FeRAM Application in Smart Monitoring
The Background of the Smart Monitoring
With the improvement of foundation treatment technology, the technology of cement mixing piles to treat soft foundations to improve the degree of consolidation and stability of soft foundations has been widely used, and some improved new technologies have also appeared in construction site, but in the implementation process still relies on human control and operation, and the level of quality control, quality assessment, and informatization construction is behind the times. For different sites and strata, different surrounding conditions and engineering requirements, almost only the experience of designers is used. As the basis for construction, the quality of on-site construction also depends on the responsibility of the construction personnel, and the construction quality cannot be guaranteed. Therefore, it is very important to establish a complete real-time monitoring and analysis system for soft foundation treatment construction.
Soft foundation treatment construction is a concealed construction, and its quality control has always been a difficulty and pain point in the industry. Due to the large amount of construction work for soft foundation treatment, the inconvenience of human supervision, and the on-site construction can only rely on the responsibility of the construction personnel, resulting in the construction quality cannot be guaranteed. Therefore, it is imminent for the construction industry, especially government-funded projects, to strengthen the construction management of soft foundation treatment. Nowadays, with the development of Internet of Things technology, many monitoring system brands have emerged, and various monitoring methods for pile drivers have been developed, which can well solve the problems of concealed engineering construction and ensure construction quality.
Although the promotion and application of intelligent soft ground treatment monitoring equipment in Jiangsu and Zhejiang provinces is relatively mature nationwide, there is no real-time monitoring of mud proportion. In the past, there was a lack of monitoring methods for such critical indicators.
The conditions of the construction site are complex and changeable, and the empty pile data affects the monitoring of cement consumption and real-time drilling speed. In the past, there is no such solution.
The large amount of construction work and the long construction time lead to the accumulation of a large amount of engineering data in late stage of construction, and the lack of an evaluation system for construction quality in the past.
The Appearance of Our Smart Monitoring
Based on the Internet of Things and big data technology, combined with the application of mobile Internet and cloud computing technology, we independently developed a soft-base processing intelligent monitoring system, and continued iterative optimization according to the implementation results and design requirements.
Compared with normal monitoring system, ours adopts Fujitsu FeRAM IC in the solution. It is known that there will be frequent power off in the construction site, and the data canoot be kept with the normal monitoring system. However, since our system used Fujitsu FeRAM, which is non-volatile solution, which can keep data without battery, it can keep the date when sudden power off. It is a great improvement since the project needs to keep the complete data during the construction system working.
The host of the monitor should be installed on the operating platform of the drilling rig where it is convenient for the operator to observe and operate. When using it, it is necessary to connect the electromagnetic flowmeter, depth sensor, and inclination sensor to the corresponding interfaces on the side panel of the host, and connect the power cord. , and then plug the power cord into the 220V AC.
It includes a photoelectric encoder, transmission parts frame. Among them, the photoelectric encoder is driven by the transmission wire rope/chain through the transmission parts. On the derrick of the drilling rig, choose a suitable location to drill, fix the depth sounder on the derrick firmly with screws, loosen the pinch wheel, put the transmission wire rope between the pinch wheel and the drive wheel or the chain drive shaft, and then fine-tune The base of the sounder, make the driving wire rope/chain in the normal driving position, then fix the base and adjust the pressing force of the pressing wheel and the driving wheel to ensure that when the driving wire rope/chain moves, it will not slip and drive the rotating wheel to rotate, so that the photoelectric The encoder rotation is consistent with the linear displacement of the wire rope/chain.
Select a suitable place on the original grouting pipe of the drilling rig to disconnect the grouting pipe, and then connect the flow device in series. During installation, the direction pointed by the arrow of the electromagnetic flowmeter must be consistent with the actual flow direction of the cement slurry. According to the different diameters of the original grouting pipes, the corresponding variable diameter pipes should be selected, and the joints should be fastened with clamps or iron wires.
The inclination sensor is installed on the drill frame, and the iron block is welded to 1/5 of the lower height of the drill frame with a welding machine, and then the inclination sensor is fixed on the iron block with two Φ4 screws.
Find one of the corresponding three-phase live wires in the electric control cabinet of the pile machine, put it into the current transformer, and fix the transformer with screws, preferably the same live wire as the current transformer equipped with the original machine.
Installation does not require special fixing brackets, and the container-type structure of the instrument can overcome the influence of external forces.
The high vibration frequency of the measuring tube ensures that the measurement will not be affected by the vibration of the pipeline, and has a vibration isolation design.
As long as there is no cavitation phenomenon, the measurement will not be affected by pipe fittings such as valve bends, tees, etc., but the density meter is best kept away from large interference sources such as pumps and other large equipment to avoid turbulent flow and air bubbles.
For the operation of this instrument, it is kind of complex. We can guide you on line. Please feel free to contact us if you have any questions.