From undergraduate to direct PhD to finally staying in school to teach
For Zhang Dongming,
"love" is the source of motivation that guides him to move forward
As a member of the first
"Shanghai Science and Technology Youth 35 People Leading Plan"
He is a young The leader of a generation of Shanghai science and technology talents
Perhaps, even he himself never thought of
who dug a sand pit channel on the river beach decades ago
who was deeply influenced by his father
who dreamed of participating in the construction of Taiwan Strait Tunnel
Bohai Bay since he was a child. The little boy in the tunnel
will grow into artificial intelligence empowering urban underground infrastructure
"explorer" of safety and control research
In most people's stereotype of technology workers , talkativeness does not seem to be their strong point . Even when introducing his research results to the outside world, he often uses professional terms, making people who are not knowledgeable think that they are listening to "heavenly books".
But Zhang Dongming is a bit special. He is very talkative, but not very professional. He is very good at transforming professional knowledge and professional cases in the civil engineering field into short stories that ordinary people can understand.
Perhaps this is due to the particularity of the research field! After all, he has to visit the construction site for a long time and deal with the construction workers for a long time.
The "earth-like" professor
is different from the biomedicine field where there can be no precision scientific experiments. The scientific research in the civil engineering industry is a bit rough and requires more in-depth visits to the construction site.
It is precisely because of this that Zhang Dongming will encounter more unexpected special situations when facing specific problems.
How to control the safety of underground tunnels?
What factors affect the safety of underground tunnels? What is the mechanism by which
affects the safety of underground tunnels? When a problem occurs with
, how to prevent the impact from expanding?
...
This is the core work of underground safety control
It is also the difficulty.
The underground is different from the ground. The overall underground environment is more complex and changeable, especially when facing some dangerous situations, many surveyors need to risk their lives. Only by going deep into the underground tunnels can we measure the overall conditions of the tunnels one by one and then formulate an overall plan.
To this end, Zhang Dongming has set his sights on the research and development of safe sensing and control hardware, using scientific and technological means to quickly and accurately capture the deformation data of underground tunnels.
Professor of at Tongji University: Zhang Dongming
"During my doctoral studies, I worked with the tutor team and the team at the School of Telecommunications to transform the electrical changes captured by the wireless sensing fulcrum based on the microcomputer electrical system into changes in civil tunnel engineering mechanics. It mainly senses and diagnoses the deformation characteristics of the tunnel structure, the longitudinal changes of the linear tunnel, etc. "
In 2019, due to the failure of construction equipment in an underground tunnel, water seepage occurred in the tunnel for a long time, and the originally circular tunnel developed a large longitudinal gap. Deformation and even cracks appeared.
Since the conditions of the underground tunnel were unknown at the time, and considering the safety of construction and supervision personnel, traditional testing methods could no longer measure the overall condition of the underground tunnel. In the end, the construction party decided to use sensors to collect data unmanned and quickly, and plan the data through the collected data. The risk level is determined and then evaluated and monitored by professionals, and the crisis is finally resolved.
For Zhang Dongming, this incident is of great significance. It verifies the huge role that safety control can play in the construction process of underground tunnels.
Currently, Zhang Dongming and his entire team have reached relevant cooperation with Shanghai Shuntong Metro Group and Shanghai Tunnel Co., Ltd. in the entire process of tunnel construction, operation and management.
In 2020, Zhang Dongming also participated in the scientific research project of the Municipal Science and Technology Commission in the field of social development. The project plans to use big data mining and machine learning to collect all-round sensing data of the entire shield tunnel construction process, and use artificial intelligence to adapt Various complex environments and emergencies during tunnel construction.
Zhang Dongming said: "From the current situation, whether it is from the sensor itself or the external environment, security perception and dynamic early warning can truly be seamless with all engineering construction and operation and maintenance throughout the entire cycle, process, and all aspects. There are still certain difficulties in connection. "
There are many layers of constraints, and the comprehensive application of sensors has a long way to go.
Relying on artificial intelligence to empower industry development is nothing new, but it is still a bit "unusual" for the civil engineering industry. As a labor-intensive industry, the development of artificial intelligence in the civil engineering field lags far behind other industries. An expert in the field of artificial intelligence once said when attending a conference in the civil engineering field: "Artificial intelligence in civil engineering ranks second to last in the entire industry!"
Speaking of this matter, Zhang Dongming also joked: "I suspect that Civil Engineering is the last one, just because people are embarrassed to say it in civil engineering meetings!"
To outsiders, these seem to be jokes. But for Zhang Dongming, who chose to carry out intelligent innovation in the field of civil engineering, he is deeply aware of these difficulties.
Zhang Dongming told Shanghai Science and Technology: "Currently, the civil engineering industry lacks multi-disciplinary talents for intelligence, which is also one of the important factors restricting the development of intelligence. Although we can cooperate with other colleges to develop, other colleges lack knowledge of civil engineering. Understand that the requirements may not be perfectly realized.”
In the early stages of sensor research, Zhang Dongming and his team faced many difficulties. Such as the effective correlation between the electrical characteristics of the sensor and the structural response, the improvement of the sensor accuracy algorithm, the signal transmission effect of the sensor in multi-phase media such as air, liquid and even soil, concrete, etc. These are all scientific aspects that the sensor needs to overcome. difficulty.
At the same time, on the front line of production and construction, human issues are also very important. Due to various interferences in the on-site construction environment, sensor data often suffers from distortions and alarms, which also causes front-line production workers to question the function of the sensors, which in turn creates resistance.
In fact, these just prove the importance of going to the construction site. After all, sensors are meant to operate in complex environments, and their various complex real-life situations are completely beyond the reach of calculations and digital simulations.
With the continuous efforts of him and his team, these difficulties have been overcome one by one, and it is precisely because of this that we can see the launch of the first generation of sensors.
From dot-shaped sensors to linear sensors, compared with similar million-dollar foreign products, Zhang Dongming did not create a new field, but it greatly improved the performance and reduced the cost on the original basis. In the future, the construction of sensor perception system will also be formed.
"With the support of relevant projects from the Ministry of Science and Technology and the Municipal Science and Technology Commission, I will continue to improve the sensing capabilities of the sensor and continue to work hard in intelligence and refinement."
