Combined intelligent multichannel noise vibration analyzer

Abstract

The utility model discloses a combined intelligent multichannel noise vibration analyzer, which relates to the technical field of noise vibration analysis, and comprises a host, a mainboard and a power supply assembly, the mainboard is provided with a processor, and the mainboard is connected with the power supply assembly; the multifunctional head comprises at least one rainfall sensor, at least one wind speed sensor and an analog acquisition board comprising a plurality of signal channels, the analog acquisition board is connected with a noise sensor, the plurality of signal channels are connected to the main board, the ranges of different signal channels are different, and the range of the analog acquisition board is larger than that of the noise sensor. The rainfall sensor and the wind speed sensor are both connected to the main board, and the multifunctional head is connected with the host in a clamped mode. According to the utility model, the wind speed and rainfall monitoring function is added, different measuring range signal channels are added, the structure is compact, the carrying is convenient, and the monitoring efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise and vibration analysis, in particular to a combined intelligent multi-channel noise and vibration analyzer. Background Art

[0002] Noise monitoring involves numerous tasks, such as annual functional area noise monitoring, road traffic noise monitoring, regional noise monitoring, construction noise monitoring, and factory boundary noise monitoring. These monitoring tasks often require monitoring at designated locations within specified time periods, and monitoring personnel must be certified. However, due to limitations in monitoring equipment, in practice, data that is not collected at designated locations or during designated periods is often reported as valid, resulting in significant randomness. Furthermore, noise monitoring often requires recording meteorological data (wind speed and rainfall; the national standard GB\T3096 stipulates that monitoring must be conducted when it is raining and the wind speed is less than 5 m / s). However, existing noise monitoring equipment lacks wind speed and rainfall monitoring capabilities, requiring the installation of separate anemometers and rainfall sensors, significantly inconvenient for monitoring personnel. Furthermore, the amplitude of the noise signals being monitored can fluctuate significantly, requiring frequent range changes. Traditional noise and vibration analyzers generally have limited ranges, requiring monitoring personnel to carry analyzers with different ranges, which is very inconvenient. Utility Model Content

[0003] Technical problems to be solved by utility models

[0004] In response to the technical problem that existing noise and vibration analyzers are inconvenient to use during the monitoring process because they do not have the wind speed and rainfall monitoring function and have a limited range, the utility model provides a combined intelligent multi-channel noise and vibration analyzer, which adds wind speed and rainfall monitoring functions, adds different range signal channels, has a compact structure, is easy to carry, and greatly improves the efficiency of monitoring work.

[0005] Technical Solution

[0006] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0007] A combined intelligent multi-channel noise and vibration analyzer includes a host, a mainboard, and a power supply assembly, wherein the mainboard is provided with a processor and is connected to the power supply assembly; a multifunctional head, including at least one rain sensor, at least one wind speed sensor, and an analog acquisition board containing multiple signal channels, wherein the analog acquisition board is connected to the noise sensor, and multiple signal channels are connected to the mainboard, and different signal channels have different ranges. The rain sensor and the wind speed sensor are both connected to the mainboard, and the multifunctional head is snap-connected to the host.

[0008] The motherboard serves as the control center for the entire system, processing data collected from various sensors. The power supply provides power to the system and may include either a built-in battery or a replaceable battery. The processor, located on the motherboard, is responsible for data processing and calculations. The rain sensor detects rainfall. The wind speed sensor measures wind speed. The analog acquisition board has multiple signal channels, each connected to a noise sensor. These channels have different measurement ranges to accommodate sound signals of varying intensities. The multifunctional head snaps onto the main unit, creating a compact and portable design.

[0009] Optionally, the rain sensor is an optical rain sensor, comprising a symmetrically arranged rain emitting lens and a rain receiving lens, as well as a rain emitting chip and a rain receiving chip, wherein the rain emitting chip and the rain receiving chip are respectively facing the converging lenses of the rain emitting lens and the rain receiving lens.

[0010] Optical rain gauges operate based on the principles of light scattering and reflection. A rain gauge transmitter chip emits a beam of light, typically infrared, which travels through raindrops in the air. When the beam encounters raindrops, it scatters. Some of the light is scattered by the raindrops and propagates in different directions. A rain gauge receiver chip, located opposite the transmitter chip, receives the scattered light signal. The intensity of the received light signal varies due to the presence of raindrops. The more numerous and larger raindrops there are, the less light is scattered, and the weaker the received light signal. By analyzing these variations in the intensity of the received light signal, the optical rain gauge can calculate the size and number of raindrops, and thus the rainfall amount.

