TDR impedance tester voice control system

Abstract

The utility model relates to the technical field of electronic measuring instruments, solves the technical problems that in the prior art, measuring signals are not stable, and a knob needs to be frequently operated for adjustment when poor contact occurs in the testing process, and particularly relates to a TDR impedance tester voice control system. The voice control system comprises a micro-processing module, a power supply circuit for supplying power to the system, a control circuit and a voice interaction circuit, and the voice interaction circuit is composed of a voice recognition circuit, an analog-to-digital conversion circuit and a voice broadcast circuit. The voice recognition circuit is composed of an MIC microphone used for receiving voice, a recognition chip and an analysis signal, manual knob adjustment is not needed under the action of the voice interaction circuit, after adjustment is completed, an adjustment result is fed back through the voice broadcast circuit, the working efficiency of workers is greatly improved, and the working efficiency of the workers is improved. Moreover, the waveform adjusted by voice control is more accurate, and the measurement accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic measuring instrument technology, and in particular to a voice control system for a TDR impedance tester. Background Technology

[0002] An impedance tester is an instrument used to evaluate the performance of an electrical system by measuring the electrical parameters of an alternating current signal. It is widely used in power systems, communication systems, medical equipment, industrial automation, and other fields. Impedance testers can measure parameters including complex impedances, reflection coefficients, and VSWR, helping users quickly and accurately understand the impedance characteristics of different components in an electrical system and analyze various problems and anomalies. Existing impedance testers often use button operation to control the measurement of various high-frequency, high-speed circuit boards, employing various knobs and switches for control. This makes it difficult to measure within PCB boards, FPCs, and short-wire transmissions, leading to poor contact and difficulty in obtaining stable waveforms. Furthermore, PCB traces vary in length, requiring frequent operation of the instrument knobs to control the movement or scaling of the waveform. This frequent adjustment method is difficult for one person to complete smoothly and often requires two people working together to quickly obtain a stable signal, resulting in low work efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a voice control system for a TDR impedance tester, which solves the technical problems of unstable measurement signals and the need for frequent knob adjustments when encountering poor contact during testing. It achieves the goal of fine-tuning the tester by voice control while working with both hands through a voice interaction circuit.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a voice control system for a TDR impedance tester, including a microprocessor module, a power supply circuit for supplying power to the system, and a control circuit, wherein the voice control system further includes a voice interaction circuit.

[0005] Preferably, the voice interaction circuit comprises a voice recognition circuit, an analog-to-digital conversion circuit, and a voice broadcasting circuit. The voice recognition circuit comprises a microphone for receiving voice, a recognition chip, and an analysis signal. The negative port of the microphone is connected to the MICN port of the recognition chip through a filter capacitor C2, and the positive port of the microphone is connected to the MICP port of the recognition chip through a filter capacitor C3. The PP1 / DAC port of the recognition chip is connected to a warning bell for providing audible prompts for faults. The PA8 port of the recognition chip is connected to the analysis signal and transmits the analysis signal to the analog-to-digital conversion circuit.

[0006] Preferably, the analog-to-digital conversion circuit consists of an analog-to-digital conversion chip, a current-limiting resistor R3, and a digital signal. The analysis signal is input to the VREF port of the analog-to-digital conversion chip, and the AUX port of the analog-to-digital conversion chip outputs the digital signal through the resistor R3.

[0007] Preferably, the voice broadcasting circuit consists of a feedback signal, a voice chip, and a broadcasting speaker. The digital signal is input to the PAO / SDA port of the voice chip, the PA1 / SCL of the voice chip outputs a feedback signal to the microprocessor module, and the DAC port of the voice chip outputs voice to the outside through the broadcasting speaker.

[0008] Preferably, the control circuit consists of a microprocessor signal, a current-limiting resistor R6, a transistor Q1, a relay, a protection diode D2, and a manual control circuit. The microprocessor signal is connected to the base of the transistor Q1 through the current-limiting resistor R6. The collector of the transistor Q1 is connected to the relay. The protection diode D2 is connected in parallel across the relay. One side of the relay switch is connected to the voice interaction circuit, and the other side is connected to the power supply circuit.

