Application of GPRS wireless communication in construction machinery Abstract: With the continuous development of society, the number of construction projects has gradually increased, and the application of construction machinery has gradually become popular. With the continuous development of construction machinery, its own functions have also increased information execution, information transmission, information processing, information conversion and information detection. In the remote operating system, GPRS plays an important role and provides an important solution for construction machinery. This paper mainly summarizes the construction machinery and GPRS wireless communication, and analyzes the application of GPRS wireless communication in construction machinery.
Keywords: construction machinery; GPRS wireless communication; remote operating system
With the rapid development of GPRS wireless communication, it has been widely used in various fields, and social development has gradually entered the wireless era. The field of construction machinery is developing towards informationization and intelligence while applying information technology.
1 overview of construction machinery and GPRS wireless communication
1. 1 construction machinery
Construction machinery is a special kind of machinery. Compared with ordinary machinery, construction machinery has no fixed workplace, and its working object is the earth, even in harsh environment and complex terrain. At present, information development is the development direction of construction machinery. Under this trend, the remote operating system of construction machinery mainly realizes remote maintenance, remote management, remote control and remote monitoring. Among them, remote insurance and anti-theft system, remote use management system and remote fault diagnosis system are widely used in construction machinery [1].
1.2GPRS wireless communication
GPRS refers to the general packet radio service, which is between the second and third generation communication technologies. At present, GSM mobile phone network can realize the technology of data and voice wireless bearer. It can be said that GPRS provides wireless data transmission service on GSM mobile phone platform, which is relatively stable, economical and high-speed. GPRS has many advantages and is of great significance to data transmission. For example, when users use GPRS, they can talk while surfing the Internet. At the same time, it has the function of high-speed data transmission, and the charging method is calculated according to the flow, always online. In addition, GPRS is widely used, suitable for small, frequent, sudden and intermittent data transmission, and also suitable for occasional big data transmission [2].
Application of 2GPRS wireless communication in construction machinery
Remote communication is the main task of remote operating system. The characteristics of many outdoor workplaces, large mobility and many workplaces determine that construction machinery should use wireless communication. Connecting the Internet with terminal equipment by wireless means is a common method in long-distance wireless communication systems, and the transmission of long-distance remote information is completed through the Internet covering the whole world. Satellite communication system and mobile communication system are both wireless access modes. Construction machinery is suitable to use satellite communication when working in the field, but this communication mode has high cost and poor two-way real-time communication performance, so it is a more convenient and low-cost mobile communication system in practical application. In the mobile communication system, wireless access to the Internet, GPRS is relatively high speed, stable, economical and simple [3]. With the gradual deepening of mechatronics, the requirements for construction machinery are constantly improving, and the traditional information transmission and management technology of construction machinery also presents the characteristics that it is difficult to meet the needs of the new era. GPRS should be applied to the information transmission of construction machinery in time. For example, in the signal control of single chip microcomputer, GPRS can remotely sense the alarm signal and fault signal sent by IPM, and when these signals are received, they can be transmitted to the corresponding maintenance department in time, and then the relevant instructors can provide technical guidance to the operators through remote communication to eliminate faults in time. So as to ensure the safe operation of construction machinery. The application of GPRS module in construction machinery mainly deals with the sending and receiving of information. When connecting to GPRS network, use GSM base station to connect, and then connect to the Internet. GPRS wireless communication is not covered in sea areas, mountainous areas, deserts and other areas, so we will choose alternate wireless communication methods, such as satellite communication. So as to provide safety guarantee for communication and data transmission of construction machinery anywhere. In addition, satellite GPS positioning can also play an important positioning function for the system. The location information of construction machinery can be released to the Internet in time and accurately. When connecting to the Internet, using the remote communication system, the maintenance program and operation program of construction machinery can be directly downloaded and customized to the server of the system, which brings great convenience to the management users, and at the same time, it can realize the timely monitoring of the use of construction machinery and the remote management of construction machinery. In the fault diagnosis of construction machinery, construction machinery experts can directly give remote guidance to maintenance personnel, so as to effectively eliminate the faults of construction machinery and realize the safe operation of construction machinery. In addition, when maintaining the remote operating system database, GPRS wireless communication can enable the service support personnel of the manufacturer to maintain it in time, and can also release the updated and upgraded related software to the users of construction machinery in time to promote the update and upgrade of construction machinery [4].
