A voice reading digital display type electric tester

Abstract

The embodiment of the present disclosure provides a voice reading digital display type electric tester, comprising: a pen body; a pen tip arranged at the front end of the pen body and used for contacting a circuit to be measured; a voltage detection and processing module arranged in the pen body and electrically connected with the pen tip, used for collecting and processing a voltage signal to obtain voltage data; a digital display screen arranged on the surface of the pen body and electrically connected with the voltage detection and processing module, used for displaying the voltage data; a voice broadcast module electrically connected with the voltage detection and processing module, used for receiving the voltage data and broadcasting corresponding prompt voice; and a power supply module used for supplying power for the voltage detection and processing module, the digital display screen and the voice broadcast module.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the technical field of electrical testing tools, specifically relating to a voice-announced reading display test pen device. Background Technology

[0002] As a fundamental tool for electrical testing, the core function of a test pen is to determine whether a conductor is energized and to roughly estimate the voltage range. Traditional test pens mainly rely on a neon bulb for indication. Their working principle involves introducing a small current into the neon bulb through a current-limiting resistor, which then excites the neon gas to emit light using an electric field. While simple in structure and inexpensive, these test pens have significant drawbacks: First, they can only provide a qualitative judgment (energized / non-energized), unable to obtain precise voltage values, making them unsuitable for scenarios requiring accurate voltage parameters in modern electrical repairs. Second, their indication method relies entirely on visual observation, which is difficult to observe in dimly lit distribution boxes, inside equipment, or at night, easily leading to misjudgments. Third, these tools are essentially unusable for visually impaired individuals or elderly electricians with declining vision.

[0003] To overcome the aforementioned problems, digital display voltage test pens have emerged. Through built-in voltage sensing circuits, analog-to-digital converters (ADCs), and liquid crystal displays (LCDs) or light-emitting diode (LED) digital tubes, they can directly display the AC / DC voltage value of the measured point, achieving a leap from qualitative to quantitative analysis. However, existing digital display voltage test pens still suffer from human-computer interaction bottlenecks: users must focus their gaze on the small display screen on the pen to read the results. In complex working environments requiring tilting the head, turning the body, or using both hands, distracting the eyes to read the values ​​is not only inconvenient but may also pose safety risks. Furthermore, this design does not address the usage barriers for visually impaired individuals; its "visual center" interaction logic remains fundamentally unchanged. In addition, while voltage test pens with simple sound prompts have appeared on the market (e.g., a single-frequency beep indicating the presence of electricity), their prompts are extremely limited, unable to announce specific voltage values, and functionally lag behind digital display voltage test pens, failing to achieve a fusion and upgrade in information presentation methods.

[0004] Therefore, developing a test pen that can output precise voltage values ​​synchronously and intuitively through both visual (digital display) and auditory (voice) channels is of great practical significance for improving testing efficiency, ensuring operational safety, and promoting the widespread availability of tools. It is also a clear direction for technological development in this field. Summary of the Invention

[0005] The embodiments disclosed herein are intended to at least address one of the technical problems existing in the prior art, and to provide a voice-reporting display test pen.

[0006] One aspect of the embodiments of this disclosure provides a voice-announcement reading display test pen, comprising: a pen body; The pen tip, located at the front end of the pen body, is used to contact the circuit being tested. A voltage detection and processing module is located inside the pen body and electrically connected to the pen tip, used to collect and process voltage signals to obtain voltage data; A digital display screen is disposed on the surface of the pen body and electrically connected to the voltage detection and processing module for displaying voltage data; The voice broadcast module is electrically connected to the voltage detection and processing module and is used to receive voltage data and broadcast corresponding prompt voices. The power supply module is used to supply power to the voltage detection and processing module, the digital display screen, and the voice broadcast module.

[0007] Optionally, the voltage detection and processing module includes: a signal conditioning unit, an analog-to-digital conversion unit, and a microprocessor connected in sequence; the input terminal of the signal conditioning unit is connected to the pen tip and is used to perform voltage reduction and filtering processing on the collected voltage signal; the output terminal of the microprocessor is connected to the digital display screen and the voice broadcast module respectively.

[0008] Optionally, the voice broadcast module includes: a voice chip electrically connected to the microprocessor, which has pre-stored voice data corresponding to different voltage data ranges; and a speaker electrically connected to the voice chip for playing prompt voices.