[0009] Preferably, the manual control circuit is connected in parallel on both sides of the relay switch, and the manual control circuit consists of a current-limiting resistor R7 and a button.

[0010] Preferably, the microprocessor module is an STM32F4, the recognition chip is an SNR3512VR, the analog-to-digital converter chip is an XPT2046, and the voice chip is a WTN5085.

[0011] By employing the above technical solution, this utility model provides a voice control system for a TDR impedance tester, which has at least the following beneficial effects:

[0012] 1. This utility model, through the function of the voice interaction circuit, can quickly recognize the voice signal after receiving it, and make corresponding adjustments to the signal according to the instructions stored in the tester. No manual knob adjustment is required. After the adjustment is completed, the adjustment result will be fed back through the voice broadcast circuit, enabling the staff to quickly complete the test work, greatly improving the work efficiency of the staff. In addition, the waveform of the voice-controlled adjustment is more accurate, improving the accuracy of the measurement.

[0013] 2. Through the control circuit, this utility model enables the tester to control the circuit by controlling the relay through the microprocessor. In special cases where the relay fails, the tester can also be controlled manually by pressing the buttons. This avoids the inability to complete normal measurement tasks after special circumstances occur, and improves the adaptability of the tester to special situations. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a structural block diagram of a voice control system for a TDR impedance tester according to the present invention.

[0016] Figure 2 This is a circuit diagram of the voice recognition circuit of this utility model;

[0017] Figure 3 This is a circuit diagram of the analog-to-digital conversion circuit of this utility model;

[0018] Figure 4 This is a circuit diagram of the voice broadcast circuit of this utility model;

[0019] Figure 5 This is a circuit diagram of the control circuit of this utility model.

[0020] In the diagram: 1. Voice interaction circuit; 11. Voice recognition circuit; 12. Analog-to-digital conversion circuit; 13. Voice broadcasting circuit; 2. Control circuit; 3. Power supply circuit; 4. Microprocessor module. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. This will allow for a full understanding and implementation of how this application uses technical means to solve technical problems and achieve technical effects.

[0022] Due to the unstable measurement signal in existing technologies, frequent knob adjustments are required when encountering poor contact during testing. Please refer to [the relevant documentation / reference]. Figure 1 - Figure 5This embodiment provides a voice control system for a TDR impedance tester, which allows for fine-tuning of the tester via voice control while both hands are working through a voice interaction circuit. The voice control system includes a microprocessor module 4, a power supply circuit 3 for powering the system, and a control circuit 2. The voice control system also includes a voice interaction circuit 1, which consists of a voice recognition circuit 11, an analog-to-digital converter circuit 12, and a voice broadcasting circuit 13. The voice recognition circuit 11 consists of a microphone for receiving voice, a recognition chip, and an analysis signal. The negative port of the microphone is connected to the MICN port of the recognition chip through a filter capacitor C2, and the positive port of the microphone is connected to the MICP port of the recognition chip through a filter capacitor C3. The PP1 / DAC port of the recognition chip is connected to a warning bell for providing audible alerts for faults. The PA8 port of the identification chip is connected to the analysis signal and transmits the analysis signal to the analog-to-digital converter circuit 12. The analog-to-digital converter circuit 12 consists of an analog-to-digital converter chip, a current-limiting resistor R3, and a digital signal. The analysis signal is input to the VREF port of the analog-to-digital converter chip, and the AUX port of the analog-to-digital converter chip outputs a digital signal through resistor R3. The voice broadcast circuit 13 consists of a feedback signal, a voice chip, and a broadcast speaker. The digital signal is input to the PAO / SDA port of the voice chip, and the PA1 / SCL of the voice chip outputs a feedback signal to the microprocessor module 4. The DAC port of the voice chip outputs voice to the outside through the broadcast speaker. The microprocessor module 4 is an STM32F4, the identification chip is an SNR3512VR, the analog-to-digital converter chip is an XPT2046, and the voice chip is a WTN5085.

