A vehicle-mounted locomotive calibration recorder

Abstract

This utility model discloses an on-board locomotive calibration recorder, belonging to the technical field of electric locomotive calibration equipment. It includes a voice acquisition module, a voice recognition module, a light display control module, and a storage module. The voice acquisition module collects the voice responses of operators; the voice recognition module generates control signals by recognizing the voice; the light display control module controls the display status of multiple indicator lights based on these signals to intuitively guide the operation process; and the storage module stores all voice data. The device casing is made of fire-resistant and impact-resistant materials, and the power module has overcharge and undervoltage protection, ensuring high overall reliability and suitability for complex locomotive operating environments. This utility model effectively solves the problems of missed inspections and omissions that easily occur in traditional manual calibration by combining voice interaction with light indication, ensuring that key calibration items are completed on the first attempt and avoiding the waste of time and manpower caused by repeated tests.

Description

Technical Field

[0001] This utility model relates to the technical field of electric locomotive calibration equipment, specifically to an on-board locomotive calibration recorder. Background Technology

[0002] During the calibration of electric locomotives, all calibration items of the locomotive are fully verified in accordance with the operation standards. The calibration data is recorded by monitoring equipment and then scored by the monitoring and evaluation device. Only a perfect score can pass the acceptance test.

[0003] In actual locomotive calibration operations, if the calibration involves critical safety functions such as the power system and braking device, it must be completed in one go; any omissions require a full re-execution of the tests. If electrical safety testing is interrupted, the process must also be restarted from the initial state. Controlling the calibration process relies on manual operation. Due to the large number of items to be calibrated and personnel negligence, it is easy to miss items, directly leading to calibration tests frequently failing on the first attempt and requiring multiple re-calibrations. Repeated calibrations not only waste significant time and manpower but also delay the normal commissioning of electric locomotives, overall reducing the efficiency and reliability of the calibration work. Utility Model Content

[0004] The purpose of this utility model is to provide a vehicle-mounted locomotive calibration recorder to solve the problems mentioned in the background art, such as the easy omission of inspection items.

[0005] To achieve the above objectives, this utility model provides an on-board locomotive calibration recorder, including a voice acquisition module, a voice recognition module, a light display control module, and a storage module. The voice acquisition module is used to acquire the voice responses of operators. The voice recognition module is connected to the voice acquisition module and is used to recognize voice responses containing test item numbers or names and generate corresponding control signals. There are multiple indicator lights, each corresponding to a locomotive calibration item, and different locomotive calibration items are distinguished by corresponding text labels. The light display control module is connected to the voice recognition module and is used to control the display status of the corresponding indicator lights according to the control signals. The storage module is connected to the voice recognition module and is used to store the voice responses.

[0006] Furthermore, the light display control module includes a relay, which is used to connect or disconnect the circuit of the corresponding indicator light according to the control signal.

[0007] Furthermore, the indicator lights are LED lights, and their states include constantly on, off, or flashing, and the completion status of locomotive inspection items can be distinguished by the indicator light states.

[0008] Furthermore, the vehicle-mounted locomotive calibration recorder also includes an operation button module, which is connected to the voice acquisition module, the light display control module, and the storage module. The button module is used to manually trigger voice acquisition, light display status switching, and data query.

[0009] Furthermore, the vehicle-mounted locomotive calibration recorder also includes a housing made of fire-resistant and impact-resistant engineering materials. The voice acquisition module, voice recognition module, light display control module, storage module, and operation button module are all housed inside the housing.

[0010] Furthermore, the outer casing surface is provided with text markings corresponding to the indicator lights, and the outer casing surface is also provided with text markings corresponding to the operation button module.

[0011] Furthermore, the vehicle-mounted locomotive calibration recorder also includes a power module, which is located inside the housing. The power module is connected to the voice acquisition module, voice recognition module, light display control module, storage module, and operation button module. The power module is used to supply power to each module and is equipped with overcharge protection circuit and undervoltage protection circuit.

[0012] Furthermore, the storage module is a flash memory chip with data protection features.

