Remote sound acquisition and processing device

Abstract

The utility model discloses a remote sound acquisition and processing device, which comprises an on-site sound acquisition module and a remote sound receiving and processing module, on-site audio signals are directionally acquired through pickup equipment and are transmitted to the remote through an on-site radio interphone; the remote radio interphone receives and demodulates the signals, and divides the audio signals into two paths, one path is sent to the sound recording equipment for sound recording, the other path is sent to the audio signal level processing display unit, the normal audio signals on site are subjected to noise processing and converted into level signals, and the level signals are sent to the remote radio interphone; and on-site abnormal audios are amplified and are respectively displayed through the LED display equipment, and abnormal sound exceeding a preset amplitude is alarmed through the buzzer. The sound acquisition and processing device is simple to operate and easy to implement, and can acquire, store and analyze on-site audio signals of equipment in a steel workshop on the premise that normal operation of operators is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of audio transmission, in particular to a remote sound collection and processing device. Background Art

[0002] In modern industrial production, especially in heavy industries like steel, improving labor efficiency and intelligent control of on-site equipment are key to sustainable development. With the continuous advancement of centralized control center construction, on-site operation rooms are being centralized through automated control, allowing all operators to remotely operate equipment from a single room. As the operating environment changes, the collection of on-site equipment operating status must also be as accurate as possible to meet actual conditions. While video capture can be effectively addressed through high-definition industrial video capture systems, on-site sound capture has been a difficult problem, requiring urgent resolution.

[0003] Traditional sound collection methods, such as external microphones, often face the problem of mixed and difficult-to-distinguish sounds in complex industrial environments. The noise generated by multiple devices operating simultaneously interferes with each other, not only reducing the clarity of sound collection but also seriously disrupting the operating environment, affecting operators' concentration and judgment. Furthermore, prolonged work in noisy environments poses a potential threat to operators' hearing health. Another common solution is wearing headphones, but this approach also has numerous drawbacks. Prolonged use of headphones not only causes ear discomfort but can also damage hearing. Furthermore, headphones hinder direct communication between operators, reducing the efficiency of team collaboration.

[0004] In order to overcome the above technical difficulties, improve the clarity and accuracy of remote sound collection, and at the same time protect the health and work efficiency of operators, a new type of remote sound collection and processing device has been developed to accurately capture and separate the sound signals of target equipment in complex industrial environments, effectively suppress background noise and interference sounds, and provide operators with clear and recognizable sound information. It can provide strong support for the construction of centralized control centers in heavy industrial fields such as steel enterprises. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a remote sound collection and processing device, which collects on-site audio signals of equipment in a steel workshop without affecting the normal operation of operators, and stores the audio signals for later analysis.

[0006] The utility model adopts the following technical solution: a remote sound collection and processing device, comprising: an on-site sound collection module, a remote sound receiving and processing module;

[0007] The on-site sound collection module includes a sound pickup device and an on-site radio intercom; the on-site audio signal is directionally collected by the sound pickup device, and modulated into a radio frequency signal by the on-site radio intercom and transmitted to the remote site;

[0008] The remote sound receiving and processing module includes: a remote radio intercom, an earphone jack, a recording device, an audio signal level processing unit, a buzzer, and an LED display device; the remote radio intercom is used to receive radio frequency signals and perform signal demodulation, and then divide the demodulated on-site audio signals into two paths. One path is sent to the recording device for recording and used for on-site audio playback, and the other path is sent to the audio signal level processing and display unit and then divided into two paths. One path extracts normal on-site audio, performs noise processing and converts it into a level signal, and the other path extracts abnormal on-site audio signals and amplifies them. The signals are transmitted to the LED display device for display through corresponding level driving circuits, and abnormal sounds exceeding a preset amplitude are alarmed through the buzzer.

[0009] Furthermore, the radio intercom adopts a voice control mode or a normally open mode, and the transmission power selects a low power mode or a high power mode based on the distance.

[0010] Furthermore, the LED display device is an LED strip screen, including light-emitting diodes, which visually displays audio signals through an LED array, and has a highest-order retention function and a reset button, which is used to retain the high-order amplitude of abnormal sounds and clear them after the operator operates the reset button to reset them.