[0023] In this invention, impedance is tested using a tester. After the operator turns on the power to start the tester, the power circuit 3 supplies power to the entire system. The microprocessor module 4, after starting, outputs a microprocessor signal to the control circuit 2. The control circuit 2 controls the relay to close, thereby activating the voice interaction circuit 1. After the voice interaction system 1 starts, it performs voice and microphone detection through a testing process before commencing operation. Before use, a voice command library needs to be established to facilitate voice recognition and execution of corresponding commands. The testing process of the voice interaction system 1 is as follows: S1, Initialize voice recognition parameters; S2, Update voice commands in the voice command library; S3, Check microphone settings; If the microphone is normal, proceed to step S4; If the microphone is abnormal, issue an error prompt and end recognition; S4, The microphone receives and recognizes the voice command; If the recognition is correct, proceed to step S5; If the recognition is incorrect, repeat step S4 until correct recognition is achieved and step S5 is reached; S5, Send the voice command to the execution device.

[0024] In the testing process, the voice recognition circuit 11 is mainly responsible for voice recognition and early warning prompts. The recognition circuit 11 receives sound signals through the MIC microphone and recognizes the signals through the recognition chip. When the voice interaction circuit 1 malfunctions or makes a recognition error, the warning bell will issue an early warning prompt. After the recognition is completed, an analysis signal is sent to the analog-to-digital conversion circuit 12. The analog-to-digital conversion circuit 12 converts the analysis signal into a digital signal and sends it to the voice broadcasting circuit 13. The voice broadcasting circuit 13 broadcasts the recognition result in the form of a broadcast according to the recognition instruction. After hearing the result, the staff confirms it. After receiving the confirmation instruction, the voice chip sends a feedback signal to the microprocessor module 4. The microprocessor module 4 executes the corresponding instruction according to the feedback signal. This allows the staff to control the tester by voice during other operations. The voice commands include the names of the various functions of the tester. For example, engineers can say specific commands such as "Start TDR test", "Adjust test frequency to 1GHz", "Display impedance curve", etc., to replace manual operation and achieve more convenient human-computer interaction.

[0025] The voice broadcast circuit 13 enables it to automatically broadcast relevant information when performing test operations, obtaining measurement results, or encountering abnormal situations. For example, it can announce "TDR test has started" at the start of the test, report "Impedance measurement value is 50Ω" after the measurement is completed, or issue an alarm "Impedance abnormality detected 3 meters from the starting point" when a line fault is detected. If the TDR impedance tester supports network communication such as via Wi-Fi, Bluetooth, or Ethernet, a matching mobile application or cloud service can be developed, allowing users to remotely send control commands through voice assistants on devices such as mobile phones and tablets, such as Siri, Google Assistant, or Alexa. Users only need to speak the corresponding commands to the device, and the commands are processed by the cloud and forwarded to the tester, realizing remote voice control. In the teaching or training environment of the TDR impedance tester, the voice module can be used to play pre-recorded tutorials, prompts, or warning messages. For example, in laboratory training courses, when students perform specific test steps, the voice module can automatically play the corresponding instructions to help students operate the equipment correctly. In complex automated testing equipment or production lines, TDR impedance testing is one component. The voice module can be used to report the overall system status, such as the current testing phase, completed tests, and preliminary assessments of results. In this case, voice output is part of the automated control system, enhancing overall system monitorability and human-machine communication efficiency. Through the voice interaction circuit 1, upon receiving a voice signal, it can quickly recognize the voice and adjust the signal accordingly based on the instructions stored in the tester. No manual knob adjustments are required. Once adjustments are complete, the results are fed back via a voice broadcast circuit, enabling staff to quickly complete testing, significantly improving work efficiency. Furthermore, the waveform of voice-controlled adjustments is more accurate, enhancing measurement accuracy.

