Handheld ultra-short wave radio station maintenance platform and detection system

Abstract

The invention discloses a handheld ultra-short wave radio station maintenance platform and detection system, and relates to the technical field of detection and maintenance, the handheld ultra-short wave radio station maintenance platform comprises a maintenance platform body, and the maintenance platform body is provided with a mounting assembly, a detection mechanism and a display mechanism. The device has the advantages that the PCBs in the handheld ultra-short wave radio station are sequentially laid on the corresponding station grooves, the PCBs are connected to the connecting holes formed in the PCBs needing to be detected in a rolling mode through the bolts, then the PCBs on the corresponding station grooves are detected through the detection plates, the detection plates are connected through the flat cables, the flexible boards or the connectors, and the detection efficiency is improved. The TOP surface and the BOTTOM surface of the PCB are completely exposed through the station grooves, the PCB needing to be detected can be electrified and operated conveniently through the selection buttons, the current frequency is transmitted to the electric frequency display screen after the PCB is connected, the electric frequency display screen is used for prompting the current of the PCB, and the effect that the maintenance platform can simulate the operation state of the whole machine is achieved.

Description

Technical Field

[0001] This invention relates to the field of testing and maintenance technology, specifically to a handheld VHF radio maintenance platform and testing system. Background Technology

[0002] A VHF radio is a relay or terminal station equipped with the communication equipment used to form a VHF communication circuit. It is also known as a VHF radio. Its operating frequency is 30–300 MHz; handheld radios, backpack radios, and VHF relays operating in this frequency band are all VHF radios.

[0003] Ultra-shortwave (UHF) radios refer to radio communication equipment operating at wavelengths of 10 to 1 meter. Strictly speaking, relay radios, scattering radios, and meteor trail communication equipment operating within this band also fall under the category of UHF radios. However, they typically refer to walkie-talkies, portable radios, and vehicle-mounted (or airborne, shipborne) radios that transmit signals over ground waves or space waves at line-of-sight. They mainly consist of a transceiver, antenna, and power supply. UHF radios can employ amplitude modulation (AM), frequency modulation (FM), and single-sideband (SSB) modulation schemes, but FM is the most common, offering superior anti-interference performance compared to AM and SSB.

[0004] Due to the large number of handheld VHF radio products in use, a certain number of malfunctioning units have occurred during use, necessitating a comprehensive maintenance platform for repairing and modifying these products.

[0005] 1. It facilitates the simulation of VHF radio stations;

[0006] 2. Able to quickly locate and repair damaged PCB boards in VHF radios;

[0007] 3. Overall, it facilitates increased PCB repair efficiency;

[0008] To address this, we propose a handheld VHF radio repair platform and testing system. Summary of the Invention

[0009] The purpose of this invention is to provide a handheld VHF radio repair platform and testing system.

[0010] To address the problems mentioned in the background art, the present invention provides the following technical solution: a handheld VHF radio maintenance platform, comprising a maintenance platform body and a protective shell disposed on the outer side of the maintenance platform body. The maintenance platform body is respectively provided with mounting components and a detection mechanism. The mounting components include mounting plates and bolts. At least four mounting components are disposed on the top surface of the maintenance platform body. A work station groove is formed on the inner wall of the maintenance platform body. A mounting plate is fixedly installed on the inner wall of the work station groove. Bolts are rotatably connected to the inner wall of the mounting plate. The detection mechanism includes a connecting rod and a detection plate. A connecting rod is detachably installed on the top of the maintenance platform body. A detection plate is detachably installed on the top end of the connecting rod. The detection plate is located directly above the work station groove and is electrically connected to the inner wall of the maintenance platform body.

[0011] As a further aspect of the present invention: the repair platform body is a PCB board, and the detection mechanism and the display mechanism are both electrically connected to the repair platform body.

