An electrical short circuit fault audio signal analog acquisition device
By designing an audio signal simulation acquisition device for electrical short circuit faults, a stepper motor slide and insulated clamps are used to simulate electrical short circuits, collect and store audio signals from the fire scene, solve the problem of difficult audio information collection in fire investigations, and improve the effectiveness and accuracy of audio information.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN FIRE SCI & TECH RES INST OF MEM
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-07
AI Technical Summary
In existing technologies, it is difficult to collect audio information at fire scenes, which leads to insufficient use of audio information in fire investigations and is prone to misjudgment. Video surveillance has limited perspective and audio analysis relies on human experience, and there is a lack of standardized audio data.
Design an audio signal simulation acquisition device for electrical short circuit faults. The device uses a stepper motor slide and insulated clamps to simulate electrical short circuit faults. Combined with an audio acquisition module and a variable load, it acquires and stores the sound signal of the short circuit fault. Safety and noise isolation are ensured by an air switch and a rotary switch.
It enables efficient simulation and storage of electrical short-circuit fault sounds, improves the utilization rate of audio information in fire investigations, is easy to operate and safe and reliable, and reduces the risk of human error.
Smart Images
Figure CN224471824U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fire accident investigation technology, and in particular relates to an audio signal simulation acquisition device for electrical short circuit faults. Background Technology
[0002] Currently, video image analysis has become an indispensable technical means in fire accident investigations. After a fire occurs, it is usually necessary to analyze and judge the surveillance videos extracted from the vicinity of the fire site to determine the fire area and ignition source, etc. However, under the current technical conditions, due to the limited viewing angle of some video surveillance, there are large "blind spots," making it impossible to comprehensively and fully obtain fire information such as the fire location, burning materials, and ignition source. In actual investigations, the video surveillance recordings extracted from the scene often contain audio information. Audio information has the characteristics of being resistant to obstruction and penetrating, and can record a series of unique sound information of the fire occurrence and development process from all angles, such as the sound emitted by electrical short circuits. However, under the current technical conditions, the analysis and judgment of abnormal audio at the fire scene mainly relies on personal experience, which cannot be widely disseminated and applied. In addition, human judgment is prone to negligence and misjudgment, limiting the effectiveness of audio as relevant evidence in fire investigations.
[0003] To further enhance the use of audio information in fire investigations, a large amount of standard audio data is needed for further research. Under current technological conditions, there are problems such as a lack of audio information on electrical faults and difficulties in collecting relevant audio information. Utility Model Content
[0004] In view of this, the present invention aims to overcome the defects in the prior art and proposes an audio signal simulation acquisition device for electrical short circuit faults.
[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0006] An audio signal simulation acquisition device for electrical short circuit faults includes: a stepper motor slide; a first insulating clamp fixedly installed on one side of the stepper motor slide, and a second insulating clamp installed on the slider of the stepper motor slide. The neutral wire end is held on the first insulating clamp, and the live wire end is held on the second insulating clamp. When the slider moves, the neutral wire end and the live wire end can contact or separate.
[0007] An audio acquisition module is installed adjacent to the stepper motor slide. The audio acquisition module is used to collect and store the sound emitted when the neutral wire and the live wire are in contact, indicating a short circuit. A variable load is connected between the neutral wire and the live wire. The variable load is used to shunt the current when the neutral wire and the live wire are in contact.
[0008] In one embodiment of this utility model, an air switch is connected in series on the live wire connected to the live wire end, and a sound shielding box for noise isolation is provided on the outside of the air switch.
[0009] In one embodiment of this utility model, a rotary switch is connected in series on the live wire connected to the live wire end.
[0010] In one embodiment of this utility model, the stepper motor slide is connected to the motor controller, and the control module is connected to the motor controller. The control module controls the movement of the slide through the motor controller.
[0011] In one embodiment of this utility model, a set of normally open switches of a contactor connected in series on the live wire is connected to the live wire terminal. The control module is connected to the control terminal of the contactor, and the control module controls the on / off state of the live wire terminal through the contactor.
[0012] In one embodiment of this invention, the variable load is a variable resistance box.
[0013] In one embodiment of this utility model, the audio acquisition module includes a microphone.
[0014] In one embodiment of this utility model, the audio acquisition module includes an audio storage device, and the microphone is connected to the audio storage device.