[0026] Control circuit 2 consists of a microprocessor signal, a current-limiting resistor R6, a transistor Q1, a relay, a protection diode D2, and a manual control circuit. The microprocessor signal is connected to the base of transistor Q1 through the current-limiting resistor R6. The collector of transistor Q1 is connected to the relay. The protection diode D2 is connected in parallel across the relay. One side of the relay switch is connected to the voice interaction circuit, and the other side is connected to the power supply circuit. The manual control circuit is connected in parallel across the two sides of the relay switch and consists of a current-limiting resistor R7 and a button.

[0027] Because the control circuit of the tester's voice system is prone to malfunction, causing the switch to fail to start normally, please refer to... Figure 5In this invention, the control circuit 2, upon receiving a microprocessor signal, controls the relay via transistor Q1, thereby controlling the on / off state of the relay switch to activate and deactivate the voice interaction circuit 1. Simultaneously, since reverse induced current can easily be generated during switching, potentially damaging components, a protection diode D2 protects the circuit, preventing damage from the reverse induced current. If the relay or transistor Q1 malfunctions, manual operation can be performed using the manual control circuit. The voice interaction circuit 1 can be activated and deactivated by pressing buttons. Through the control circuit, this tester can control the circuit via the microprocessor-controlled relay, and in the event of relay failure, it can also be manually controlled via buttons, preventing the inability to complete normal measurement tasks and improving the tester's adaptability to special situations.

[0028] The above embodiments provide a detailed description of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A voice control system for a TDR impedance tester, comprising a microprocessor module (4), a power supply circuit (3) for supplying power to the system, and a control circuit (2), characterized in that, The sound control system also includes a voice interaction circuit (1); The voice interaction circuit (1) consists of a voice recognition circuit (11), an analog-to-digital conversion circuit (12), and a voice broadcasting circuit (13). The voice recognition circuit (11) consists of a microphone for receiving voice, a recognition chip, and an analysis signal. The negative port of the microphone is connected to the MICN port of the recognition chip through a filter capacitor C2, and the positive port of the microphone is connected to the MICP port of the recognition chip through a filter capacitor C3. The PP1 / DAC port of the recognition chip is connected to a warning bell for providing sound prompts for faults. The PA8 port of the recognition chip is connected to the analysis signal and transmits the analysis signal to the analog-to-digital conversion circuit (12).

2. The voice control system for a TDR impedance tester according to claim 1, characterized in that, The analog-to-digital conversion circuit (12) consists of an analog-to-digital conversion chip, a current-limiting resistor R3, and a digital signal. The analysis signal is input to the VREF port of the analog-to-digital conversion chip, and the AUX port of the analog-to-digital conversion chip outputs the digital signal through the resistor R3.

3. The voice control system for a TDR impedance tester according to claim 1, characterized in that, The voice broadcasting circuit (13) consists of a feedback signal, a voice chip and a broadcasting speaker. The digital signal is connected to the PAO / SDA port of the voice chip, the PA1 / SCL of the voice chip outputs a feedback signal to the microprocessor module (4), and the DAC port of the voice chip outputs voice to the outside through the broadcasting speaker.

4. The voice control system for a TDR impedance tester according to claim 1, characterized in that, The control circuit (2) consists of a microprocessor signal, a current-limiting resistor R6, a transistor Q1, a relay, a protection diode D2, and a manual control circuit. The microprocessor signal is connected to the base of the transistor Q1 through the current-limiting resistor R6. The collector of the transistor Q1 is connected to the relay. The protection diode D2 is connected in parallel across the two ends of the relay. One side of the relay switch is connected to the voice interaction circuit, and the other side is connected to the power supply circuit.

5. The voice control system for a TDR impedance tester according to claim 4, characterized in that, The manual control circuit is connected in parallel on both sides of the relay switch, and the manual control circuit consists of a current-limiting resistor R7 and a button.

6. The voice control system for a TDR impedance tester according to claim 1, characterized in that, The microprocessor module (4) is model STM32F4, the recognition chip is model SNR3512VR, the analog-to-digital converter chip is model XPT2046, and the voice chip is model WTN5085.

Images