[0012] As a further embodiment of the present invention: a display mechanism is provided on the outer side of the protective shell, the display mechanism including an electric frequency display screen, indicator lights and selection buttons, and an electric frequency display screen, indicator lights and selection buttons are detachably installed on the top of the protective shell, and the number of electric frequency display screens, indicator lights and selection buttons is consistent with the number of workstation slots.

[0013] As a further aspect of the present invention: an output port is fixedly installed on the side of the frequency display screen, and the output port is connected to the host via a 14-core ribbon cable.

[0014] As a further embodiment of the present invention: a power supply board is detachably installed on the side of the maintenance platform body, and a 4-pin socket is fixedly connected to the top of the power supply board. The 4-pin socket is electrically connected to the frequency display screen and the detection mechanism.

[0015] As a further embodiment of the present invention: the selection button is electrically connected to the data flexible board, and a USB interface and a DB9 serial port are fixedly installed on the side of the data flexible board.

[0016] As a further embodiment of the present invention: support rods are detachably installed around the bottom of the maintenance platform body, and the bottom ends of the support rods are installed on the inner wall of the protective shell.

[0017] A testing system for a handheld VHF radio maintenance platform includes a power supply module, a voltage regulation and isolation module, a key selection module, a logic module, a switching indicator module, a data acquisition module, a display module, and a communication module. The power supply module and the voltage regulation and isolation module are communicatively connected. The voltage regulation and isolation module is communicatively connected to the key selection module, the logic module, the data acquisition module, and the display module. The key selection module and the logic module are communicatively connected. The logic module is communicatively connected to the switching indicator module and the data acquisition module. The data acquisition module is communicatively connected to the display module and the communication module.

[0018] As a further aspect of the present invention: the power supply module supplies power to the voltage regulation and isolation module, and the voltage regulation and isolation module provides a stable DC power supply to the button selection module, logic module, acquisition module, and display module, wherein the specific steps are as follows:

[0019] Step 1: Provide a stable DC power supply to the button selection module, logic module, data acquisition module, and display module through the power supply module and voltage regulation and isolation module.

[0020] Step 2: The operator inputs commands to the button selection module, and the logic module controls the acquisition module to detect the circuit board and collect the detection data. The logic module also controls the switching indicator module to display whether the tested item is on the correct path.

[0021] Step 3: When the circuit board is connected, the DC voltage value is displayed on the display module, and at the same time, the data obtained by the acquisition module is transmitted to the external host through the communication module.

[0022] Compared with the prior art, the beneficial effects of the present invention by adopting the above technical solution are as follows:

[0023] This invention involves laying PCBs from a handheld VHF radio sequentially on corresponding workstation slots. Bolts are used to connect the PCBs to be tested through pre-drilled holes on the mounting plate, securing the PCBs. A connecting rod connects the PCBs to the maintenance platform body, facilitating the mounting of the connecting rod and the testing board. The testing board then tests the PCBs in the corresponding workstation slots. The testing boards are connected via ribbon cables, flexible circuit boards, or connectors. The workstation slots fully expose the top and bottom surfaces of the PCBs. A selection button allows for easy power-on operation of the PCBs to be tested. Once the PCB is connected, the current frequency is transmitted to the frequency display screen, which indicates the current level of the PCB. This allows the maintenance platform to simulate a positive polarity operating state.

[0024] This invention uses an electrical frequency display screen with the same number of workstation slots, and each workstation slot has a PCB board connected to the electrical frequency display screen. This allows the electrical frequency display screen to show the frequency of the corresponding PCB board test circuit. The test board is used to test the installed PCB board, and the test points on the repair platform body facilitate the testing of the PCB boards in the whole system. This allows personnel to quickly find problems among the many PCB boards for repair, achieving the effect of rapid testing and repair of PCB boards by the repair platform body.