[0009] Optionally, the microprocessor is configured to: determine a power-off state when the voltage data is below a first preset threshold, and control the speaker to broadcast a power-off warning voice through the voice chip; determine a safe voltage state when the voltage data is between the first preset threshold and a second preset threshold, and control the speaker to broadcast a warning voice indicating the specific voltage value through the voice chip; determine a dangerous voltage state when the voltage data is above the second preset threshold, and control the speaker to broadcast a warning voice indicating a potential power hazard, and also broadcast the specific voltage value.

[0010] Furthermore, it also includes: function buttons, which are disposed on the surface of the pen body and electrically connected to the microprocessor, for controlling the switching of at least one of the following functions: power switch, broadcast mode, or display mode.

[0011] Optionally, the broadcast mode includes: The microprocessor controls the voice broadcasting module to perform an automatic broadcasting mode based on the obtained valid voltage data. The microprocessor, based on obtaining valid voltage data and receiving trigger signals from the function keys, controls the voice broadcast module to perform a key-triggered broadcast mode; and, The microprocessor controls the voice broadcast module to be in a closed state, and displays the voltage data in a silent broadcast mode on the digital display screen.

[0012] Optionally, the power module includes a button cell battery or a dry cell battery; the voltage detection and processing module also integrates a low-voltage detection circuit electrically connected to the voice broadcast module, the low-voltage detection circuit being configured to trigger the voice broadcast module to broadcast a low battery warning voice when it detects that the battery voltage is insufficient.

[0013] Optionally, the pen body is also provided with a lanyard hole at the end.

[0014] The beneficial effects of the embodiments of this disclosure include: This application solves the problem of inconvenient observation in low-light environments by using digital display and simultaneous voice output. Its voice broadcast function allows users to safely make judgments without visual inspection, significantly improving operational safety and providing independent use for visually impaired individuals. This design makes information transmission more intuitive, effectively avoiding misreading and improving the reliability and efficiency of testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a voice-announced reading display test pen according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the internal structure of a voice-announcement reading display test pen according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the circuit principle of a voice-announced reading display test pen according to an embodiment of the present disclosure.

[0016] In the diagram, 1. Pen body; 2. Pen tip; 3. Digital display screen; 4. Voltage detection and processing module; 5. Voice broadcast module; 6. Function buttons; 7. Lanyard hole; 8. Power module; 41. Signal conditioning unit; 42. Analog-to-digital conversion unit; 43. Microprocessor; 51. Voice chip; 52. Speaker; 53. Speaker hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed descriptions and accompanying drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but should not be used to limit the scope of this application; that is, this application is not limited to the described embodiments. In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0019] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0020] The technical problem this application aims to solve is to overcome the inherent deficiency of existing test pens (including traditional neon bulb type and ordinary digital display type) that rely entirely on visual observation, and to provide a test pen that can both "see" and "hear" the test results. Its fundamental purpose is to ensure, by introducing an automatic voice broadcast function that works in conjunction with the digital display function, that users can safely, conveniently, and accurately obtain information on the electrical status and voltage value under any lighting conditions and for users with limited vision.

[0021] like Figure 1-3 As shown, a voice-announcement and display test pen includes a pen body 1, a pen tip 2, a voltage detection and processing module 4, a digital display screen 3, a voice broadcast module 5, and a power supply module 8.

[0022] The pen tip 2 is located at the front end of the pen body 1 and is used to contact the circuit being tested. The voltage detection and processing module 4 is located inside the pen body 1 and is electrically connected to the pen tip 2. It is used to collect and process voltage signals to obtain voltage data.

[0023] A digital display screen 3 is disposed on the surface of the pen body 1 and electrically connected to the voltage detection and processing module 4 for displaying voltage data. A voice broadcast module 5 is electrically connected to the voltage detection and processing module 4 for receiving voltage data and broadcasting corresponding prompt voices. A power supply module 8 is used to supply power to the voltage detection and processing module 4, the digital display screen 3, and the voice broadcast module 5.

[0024] This application presents a specialized, integrated testing pen capable of "detection-display-announcement." By simultaneously displaying a digital image and providing voice output, it overcomes the challenge of traditional testing pens being difficult to use in low-light conditions. Its voice announcement function allows users to safely assess the problem without visual inspection, significantly improving operational safety and providing independent use for visually impaired individuals. This design makes information transmission more intuitive, effectively avoiding misreading and enhancing testing reliability and operational efficiency.

