Fault monitoring device for equipment voiceprint analysis
By combining a multi-channel pickup unit array and signal processing circuit, the stability and adaptability of the equipment acoustic fault monitoring device in complex environments are solved, and the accurate identification and control of fault noise are achieved.
Patent Information
- Application Number
- CN202423323460.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing equipment acoustic fault monitoring devices lack stability and adaptability in complex electromagnetic environments and high noise levels, making it difficult to effectively identify equipment faults.
A multi-channel pickup unit ring array is adopted, combined with a linear amplifier circuit, a hysteresis comparator and a sampling integration circuit. The electromagnetic shielding cover improves the anti-interference ability, and the hysteresis comparator is used for binarization and frequency statistics. Combined with the sampling integration circuit, the noise signal is converted into a DC voltage-like signal, so as to achieve accurate identification of fault noise.
It improves the accuracy of fault noise identification and system reliability in complex environments, provides a stable platform for fault analysis and control, and is adaptable to various noise scenarios.
Smart Images
Figure CN223928437U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of equipment fault monitoring, and specifically relates to a fault monitoring device for equipment voiceprint analysis. BACKGROUND
[0002] The operation of equipment involves sensing monitoring of temperature, pressure, speed and other aspects, but in many cases, it is not necessary to grasp every parameter of equipment operation in real time, and in the operation process of equipment, the running state of equipment and whether the running state of equipment is normal can be judged only through the change of sound. The current voiceprint fault judgment has several problems: for example, the feedback control of the equipment itself is not designed completely, which is not suitable for complex electromagnetic environment and noisy environment application, for example, the equipment with several motors and often in intermittent working state, the electromagnetic interference generated may affect the stable use of the monitoring device, and the noisy environment limits the performance and installation conditions of the monitoring device; therefore, the current voiceprint recognition device has the limitation of universality, and it is necessary to conduct in-depth research to solve the above problems. SUMMARY
[0003] In view of the deficiencies in the prior art, the utility model provides a fault monitoring device for equipment voiceprint analysis to achieve the purpose of convenient and stable use.
[0004] According to the embodiment of the utility model, a fault monitoring device for equipment voiceprint analysis is provided, which comprises a shell, a pickup unit, a linear amplification circuit, a signal processing unit, a control unit, a feedback unit and a power supply unit are arranged in the shell; the signal processing unit comprises a filter circuit, an analog-to-digital conversion circuit and an audio processing unit; the signal obtained by the pickup unit is transmitted to the signal processing unit after being linearly amplified by the linear amplification circuit, the output of the signal processing unit is connected with the input of the control unit, and the control unit is electrically connected with the feedback unit; at least one of the linear amplification circuit, the signal processing unit and the control unit is covered with an electromagnetic shielding cover; the feedback unit at least comprises one of a communication unit, an interaction unit and a digital signal output unit; the pickup unit is multiple and is arranged in an array, the number of corresponding linear amplification circuits is consistent with one, any pickup unit is independently connected with one linear amplification circuit, and a plurality of independent audio signal channels are formed; the power supply unit is used for providing the required power consumption of the electric components in the shell.
[0005] Further, the signal processing unit further comprises a hysteresis comparator, the input of the hysteresis comparator is connected with the output of the linear amplification circuit, and the output of the hysteresis comparator is connected with the input of the control unit.
[0006] Further, the signal processing unit further comprises a sampling integration circuit; the sampling integration circuit comprises an integration circuit, an electrically controlled switch and a multi-vibrator, the switch acting end of the electrically controlled switch is used for connecting the output end of the linear amplification circuit and the input end of the integration circuit, the switch acting end of the electrically controlled switch is connected with the output end of the multi-vibrator; the output of the sampling integration circuit is connected with the input of the hysteresis comparator.
[0007] The independent audio signal channel formed by the multi-path pickup unit and the linear amplification circuit, and the pickup units distributed in the annular array are beneficial to establish audio signals with multiple different azimuth differences, and provide a better hardware platform support for realizing sound positioning, which can simplify the positioning algorithm, is convenient for setting different types of pickup units, improves the accuracy of abnormal sound identification, improves the reliability of the system, and is beneficial to providing accurate guidance for the fault noise area in a complex environment. In combination with the design of the hysteresis comparator, it is beneficial to binaryzation of the fault noise, thereby facilitating the frequency statistics of the control unit. In combination with the design of the sampling integration circuit, the multi-vibrator sends out a square wave to control the periodic conduction and shutdown of the electrically controlled switch, when the electrically controlled switch is turned on, the signal transmitted by the linear amplification circuit passes through the integration circuit, the noise signal is converted into a slowly changing direct current voltage output in the sampling period of the conduction of the electrically controlled switch, and in combination with the parameter design of the hysteresis comparator, an analysis basis is provided for realizing the fault noise signal exceeding or being less than the set threshold.