[0025] This invention utilizes a battery or socket to supply power to a power module, whether indoors or outdoors. A voltage stabilization and isolation module maintains the voltage at 14.4V. The stabilized power is then supplied to a button selection module, logic module, acquisition module, and display module. This facilitates stable DC power supply during PCB board testing, improving the accuracy of test results. The button selection module allows selection of the appropriate PCB board for testing. When a PCB board fails to pass through the testing circuit, the logic module controls a switching indicator module to alert the user. When a PCB board passes through the testing circuit, the circuit frequency is transmitted to the display module for frequency display, and the communication module transmits data. This allows for simultaneous testing of all CPB boards in a handheld VHF radio, increasing testing efficiency. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional schematic diagram in an embodiment of the present invention;

[0027] Figure 2 This is a second perspective view in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection relationship of the maintenance platform body in an embodiment of the present invention;

[0029] Figure 4 As described in the embodiments of the present invention Figure 3 Enlarged diagram of A in the middle;

[0030] Figure 5 This is a schematic diagram of the maintenance platform body in an embodiment of the present invention;

[0031] Figure 6 This is a three-dimensional schematic diagram of the detection mechanism in an embodiment of the present invention;

[0032] Figure 7 This is a system flowchart in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the steps in an embodiment of the present invention.

[0034] In the diagram: 1. Maintenance platform body; 2. Installation components; 21. Mounting plate; 22. Bolt; 23. Workstation slot; 3. Inspection mechanism; 31. Connecting rod; 32. Inspection plate; 4. Display mechanism; 41. Frequency display screen; 42. Indicator light; 43. Selection button; 5. Support rod; 6. Protective shell. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1, please refer to the appendix. Figure 1 - Appendix Figure 6 This invention provides a technical solution: a handheld VHF radio maintenance platform, comprising a maintenance platform body and a protective shell disposed on the outer side of the maintenance platform body, characterized in that: the maintenance platform body is respectively provided with mounting components and a detection mechanism; the mounting components include mounting plates and bolts; at least four mounting components are disposed on the top surface of the maintenance platform body; a work station groove is formed on the inner wall of the maintenance platform body; a mounting plate is fixedly installed on the inner wall of the work station groove; bolts are rotatably connected to the inner wall of the mounting plate; the detection mechanism includes a connecting rod and a detection plate; a connecting rod is detachably installed on the top of the maintenance platform body; a detection plate is detachably installed on the top end of the connecting rod; the detection plate is located directly above the work station groove; and the detection plate is electrically connected to the inner wall of the maintenance platform body.

[0037] Please see the appendix Figure 2 - Appendix Figure 4 The maintenance platform body 1 is made of PCB board. The detection mechanism 3 and the display mechanism 4 are electrically connected to the maintenance platform body 1. The display mechanism 4 is set on the outside of the protective shell 6. The display mechanism 4 includes an electric frequency display screen 41, an indicator light 42 and a selection button 43. The electric frequency display screen 41, indicator light 42 and selection button 43 are detachably installed on the top of the protective shell 6. The number of electric frequency display screens 41, indicator lights 42 and selection buttons 43 is the same as the number of workstation slots 23. An output port is fixedly installed on the side of the electric frequency display screen 41. The output port is connected to the host through a 14-core ribbon cable. A power supply board is detachably installed on the side of the maintenance platform body 1. A 4-core socket is fixedly connected to the top of the power supply board. The 4-core socket is electrically connected to the electric frequency display screen 41 and the detection mechanism 3. Support rods 5 are detachably installed around the bottom of the maintenance platform body 1. The bottom end of the support rods 5 is installed on the inner wall of the protective shell 6.

[0038] In this embodiment, when the PCB board is not connected, the detection mechanism 3 transmits data to the display mechanism 4, and then the indicator light 42 in the display mechanism 4 provides a prompt. The 20-pin socket, MMBX socket, SMA socket, 20-pin ribbon cable and SMA to MMBX RF cable are used to facilitate the transmission of the detected frequency to the frequency display screen 41.