[0011] Optionally, the rain sensor is a resistive rain sensor or a capacitive rain sensor.

[0012] The accuracy is not as high as that of optical rain sensors, but the cost is lower.

[0013] Optionally, the wind speed sensor includes a plurality of regularly arranged air pressure sensors, and the air pressure sensors are connected to the mainboard.

[0014] The wind speed is calculated through the pressure difference of each pressure sensor, because air flows from high pressure to low pressure. The greater the pressure difference between two points, the greater the wind speed.

[0015] Optionally, the air pressure sensors are distributed in a rectangular array.

[0016] In a rectangular array, the pressure sensors are placed at equal distances, and the calculated wind speed is more accurate.

[0017] Optionally, the air pressure sensors are distributed in a multi-layer circular array.

[0018] In a multi-layer circular array, air pressure sensors are distributed over 360° of the circumference, and the calculated wind direction angle will be more accurate.

[0019] Optionally, the host is provided with a camera, a screen and buttons, and the camera, screen and buttons are all connected to the mainboard.

[0020] The camera is used to record on-site conditions or capture images / video of specific events. While recording noise or vibration events, it also captures relevant image or video evidence, facilitating subsequent analysis and reporting. The screen displays device status information, monitoring data, and an operation menu. Users can view real-time monitoring results directly on the screen, eliminating the need for additional equipment. Keyboard controls are used to operate the device, such as starting and stopping monitoring, switching between monitoring modes, and adjusting settings, making operation more intuitive and simple.

[0021] Optionally, the screen is a touch screen.

[0022] Touch screen operation is more convenient.

[0023] Optionally, the power supply assembly includes a dry cell power supply structure and a rechargeable lithium battery power supply structure, and the rechargeable lithium battery power supply structure is connected to a charging interface.

[0024] For daily use or when stable charging conditions are available, the rechargeable lithium battery is preferred, as it is more economical and environmentally friendly. In remote areas or special circumstances, the dry cell battery provides a reliable backup. Providing two power supply options allows the device to operate in a variety of environments, ensuring normal operation even without an external power source.

[0025] Optionally, a rubber sleeve is provided at the joint between the main unit and the multifunctional head.

[0026] The rubber sleeve is beneficial to improving structural stability and sealing performance.

[0027] Beneficial effects

[0028] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0029] This utility model provides a multifunctional solution, incorporating both a rain sensor and a wind speed sensor, capable of simultaneously monitoring parameters such as noise, vibration, wind speed, and rainfall. The main unit and multifunctional head are installed together in a compact structure, making it easy to carry to various locations for monitoring. Furthermore, the multiple signal channels with different ranges are highly efficient, allowing a single deployment to monitor noise parameters across multiple signal amplitudes, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a multifunctional head and a main unit of a combined intelligent multi-channel noise and vibration analyzer proposed in an embodiment of the present utility model;

[0031] Figure 2 A schematic diagram of the overall structure of a combined intelligent multi-channel noise and vibration analyzer proposed in an embodiment of the present utility model;

[0032] Figure 3 A modular structure flow chart of a combined intelligent multi-channel noise and vibration analyzer proposed in an embodiment of the present utility model;

[0033] Figure 4 A schematic diagram of a signal channel of a combined intelligent multi-channel noise and vibration analyzer proposed in an embodiment of the present utility model;

[0034] Figure 5 A schematic structural diagram of a wind speed sensor of a combined intelligent multi-channel noise and vibration analyzer proposed in an embodiment of the present utility model;

[0035] 10. Multi-function head; 11. Rain sensor; 12. Wind speed sensor; 13. Input terminal; 14. Output terminal; 20. Main unit; 21. Touch screen; 22. Ink screen; 23. Button; 30. Noise sensor. DETAILED DESCRIPTION

[0036] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0037] Example

[0038] Combined with attachment Figure 1 , a combined intelligent multi-channel noise and vibration analyzer, including a host 20 and a multifunctional head 10.

[0039] Combined with attachment Figure 2 The host 20 includes a mainboard and a power supply assembly. The mainboard is equipped with a processor and is connected to the power supply assembly. The mainboard has a facial recognition module, a satellite positioning module, and a cellular network module. Monitoring personnel also need to be certified to work, so an identity recognition function is required.