[0013] Furthermore, the voice acquisition module uses a high-sensitivity microphone.

[0014] Next, based on the contents of this specification, examine the beneficial effects of this utility model. Write each type of beneficial effect in a separate paragraph. This utility model has the following beneficial effects compared to the prior art:

[0015] 1. This utility model effectively solves the problem of missed inspections and items caused by relying entirely on manual memory and operation in existing technologies through the coordinated work of the voice acquisition module and the indicator light control module. After each verification is completed, the operator confirms it via voice response. The recorder automatically recognizes the voice signal and controls the corresponding indicator light status change, thus forming clear and intuitive visual guidance. This ensures that the verification operation is completed in one go without omissions, eliminating process interruptions or retrying due to human error and avoiding the waste of time and manpower costs caused by repeated verification.

[0016] 2. This utility model uses a storage module to completely record the call-and-response voice throughout the entire operation process, providing a solid data foundation for verifying the traceability of the operation and defining responsibilities. Through the storage module with a flash memory chip featuring data protection, in case of disputes or malfunctions during subsequent evaluations, it is possible to quickly review and verify the data, accurately determining whether the problem stemmed from the operator's failure to execute instructions or the monitoring equipment's incorrect data recording. This helps to quickly pinpoint the root cause of the problem and improve the efficiency of operation and maintenance management.

[0017] 3. This utility model integrates commonly used functions such as confirmation, reset, and query through the operation button module, providing operators with a more direct and reliable operation method in addition to voice. The power module has overcharge and undervoltage protection functions, and combined with the shell made of fireproof and impact-resistant engineering materials, it ensures that the recorder can work stably and safely for a long time in the complex and harsh locomotive electrical environment, thus extending the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall system of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 4—Storage module; 5—Operation button module; 6—Outer shell; 7—Power supply module; 8—Indicator lights; 9—Relay; 10—Main display screen; 11—Microphone pickup hole; 12—Battery power display screen; 13—Power switch; 14 — Charging port. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] like Figures 1 to 2As shown, this embodiment of the present invention provides a vehicle-mounted locomotive calibration recorder, including a voice acquisition module 1, a voice recognition module 2, a light display control module 3, and a storage module 4. The voice acquisition module 1 is responsible for collecting the call-response voices of the operators after completing the test; this module is a crucial entry point for the entire recorder to acquire information. The voice recognition module 2 is connected to the voice acquisition module 1 and is used to recognize call-response voices containing test item numbers or names and generate corresponding control signals. There are multiple indicator lights 8, each corresponding to a locomotive calibration item, and different locomotive calibration items are distinguished by corresponding text labels. The light display control module 3 is connected to the voice recognition module 2 and is used to control the display status of the corresponding indicator lights 8 according to the control signals, thereby providing operators with intuitive test progress indications. The storage module 4 is connected to the voice recognition module 2 and is used to store the collected voice data for convenient subsequent querying and tracing. The operation button module 5 is used to trigger operations for various test completion statuses; it is connected to both the voice acquisition module 1 and the light display control module 3, allowing operators to control the recorder through button operation or voice commands.

[0024] In this embodiment, the voice acquisition module 1 is a microphone. The microphone converts sound signals (mechanical vibrations) into electrical signals and transmits these signals to other devices. Here, the microphone is connected to the audio input pin of the voice recognition module 2 via an audio transmission cable, transmitting the converted sound electrical signals to the voice recognition module 2. The voice acquisition module 1 can use a Knowles SPH0645LM4H-BH microphone, which features a high signal-to-noise ratio and wide frequency response, accurately capturing human voice commands. It also has a built-in analog signal conditioning circuit to suppress low-frequency vibration noise in the locomotive environment.