[0039] In use, the PCB boards of the handheld VHF radio are laid flat on the corresponding workstation slots 23. The bolts 22 are rolled to the connection holes on the PCB board to be tested, and the bolts 22 are fixed on the mounting plate 21 to fix the PCB board to be tested. The connecting rod 31 is connected to the maintenance platform body 1, which facilitates the installation of the connecting rod 31 and the test board 32 on the maintenance platform body 1. Then, the test board 32 tests the PCB board on the corresponding workstation slot 23. The test boards 32 are connected to each other by ribbon cables, flexible boards or connectors. The workstation slots 23 make the TOP and BOTTOM sides of the PCB board completely exposed. The selection button 43 makes it easy to power on the PCB board to be tested. When the PCB board is connected, the current frequency is transmitted to the frequency display screen 41. The frequency display screen 41 indicates the current of the PCB board, so that the maintenance platform can simulate the positive terminal operation state.

[0040] Example 2, please refer to the appendix. Figure 1 - Appendix Figure 6 This invention provides a technical solution: a handheld VHF radio maintenance platform, comprising a maintenance platform body 1, wherein the maintenance platform body 1 is respectively provided with mounting components 2, a detection mechanism 3 and a display mechanism 4. The mounting components 2 include mounting plates 21 and bolts 22. At least four mounting components 2 are provided on the top surface of the maintenance platform body 1. A work station groove 23 is opened on the inner wall of the maintenance platform body 1. The mounting plates 21 are fixedly installed on the inner wall of the work station groove 23. Bolts 22 are rotatably connected to the inner wall of the mounting plates 21. The detection mechanism 3 includes a connecting rod 31 and a detection plate 32. The connecting rod 31 is detachably installed on the top of the maintenance platform body 1. The detection plate 32 is detachably installed on the top of the connecting rod 31 and is located directly above the work station groove 23. The display mechanism 4 includes a radio frequency display screen 41, an indicator light 42 and a selection button 43. The radio frequency display screen 41, the indicator light 42 and the selection button 43 are detachably installed on the top of the maintenance platform body 1, and the radio frequency display screen 41, the indicator light 42 and the selection button 43 are all located on the side of the work station groove 23.

[0041] Please see the appendix Figure 5 and attached Figure 6The protective shell 6 has a display mechanism 4 on its outer side. The display mechanism 4 includes an electrical frequency display screen 41, an indicator light 42, and a selection button 43. The top of the protective shell 6 is detachably equipped with an electrical frequency display screen 41, an indicator light 42, and a selection button 43. The number of electrical frequency display screens 41, indicator lights 42, and selection buttons 43 is the same as the number of workstation slots 23. The selection button 43 is electrically connected to the data flexible board. The side of the data flexible board is fixedly equipped with a USB interface and a DB9 serial port.

[0042] In this embodiment, the data flexible board is connected to the outside via USB interface and DB9 serial port. After the command is output to the detection board 32 by the selection button 43, the output command is displayed on the external display screen using DB9 serial port and USB interface.

[0043] In use, the number of frequency display screens 41 and workstation slots 23 are the same, and the PCB board set on each workstation slot 23 is connected to the frequency display screen 41, so that the frequency display screen 41 can display the frequency of the corresponding PCB board test circuit. The test board 32 is used to test the PCB board after installation, and the test points set on the repair platform body 1 are used to facilitate the testing of the PCB boards in the whole, so that personnel can quickly find the problems among the many PCB boards for repair, and achieve the effect of rapid testing and repair of PCB boards by the repair platform body 1.

[0044] Example 3, please refer to the appendix. Figure 7 - Appendix Figure 8 This invention provides a technical solution: a testing system for a handheld VHF radio maintenance platform, comprising a power supply module, a voltage regulation and isolation module, a key selection module, a logic module, a switching indicator module, a data acquisition module, a display module, and a communication module. The power supply module and the voltage regulation and isolation module are connected for communication. The voltage regulation and isolation module is connected for communication with the key selection module, the logic module, the data acquisition module, and the display module, respectively. The key selection module and the logic module are connected for communication. The logic module is connected for communication with the switching indicator module and the data acquisition module, respectively. The data acquisition module is connected for communication with the display module and the communication module, respectively.