[0015] Compared with the prior art, this utility model has the following advantages:
[0016] This utility model discloses an audio signal simulation and acquisition device for electrical short circuit faults, comprising: a stepper motor slide; a first insulating clamp fixedly mounted on one side of the stepper motor slide, and a second insulating clamp mounted on the slider of the stepper motor slide. The first insulating clamp holds the neutral wire end, and the second insulating clamp holds the live wire end. When the slider moves, the neutral wire end and the live wire end can contact or separate; an audio acquisition module is located adjacent to the stepper motor slide. The audio acquisition module is used to acquire and store the sound emitted when the neutral wire end contacts the live wire end, indicating a short circuit. This utility model discloses an audio signal simulation and acquisition device for electrical short circuit faults, which can fully simulate and store the sound emitted by electrical short circuit faults. It has the advantages of good simulation effect, convenient operation, and safe and reliable use. Attached Figure Description
[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0018] In the attached diagram:
[0019] Figure 1This is a schematic diagram of the structure of an audio signal simulation acquisition device for electrical short circuit faults according to an embodiment of the present invention.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1-Control module; 2-Variable load; 3-Stepper motor slide; 31-First insulated clamp; 32-Second insulated clamp; 4-Motor controller; 5-Audio acquisition module; 6-Sound shielding box; 61-Air switch; 62-Rotary switch; 7-Contactor. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] In the description of this utility model, it should be further noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] To further enhance the use of audio information in fire investigations, a large amount of standard audio data is needed for further research. However, under current technological conditions, there is a lack of audio information on electrical faults and difficulties in collecting relevant audio information. This invention discloses an audio signal simulation and acquisition device for electrical short-circuit faults. It can fully simulate and store the sounds emitted by electrical short-circuit faults, offering advantages such as good simulation effects, convenient operation, and safe and reliable use.
[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] like Figure 1 As shown, an audio signal simulation acquisition device for electrical short circuit faults includes: a stepper motor slide 3; a first insulating clamp 31 fixedly installed on one side of the stepper motor slide 3, and a second insulating clamp 32 installed on the slider of the stepper motor slide 3. The neutral wire end is held on the first insulating clamp 31, and the live wire end is held on the second insulating clamp 32. When the slider moves, the neutral wire end and the live wire end can contact or separate.
[0029] An audio acquisition module 5 is provided at the adjacent position of the stepper motor slide 3. The audio acquisition module 5 is used to collect and store the sound emitted when the neutral wire terminal is in contact with the live wire terminal and a short circuit occurs. A variable load 2 is connected between the neutral wire terminal and the live wire terminal. The variable load 2 is used to shunt the current when the neutral wire terminal is in contact with the live wire terminal.
[0030] In the practical application of this technical solution, the operator first confirms that the live wire is not energized, then installs the live wire end on the second insulating clamp 32 and the neutral wire end on the first insulating clamp 31. At this time, the live wire end and the neutral wire end are set opposite each other, maintaining a certain distance. Next, the variable load 2 is set to the required load level, the power supply to the live wire end is turned on, and the slider of the stepper motor slide 3 is controlled to move. At this time, the second insulating clamp 32 driven by the slider moves towards the fixed first insulating clamp 31 until the neutral wire end contacts the live wire end, a short circuit occurs and a sound is emitted. At this time, the audio acquisition module 5 collects the sound emitted by the short circuit and stores it.
[0031] After the audio acquisition module 5 completes the acquisition and recording of the electrical short circuit fault sound, it controls the slider of the stepper motor slide 3 to move in the opposite direction. At this time, the second insulating clamp 32 driven by the slider moves away from the fixed first insulating clamp 31 until the neutral wire end and the live wire end are separated.
[0032] In this embodiment, as Figure 1 As shown, since the variable load 2 is connected between the neutral wire and the live wire, when the neutral wire and the live wire come into contact and are in a short circuit state, part of the short circuit is diverted by the variable load 2, ensuring the overall safety of the device.
[0033] In another embodiment of this utility model, such as Figure 1 As shown, an air switch 61 is connected in series on the live wire connected to the live wire end, and a sound shielding box 6 for noise isolation is provided on the outside of the air switch 61.
[0034] In this embodiment, when the neutral wire terminal comes into contact with the live wire terminal and a short circuit occurs, the air switch 61 will trip automatically, and the live wire terminal will be de-energized. Since the air switch 61 is equipped with a sound shielding box 6 for noise isolation, the sound of the air switch 61 tripping will be isolated and will not be recorded in the audio acquisition module 5, thus improving the quality of audio acquisition.
[0035] In another embodiment of this utility model, such as Figure 1 As shown, a rotary switch 62 is connected in series on the live wire connected to the live wire end.
[0036] In this embodiment, both the air switch 61 and the rotary switch 62 are connected in series on the live wire, thus providing dual safety control and protection for the power supply to the live wire.
[0037] In another embodiment of this utility model, such as Figure 1 As shown, the stepper motor slide 3 is connected to the motor controller 4, and the control module 1 is connected to the motor controller 4. The control module 1 controls the movement of the slide through the motor controller 4.
