Integrated dc power supply

Abstract

The application discloses an integrated direct-current power supply device, which comprises a power input interface for converting commercial power into direct-current power, a power output interface for providing direct-current power to a circuit board to be tested, a liquid crystal display screen with a size greater than 5 inches arranged on a shell of the integrated direct-current power supply device, the liquid crystal display screen being used for displaying user input, output parameters of the integrated direct-current power supply device and an output power curve, a plurality of physical buttons arranged around the liquid crystal display screen on the shell, and a control unit electrically connected with the power output interface, the liquid crystal display screen and the plurality of physical buttons respectively, wherein the control unit is configured to display user input received by the plurality of physical buttons through the liquid crystal display screen and control a working mode and output parameters of the integrated direct-current power supply device. The application realizes high integration, rich functions and advanced detection functions without relying on an upper computer.

Description

Technical Field

[0001] The present invention relates to the technical field of DC power supplies, and specifically relates to an integrated DC power supply device. Background Art

[0002] In the field of circuit board maintenance and inspection for digital products (such as mobile phones, tablet computers, etc.), DC power supplies, current and voltage meters, thermal imagers and the like are commonly used instruments and meters. Traditional DC power supplies usually adopt nixie tube displays, which provide limited information volume and limited interaction capability, and cannot perform complex data visualization and system control.

[0003] At present, there are generally two modes for performing fault detection on circuit boards: the first mode uses independent devices with single functions. Maintenance personnel need to manually operate the output of the DC power supply, observe the readings of the current and voltage meters at the same time, and may additionally need to operate a thermal imager for temperature measurement. The operation is cumbersome and the efficiency is low.

[0004] The second mode adopts a control system based on a host computer (personal computer). By running software on the host computer, lower computer devices such as the DC power supply, the current and voltage meter are connected and controlled through standard interfaces (such as USB, COM), so as to realize certain linkage control and data visualization. However, this mode relies heavily on the host computer, which makes the entire detection system bulky, non-portable, and increases the user's hardware cost and software configuration complexity.

[0005] Therefore, there is an urgent need in the art for a DC power supply device that is highly integrated, rich in functions and capable of realizing advanced detection functions without relying on a host computer, so as to solve the above problems. Summary of the Invention

[0006] Based on the above current situation, the main objective of the present invention is to provide an integrated DC power supply device, so as to realize high integration, rich functions and capability of realizing advanced detection functions without relying on a host computer.

[0007] To achieve the above objective, the technical solution adopted by the present invention is as follows:

[0008] An integrated DC power supply device, comprising: a power input interface for converting mains electricity into DC power, a power output interface for supplying DC power to a circuit board under test, and further comprising:

[0009] A liquid crystal display screen, which has a size greater than 5 inches and is arranged on the housing of the integrated DC power supply device; the liquid crystal display screen is used for displaying user inputs, output parameters of the integrated DC power supply device and output power curves;

[0010] A plurality of physical keys, arranged on the housing around the liquid crystal display screen;

[0011] The control unit is electrically connected to the power output interface, the LCD screen, and multiple physical buttons. The control unit is configured to display user input received from the multiple physical buttons on the LCD screen and control the operating mode and output parameters of the integrated DC power supply.

[0012] Optionally, it also includes:

[0013] A standard protocol interface is used to connect to the current and voltage meter signal and receive the detection signal from the circuit board under test collected by the current and voltage meter.

[0014] The intensity of the detected signal is displayed on the LCD screen in the form of pointers.

[0015] Optionally, the deflection angle of the pointer is positively correlated with the magnitude of the current in the detected signal.

[0016] Optionally, the control unit visualizes and displays the detected waveform on the LCD screen in a time-series manner based on the signal strength of the detected signal.

[0017] Optionally, the standard protocol interface is also used to connect to a thermal imaging system;

[0018] Multiple physical buttons include: a thermal imaging button;

[0019] In response to the user triggering the thermal imaging button, the control unit sends thermal imaging commands to the thermal imaging system via a standard protocol interface.