[0045] Please see the appendix Figure 8 The power module supplies power to the voltage regulation and isolation module, which in turn provides a stable DC power supply to the button selection module, logic module, data acquisition module, and display module. The specific steps are as follows:

[0046] Step 1: Provide a stable DC power supply to the button selection module, logic module, data acquisition module, and display module through the power supply module and voltage regulation and isolation module.

[0047] Step 2: The operator inputs commands to the button selection module, and the logic module controls the acquisition module to detect the circuit board and collect the detection data. The logic module also controls the switching indicator module to display whether the tested item is on the correct path.

[0048] Step 3: When the circuit board is connected, the DC voltage value is displayed on the display module, and at the same time, the data obtained by the acquisition module is transmitted to the external host through the communication module.

[0049] In this embodiment, the communication module can be set to a 20-pin socket or a BNC audio port, the voltage regulation and isolation module isolates the test sample, and the button selection module selects the path on the PCB board for testing.

[0050] During use, power is supplied to the power module via battery or socket, whether indoors or outdoors. The voltage stabilization and isolation module stabilizes the voltage at 14.4V, and then the stabilized power is supplied to the button selection module, logic module, acquisition module, and display module. This facilitates stable DC power supply during PCB board testing, improving the accuracy of test results. The button selection module selects the corresponding PCB board for testing. When the PCB board being tested is not connected, the logic module controls the switching indicator module to operate, providing a prompt to the user. When the PCB board being tested is connected, the circuit frequency is transmitted to the display module for frequency display, and the communication module transmits data. This allows for simultaneous testing of all CPB boards in the handheld VHF radio, increasing testing efficiency.

[0051] Working principle:

[0052] The first step involves laying the PCB boards from the handheld VHF radio flat on the corresponding workstation slots 23. Bolts 22 are then rolled onto the connection holes on the PCB boards to be tested, securing them to the mounting plate 21. A connecting rod 31 connects the PCB boards to the maintenance platform body 1, allowing the connecting rod 31 and the testing board 32 to be mounted on the maintenance platform body 1. The testing board 32 then tests the PCB boards on the corresponding workstation slots 23. The testing boards 32 are connected via ribbon cables, flexible circuit boards, or connectors. The workstation slots 23 completely expose the top and bottom surfaces of the PCB boards. A selection button 43 allows the PCB boards to be powered on. Once the PCB board is connected, the current frequency is transmitted to the frequency display screen 41, which displays the current of the PCB board, thus simulating the positive polarity of the maintenance platform.

[0053] The second step involves ensuring that the number of frequency display screens 41 and workstation slots 23 are the same, and that the PCB boards installed on each workstation slot 23 are connected to the frequency display screens 41. This allows the frequency display screens 41 to display the frequency of the corresponding PCB board test circuits. The test board 32 is used to test the installed PCB boards, and the test points on the repair platform body 1 are used to facilitate the testing of the PCB boards in the whole system. This allows personnel to quickly find problems among the many PCB boards for repair, achieving the effect of rapid testing and repair of PCB boards by the repair platform body 1.

[0054] The third step involves supplying power to the power module via battery or socket, whether indoors or outdoors. The voltage stabilization and isolation module maintains the voltage at 14.4V, and then the stabilized power is supplied to the button selection module, logic module, acquisition module, and display module. This ensures a stable DC power supply for PCB board testing, improving the accuracy of test results. The button selection module selects the corresponding PCB board for testing. When the PCB board being tested is not connected, the logic module controls the switching indicator module to activate, providing a prompt to the operator. When the PCB board being tested is connected, the circuit frequency is transmitted to the display module for frequency display, and the communication module transmits data. This allows for simultaneous testing of all CPB boards in the handheld VHF radio, increasing testing efficiency.