[0038] In this embodiment, the control module 1 can be a PLC controller with a display screen or an industrial computer. The motor controller 4 controls the rotation of the stepper motor of the stepper motor slide 3, that is, controls the direction of movement of the slider.
[0039] In another embodiment of this utility model, such as Figure 1 As shown, a set of normally open switches of contactor 7 are connected in series on the live wire. Control module 1 is connected to the control terminal of contactor 7. Control module 1 controls the power supply to and from the live wire through contactor 7.
[0040] In this embodiment, the contactor 7 enables the control module 1 to control the on / off state of the power supply at the live wire end.
[0041] In another embodiment of this utility model, such as Figure 1 As shown, variable load 2 is a variable resistance box.
[0042] In this embodiment, the variable load 2 is used to shunt the short-circuit current when the neutral wire terminal is in contact with the live wire terminal. Different load settings can also be used to simulate different degrees of electrical short-circuit faults by allowing different short-circuit currents to pass through the neutral wire terminal and the live wire terminal during an electrical fault short circuit.
[0043] In another embodiment of this utility model, such as Figure 1 As shown, the audio acquisition module 5 includes a microphone.
[0044] In this embodiment, a microphone is used to collect the sound emitted when the neutral wire and the live wire are in contact and a short circuit fault occurs.
[0045] In this embodiment, the audio acquisition module 5 includes an audio storage device, and the microphone is connected to the audio storage device.
[0046] In this device, such as Figure 1 As shown, the main circuit is controlled by an air switch 61 and a rotary switch 62, which enables the main circuit to be switched on and off. The rated current value of the actual working condition to be simulated is adjusted by a variable load 2 with a variable load value. The control module 1 controls the forward and reverse movement of the stepper motor by outputting control signals, which causes the slide of the stepper motor slide 3 to move. The first insulating clamp 31 and the second insulating clamp 32 realize the short-circuit contact and separation of the simulated circuit. At the moment of contact, a corresponding short-circuit fault audio sound will be generated. The audio acquisition module 5 includes a microphone and an audio storage device. The microphone is placed next to the stepper motor slide 3 to collect the sound signal of the short-circuit fault to be simulated. The audio storage device stores the collected sound signal.
[0047] The embodiments of the present invention have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, various substitutions and modifications can be made by those skilled in the art, and all such substitutions and modifications should fall within the scope of the present invention.
Claims
1. A device for simulating and acquiring audio signals of electrical short-circuit faults, characterized in that, include: Stepper motor slide (3); A first insulating clamp (31) is fixedly installed on one side of the stepper motor slide (3), and a second insulating clamp (32) is installed on the slider of the stepper motor slide (3). The neutral wire end is held on the first insulating clamp (31), and the live wire end is held on the second insulating clamp (32). When the slider moves, the neutral wire end and the live wire end can contact or separate. An audio acquisition module (5) is provided at an adjacent position of the stepper motor slide (3). The audio acquisition module (5) is used to collect and store the sound emitted when the neutral wire terminal is in contact with the live wire terminal and a short circuit occurs. A variable load (2) is connected between the neutral wire terminal and the live wire terminal. The variable load (2) is used to shunt the current when the neutral wire terminal is in contact with the live wire terminal.
2. The electrical short-circuit fault audio signal simulation acquisition device according to claim 1, characterized in that, An air switch (61) is connected in series on the live wire connected to the live wire end, and a sound shielding box (6) for noise isolation is provided on the outside of the air switch (61).
3. The electrical short-circuit fault audio signal simulation acquisition device according to claim 1, characterized in that, A rotary switch (62) is connected in series on the live wire connected to the live wire end.
4. The electrical short-circuit fault audio signal simulation acquisition device according to claim 1, characterized in that, The stepper motor slide (3) is connected to the motor controller (4), and the control module (1) is connected to the motor controller (4). The control module (1) controls the movement of the slide through the motor controller (4).
5. The electrical short-circuit fault audio signal simulation acquisition device according to claim 4, characterized in that, A set of normally open switches of a contactor (7) connected in series on the live wire is connected to the live wire terminal. The control module (1) is connected to the control terminal of the contactor (7). The control module (1) controls the power supply to and from the live wire terminal through the contactor (7).
6. The electrical short-circuit fault audio signal simulation acquisition device according to claim 1, characterized in that, The variable load (2) is a variable resistance box.
7. The electrical short-circuit fault audio signal simulation acquisition device according to claim 1, characterized in that, The audio acquisition module (5) includes a microphone.
8. The electrical short-circuit fault audio signal simulation acquisition device according to claim 7, characterized in that, The audio acquisition module (5) includes an audio storage device, and the microphone is connected to the audio storage device.