[0020] Optionally, it also includes:

[0021] The switching unit has its first and second poles connected between the power output interface and the DC power supply, and its control pole connected to the control unit.

[0022] Multiple physical buttons include: an intermittent power button;

[0023] In response to the user triggering the intermittent power supply button, the control unit outputs an intermittent on / off control signal to the switching unit at a preset frequency, switching back and forth between on and off, so that the power output interface provides DC power to the circuit board under test at a preset frequency, so that the thermal imaging device performs thermal imaging at the on / off frequency.

[0024] Optionally, the standard protocol interface is also used to connect to a host computer to receive parameter configurations issued by the host computer and / or upload signal data of the integrated DC power supply to the host computer.

[0025] Optionally, the multiple physical buttons include buttons for switching function modes and rotary knobs for adjusting parameters;

[0026] The control unit is configured to save the current power settings to a quick memory level in response to a long press of the function mode switch button.

[0027] Optionally, the power output interface includes:

[0028] The banana-head output interface is used to provide DC power to the circuit board under test;

[0029] The USB interface is used to provide standard USB power to external devices.

[0030] Optionally, the banana-shaped output interface and the USB interface are located on the front of the housing;

[0031] The power input interface is located at the rear of the casing.

[0032] Beneficial effects:

[0033] An integrated DC power supply disclosed in an embodiment of the present invention achieves the following significant effects through the coordinated configuration of a larger than 5-inch LCD screen, multiple surrounding physical buttons, and a control unit:

[0034] 1. It achieves high integration and functional fusion, eliminating dependence on host computers.

[0035] By integrating a large display screen and multi-function buttons, the DC power supply of this invention possesses human-computer interaction and data processing capabilities. Users can perform complex parameter settings and mode switching directly on the device, and view output parameters and power curves in real time and intuitively, without relying on an external host computer or software. This improves the device's portability and ease of use, reduces the user's overall cost of ownership and operational complexity, making it a truly independent intelligent device.

[0036] 2. Provides rich and intuitive human-computer interaction and information display capabilities.

[0037] A larger than 5-inch LCD screen replaces the traditional digital tube or small screen of the power supply, providing sufficient resolution and display area. This allows multiple information such as voltage, current, power, and waveform curves to be presented to the user simultaneously, clearly, and intuitively, enriching the amount of visual information and facilitating the user's comprehensive understanding of the power supply's operating status and the response of the circuit board under test. Multiple physical buttons arranged around the screen provide a direct, efficient, and reliable control method, which, combined with the on-screen menu, improves operational efficiency and user experience.

[0038] 3. Reduced the area occupied by the control panel and improved ease of operation.

[0039] Compared to traditional host computer control methods, this invention integrates functions, allowing users to power the circuit board under test and display data simply by carrying a DC power supply. This not only reduces the space occupied by the control panel but also eliminates the need for connecting to a host computer or carrying a host computer device, thereby improving the convenience of user operation.

[0040] Other beneficial effects of the present invention will be explained in detail through the introduction of specific technical features and technical solutions in specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by these technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0041] The embodiments of the present invention will now be described with reference to the accompanying drawings. In the drawings:

[0042] Figure 1 This is a schematic diagram of the front structure of an integrated DC power supply disclosed in this embodiment;

[0043] Figure 2 This is a schematic diagram of the back structure of an integrated DC power supply disclosed in this embodiment;

[0044] Figure 3 This is a schematic diagram of a GUI displayed on a liquid crystal display screen disclosed in this embodiment. Detailed Implementation

[0045] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0046] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0047] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0048] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] To achieve a highly integrated, feature-rich DC power supply device that can perform advanced detection functions without relying on a host computer, this embodiment discloses an integrated DC power supply. Please refer to [reference needed]. Figure 1 and Figure 2 , Figure 1 This is a front view diagram of an integrated DC power supply disclosed in this embodiment. Figure 2 This is a schematic diagram of the back structure of an integrated DC power supply disclosed in this embodiment. The DC power supply includes: a power input interface 1 for converting AC power to DC power, a power output interface 2 for providing DC power to the circuit board under test, an LCD screen 3, multiple physical buttons 4, and a control unit (not shown), as detailed below:

[0050] The integrated DC power supply includes a housing 10. A power input interface 1 is provided on the housing 10 for connecting to mains power. A power output interface 2 is provided on the front of the housing 10. In this embodiment, the power output interface 2 includes a conventional banana-head output interface 21 for connecting test cables, and a USB interface 22 for providing standard 5V power to external devices, enhancing the device's versatility.

[0051] The core improvement of this invention lies in the integration of a liquid crystal display screen 3 (e.g., a 7-inch TFT LCD screen) larger than 5 inches on the front panel of the housing 10. This display screen 3 is the main information output interface, used to display user input, output parameters of the integrated DC power supply, and output power curves.

[0052] Please refer to Figure 1 Multiple physical buttons 4 (including but not limited to tactile switches, encoder knobs, etc.) are arranged around the LCD screen 3 on the housing 10, forming an interactive area centered on the screen.

[0053] The control unit (not shown in the figure) is electrically connected to the power output interface 2, the LCD screen 3, and multiple physical buttons 4. The control unit is configured to display the user input received from the multiple physical buttons 4 via the LCD screen 3, and to control the operating mode and output parameters of the integrated DC power supply. In practice, the control unit is located inside the DC power supply and can be an MCU microcontroller unit or a DSP, etc.

[0054] In practice, users input commands by operating physical button 4 (such as pressing the mode button or rotating the encoder knob), for example, setting the output voltage to 5.0V and the current limit to 1.0A. The control unit receives these input signals in real time and performs two main operations:

[0055] First, the control unit drives the power output circuit so that the power output interface 2 outputs precise DC power according to the set parameters;

[0056] Secondly, the control unit simultaneously generates a graphical user interface (GUI) from the user's settings, the actual output voltage and current values ​​of the power supply, and drives the LCD screen 3 to display these values ​​in real time. For example... Figure 3 Indication, Figure 3 This is a schematic diagram of a GUI displayed on a liquid crystal display screen disclosed in this embodiment. The top of the screen can display the set voltage / current value and the real-time output voltage / current value; the middle can display the current signal collected by the circuit board under test, which can be in the form of a value or a pointer; the bottom can draw the curves of the voltage and current of the output power supply changing over time, i.e., the output power supply curve, so that the user can intuitively observe the surge current at the moment the circuit board under test is powered on or the current fluctuation during operation.

[0057] This results in intelligent DC power supply devices with rich interactive and visualization capabilities. All user operations and monitoring can be completed on a single device without the need for an external PC, thus improving ease of use and efficiency.

[0058] To facilitate intuitive observation of the current on the circuit board under test by the user, in an optional embodiment, the integrated DC power supply further includes:

[0059] Standard protocol interface 5 is used to connect to the ammeter and voltmeter and receive the detection signal from the circuit board under test collected by the ammeter and voltmeter. The intensity of the detection signal is displayed on the LCD screen 3 in the form of a pointer. Specifically, standard protocol interface 5 can be a USB interface, a serial port, or a signal transmission interface matched with the ammeter and voltmeter, and is located on the back or side of the housing 10. In this embodiment, standard protocol interface 5 establishes a signal connection with the external ammeter and voltmeter.

[0060] During the testing process, the ammeter and voltmeter collect the actual current signal of the circuit board under test and transmit the test signal (usually digital current value data) to the control unit of the DC power supply in real time through the standard protocol interface 5.

[0061] After receiving the data, the control unit drives the LCD screen 3 to display it in a more intuitive way. In addition to displaying numerical values, the control unit also draws a simulated analog dial on a specific area of ​​the screen (e.g., the center of the screen), such as... Figure 3 The diagram illustrates a virtual pointer-style dial with a range of 300mA, generating a pointer that dynamically deflects according to the strength of the detected signal (i.e., the magnitude of the current). The pointer's deflection angle is positively correlated with the current magnitude; that is, the greater the current, the greater the pointer deflection angle. This replicates the visual experience and reading habits of traditional pointer-style instruments. This display method allows users to quickly observe the current trend and approximate range.