[0011] Furthermore, the audio signal level processing unit divides the received audio signal into two paths, one for the on-site normal audio processing circuit and the other for the on-site abnormal audio processing circuit, and processes the normal and abnormal audio respectively and displays them on the LED display device.

[0012] The normal audio processing circuit on site inputs the on-site audio into the level driving circuit, performs band-stop filtering on the recording, adjusts the audio level to the required level amplitude by adjusting the resistor, and detects and processes the on-site sound that is higher than normal.

[0013] The on-site abnormal audio processing circuit uses an active second-order high-impedance filter to filter out normal audio from the on-site audio signal, picks up the abnormal audio signal, sets the band-stop center frequency, amplifies the abnormal audio through an audio amplifier, displays it through another level drive circuit, and alarms through a buzzer.

[0014] Particularly, the level driving circuit driving IC is LM3915.

[0015] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0016] The utility model discloses a remote sound collection and processing device, which collects and transmits audio signals on site through a radio intercom, receives them remotely through the radio intercom and demodulates them through the headphone jack, sends one path to a recording device for recording for later analysis, and sends the other path to an audio signal level processing and display unit, distinguishes between normal audio on site and abnormal audio signals on site, displays them respectively through LED display devices, and alarms abnormal sounds through a buzzer. The utility model is simple to operate and easy to implement, and can collect audio signals on site of steel workshop equipment without affecting the normal operation of the operator, and store and analyze them at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural block diagram of the remote sound collection and processing device of the utility model;

[0018] Figure 2 This is the electrical schematic diagram of the audio signal level processing unit of the utility model;

[0019] Figure 3 This is the principle diagram of the active second-order high-impedance filter of the utility model;

[0020] Figure 4 This is a functional diagram of the remote operation room control panel according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In one embodiment of the present invention, based on the field equipment operation set implemented in a certain plate heat treatment production line, a remote sound collection and processing device is constructed to collect the sound of the field equipment operation. Figure 1 As shown, it includes: an on-site sound collection module and a remote sound receiving and processing module.

[0023] Specifically, the on-site sound collection module uses a radio walkie-talkie placed on-site, adjusts the power of the walkie-talkie to low power, uses a directional dynamic microphone as a pickup device, collects the on-site sound in a direction, and modulates it into a radio frequency signal through the radio walkie-talkie and sends it out.

[0024] Specifically, the remote sound receiving and processing module receives the radio frequency signal using a radio intercom in the remote operation room, demodulates it into an audio signal, and outputs it to the audio signal level processing unit through the headphone jack.

[0025] Furthermore, the collected audio signal is divided into two paths for processing, one path is sent to the recording device for recording, and the other path is sent to the audio signal level processing and display unit. After the audio signal level is processed, it is displayed through the light-emitting diodes in the LED display device.

[0026] In this embodiment, the audio signal level processing and display unit is divided into two paths for processing, one of which is a normal audio processing circuit on site, and the other is an abnormal audio processing circuit on site.

[0027] The normal audio processing circuit on site is mainly used to detect and process the sounds that are higher than normal on site, such as Figure 2 As shown, the live audio level is input into the level driving circuit and processed by U1-LM3915. The audio level is adjusted to the required level amplitude by adjusting the resistor R6. U1-LM3915 has multiple output pins, which converts the amplitude or level of the audio signal into a series of control signals. The LED array (LED1 to LED10) is driven by U2-74LS273. LED1-LED10 are audio level display light-emitting diodes to display the intensity or frequency of the audio signal, forming a visual dynamic audio display interface.

[0028] Figure 2 In the circuit, U3 is a buzzer that alerts users of high audio levels. U2-74LS273, D1, D2, and S1 form a high-level display latch. When the high-level audio signal disappears, the LED remains on and the buzzer continues to sound. S1 is a manual reset button. After the operator confirms the abnormality, they reset the LED display to prepare for the next reception.

[0029] The on-site abnormal audio processing circuit uses an active second-order high-impedance filter to process the on-site audio signal and filter out the current normal audio. When the device generates abnormal sound, the weak signal of the abnormal sound is amplified. Figure 3 As shown, the audio input enters the audio amplifier from IO1 through R1 and C1, and the amplification factor is adjusted by R4 and R5. R1, R2, R3, C1, C2, and C3 are used to set the band-stop center frequency as needed. After the audio is processed, it is sent to the Figure 2 The same circuit is processed.