3 Conclusion
To sum up, through the in-depth analysis of the application of GPRS wireless communication in construction machinery, we can know that it is of great significance to use GPRS wireless communication for data information transmission in construction machinery at present, which can not only realize long-distance data transmission, break the limitation of space and time, but also reduce the use cost of construction machinery and provide guarantee for data transmission of construction machinery, thus promoting the healthy development of construction machinery and promoting scientific and technological progress.
References:
Xiao Wei. Remote data transmission system based on GPRS [D]. Taiyuan: Taiyuan University of Science and Technology, 20 12.
Li Xiaohai, Nan Xinyuan. Research on the application of GPRS wireless communication in centralized monitoring system for oil wells [J]. Chemical Automation and Instrument, 20 12, (1):130-132.
He Shoufu. Research on the Application of Wireless Communication Technology in Surveying and Mapping Engineering [J]. Communication Technology, 20 12, (7):94-96.
Liu, Wu, et al. Application of GPRS wireless communication technology in real-time monitoring system of long-distance pipeline water transmission [J]. Groundwater, 20 13, (6):93-94+ 1 12.
Fan Wener: Selection method of construction machinery Abstract: Reasonable selection of construction machinery should not only conform to the principles of economy, adaptability, advancement and safety, but also choose the appropriate model and model according to the specific conditions of the construction site, and sometimes it needs a reasonable combination of different machinery, supplemented by scientific management methods. Only in this way can we achieve good results.
Keywords: construction machinery; fundamental principle
1 Basic principles for rational selection of construction machinery
1. 1 Give priority to construction machinery with good economy.
The selection of construction machinery should be based on first ensuring the high-quality and efficient completion of engineering tasks, and at the same time ensuring the economical and practical use effect. The operation characteristics and performance of the selected construction machinery fully meet the engineering needs, and the operation quality is stable, without delay and waste, which is the greatest economy. In addition, mechanized construction is an inevitable choice to improve construction efficiency and engineering quality and reduce workers' labor intensity. In mechanized construction, it is a concentrated embodiment of economy to achieve the greatest results with the least resource consumption. Moreover, the economy is closely related to the following indicators. (1) output is an important index of construction machinery, which indicates the size of production capacity. It is necessary to select the output parameters suitable for the engineering quantity to avoid the polarization error of insufficient production capacity and excess production capacity; (2) Mechanical power is a dynamic index of construction machinery, which increases with the increase of output, and also increases the fuel consumption cost with the increase of power itself; (3) Higher fuel consumption and heavier weight of the whole machine also lead to increased cost; (4) The market price factor is more directly related to the economy. Whether buying or renting construction machinery, the price factor will affect the economy. In addition, the consumption of wearing parts also affects the economy. (5) For the optimization of the same type of aircraft, on the premise of meeting the production capacity, the ratio of production index to consumption index can be adopted to determine the selection within a reasonable range, and the method of quantitative selection can be adopted.
1.2 Select construction machinery with high selectivity and reliability.
With the development of science and technology, the progress of technology and the improvement of manufacturing level, the advanced nature and reliability of equipment are also constantly improving, from the past electromechanical and hydraulic integration technology to intelligent control. The use of new technologies, new materials and new processes has brought the advantages of high efficiency, low consumption, safety and reliability to these advanced construction machinery. Although the price of this advanced new product may increase, its overall comprehensive cost performance is still good. Those construction machinery with low configuration have many safety hazards due to their low efficiency, high failure rate and poor reliability. Therefore, we must conform to the development trend, choose advanced and reliable construction machinery, keep the advantage and initiative in the market competition, become the advanced leader and industry benchmark of mechanized construction, and provide hardware guarantee for high-quality and efficient completion of engineering tasks.
Choose 1.3 construction machinery with strong adaptability and good durability.