[0008] Compared with the prior art, the utility model has the advantages of being suitable for various scene applications of mechanical noise and power noise, good anti-interference, and providing a good platform support for fault analysis, guidance and control. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is a principle schematic view of one embodiment of the utility model;
[0010] Figure 2 It is a principle schematic view of another embodiment of the utility model. DETAILED DESCRIPTION
[0011] The technical scheme of the utility model will be further described below in combination with the drawings and embodiments.
[0012] The embodiment provides a fault monitoring device for device voiceprint analysis, which comprises a shell, and the shell is internally provided with a pickup unit, a linear amplification circuit, a signal processing unit, a control unit, a feedback unit and a power supply unit; as Figure 1As shown, the signal processing unit comprises a filter circuit, an analog-to-digital conversion circuit and an audio processing unit; the signal obtained by the pickup unit is transmitted to the signal processing unit after linear amplification, the output of the signal processing unit is connected with the input of the control unit, and the control unit is electrically connected with the feedback unit; the feedback unit at least comprises one of a communication unit, an interaction unit and a digital signal output unit; the communication unit is in communication connection with the control unit, so that the control unit can communicate with external devices, the communication unit can be wired communication such as serial communication, or wireless communication such as WIFI, 4G module, etc.; the interaction unit is in communication connection with the control unit, and is assembled on the surface of the shell as needed, such as a display, a touch screen, etc., so as to facilitate the operator to view or control operation as needed; the digital signal output unit can be a digital signal driver, the input of the digital signal driver is connected with the output of the controller, and the output is used to connect with the external digital signal triggered device or the external control unit, so that the control unit can transmit signals farther through the digital signal driver. At least one of the linear amplification circuit, the signal processing unit and the control unit is covered with an electromagnetic shielding cover; when the linear amplification circuit, the signal processing unit and the control unit are installed on the circuit board, the electromagnetic shielding cover pad can be correspondingly arranged on the circuit board, the bottom layer of the circuit board can be covered with copper in a large area, the electromagnetic shielding cover can be made of copper or aluminum or a metal or alloy with good conductivity, and is welded on the electromagnetic shielding cover pad; the pickup unit is multiple and arranged in a ring array (it should be noted that, Figure 1 The circuit logic relationship is expressed, only three pickup units are shown, and the number is not limited), the number of corresponding linear amplification circuits is consistent with one, any pickup unit is independently connected with one linear amplification circuit, and a plurality of independent audio signal channels are formed; the power supply unit is used for providing the required power for the electrical components in the shell. The power supply unit is a rechargeable battery, which is beneficial to portable installation and use, and can further comprise a charging protection board and a charging socket, the charging socket is connected with the charging protection board, and the rechargeable battery is provided with charging protection, so as to realize plug-in and long-time work. The audio processing unit comprises a DSP chip or an audio decoding chip.
[0013] The signal processing unit further comprises a hysteresis comparator, the input of the hysteresis comparator is connected with the output of the linear amplification circuit, and the output of the hysteresis comparator is connected with the input of the control unit. The threshold value of the hysteresis comparator is set as the prior art, and the reference voltage is converted by the power supply unit. When the fault noise difference of the application scene is relatively large, such as the sound corresponding to the abnormal equipment is obviously higher or lower than the normal sound, the hysteresis comparator can judge the size and output high or low voltage to the control unit, and the control unit can judge the fault condition of the equipment by combining the frequency.
[0014] In another embodiment, the signal processing unit further includes a sampling integration circuit; the sampling integration circuit includes an integration circuit, an electronically controlled switch, and a multivibrator. The switching terminal of the electronically controlled switch is used to connect the output terminal of the linear amplifier circuit to the input terminal of the integration circuit, and the switching terminal of the electronically controlled switch is connected to the output terminal of the multivibrator; the output of the sampling integration circuit is connected to the input of the hysteresis comparator. The electronically controlled switch can be an N-channel MOSFET. The multivibrator emits a square wave to control the periodic switching on and off of the electronically controlled switch. When the switch is on, the signal transmitted by the linear amplifier circuit passes through the integration circuit, converting the noise signal into a gently changing near-DC voltage output during the sampling period of the electronically controlled switch's conduction. Combined with the parameter design of the hysteresis comparator, this provides an analytical basis for detecting fault noise signals exceeding or falling below a set threshold.