[0055] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0056] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0057] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of this invention. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above invention, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0058] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A handheld VHF radio maintenance platform, comprising a maintenance platform body (1) and a protective shell (6) disposed on the outer side of the maintenance platform body (1), characterized in that: The maintenance platform body (1) is provided with an installation component (2) and a detection mechanism (3). The installation component (2) includes an installation plate (21) and bolts (22). At least four installation components (2) are provided on the top surface of the maintenance platform body (1). The inner wall of the maintenance platform body (1) is provided with a work station groove (23). The inner wall of the work station groove (23) is fixedly installed with an installation plate (21). The inner wall of the installation plate (21) is rotatably connected with bolts (22). The detection mechanism (3) includes a connecting rod (31) and a detection plate (32). The connecting rod (31) is detachably installed on the top of the maintenance platform body (1). The top of the connecting rod (31) is detachably installed with a detection plate (32). The detection plate (32) is located directly above the work station groove (23). The detection plate (32) is electrically connected to the inner wall of the maintenance platform body (1).

2. The handheld VHF radio maintenance platform according to claim 1, characterized in that: The maintenance platform body (1) is a PCB board, and the detection mechanism (3) and the display mechanism (4) are electrically connected to the maintenance platform body (1).

3. The handheld VHF radio maintenance platform according to claim 1, characterized in that: The protective shell (6) is provided with a display mechanism (4) on its outer side. The display mechanism (4) includes an electric frequency display screen (41), an indicator light (42), and a selection button (43). The top of the protective shell (6) is detachably equipped with an electric frequency display screen (41), an indicator light (42), and a selection button (43), and the number of electric frequency display screens (41), indicator lights (42), and selection buttons (43) is the same as the number of workstation slots (23).

4. The handheld VHF radio maintenance platform according to claim 3, characterized in that: The side of the frequency display screen (41) is fixedly equipped with an output port, which is connected to the host via a 14-core ribbon cable.

5. The handheld VHF radio maintenance platform according to claim 1, characterized in that: The maintenance platform body (1) has a power supply board that can be detachably installed on its side. A 4-pin socket is fixedly connected to the top of the power supply board. The 4-pin socket is electrically connected to the frequency display screen (41) and the detection mechanism (3).

6. The handheld VHF radio maintenance platform according to claim 1, characterized in that: The selection button (43) is electrically connected to the data flexible board, and a USB interface and a DB9 serial port are fixedly installed on the side of the data flexible board.

7. The handheld VHF radio maintenance platform according to claim 1, characterized in that: The maintenance platform body (1) has detachable support rods (5) installed around its bottom, and the bottom end of the support rods (5) is installed on the inner wall of the protective shell (6).

8. A testing system for a handheld VHF radio maintenance platform, characterized in that: The system includes a power supply module, a voltage regulation and isolation module, a button selection module, a logic module, a switching indicator module, a data acquisition module, a display module, and a communication module. The power supply module and the voltage regulation and isolation module are connected for communication. The voltage regulation and isolation module is connected for communication with the button selection module, the logic module, the data acquisition module, and the display module. The button selection module and the logic modules are connected for communication with each other. The logic module is connected for communication with the switching indicator module and the data acquisition module. The data acquisition module is connected for communication with the display module and the communication module.

9. The detection system for a handheld VHF radio maintenance platform according to claim 8, characterized in that: The power module supplies power to the voltage regulation and isolation module, which in turn provides a stable DC power supply to the button selection module, logic module, data acquisition module, and display module. The specific steps are as follows: Step 1: Provide a stable DC power supply to the button selection module, logic module, data acquisition module, and display module through the power supply module and voltage regulation and isolation module. Step 2: The operator inputs commands to the button selection module, and the logic module controls the acquisition module to detect the circuit board and collect the detection data. The logic module also controls the switching indicator module to display whether the tested item is on the correct path. Step 3: When the circuit board is connected, the DC voltage value is displayed on the display module, and at the same time, the data obtained by the acquisition module is transmitted to the external host through the communication module.

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