Monitoring and Control System for Noise Sources in Food Street Shops

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With the rapid growth of commercial activities, the flow of people and vehicles in the commercial district has significantly increased, and the noise level has also risen. This not only affects the shopping experience of consumers, but may also cause problems for the quality of life of surrounding residents. Therefore, effective monitoring and management of noise within commercial districts has become an urgent issue to be addressed.

Monitoring and Control System for Noise Sources in Food Street ShopsIntegrating a secondary sound level meter, voiceprint recognition module, sound source positioning device, high-definition dome camera, AI visual recognition terminal, linked sound column, and data transmission module, deployed near key boundaries of commercial districts and fixed noise pollution sources. Equipped with real-time noise collection and monitoring functions suitable for complex scenes, it integrates voiceprint recognition, sound source localization, video capture, automatic persuasion, over limit warning, data upload and other functions to ensure the authenticity and timeliness of monitoring data. Meeting the core needs of urban noise control and responding to people's livelihood demands is the main basis for law enforcement, evidence collection, and daily supervision.

Monitoring and Control System for Noise Sources in Food Street ShopsCore Features

Multi module integration

Integrating noise monitoring, voiceprint recognition, visual recognition, video remote monitoring, intelligent persuasion, and data transmission, without the need to deploy individual devices, saving space and costs.

2 high-precision monitoring

Built in second level sound level meter that meets national measurement standards, with a monitoring range of 30-130dB and an accuracy of ± 0.5dB. It supports real-time collection of equivalent continuous A-level (Leq), maximum sound level (Lmax) and other indicators.

3. Strong applicability

It can work normally in an environment with a temperature of -30 ℃ -50 ℃, a relative humidity of 0% -100% RH (non condensing), and a pressure of 65kPa-108kPa. The protection level reaches IP55, and it has the ability to prevent wind, rain, dust, and frost.

4 types of power supply modes for the power grid

Supports 4G/5G/wired network access methods, as well as three modes: mains power supply, solar power supply, and battery power supply, which can be flexibly selected according to different installation scenarios.

core functionality

Real time monitoring of noise

The system can continuously collect and monitor the decibel levels of noise in the surrounding environment in real time, including equivalent continuous sound level (Leq), maximum sound level (Lmax), and minimum sound level (Lmin). All collected raw data will be automatically summarized and calculated according to preset time periods, such as every minute, every hour, and every day, and generate monitoring data reports with standardized formats and detailed content. These reports, along with real-time noise data, will be dynamically displayed on a unified management platform interface. The platform also provides * data query and backtracking functions, allowing users to access and trace detailed monitoring records from any historical period at any time, facilitating long-term trend analysis and problem troubleshooting.

2. Voiceprint recognition analysis

The system integrates a professional voiceprint feature database trained on a large number of samples, and uses advanced audio analysis and pattern recognition algorithms to deeply analyze and intelligently classify the collected environmental sounds. It can accurately distinguish various common types of noise sources, such as human voices generated by crowd conversations and noise, mechanical noise generated by loading and unloading goods or construction, music played by high pitched speakers used in commercial activities, and traffic noise generated by vehicle traffic on the road. The automatic recognition accuracy of the system for the above-mentioned sound source types has been rigorously tested and can stably reach a high level of not less than 90%, providing reliable basis for the qualitative identification of noise sources.

3 Sound Source Localization

The system deploys array microphone devices with specific structures and utilizes principles such as the time difference between sound waves reaching different microphones to accurately measure and locate the spatial orientation of environmental noise emission points. Its positioning accuracy is high, and the error can be controlled within a range of 5 meters. The positioning results will be projected in real-time onto the electronic map integrated into the management platform, clearly displaying the specific geographical location of the noise source, thus achieving a complete closed-loop from discovering the noise to tracing its source, and helping management personnel quickly identify the problem area.

4. AI recognition of violations

The system comprehensively utilizes high-definition spherical monitoring cameras and visual recognition terminals equipped with AI algorithms to perform all-weather intelligent analysis of monitoring images. It can automatically identify various pre-defined violations that are prone to noise pollution, such as merchants placing food and gathering customers outside the designated area, using loudspeakers for promotion, conducting nighttime construction work during prohibited periods, and crowds gathering for square dance activities. This function realizes the dual technology fusion and cross validation of "video image intelligent analysis" and "audio voiceprint recognition", greatly improving the comprehensiveness and reliability of illegal behavior recognition.

5 Intelligent Persuasion Intervention

When the system detects that the noise level in a certain area exceeds the set legal or management standard threshold, it will automatically trigger the preset linkage response mechanism. The system will intelligently link directional sound columns or broadcasting devices deployed in the area, automatically playing pre recorded standardized civilized persuasion voice prompts, such as: "Warm reminder: The current noise level in your area has exceeded the prescribed standard. Please actively reduce the volume and work together to maintain a civilized and harmonious environment." Through this timely and gentle voice reminder method, flexible front-end persuasion and management can be achieved, prompting on-site personnel to consciously adjust their behavior and effectively avoid the continuous or worsening of noise exceeding standards.

6 Remote Call Intervention

When the property management or relevant law enforcement personnel receive system warnings or discover illegal noise behavior on site through video surveillance, they do not need to physically visit the scene. They can access the target area's broadcasting system through authorized mobile applications or web-based management platforms. Management personnel can directly conduct remote real-time shouting to immediately stop and verbally warn on-site violations, ensuring the timeliness and deterrence of intervention.

7. Automatic capture and screen recording for exceeding standards

Once the system determines that a noise exceeding standard event has occurred, it will not only trigger an alarm, but also automatically instruct the monitoring cameras in the associated area to start the evidence fixation program. The program includes continuous high-definition image capture of the on-site situation, while initiating a period of synchronous video recording and audio recording to fully record the dynamic scene and environmental sound during the occurrence of noise exceeding events. The "picture+video+audio" multimedia evidence package formed in this way constitutes a clear, complete, and tamper proof evidence chain, providing a solid basis for subsequent disposal, punishment, or dispute resolution.

8-level warning push

The system has an intelligent grading warning function, which can automatically classify warning information into different levels based on the severity, duration, or frequency of noise exceeding the standard. Subsequently, the system will accurately push different levels of warning information to different responsible units and personnel according to the preset responsibility process, such as the commercial district property management office, the affiliated street office, the urban management law enforcement team in the jurisdiction, and the higher-level ecological environment bureau. The push methods are flexible and diverse, covering various commonly used office and communication channels such as enterprise WeChat work groups, mobile SMS, and smart urban management dedicated applications, ensuring timely and accurate dissemination of warning information to all relevant responsible persons.

9 Real time data upload

After completing a series of processes such as local monitoring, identification, and warning, the system will also upload all key data generated during the process, including raw noise monitoring values, analyzed voiceprint classification results, associated video recording clips, and generated warning event records, in real-time to a higher-level "data governance and aggregation platform" through a stable network channel. This design ensures centralized storage and unified management of data, and reserves standardized data interfaces to support seamless integration and data sharing with city level or higher-level urban comprehensive supervision platforms, integrating into a broader smart city management system.

Technical specifications