[0015] As a preferred embodiment, it also includes a recording chip and a loudspeaker, wherein the input of the recording chip is directly connected to the output of a linear amplifier circuit or connected after passing through a filter circuit, such as... Figure 2 As shown, in this embodiment, the circuit is connected after filtering; the control terminal of the recording chip is connected to the output of the control unit; the output of the recording chip is electrically connected to the loudspeaker. When the hysteresis comparator outputs a signal, the control unit can trigger the recording unit to record, facilitating the preservation of recording segments as a basis for analysis by maintenance personnel.
[0016] As a preferred embodiment, it also includes a clock chip, which is communicatively connected to the control unit to facilitate time control or time information retention by the control unit.
[0017] As a preferred approach, at least two filtering units have different filtering frequency ranges. Different filtering ranges facilitate targeted processing of noise in different frequency bands and also help achieve effective monitoring in complex noisy environments.
[0018] As a preferred embodiment, it also includes a magnetic suction device, which is fixed inside the housing to facilitate external fixation of the monitoring device.
[0019] As a preferred embodiment, the system also includes a drive unit, the control unit being connected to the input of the drive unit to enable the control unit to drive external power components.
[0020] As a preferred embodiment, the device also includes a power device, which includes at least one of a motor, an electronically controlled switch, and a light source device.
[0021] Through the combined application of the driving unit and the power device, the monitoring device can be connected with an external execution device or a control device, such as realizing switch shutdown after fault discovery, and automation is improved. Compared with the prior art, the utility model is suitable for various scene applications of mechanical noise and power noise, has good anti-interference performance, and can provide a good platform support for fault analysis, guidance and control implementation.
[0022] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and they should be covered in the scope of the claims of the utility model.
Claims
1. A fault monitoring apparatus for device voiceprint analysis, characterized by: The shell comprises a pickup unit, a linear amplification circuit, a signal processing unit, a control unit, a feedback unit and a power supply unit; the signal processing unit comprises a filter circuit, an analog-to-digital conversion circuit and an audio processing unit; the signal obtained by the pickup unit is transmitted to the signal processing unit after being linearly amplified by the linear amplification circuit, the output of the signal processing unit is connected to the input of the control unit, and the control unit is electrically connected to the feedback unit; at least one of the linear amplification circuit, the signal processing unit and the control unit is covered with an electromagnetic shielding cover; the feedback unit comprises at least one of a communication unit, an interaction unit and a digital signal output unit; the pickup unit is multiple and arranged in a ring array, the number of corresponding linear amplification circuits is consistent, any pickup unit is independently connected to one linear amplification circuit, and a plurality of independent audio signal channels are formed; the power supply unit is used to provide the required power for the power components in the shell.
2. A fault monitoring device for device voiceprint analysis as claimed in claim 1, wherein: The signal processing unit further comprises a hysteresis comparator, the input of the hysteresis comparator is connected to the output of the linear amplification circuit, and the output of the hysteresis comparator is connected to the input of the control unit.
3. A fault monitoring device for device voiceprint analysis as claimed in claim 2, wherein: The signal processing unit further comprises a sampling integration circuit; the sampling integration circuit comprises an integration circuit, an electrically controlled switch and a multivibrator, the switch acting end of the electrically controlled switch is used to connect the output end of the linear amplification circuit and the input end of the integration circuit, and the switch acting end of the electrically controlled switch is connected to the output end of the multivibrator; the output of the sampling integration circuit is connected to the input of the hysteresis comparator.
4. A fault monitoring device for device voiceprint analysis as claimed in claim 3, wherein: Further comprising a recording chip and a loudspeaker, the input of the recording chip is directly connected to the output of the linear amplification circuit or connected after the filter circuit, and the control end of the recording chip is connected to the output of the control unit; the output of the recording chip is electrically connected to the loudspeaker.
5. A fault monitoring device for device voiceprint analysis as recited in claim 1, wherein: Further comprising a clock chip, the clock chip is in communication connection with the control unit.
6. A fault monitoring device for device voiceprint analysis as recited in claim 1, wherein: The filter frequency ranges of the at least two filter units are different.
7. A fault monitoring device for device voiceprint analysis as recited in claim 1, wherein: Further comprising a magnetic attraction device, the magnetic attraction device is fixed in the shell to facilitate external fixation of the monitoring device.
8. A fault monitoring device for device voiceprint analysis as recited in claim 1, wherein: The audio processing unit comprises a DSP chip or an audio decoding chip.
9. A fault monitoring device for device voiceprint analysis as recited in claim 1, wherein: Further comprising a driving unit, the input of the driving unit is connected to the control unit to realize the driving of the external power components by the control unit.
10. A fault monitoring device for device voiceprint analysis as claimed in claim 9, wherein: Further comprising a power device, the power device comprises at least one of a motor, an electrically controlled switch and a light source device.