China is a vast country. In engineering construction, construction machinery is widely used, from south to north, from swamp to plateau, which requires construction machinery to adapt to both general construction environment and special construction environment, and its efficiency will not be greatly reduced because of changes in geographical location and natural conditions. The working conditions of construction machinery are complex, the working objects are changeable, and they often work under variable loads, which requires higher reliability and adaptability of machinery, greater flexibility and compatibility of technical parameters such as working capacity, productivity and mechanical power of construction machinery, and higher working capacity reserve coefficient, which can better adapt to the requirements of complex and changeable working conditions. Construction machinery is mostly used in places with harsh natural conditions and works in the open air all the year round, so it must have good dust-proof and corrosion-resistant performance, and often overload occurs, so it is necessary to choose durable construction machinery.
Choose 1.4 construction machinery with strong universality and professionalism.
On the premise of ensuring the quality of the project and meeting the construction progress, we should flexibly choose universal or professional construction equipment according to the specific content and stage of the project. In engineering construction, due to the limitation of the work site or the simplification and merger of working procedures, it is necessary to reduce the types and quantities of machinery, expand the scope of use of a certain machinery, achieve multi-purpose and multi-function as much as possible, improve the utilization rate of machinery, and facilitate the maintenance and management of machinery. Some engineering projects must use professional equipment to meet the engineering quality requirements, such as pavers, or some general equipment can be used, but the construction efficiency will be doubled after using professional equipment, such as graders.
Select 1.5 construction machinery with excellent safety performance and environmental protection performance.
Safety performance refers to the ability of machinery not to cause damage or harm to health during transportation, loading and unloading, installation, debugging, use and maintenance, while environmental performance refers to the fact that machinery will not cause serious pollution and other harmful effects to the surrounding environment and atmosphere during use, which meets the requirements of national environmental protection policies for machinery and equipment and achieves low noise, low pollution and low energy consumption.
2. Reasonable selection of construction machinery in combination with actual construction conditions.
Choose 2. 1 according to the project content.
(1) In subgrade earthwork engineering, site leveling and earthwork excavation are often faced, and it is necessary to choose bulldozers, excavators, loaders, graders and other machinery. In the case of small or medium quantity, excavator loader can be preferred. When the workload is heavy, you can choose a grader, which is very efficient. (2) When transporting earthwork, heavy trucks should be selected. At this time, in addition to considering the load and economic distance, we should also pay attention to the choice of good driving stability, good braking reliability, anti-falling body and dust-proof device.
2.2 Combination of soil conditions and weather season selection.
Soil quality and sunny and rainy weather often affect the choice of construction machinery. For clay with high soil water content and rainy season, crawler construction machinery can be considered.
2.3 Choose according to natural conditions and construction environment.
(1) In the case of bad natural conditions, poor traffic conditions and limited construction site, small construction machinery is preferred, and individual contracting is adopted in management, use and maintenance, and all expenses are borne by themselves, which is more economical. (2) For the construction machinery in plateau area, the engine must be a turbocharged diesel engine to overcome the phenomenon of insufficient power caused by objective factors such as lack of oxygen and thin air.
2.4 Combined with professional construction team and professional project selection.
(1) In pavement construction, professional pavers and rollers must be selected, and complete sets of equipment of professional mixing stations must be used to produce asphalt concrete for paving. (2) Shield machines for engineering tunnels, bridge erecting machines and cranes for bridge construction, drilling rigs and pile drivers for foundation treatment, etc. The selection should be made according to the specific requirements of the project.
3 Conclusion
Reasonable selection of construction machinery should not only conform to the principles of economy, adaptability, advancement and safety, but also choose suitable models and models according to the specific conditions of the construction site, and sometimes it needs a reasonable combination of different machinery, supplemented by scientific management methods. Only in this way can we achieve good results.
refer to
1, Study on Whole Process Engineering Cost Control of Construction Project Wang Zhengyu Hunan University 2005-1-1828
2. Research on engineering cost control method based on bill of quantities valuation model Zhou Jingyang 2006-04-0 128 Xi University of Architecture and Technology
3. Research on project cost management under the mode of bill of quantities valuation Lu Xiaoqing Southwest University 2007-04-2028.