[0040] The multifunctional head 10 includes at least one rain sensor 11, at least one wind speed sensor 12, and an analog acquisition board containing multiple signal channels. The analog acquisition board is connected to a noise sensor 30. Multiple signal channels are connected to the main board. Different signal channels have different ranges. The rain sensor 11 and the wind speed sensor 12 are both connected to the main board. The multifunctional head 10 is connected to the host 20.

[0041] Combined with attachment Figure 3In this embodiment, the signal channel is connected to a one-to-four-channel conversion circuit, with an input terminal 13 connected to four output terminals 14. A rain sensor 11 and a wind speed sensor 12 are provided, one on the front and one on the back of the multifunctional head 10, respectively. The signal channel simultaneously outputs a single input signal through four interfaces. After connecting the signals to the host computer 20, the host computer 20 selects different ranges for processing the four channels. Based on the channel signal strength, the host computer selects a channel with an appropriate range for data analysis. This allows for analysis of signals within a wide amplitude range using a single channel, thus avoiding the frequent range changes required when analyzing signals through a single channel due to large amplitude fluctuations.

[0042] The rain sensor 11 is an optical rain sensor. It includes symmetrically arranged rain-emitting and rain-receiving lenses, as well as rain-emitting and rain-receiving chips. The rain-emitting and rain-receiving chips face the converging lenses of the rain-emitting and rain-receiving lenses, respectively. The rain sensor 11 can also be a resistive or capacitive rain sensor. A resistive rain sensor consists of two electrodes, typically parallel metal plates. When no raindrops touch the sensor, current flows freely. However, when a raindrop lands in the area between the electrodes, it forms a resistive path, changing the flow of current. The sensor determines the amount of precipitation by measuring this change in resistance. Typically, resistive sensors require an external power supply and an amplifier to read and process the resistance change signal. Capacitive rain sensors measure precipitation based on the change in capacitance between the liquid and a capacitor. The sensor typically consists of two parallel electrodes, forming a plate capacitor. When no raindrops land between the electrodes, the capacitance is fixed. However, when a raindrop contacts the electrodes, the capacitance increases. The sensor uses a circuit to measure the change in capacitance and convert it into precipitation. To ensure accuracy, capacitive sensors typically require an external power supply and a sophisticated circuit to measure and process the capacitance change signal.

[0043] Combined with attachment Figure 5 The wind speed sensor 12 includes multiple regularly arranged air pressure sensors connected to the mainboard. The air pressure sensors are arranged in a rectangular array or a multi-layer circular array. The air pressure sensors in the rectangular array are evenly spaced, while the air pressure sensors in the multi-layer circular array are distributed in a divergent pattern. Air flows from high pressure to low pressure. The greater the pressure difference between two points, the greater the wind speed. The wind speed (including speed and direction) can be calculated based on the pressure difference between each pressure sensor.

[0044] During the monitoring process, the device automatically collects noise data, wind speed data, and rainfall data through the microphone, built-in wind speed sensor, and built-in rainfall sensor. It automatically determines whether the noise data per second is valid. If valid, the second data is marked as valid, and the noise data enters the corresponding integral statistical analysis calculation. If invalid, the noise second data is marked as invalid, and the noise data does not enter the corresponding integral statistical analysis calculation. After the measurement is completed, the wind speed and rainfall conditions of the measurement period are automatically marked on the measurement results. This realizes the function of automatically eliminating noise data from the wind speed and rainfall sensor data.

[0045] The host 20 is equipped with a camera, a screen, and buttons 23, all of which are connected to the mainboard. The screen is a touch screen 21. The facial recognition module can identify the identity of the monitoring personnel through the camera. The monitoring personnel go to the designated location for monitoring at the designated time. Before the measurement begins, the device obtains the device's current location information and time information based on the built-in satellite positioning device and matches it with the location and time specified in the task. At the same time, the device uses the facial recognition function to determine whether the device operator is the person specified for the task. If the time, location, and person do not match, the task will not be started and the device will not be able to measure. The measurement task can only be started when all three match. At the same time, the requirements for pre-measurement acoustic calibration and post-measurement acoustic verification are standardized during the task execution, improving the monitoring quality.

[0046] The power supply assembly includes a dry cell power supply structure and a rechargeable lithium battery power supply structure, and the rechargeable lithium battery power supply structure is connected to a charging interface.

[0047] The clamping joint between the main unit 20 and the multifunctional head 10 is provided with a rubber sleeve, and a ring groove is provided on the inner side of the rubber sleeve. The clamping joint between the main unit 20 and the multifunctional head 10 is provided with a matching ring bulge, which cooperates with the clamping joint for reinforcement, so that there will be no problem of falling off due to non-human factors during use and the sealing is improved.