[0025] In some embodiments, the voltage detection and processing module 4 includes a signal conditioning unit 41, an analog-to-digital converter 42, and a microprocessor 43 connected in sequence. The input terminal of the signal conditioning unit 41 is connected to the pen tip 2 and is used to step down and filter the acquired voltage signal. The output terminal of the microprocessor 43 is connected to the digital display screen 3 and the voice broadcast module 5, respectively.

[0026] In this application, the signal conditioning unit 41 ensures that the high-voltage signal is safely and without distortion converted into a processable low-voltage signal, and the analog-to-digital converter microprocessor 43 provides accurate digital input. As the core, the microprocessor 43 can not only calculate the accurate voltage value, but also synchronously drive the digital display screen 3 and the voice module, realizing the integration and automation of detection, display and broadcasting.

[0027] In some embodiments, the voice broadcast module 5 includes: a voice chip 51 electrically connected to the microprocessor 43, which internally stores voice data corresponding to different voltage data ranges; and a speaker 52 electrically connected to the voice chip 51 for playing prompt voice messages.

[0028] In this application, the above-mentioned settings can convert abstract voltage values ​​into easily understandable speech, making the detection results "audible." Furthermore, by using pre-stored data, automatic and accurate voice broadcasting is achieved, improving the automation level and user-friendliness of human-computer interaction.

[0029] In some embodiments, the microprocessor 43 is configured to: determine a power-off state when the voltage data is below a first preset threshold, and control the speaker 52 via the voice chip 51 to broadcast a power-off warning message; determine a safe voltage state when the voltage data is between the first preset threshold and a second preset threshold, and control the speaker 52 via the voice chip 51 to broadcast a warning message indicating the specific voltage value; and determine a dangerous voltage state when the voltage data is above the second preset threshold, and control the speaker 52 via the voice chip 51 to broadcast a warning message indicating a potential power hazard, along with the specific voltage value.

[0030] In this application, the aforementioned settings are used to automatically distinguish between three states: no power, safe, and dangerous, making the detection results more practically instructive. Matching voice content (such as warning messages overlaid on dangerous states) is output for different risk levels, greatly enhancing operational safety. Furthermore, users can directly obtain processed, conclusive safety status information without interpreting raw data, enabling faster decision-making.

[0031] In some embodiments, it further includes: a function button 6, disposed on the surface of the pen body 1, electrically connected to the microprocessor 43, used to control the switching of at least one of the following functions: power switch, broadcast mode, or display mode.

[0032] In this application, the above settings allow users to flexibly switch between automatic announcement, button announcement, or silent mode according to the environment (such as the need for a quiet night) or personal preference. This enhances adaptability to different usage scenarios and helps achieve on-demand power supply, optimizing power consumption.

[0033] In some embodiments, the broadcast mode includes: The microprocessor 43 controls the voice broadcasting module 5 to perform automatic broadcasting mode based on the obtained valid voltage data.

[0034] The microprocessor 43, based on obtaining valid voltage data and receiving the trigger signal from the function button 6, controls the voice broadcast module 5 to perform a button-triggered broadcast mode. The microprocessor 43 controls the voice broadcast module 5 to be in a closed state, and displays the voltage data in a silent broadcast mode on the digital display screen 3.

[0035] This application constructs an adaptive human-computer interaction logic by defining three specific working modes: automatic broadcast, button trigger, and mute. Its core effect is to upgrade a single-function tool into an intelligent terminal that can intelligently respond to user needs and environmental changes: the automatic mode ensures timely and efficient information acquisition in normal scenarios; the button trigger mode gives users the initiative to obtain voice information on demand in noisy or quiet environments, avoiding unnecessary interference; and the mute mode balances privacy and low power consumption. This multi-mode design greatly expands the product's applicable scenarios and significantly improves operational convenience and overall user experience through user-perceptible autonomous control.

[0036] In some embodiments, the power module 8 includes a button cell battery or a dry cell battery. The voltage detection and processing module 4 also integrates a low-voltage detection circuit electrically connected to the voice broadcast module 5. The low-voltage detection circuit is configured to trigger the voice broadcast module 5 to broadcast a low battery warning voice when it detects that the battery voltage is insufficient.