[0030] It should be noted that in the audio signal level processing display unit, Figure 2 There are two partial level driving circuits, one in the normal audio processing circuit for normal audio processing, and the other in the field abnormal audio processing circuit for abnormal audio processing. The two partial level driving circuits work separately, and the results are displayed by the corresponding LED1-LED10 respectively.

[0031] During use, through noise processing, normal noise on site can be displayed at a lower amplitude, abnormal and loud sounds can be displayed at a higher amplitude, and abnormal sounds exceeding the preset amplitude will be alarmed through a buzzer. In addition, the highest bit retention function of the LED bar screen allows operators to reset the level display when a high amplitude is found, retrieve the recording file for re-listening, or analyze the recorded audio waveform.

[0032] Specifically, the remote operation room control panel, such as Figure 4 As shown, it is divided into two independent parts, one is the normal sound high voltage level, the other is the abnormal sound level, each part is divided into LED display part, warning sound alarm part and reset button.

[0033] During use, when the high-level buzzer on the device panel sounds, the operator notifies the equipment staff for confirmation. The operator then resets the high-level buzzer on the device panel and prepares for the next test. When the abnormal sound buzzer on the device panel sounds, the operator notifies the equipment staff for confirmation. The operator then resets the abnormal level buzzer on the device panel and prepares for the next test. At the same time, equipment maintenance personnel can retrieve previous recordings for analysis as needed.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A remote sound collection and processing device, characterized in that: include: On-site sound collection module, remote sound reception and processing module; The on-site sound collection module includes a sound pickup device and an on-site radio intercom; The on-site audio signal is collected directionally by the pickup device, modulated into a radio frequency signal by the on-site radio intercom, and transmitted to the remote location; The remote sound receiving and processing module includes: a remote radio intercom, an earphone jack, a recording device, an audio signal level processing unit, a buzzer, and an LED display device; The remote radio intercom receives the radio frequency signal, demodulates it through the headphone jack, and divides the demodulated on-site audio signal into two paths. One path is sent to the recording device for recording for on-site audio playback, and the other path is sent to the audio signal level processing and display unit and then divided into two paths. One path extracts the normal audio on-site, processes the noise and converts it into a level signal, and the other path extracts the abnormal audio signal on-site and amplifies it. It is transmitted to the LED display device for display through the corresponding level driving circuit, and the abnormal sound exceeding the preset amplitude is alarmed through the buzzer.

2. The remote sound collection and processing device according to claim 1, characterized in that: The radio intercom adopts a voice control mode or a normally open mode, and the transmission power selects a low power mode or a high power mode based on the distance.

3. The remote sound collection and processing device according to claim 1, characterized in that: The LED display device is an LED strip screen, including light-emitting diodes, which visually displays audio signals through an LED array and has a highest-order retention function and a reset button, which is used to retain the high-order amplitude of abnormal sounds and clear them after the operator operates the reset button to reset them.

4. The remote sound collection and processing device according to claim 1, characterized in that: The audio signal level processing unit divides the received audio signal into two paths, one for the on-site normal audio processing circuit and the other for the on-site abnormal audio processing circuit, processes the normal and abnormal audio respectively, and displays the processing results on the LED display device respectively.

5. The remote sound collection and processing device according to claim 4, characterized in that: The on-site normal audio processing circuit inputs the on-site audio into the level driving circuit, performs band-stop filtering on the recording, adjusts the audio level to the required level amplitude by adjusting the resistor, and detects and processes the on-site sound that is higher than normal.

6. The remote sound collection and processing device according to claim 4, characterized in that: The on-site abnormal audio processing circuit uses an active second-order high-impedance filter to filter out normal audio from the on-site audio signal, picks up the abnormal audio signal, sets the band-stop center frequency, amplifies the abnormal audio through an audio amplifier, displays it through another level driving circuit, and alarms through a buzzer.

7. The remote sound collection and processing device according to claim 5 or 6, characterized in that: The level driving circuit driver IC is LM3915.

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