[0062] To facilitate in-depth analysis of the circuit board status by the user, in an optional embodiment, the control unit draws and displays the detection waveforms in a visual manner in time sequence on the liquid crystal display screen 3 based on the signal strength of the detection signals. Specifically, the control unit continuously receives and caches the detection signals from the current and voltage meter, processes these signals in time sequence, and the specific processing manner may refer to the signal processing manners in the prior art. Subsequently, the control unit draws the detection waveforms in a visual manner in another area of the liquid crystal display screen 3 (for example, the lower part of the screen). As shown in Figure 3 schematically, the horizontal axis represents time, and the vertical axis represents the signal strength of current or voltage, thereby forming a real-time changing curve. This waveform can accurately record and display the state changes of the circuit board under test during the entire process of power-on, operation, hibernation, etc., such as the inrush current (surge) at the moment of power-on, the current during stable operation, and the current drop during short circuit or fault, etc., providing time domain information for in-depth analysis of the circuit board status.

[0063] To facilitate the user to control the detection equipment and realize the linkage diagnosis function with the thermal imaging system, in an optional embodiment, the standard protocol interface 5 is further configured to be connected to the thermal imaging system; the plurality of physical keys 4 include a thermal imaging key; in response to an event that the thermal imaging key is triggered by the user, the control unit sends a thermal imaging instruction to the thermal imaging system through the standard protocol interface 5. Specifically, there may be a plurality of standard protocol interfaces 5, and the interface type of each standard protocol interface 5 may also be different, so as to facilitate accessing different devices by using the standard protocol interfaces 5.

[0064] In this embodiment, when the user presses the thermal imaging key, the control unit responds to this trigger event, and sends a thermal imaging instruction to the thermal imaging system through the standard protocol interface 5 to control it to start or stop capturing thermal images. Thereby, the linkage diagnosis with the thermal imaging system is realized, and the linkage control can be realized only based on the keys of the integrated DC power supply, which is convenient for the user to control the detection equipment.

[0065] To achieve a better thermal imaging detection effect, in an optional embodiment, the integrated DC power supply further includes a switch unit, the first pole and the second pole of the switch unit are connected between the power output interface 2 and the DC power supply, and the control pole of the switch unit is connected to the control unit; the plurality of physical keys 4 include an intermittent power supply key; in response to an event that the intermittent power supply key is triggered by the user, the control unit outputs an intermittent on-off control signal that switches back and forth between conduction and disconnection to the switch unit at a preset frequency, so that the power output interface 2 supplies DC power to the circuit board under test at the preset frequency, so that the thermal imaging device performs thermal imaging at the on-off frequency. Specifically, the switch unit may be implemented by a transistor, which may be a P-type MOS transistor or an N-type MOS transistor.

[0066] In practice, when the user triggers the intermittent power supply button, the control unit outputs an intermittent on / off control signal to the control electrode of the switching unit at a preset frequency. This causes the switching unit to periodically turn on and off, resulting in the output voltage of power output interface 2 switching between normal power supply and zero voltage at the same frequency.

[0067] This intermittent power supply mode causes periodic heating and cooling of fault points (such as short-circuited components) on the circuit board under test. In the thermal imaging image, the temperature of normal components changes gradually, while the fault point will show a strong "flickering" effect, making even small thermal anomalies extremely noticeable in the thermal imaging image, thereby improving the efficiency and accuracy of fault component location.

[0068] To achieve bidirectional operation of the integrated DC power supply, data processing, analysis, and archiving are performed using the powerful processing capabilities of the host computer. In an optional embodiment, the standard protocol interface 5 is also used to connect to the host computer to receive parameter configurations issued by the host computer and / or upload signal data of the integrated DC power supply to the host computer.