[0037] In this application, by integrating a low-voltage detection circuit, self-monitoring of power status and proactive voice warning are realized. This can effectively prevent detection interruption or data misjudgment caused by power depletion. Through proactive voice alarms, the reliability of equipment use and the safety of user experience are significantly improved.

[0038] In some embodiments, the pen body 1 is also provided with a lanyard hole 7 at the tail.

[0039] This application discloses a voice-announcement and digital display test pen, which includes an insulated pen body, a metal pen tip at the front end, a voltage detection and processing module, a digital display screen, a voice broadcast module, and a power supply module. The microprocessor in the voltage detection and processing module processes the voltage signal collected by the pen tip, synchronously driving the digital display screen to show the precise voltage value, and controlling the voice broadcast module to output corresponding voice prompts, such as "no power" or the specific voltage value. By introducing a voice broadcast function combined with a digital display function, this application constructs a dual-channel information output mode of visual and auditory perception, effectively solving the problems of inconvenient observation in low-light environments and unfriendliness for visually impaired individuals associated with traditional test pens, significantly improving the safety, convenience, and applicability of testing operations.

[0040] Specifically, the test pen described in this application comprises an insulated pen body 1, a metal pen tip 2 disposed at the front end of the pen body 1, a digital display screen 3 mounted on the surface of the pen body 1, a voice broadcast module 5 integrated inside the pen body 1, a voltage detection and processing module 4, and a power supply module 8. All components are compactly arranged inside the pen body 1, forming a complete handheld testing instrument. It can be understood that the front end of the pen body 1 is the end on the pen body 1 used to mount the pen tip 2.

[0041] In some embodiments, the pen body 1 is made of engineering insulating material, forming a protective shell. A metal pen tip 2 is fixed to its front end, serving as a signal acquisition terminal. A digital display screen 3 (using an LCD or LED digital tube) is embedded in the middle panel of the pen body 1 for visually displaying voltage values. A speaker 52 is located near the digital display screen 3. One or more physical function buttons 6 are also provided on the side or front of the pen body 1 for performing operations such as powering on, powering off, and mode switching (e.g., automatic broadcast / mute mode switching).

[0042] In some embodiments, the core of the pen body 1 is a voltage detection and processing module 4, which integrates a signal conditioning unit 41, an analog-to-digital converter 42, and a microprocessor 43. These components are electrically connected sequentially and together form the signal processing center. The input terminal of the signal conditioning unit 41 is connected to the pen tip 2 and is responsible for acquiring and initially processing the voltage signal. The analog-to-digital converter 42 converts the processed analog signal into a digital signal, while the microprocessor 43 is responsible for analyzing and calculating the digital signal to obtain the final voltage value and generating display and broadcast instructions.

[0043] In some embodiments, the module is directly controlled by the microprocessor 43 and includes a voice chip 51 and a miniature speaker 52. The voice chip 51 has pre-recorded voice data packets corresponding to different detection results (such as "no power," "power on, danger," and numerical readings from "zero" to "several hundred," etc.). The microprocessor 43 sends instructions to the voice chip 51 according to the determined voltage value or state, and the voice chip 51 then calls up the corresponding voice data to drive the speaker 52 to emit a clear and loud voice prompt.

[0044] In some embodiments, power module 8 (typically a replaceable button cell battery or AAA battery) powers the entire circuit system. Protective components such as current-limiting resistors are included in the circuit to ensure safety during high-voltage testing.

[0045] Furthermore, when using the test pen of this application for testing, its automated workflow includes: 1) When the pen tip 2 touches the point being measured, the voltage signal is collected.

[0046] 2) After the signal is conditioned by the signal conditioning unit 41 and digitized by the analog-to-digital conversion unit 42, it is sent to the microprocessor 43.

[0047] 3) The microprocessor 43 calculates the voltage value in real time and simultaneously executes the following two actions: (1) Drive the digital display screen 3 to immediately display the calculated voltage values ​​(such as "10V" or "220V").

[0048] (2) According to the preset logic (e.g., when the voltage is below the safety threshold, broadcast "no power", when the voltage is within the safety range, broadcast the specific value, and when the voltage is above the danger threshold, broadcast "power, danger, xx volts"), control the voice broadcast module 5 to broadcast the corresponding prompt voice.

