the buzzer driving circuit, and the use of a single-chip microcomputer control system to realize the cooperative work of each module, it brings significant beneficial effects. First of all, it greatly simplifies the test process of power class PCBA, realizes automatic charging and discharging detection, significantly improves the test efficiency, and reduces the time and error of manual operation. Secondly, through accurate voltage and current monitoring, it ensures the accuracy and reliability of the test, effectively avoids the damage of PCBA caused by improper test. In addition, the use of key control circuit and indicator light control circuit provides an intuitive user interface, making the operation more simple and easy to understand. The addition of the buzzer driving circuit provides a sound prompt function, enhancing the user's experience. Therefore, this test box not only reduces the test cost, but also improves the test quality and user experience, providing an efficient and reliable solution for fast and accurate testing of power class PCBA.

[0053] In this application, the voltage stabilizing circuit is an adaptive voltage stabilizing circuit, which brings significant benefits to the entire system. First, it ensures that a stable and demand-compliant voltage output can be provided during the charging and discharging test process, effectively avoiding the influence of voltage fluctuations on the accuracy of test results, thereby improving the reliability and consistency of the test. Secondly, the flexibility of the adaptive voltage stabilizing circuit enables it to adapt to the voltage requirements of different types of PCBA, enhancing the device compatibility and application range of the test box, so that the same test box can cope with multiple test scenarios. In addition, the fast response characteristics of the circuit reduce the time of voltage adjustment, improving the test efficiency, and its stable voltage output also helps to protect the PCBA from damage caused by voltage fluctuations, prolonging the service life of the PCBA. In terms of energy utilization, the adaptive voltage stabilizing circuit reduces energy waste by efficiently adjusting the voltage, meeting the requirements of energy saving and environmental protection. Its stable performance also simplifies the operation process, reduces the risk of operation errors, and supports remote monitoring and voltage adjustment through communication with the upper computer or other modules, providing convenience for automated testing and remote maintenance. In summary, the integration of the adaptive voltage stabilizing circuit not only improves the technical performance of the multifunctional test box, but also optimizes the user experience, providing an efficient, stable and intelligent solution for the automatic detection of PCBA.

[0054] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multifunctional test box with automatic detection of PCBA charging and discharging capacity, comprising: The single-chip microcomputer control system and the voltage stabilizing control circuit are characterized in that the multifunctional test box comprises a voltage stabilizing circuit, an external power supply voltage measuring circuit, a charger interface circuit, a charging current detecting circuit, a discharging current detecting circuit, a key control circuit, an indicator light control circuit and a buzzer driving circuit. The voltage stabilizing circuit is an adaptive voltage stabilizing circuit, comprising an adaptive voltage stabilizer, a voltage monitoring unit, a control unit and a communication interface; the adaptive voltage stabilizer adopts a programmable voltage stabilizer or a voltage stabilizing module based on a DC-DC converter, and can adjust the output voltage according to the input signal; the voltage monitoring unit monitors the output voltage and the load current in real time, and feeds back the data to the control unit; the control unit is based on MCU or DSP, and adjusts the output parameters of the voltage stabilizer according to the data of the voltage monitoring unit and the preset algorithm; the communication interface allows communication with the upper computer or other modules, receives instructions or sends state information; The single-chip microcomputer control system is electrically connected with the voltage stabilizing circuit, the external power supply voltage measuring circuit, the charging current detecting circuit, the discharging current detecting circuit, the key control circuit, the indicator light control circuit and the buzzer driving circuit. The single-chip microcomputer control system exchanges information with the external PCB A test rack through a DB9 interface circuit; The voltage stabilizing circuit is used for providing stable power output for the whole system; The external power supply voltage measuring circuit is used for monitoring the voltage value of the external power supply in real time, and the charging current detecting circuit and the discharging current detecting circuit are respectively used for monitoring the charging and discharging performance of the PCBA; The key control circuit is used for receiving the instructions input by the user, the indicator light control circuit is used for presenting the test results in a visual form, and the buzzer driving circuit is used for issuing sound prompts.

2. The multifunctional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The voltage stabilizing control circuit reduces and stabilizes the voltage for powering the test box, and performs filtering processing, thereby providing stable power for other control circuits of the test box.

3. The multifunctional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The external power supply voltage measuring circuit measures whether the external power supply voltage value is within the required range; if the power supply voltage is higher or lower than the required voltage, the system will perform sound and light alarm through the indicator light control circuit and the buzzer driving circuit, thereby prompting the user that the power supply does not meet the requirements; the voltage value is provided for voltage calibration of the test box.

4. The multi-functional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The charger interface circuit connects the external charger to the test box, so as to provide charging current for the power board PCBA.

5. The multi-functional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The indicator light control circuit is used for indicating the measurement results of the PCBA and the bad type of the PCBA.

6. The multi-functional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The buzzer driving circuit generates various state prompt sounds in the PCBA test process.

7. The multi-functional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The charging current detecting circuit detects the charging current of the PCBA, and then compares it with the set value to be detected, and displays it through the LED indicator light and the buzzer prompt sound.

8. The multi-functional test box with automatic detection of the charging and discharging capability of the PCBA according to claim 1, characterized in that: The discharging current detecting circuit detects the load capacity of the USB port of the PCBA, and can detect the output voltage of the USB port under load, and then compares it with the set value to be detected, and displays it through the LED indicator light and the buzzer prompt sound.

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