[0069] Specifically, the DC power supply can receive parameter configurations (such as set voltage, current values, and operating modes) from a host computer, thus enabling remote control. Simultaneously, it can also upload locally acquired signal data (such as output voltage and current waveforms and received detection signals) to the host computer, facilitating more complex data analysis, storage, or report generation. This provides operational flexibility, allowing it to function as either an independent host or a controlled slave.

[0070] To improve testing efficiency, in an optional embodiment, the multiple physical buttons 4 include buttons for switching function modes and rotary buttons for parameter adjustment. The control unit is configured to save the current power supply settings to a quick memory position in response to a long press of the function mode switching button. Specifically, the function mode can be, for example, switching between constant voltage (CV) and constant current (CC) modes. The control unit is configured to support a quick memory function. After setting a set of commonly used parameters (e.g., 3.3V / 0.5A), the user can press and hold a function mode switching button (e.g., the M1 button) for more than 3 seconds, and the control unit will save the current power supply settings to the quick memory position corresponding to that button. Subsequently, in any interface, a short press of the M1 button will immediately restore the power supply to the parameter settings saved at that position, thereby improving the efficiency of frequently switching commonly used settings.

[0071] To improve the practicality and convenience of the device, please refer to the optional embodiments. Figure 1The power output interface 2 includes a banana-head output interface 21 and a USB interface 22. The banana-head output interface 21 is used to provide DC power to the circuit board under test; the USB interface 22 is used to provide standard USB power to external devices. Specifically, the banana-head output interface 21 is a universal and reliable interface in the repair and testing field, which can provide adjustable high-power DC power to the circuit board under test. The USB interface 22 is used to provide standard 5V USB power to external devices (such as mobile phones, debugging boards, etc.), avoiding the hassle of finding an additional USB charger and increasing the practicality and convenience of the device.

[0072] In practice, the banana-head output interface 21 and the USB interface 22 are located at the front of the housing 10; the power input interface 1 is located at the rear of the housing 10. Specifically, the interfaces for user connection and operation are all located at the front of the housing 10, including the banana-head output interface 21, the USB interface 22, as well as buttons and a screen. The power input interface 1 is located at the rear of the housing 10. This layout facilitates testing operations by the user in front of the device, and prevents contact with mains power during operation in the operating area (front), thus improving safety and user experience.

[0073] An integrated DC power supply disclosed in an embodiment of the present invention achieves the following significant effects through the coordinated configuration of a larger than 5-inch LCD screen, multiple surrounding physical buttons, and a control unit:

[0074] 1. It achieves high integration and functional fusion, eliminating dependence on host computers.

[0075] By integrating a large display screen and multi-function buttons, the DC power supply of this invention possesses human-computer interaction and data processing capabilities. Users can perform complex parameter settings and mode switching directly on the device, and view output parameters and power curves in real time and intuitively, without relying on an external host computer or software. This improves the device's portability and ease of use, reduces the user's overall cost of ownership and operational complexity, making it a truly independent intelligent device.

[0076] 2. Provides rich and intuitive human-computer interaction and information display capabilities.

[0077] A larger than 5-inch LCD screen replaces the traditional digital tube or small screen of the power supply, providing sufficient resolution and display area. This allows multiple information such as voltage, current, power, and waveform curves to be presented to the user simultaneously, clearly, and intuitively, enriching the amount of visual information and facilitating the user's comprehensive understanding of the power supply's operating status and the response of the circuit board under test. Multiple physical buttons arranged around the screen provide a direct, efficient, and reliable control method, which, combined with the on-screen menu, improves operational efficiency and user experience.

[0078] 3. Reduced the area occupied by the control panel and improved ease of operation.

[0079] Compared to traditional host computer control methods, this invention integrates functions, allowing users to power the circuit board under test and display data simply by carrying a DC power supply. This not only reduces the space occupied by the control panel but also eliminates the need for connecting to a host computer or carrying a host computer device, thereby improving the convenience of user operation.