[0025] In this embodiment, the speech recognition module 2 is connected to the speech acquisition module 1. The speech recognition module 2 is used to recognize call-response speech containing the test project number or name and generate corresponding control signals. When the chip receives the speech signal from the speech acquisition module 1 through the audio input pin, the speech recognition module 2 performs signal preprocessing on the received speech signal. First, it uses a noise reduction algorithm to filter background noise through ambient noise suppression (ANS) and echo cancellation (AEC) techniques. Then, it performs frame segmentation processing, dividing the continuous speech stream into small frames of 20-40ms (e.g., 1024 sampling points per frame), with partial overlap between frames to preserve continuity. Finally, it performs feature extraction, the core step of which is to calculate Mel-frequency cepstral coefficients (MFCC) or filter bank (FBANK) features to simulate the human ear's perception of sound and preserve the key spectral information of the speech. After signal preprocessing, commands are recognized using a speech recognition algorithm. First, a deep learning-based acoustic model maps sound features to phonemes (the smallest units of speech). A lightweight model (such as TDNN+FSMN structure) can be used to reduce computational requirements. Then, a statistical probability (such as n-gram) or neural network (such as BERT) language model is used to predict the rationality of word sequences. Finally, a decoder connects the acoustic and language models to search for the optimal word sequence. If a preset command is recognized, a high-level control signal is output from its general-purpose I / O port. Speech recognition module 2 can use the Qiying Tailun CI1102B offline speech chip, which integrates a speech recognition algorithm and processor, allowing it to work independently without an external microcontroller. It also supports offline keyword recognition, with pre-programmed speech templates including project numbers, names, and commonly used commands. The system has certain noise suppression and speech enhancement capabilities, achieving a recognition rate of ≥92% in 75dB ambient noise. If recognition fails or the speech is unclear, the system can prompt the user to repeat the speech by flashing indicator light 8. It also supports manual recording or correction via operation button module 5 to ensure that every operation is accurately recorded.

[0026] In this embodiment, the indicator light control module 3 is connected to the voice recognition module 2. The indicator light control module 3 includes a relay 9 and is used to control the display status of the indicator lights 8 according to control signals. The indicator lights use red LEDs. Each LED corresponds to a hollowed-out Chinese character on the outer casing, and different characters are displayed to distinguish the verification items it represents. Multiple indicator lights 8 can use red LEDs, and each indicator light 8 corresponds to a verification item name on the outer casing to distinguish the verification items represented by different indicator lights 8. The display status of the LEDs can also distinguish the completion status of the locomotive verification items: when the LED is constantly lit, it indicates that the locomotive verification has been completed; when the LED is off, it indicates that the locomotive verification has not yet started. The relay 9 is used to connect or disconnect the circuit of the corresponding indicator light 8 according to control signals. The relay 9 can be an Omron G6B-1174P-DC5 model relay. The control signal output by the voice recognition module 2 is connected to the coil of the relay 9. When the control signal is high, the coil of relay 9 is energized, and its normally open contact closes, thereby connecting the power supply circuit of the corresponding indicator light 8, causing the LED light in that circuit to change from an off state to a constantly lit state; when the control signal is low, the coil of relay 9 is de-energized, the contact opens, disconnecting the circuit of indicator light 8, causing the LED light in that circuit to turn off, thus realizing the direct control of the display status of indicator light 8 through the on and off of the circuit.

[0027] In this embodiment, storage module 4 is connected to voice recognition module 2, and storage module 4 is used to store call-response voice. When voice recognition module 2 recognizes the call-response voice, it outputs a control signal and writes the collected raw voice data or the compressed audio file to a specific address in the storage chip for storage, thereby realizing the voice storage and playback function. Storage module 4 not only stores the raw voice data, but also adds metadata such as timestamp, project number, and operation type to each voice segment, forming a structured log file. Users can query the history of a specific project through the operation button module 5, or browse the status of all completed projects through the main display screen 10. Data can be exported via USB interface for easy subsequent analysis and auditing. Storage module 4 is a high-capacity flash memory storage chip with data protection function. The storage chip can use hardware encryption chips or software algorithms to encrypt the stored data, providing data protection function. The high-capacity storage chip can store a large amount of voice data to meet the needs of long-term experimental recording; the data encryption function can effectively prevent the stored voice data from being lost or illegally tampered with, ensuring the security and reliability of the data. Storage module 4 can be a Winbond W25Q128JVSIQ model storage module. This model has a hardware write protection pin to prevent accidental erasure, supports AES-256 encryption, and has an erase / write life of 100,000 times, meeting the 10-year storage requirement of 200 verification records per day.