[0049] In this application, users receive both visual (screen digits) and auditory (voice content) feedback simultaneously, without the need for strenuous observation or interpretation.

[0050] For details, please refer to Figures 1-3 The present application provides a voice-announcement reading display test pen, which has an overall pen-shaped structure that is easy to hold, and mainly includes an outer shell, a detection probe, an information output unit and a control core.

[0051] like Figure 1 As shown, the test pen has a pen body 1 made of insulating engineering plastic, which constitutes the main outer shell of the product and has good insulation and a comfortable grip. A metal pen tip 2 is fixedly installed at the front end of the pen body 1, which serves as a direct voltage signal acquisition probe. A digital display screen 3 is embedded in an opening on the outer surface of the middle part of the pen body 1. In this embodiment, a low-power LCD liquid crystal display screen is preferably used to display digital voltage values. Near the digital display screen 3, there is a speaker hole 53, which corresponds to a speaker 52.

[0052] The pen body 1 has function buttons 6 installed on its side, including at least one multi-function button (such as short press for power on / off / mode switching, long press for locking, etc.). A lanyard hole 7 can be opened at the tail of the pen body 1 for easy carrying with a lanyard.

[0053] Figure 2 The typical internal layout of the test pen is shown. The internal cavity of the pen body 1 houses all electronic components, including the voltage detection and processing module 4, which is fixed to the middle of the pen body 1 via a slot or support and is the core of the entire device. The pen tip 2 is reliably connected to the input terminal on the voltage detection and processing module 4 via a wire or a flexible contact piece.

[0054] The voltage detection and processing module 4 integrates core functional units (such as...). Figure 3 (as shown), including: The signal conditioning unit 41, whose input terminal is connected to the pen tip 2, includes a high-resistance voltage divider network, a filter circuit, and protection components (such as a TVS diode). The signal conditioning unit 41 is used to safely step down and filter the high-voltage signal (such as 220V AC mains) acquired from the pen tip 2, convert it into a low-voltage analog signal that can be processed by subsequent circuits, and suppress interference and transient high-voltage surges.

[0055] The analog-to-digital conversion unit 42 (AD conversion unit) has its input terminal connected to the output terminal of the signal conditioning unit 41. The analog-to-digital conversion unit 42 is used to convert the conditioned analog voltage signal into a digital signal. In this embodiment, an ADC chip integrated inside the microprocessor or externally can be used.

[0056] The microprocessor 43 includes a low-power MCU (microcontroller). The microprocessor 43 receives digital signals from the analog-to-digital converter 42 and calculates the actual voltage value of the measured point using an internal program algorithm. As the control center, the microprocessor 43's output ports are connected to and drive the digital display screen 3 and the voice broadcast module 5, respectively.

[0057] The voice broadcast module 5 includes a voice chip 51 and a miniature speaker 52. The voice chip 51 pre-stores voice data segments corresponding to different detection results, such as basic voice units like "no power," "power on, please be careful," "zero," "one," "two," ... "ten," "hundred," "volt," etc., or directly stores complete prompt statements. The microprocessor 43 sends control commands and the data code to be broadcast to the voice chip 51 via serial or parallel communication based on the calculated voltage value. The voice chip 51 then synthesizes or calls the corresponding voice signal, which is then driven by the built-in power amplifier to emit a prompt sound through the speaker 52.

[0058] The power module 8 includes a battery compartment for accommodating button batteries (such as CR2032) or AAA batteries. It is mounted at the tail of the pen body 1 and connected to the power input terminal on the voltage detection and processing module 4 via wires, providing power to the entire system. A power management unit is also included in the circuit to enable low-power standby.

[0059] The specific work process includes: 1. In actual use, the operator holds the insulated pen body 1 and uses the pen tip 2 to contact the conductor of the circuit to be tested.

[0060] 2. The voltage signal enters the signal conditioning unit 41 through the pen tip 2. After safe voltage reduction and filtering, it is sent to the analog-to-digital conversion unit 42 to be converted into a digital quantity. 3. The microprocessor 43 reads this digital value and calculates the precise voltage value (e.g., 0V, 220V, etc.) using a preset calibration algorithm. Simultaneously, the program compares this voltage value with a preset safety threshold to determine whether it falls under a "no power," "safe voltage," or "dangerous voltage" state. 4. The microprocessor 43 synchronously performs the following operations: The calculated voltage value is sent to the digital display screen 3 driving circuit so that the voltage value is clearly displayed on the screen.