[0048] Combined with attachment Figure 4After the sensor converts the measured signal into an electrical signal, it is transmitted to the AD conversion chip through channel 1 to channel 4. The AD conversion chip then converts the time domain electrical signal into a 4-channel 48kHz (or other frequency) 32-bit digital signal. The data is then sent to the processor of the Hongmeng motherboard through the I2S interface protocol. The processor performs various analyses and displays the results on the ink screen 22 and the touch screen 21. Depending on the analysis task, different resources are required, and then a different number of processors are turned on to achieve 24-hour noise monitoring, noise statistical analysis, 1 / 1OCT (spectrum analysis), 1 / 3OCT, 1 / 6OCT, 1 / 12OCT, FFT analysis, indoor measurement, reverberation time, STI, whole-body vibration measurement, hand-transmitted vibration measurement, vibration 1 / 3OCT analysis and other measurement tasks, and the test results are displayed on the display (when performing noise and vibration related analysis, the noise and vibration sensors need to be connected separately).

[0049] The MUC processor and multi-core ARM processor can achieve two operating modes. Normal operating mode: When the instrument is performing other analyses besides 24-hour noise monitoring, it operates in normal operating mode. In this mode, the instrument regularly monitors ARM core usage and determines the number of ARM cores to enable based on this information, minimizing power consumption while meeting normal measurement and analysis requirements without impacting the user experience. Low-power operating mode (24-hour noise monitoring only): When performing a long-lasting measurement such as 24-hour noise monitoring, the instrument will prompt you to disable all other measurements and retain only this one. After the large LCD screen is off for a period of time, the instrument automatically shuts down the ARM processor and related peripheral circuits, leaving only the E-mail Display 22, the MUC processor, and the noise and vibration acquisition components operational. This ensures low power consumption and long battery life. The 24-hour measurement results are displayed on the E-mail Display 22. When the user turns on the large LCD screen, the device enters normal operating mode.

[0050] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A combined intelligent multi-channel noise and vibration analyzer, characterized in that: include A host computer, comprising a mainboard and a power supply assembly, wherein the mainboard is provided with a processor and is connected to the power supply assembly; The multifunctional head includes at least one rain sensor, at least one wind speed sensor, and an analog acquisition board containing multiple signal channels. The analog acquisition board is connected to a noise sensor. The multiple signal channels are connected to the main board. Different signal channels have different ranges. The rain sensor and the wind speed sensor are both connected to the main board. The multifunctional head is connected to the host card.

2. A combined intelligent multi-channel noise and vibration analyzer according to claim 1, characterized in that: The rain sensor is an optical rain sensor, comprising a symmetrically arranged rain emitting lens and a rain receiving lens, as well as a rain emitting chip and a rain receiving chip. The rain emitting chip and the rain receiving chip are respectively facing the converging lenses of the rain emitting lens and the rain receiving lens.

3. A combined intelligent multi-channel noise and vibration analyzer according to claim 1, characterized in that: The rain sensor is a resistive rain sensor or a capacitive rain sensor.

4. A combined intelligent multi-channel noise and vibration analyzer according to claim 1, characterized in that: The wind speed sensor includes a plurality of regularly arranged air pressure sensors, and the air pressure sensors are connected to the main board.

5. A combined intelligent multi-channel noise and vibration analyzer according to claim 4, characterized in that: The air pressure sensors are distributed in a rectangular array.

6. A combined intelligent multi-channel noise and vibration analyzer according to claim 5, characterized in that: The air pressure sensors are distributed in a multi-layer circular array.

7. A combined intelligent multi-channel noise and vibration analyzer according to claim 1, characterized in that: The host is provided with a camera, a screen and buttons, and the camera, the screen and the buttons are all connected to the mainboard.

8. A combined intelligent multi-channel noise and vibration analyzer according to claim 7, characterized in that: The screen is a touch screen.

9. A combined intelligent multi-channel noise and vibration analyzer according to claim 1, characterized in that: The power supply assembly includes a dry cell power supply structure and a rechargeable lithium battery power supply structure, and the rechargeable lithium battery power supply structure is connected to a charging interface.

10. A combined intelligent multi-channel noise and vibration analyzer according to any one of claims 1 to 9, characterized in that: A rubber sleeve is provided at the clamping joint between the main unit and the multifunctional head.

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