[0028] In this embodiment, the vehicle-mounted locomotive calibration recorder also includes an operation button module 5. The operation button module 5 is connected to the voice acquisition module 1, the light display control module 3, and the storage module 4. The operation button module 5 includes a confirmation button, a reset button, and a query button. The operation buttons are located in easily accessible positions on the recorder housing 6. The confirmation button confirms the completion of the current test and triggers voice acquisition and light display control. After completing a test, the operator presses the confirmation button, and the recorder begins acquiring voice and updating the light display. The reset button resets the recorder's state in case of test abnormalities, such as misoperation or equipment malfunction. Pressing the reset button restores the recorder to its initial state. The query button queries the records of completed tests, allowing operators to easily view previous test records. The operation button module 5 can use a C&K SS12GL microswitch, which employs a silicone-sealed button (IP65) for dust and spray protection, and provides force feedback of 2.4N±10% to prevent accidental activation.

[0029] In this embodiment, the vehicle-mounted vehicle calibration recorder also includes a power module 7, which supplies power to the voice acquisition module 1, voice recognition module 2, light display control module 3, storage module 4, and operation button module 5. The power module 7 uses a built-in battery that can be charged via the vehicle's power supply and is equipped with overcharge protection and undervoltage protection circuits to ensure the safe and stable operation of the core components. Both the overcharge and undervoltage protection circuits utilize existing products. The overcharge protection circuit monitors the input voltage in real time. When an abnormally high voltage is detected and exceeds a preset safety threshold, the protection circuit will respond quickly in extreme events, cutting off power to subsequent circuits through internal switching devices, effectively preventing high-voltage surges from damaging other electronic components. The undervoltage protection circuit also continuously monitors the input voltage. When the voltage drops below the minimum operating threshold due to battery depletion or poor contact, the circuit will actively lock the system into a safety lock or shutdown state, preventing logical errors, data loss, or unpredictable behavior that may occur when electronic components operate under non-standard low voltage conditions. The overcharge protection circuit and the undervoltage protection circuit work together to form a double safety guarantee at the power input terminal. All protection actions are executed automatically without user intervention. When the input voltage returns to the normal range, the system will automatically or manually restart to resume normal operation.

[0030] In this embodiment, the vehicle-mounted locomotive calibration recorder also includes a housing 6, which is made of fire-resistant and impact-resistant engineering materials and has good heat dissipation performance. The voice acquisition module 1, voice recognition module 2, indicator control module 3, storage module 4, operation button module 5, and power module 7 are all housed within the housing 6. The surface of the housing 6 has easily identifiable button markings, and a main display screen 10 for displaying calibration records is located above the panel. The main display screen 10 can be a small LCD dot matrix screen and is used to display the current calibration item number, system status, or operation prompts. Indicator lights 8 are located below the main display screen 10 to facilitate accurate operation and recognition by operators in complex working environments. A microphone pickup hole 11 is also provided in the lower right corner of the panel, inside which a high-sensitivity microphone is placed for collecting user call response voices. A power display screen 12, a power switch 13, and a charging interface 14 are sequentially arranged on the side of the housing 6. The power display screen 12 can be a short-code LCD screen, used to display the remaining percentage of the battery power in the power module 7 in real time. The power switch 13 can be a self-locking toggle switch, used to control the overall power supply of the entire recorder. The charging port 14 can be a USB Type-C interface, used to connect an external power source to charge the built-in battery. Anti-slip pads are attached to the four corners of the base of the outer casing 6, which serve to prevent slipping and absorb shock when the recorder is placed on the locomotive's control panel.