[0080] It will be understood by those skilled in the art that the above-described preferred solutions can be freely combined and superimposed without conflict. The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings; for example, two consecutively indicated blocks may actually be executed substantially in parallel, or sometimes in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. The numbering of each step in this document is for ease of explanation and reference only and is not intended to limit the order of execution. The specific execution order is determined by the technology itself, and those skilled in the art can determine various permissible and reasonable orders based on the technology itself.

[0081] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0082] It should be understood that the above embodiments are merely exemplary and not restrictive. Various obvious or equivalent modifications or substitutions that can be made by those skilled in the art regarding the above details without departing from the basic principles of the present invention will be included within the scope of the claims of the present invention.

Claims

1. An integrated DC power supply, comprising: A power input interface (1) for converting AC power to DC power, and a power output interface (2) for providing DC power to the circuit board under test, characterized in that it further includes: The liquid crystal display screen (3), which is larger than 5 inches, is installed on the housing (10) of the integrated DC power supply; the liquid crystal display screen (3) is used to display user input, the output parameters of the integrated DC power supply and the output power curve; Multiple physical buttons (4) are arranged around the LCD screen on the housing (10); The control unit is electrically connected to the power output interface (2), the LCD screen (3), and the plurality of physical buttons (4), respectively. The control unit is configured to display the user input received by the plurality of physical buttons (4) through the LCD screen (3) and control the working mode and output parameters of the integrated DC power supply.

2. The integrated DC power supply as described in claim 1, characterized in that, Also includes: The standard protocol interface (5) is used to connect to the current and voltage meter signal and receive the detection signal of the circuit board under test collected by the current and voltage meter. The intensity of the detection signal is displayed on the liquid crystal display screen (3) in the form of a pointer.

3. The integrated DC power supply as described in claim 2, characterized in that, The deflection angle of the pointer is positively correlated with the magnitude of the current in the detection signal.

4. The integrated DC power supply as described in claim 2, characterized in that, The control unit draws and displays the detection waveform in a time sequence on the liquid crystal display screen (3) based on the signal strength of the detection signal.

5. The integrated DC power supply as described in any one of claims 2-4, characterized in that, The standard protocol interface (5) is also used to connect to a thermal imaging system; The plurality of physical buttons (4) include: a thermal imaging button; In response to the event that the thermal imaging button is triggered by the user, the control unit sends a thermal imaging command to the thermal imaging system through the standard protocol interface (5).

6. The integrated DC power supply as described in claim 5, characterized in that, Also includes: The switching unit has its first and second poles connected between the power output interface (2) and the DC power supply, and its control pole connected to the control unit; The plurality of physical buttons (4) include: an intermittent power supply button; In response to the event triggered by the user on the intermittent power supply button, the control unit outputs an intermittent on / off control signal to the switch unit at a preset frequency, which switches between on and off, so that the power output interface (2) provides DC power to the circuit board under test at the preset frequency, so that the thermal imaging device performs thermal imaging at the preset frequency.

7. The integrated DC power supply as described in any one of claims 2-4, characterized in that, The standard protocol interface (5) is also used to connect to a host computer to receive parameter configurations sent by the host computer and / or upload signal data of the integrated DC power supply to the host computer.

8. The integrated DC power supply as described in any one of claims 2-4, characterized in that, The plurality of physical buttons (4) include buttons for switching function modes and rotary buttons for adjusting parameters; The control unit is configured to save the current power settings to a quick memory level in response to a long press operation on the function mode switching button.

9. The integrated DC power supply as described in any one of claims 2-4, characterized in that, The power output interface (2) includes: The banana-head output interface (21) is used to provide DC power to the circuit board under test; The USB interface (22) is used to provide USB standard power to the outside.

10. The integrated DC power supply as described in claim 9, characterized in that, The banana head output interface (21) and the USB interface (22) are located on the front of the housing (10); The power input interface (1) is located at the rear of the housing (10).

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