Urban smart manhole cover solution based on sensor technology

“With the rapid advancement of the Internet of Things technology, based on the combination of sensors, satellite positioning, mobile communications and other technologies, the intelligent transformation of urban manhole covers has begun to spread in the construction of domestic smart cities, further improving the level of urban management.

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With the rapid advancement of the Internet of Things technology, based on the combination of sensors, satellite positioning, mobile communications and other technologies, the intelligent transformation of urban manhole covers has begun to spread in the construction of domestic smart cities, further improving the level of urban management.

Recently, the Chenghua District of Chengdu took the lead in adopting smart manhole cover sensors. A black sensor is installed on the inner wall of the manhole cover. The state of the manhole cover can be sensed in real time through chips such as acceleration sensors and gyroscopes. Refined monitoring and management of urban manhole covers, combined with artificial intelligence technology, using 5G communication technology to conduct road video inspections, and identify pavement diseases on urban roads. It is reported that this area is the first nationwide application of intelligent technology to judge the noise, subsidence, and lack of manhole covers in the first time. Let me introduce the solution of urban smart manhole cover based on sensor technology.

In cities, snorkeling wells can be roughly divided into multiple types of snorkeling wells, such as water, electricity, gas, and heat. According to statistics, there are more than 500 million smart manhole covers in the country, which need to be replaced in 3 to 5 years, and the market space is huge.

We know that manhole covers are an ordinary public facility in cities, but small manhole covers are closely related to people’s lives and safety. Neglect of supervision can lead to safety accidents. Even if the manhole cover is intact, once it becomes loose due to aging, it will cause great trouble to the surrounding residents. Especially in the flood season every year, in the invisible corners under the smart manhole covers all over the city roads, various sensors silently guard people’s travel safety in rainy days. In this regard, for different wells, the installation of different types of sensors, including displacement, liquid level, gas concentration, etc., can realize the monitoring of various key hidden dangers. For example:

In response to urban flooding during the flood season, some cities will also install liquid level sensors under sewage wells and rainwater wells to realize real-time monitoring of sewage and rainwater flow. The MaxBotix ultrasonic liquid level sensor provided by Gongcai.com-MB7066 is a small but rugged, weather-resistant ultrasonic sensor. It meets the IP67 protection level, can prevent dust inhalation, and can be soaked for a short time. It has the advantages of high output sound power and continuously variable gain, real-time automatic calibration, and good noise suppression algorithms, which can effectively achieve noise-free distance readings. Even in the presence of many acoustic or Electronic noise sources, stable and reliable distance readings can be obtained. The measurable distance is up to 10 meters, and it is well used in long-distance detection and tank level detection.

Similarly, for gas tube wells and special gas tube wells, corresponding gas sensor alarm equipment will be installed to facilitate monitoring of the concentration of combustible gas and toxic gas in the well. Once dangerous situations such as gas leakage occur, alarm information will be sent to the management platform immediately , So that the inspectors can arrive at the scene as soon as possible. For the detection of combustible gas, it is recommended to use the Japanese figaro combustible gas sensor/natural gas sensor-TGS2611.

TGS2611 has high sensitivity to methane gas. Because of its low sensitivity to volatile alcohol (a common interference gas in residential environments), it is an ideal sensor for household gas leak alarms. Due to the small volume of the sensitive element, the heater current of the combustible gas sensor TGS2611 only needs 56mA, and the detection part of the sensor is housed in a standard TO-5 metal package. On the other hand, the combustible gas sensor TGS2611-C00 is not only small in size, but also very responsive. It is a good choice for gas leak detector. The combustible gas sensor TGS2611-E00 is equipped with a filter cover that can eliminate the influence of interference gases such as alcohol, and has a sensitive characteristic of high selectivity to methane gas. It is especially suitable for appliances that detect complicated and demanding household environments. It is an ideal sensor for household gas leak detectors.