[0031] In practical use, after completing each verification item, the operator confirms via voice or button. The voice acquisition module 1 collects voice signals in real time and transmits them to the voice recognition module 2 for command recognition. If a preset verification item number or name is recognized, the voice recognition module 2 sends a control signal to the indicator control module 3, driving the corresponding relay 9 to activate and illuminate or change the state of the corresponding indicator light 8. Simultaneously, the voice data is written to the storage module 4 in real time, forming an unalterable work record. The entire process requires no manual intervention, achieving full automation of voice guidance, status feedback, and data recording. The operator conducts subsequent tests based on the indicator light status until all indicator lights 8 are illuminated, indicating that all test items have been completed. During the test, if it is necessary to view previous test records, the query button can be pressed at any time; if an abnormality occurs, the reset button can be pressed for handling. Taking the locomotive braking system verification as an example: after completing the braking test, the operator says 'Braking test complete' or presses the confirmation button. The recorder recognizes the voice, illuminates the 'Braking' indicator light 8, and records the voice segment. If a test is interrupted for any reason, the indicator light status of that test item can be reset by pressing the reset button. The system will also record the interruption event for easy tracing later.

[0032] Through the above design and implementation, this utility model not only automates voice guidance and status feedback in terms of functionality, but also comprehensively optimizes reliability, environmental adaptability and data management, making it suitable for various electric locomotive calibration scenarios and significantly improving work efficiency and data reliability.

[0033] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An on-board locomotive verification recorder, comprising: include: Voice acquisition module (1), the voice acquisition module (1) is used to acquire the call and response voice of the operator; The voice recognition module (2) is connected to the voice acquisition module (1). The voice recognition module (2) is used to recognize the call response voice containing the test project number or name and generate the corresponding control signal. Indicator lights (8), there are multiple indicator lights (8), each indicator light (8) corresponds to a locomotive inspection item, and different locomotive inspection items are distinguished by corresponding text labels; The light display control module (3) is connected to the voice recognition module (2). The light display control module (3) is used to control the display status of the corresponding indicator light (8) according to the control signal. The storage module (4) is connected to the voice recognition module (2) and is used to store the call response voice.

2. The vehicle-mounted locomotive calibration recorder according to claim 1, characterized in that: The light display control module (3) includes a relay (9), which is used to connect or disconnect the circuit of the corresponding indicator light (8) according to the control signal.

3. The vehicle-mounted locomotive calibration recorder according to claim 2, characterized in that: The indicator light (8) is an LED light. The status of the indicator light (8) includes always on, off, or flashing, and the completion status of the locomotive inspection items can be distinguished by the status of the indicator light (8).

4. The vehicle-mounted locomotive calibration recorder according to claim 1, characterized in that: The vehicle-mounted locomotive calibration recorder also includes an operation button module (5), which is connected to the voice acquisition module (1), the operation button module (5) is also connected to the light display control module (3), and the operation button module (5) is also connected to the storage module (4). The operation button module (5) is used to manually trigger voice acquisition, light display status switching, and data query.

5. The vehicle-mounted locomotive calibration recorder according to claim 1, characterized in that: The vehicle-mounted locomotive calibration recorder also includes a housing (6), which is made of fireproof and impact-resistant engineering materials. The voice acquisition module (1), voice recognition module (2), light display control module (3), storage module (4) and operation button module (5) are all located inside the housing (6).

6. The vehicle-mounted locomotive calibration recorder according to claim 5, characterized in that: The outer casing (6) has text markings corresponding to the indicator light (8) on its surface, and the outer casing (6) also has text markings corresponding to the operation button module (5) on its surface.

7. The vehicle-mounted locomotive calibration recorder according to claim 5, characterized in that: The vehicle-mounted locomotive calibration recorder also includes a power module (7), which is located inside the housing (6). The power module (7) is connected to the voice acquisition module (1), the voice recognition module (2), the light display control module (3), the storage module (4), and the operation button module (5). The power module (7) is used to supply power to each module. The power module (7) is equipped with an overcharge protection circuit and an undervoltage protection circuit.

8. The vehicle-mounted locomotive calibration recorder according to claim 1, characterized in that: The storage module (4) is a flash memory chip with data protection function.

9. The vehicle-mounted locomotive calibration recorder according to claim 1, characterized in that: The voice acquisition module (1) is a high-sensitivity microphone.

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