[0061] Based on the voltage value and status judgment result, the corresponding control command is generated and sent to the voice chip 51. For example, if no power is detected, "No power" is announced; if a safe voltage of 36V is detected, "Thirty-six volts" is announced; if 220V mains power is detected, "Power is available, 220 volts, please be careful" may be announced.

[0062] 5. Users can turn the device on and off using function button 6. In some embodiments, pressing function button 6 allows switching between "automatic broadcast mode" (automatic voice announcement after each detection), "manual broadcast mode" (requires pressing a button after each detection to broadcast, suitable for environments requiring quiet), and "silent mode" (display only, no broadcast).

[0063] In this application, through the implementation of the aforementioned hardware structure and workflow, this test pen can reliably and stably achieve integrated functions of voltage detection, numerical display, and voice reading. Regardless of ambient light levels, users can directly obtain key information through hearing, greatly reducing the risk of misjudgment due to observation difficulties. For visually impaired users, this tool provides the possibility of independent operation. This dual-channel feedback mechanism makes the professional operation of electrical testing more intuitive, safer, and more inclusive.

[0064] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A voice-activated reading display test pen, characterized in that, include: Pen body; The pen tip, located at the front end of the pen body, is used to contact the circuit being tested. A voltage detection and processing module is located inside the pen body and electrically connected to the pen tip, used to collect and process voltage signals to obtain voltage data; A digital display screen is disposed on the surface of the pen body and electrically connected to the voltage detection and processing module for displaying voltage data; The voice broadcast module is electrically connected to the voltage detection and processing module and is used to receive voltage data and broadcast corresponding prompt voices. The power supply module is used to supply power to the voltage detection and processing module, the digital display screen, and the voice broadcast module.

2. The voice-announcement reading display test pen according to claim 1, characterized in that, The voltage detection and processing module includes: a signal conditioning unit, an analog-to-digital converter, and a microprocessor connected in sequence; the input terminal of the signal conditioning unit is connected to the pen tip and is used to perform voltage reduction and filtering processing on the collected voltage signal; the output terminal of the microprocessor is connected to the digital display screen and the voice broadcast module respectively.

3. The voice-announcement reading display test pen according to claim 2, characterized in that, The voice broadcast module includes: a voice chip electrically connected to the microprocessor, which has pre-stored voice data corresponding to different voltage data ranges; and a speaker electrically connected to the voice chip for playing prompt voices.

4. The voice-announcement reading display test pen according to claim 3, characterized in that, The microprocessor is configured to: determine a power-off state when the voltage data is below a first preset threshold, and control the speaker to broadcast a power-off warning voice through the voice chip; determine a safe voltage state when the voltage data is between the first preset threshold and a second preset threshold, and control the speaker to broadcast a warning voice indicating the specific voltage value through the voice chip; determine a dangerous voltage state when the voltage data is above the second preset threshold, and control the speaker to broadcast a warning voice indicating a potential power hazard, and also broadcast the specific voltage value.

5. The voice-announcement reading display test pen according to claim 2, characterized in that, Also includes: Function buttons are located on the surface of the pen body and are electrically connected to the microprocessor. They are used to control the switching of at least one of the following functions: power switch, broadcast mode, or display mode.

6. The voice-announcement reading display test pen according to claim 5, characterized in that, The broadcast modes include: The microprocessor controls the voice broadcasting module to perform an automatic broadcasting mode based on the obtained valid voltage data. The microprocessor, based on obtaining valid voltage data and receiving trigger signals from the function keys, controls the voice broadcast module to perform a key-triggered broadcast mode; and, The microprocessor controls the voice broadcast module to be in a closed state, and displays the voltage data in a silent broadcast mode on the digital display screen.

7. The voice-announcement reading display test pen according to claim 1, characterized in that, The power module includes a button cell battery or a dry cell battery; the voltage detection and processing module also integrates a low-voltage detection circuit that is electrically connected to the voice broadcast module. The low-voltage detection circuit is configured to trigger the voice broadcast module to broadcast a low battery warning voice when it detects that the battery voltage is insufficient.

8. The voice-announcement reading display test pen according to claim 1, characterized in that, The pen body also has a lanyard hole at the end.

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