KeyWord : Hebei Guangyuan Construction Machinery Development Corporation ; Han Xiaoming ; Tong Xiaofan ; . Shijiazhuang Hebei 050061 Xinhe satellite positioning and other technologies. It can remotely detect the working status and position of the construction machinery, and can also conduct remote dialogues with the driver to achieve remote scheduling and command of mechanized construction. By using this system, construction machinery is sold. Leasing companies can strengthen the management and control of equipment; the use of construction machinery companies can improve equipment management and construction organization.
The remote monitoring system of construction machinery is the use of computer technology wireless communication technology and satellite positioning technology to monitor the operating status and construction schedule of the construction machinery on the construction site, and provide remote guidance to the driver, thereby improving the management level of the construction machinery. Mechanized construction organization. After more than two years of hard work, the research and development center of Hebei Guangyuan New Machinery Development Corporation basically completed the sweat debugging work of the system. The actual application system installed on the excavator is being designed and commissioned.
1 The purpose of developing a remote monitoring system for construction machinery is Hebei Yu Yougong, who is one of the most famous jade 1 and 1 marketing. 1 Business is interested in quickly. The use of this system can also increase the level of mechanical management and construction organization of the engineering machinery users. The role of this system is mainly as follows: ii. Improve the after-sales service level of the sales company The monitoring system can send the main transport hall state parameters of the machine to the computers of the monitoring center. Machine 1 drove back 1 to send questions and questions found in the survey to the monitoring center. The technical personnel of the monitoring and screwing center welcomed the analysis of the received mechanical working parameters and questions raised, and understood the working conditions of the machine in a timely manner. After discovering the hidden troubles of the user or the user, the user is notified in a timely manner, or the technicians are arranged to go to the service according to the construction progress. For frequent failures, it can even be done before users find out and ask questions. In addition, it can promptly answer questions asked by the driver during the use of the machine and provide guidance for the user. These can greatly improve the level of after-sales service.
1.2 Strengthening the management and control of leasing or installment machinery With the ever-increasing scale of construction machinery, the price of a single machine is also increasing. In order to promote sales, to rent on behalf of the sale or lease before sale fli; JjitriffiHfflifLtf.iJlIPI! i1IfLi! The rate of going is greater than 60. However, this kind of sales method is difficult to carry out in China. One of the important reasons is that some citizens have low credibility, and the leasing party cannot make periodic refunds according to the contract; the leasing party cannot reasonably use machinery during the leasing period. Reduce the equipment's residual value and damage the interests of the ancestral party.
The use of a remote monitoring system for construction machinery provides an effective means for sales companies to strengthen the management of equipment during the lease period or installment period. Through this system, the sales company can clearly understand the daily working hours of the machine. Work intensity The mechanical operating status of the working site. It can also issue a car lock instruction to machinery that is overdue without payment, so that the machinery cannot work or lose part of its functions. After the payment is repaid, the vehicle is issued and the normal operation is resumed.
1.3 Establish mechanical dynamic files. Scienti?c management machinery automatically returns the number of operating parameters from the machine to the number of stencil extensions to form a dynamic, detailed device file name. Equipment managers can analyze and predict faults based on changes in operating parameters. Arrangements for maintenance and repairs shall be made in the mechanical construction gaps in a timely manner. Repairs shall be made afterwards as preventive maintenance beforehand to improve the integrity of the construction machinery and improve the construction quality to ensure the construction progress.
1.4 Optimize the construction organization. Improve the efficiency of the use of machinery to meet the system, and put the machinery in real time. A number of work parameters such as test schedule 1 progress and its position were displayed in detail on the computer screen of the monitoring and dispatching center. Construction organization and management personnel can easily and intuitively understand the progress of construction, rationally allocate machinery, optimize construction organization, increase the utilization rate of machinery, thereby ensuring the construction period and improving economic efficiency. The system is particularly suitable for large-scale mechanization of multi-mechanical models 1.5 record construction parameters, provide basis for the project quality supervision or quality accident liability determination by installing the appropriate sensors on the machine or by sub-analysis of the sensor measurements Construction parameters. Such as road surface roughness mechanical tilt angle and so on. And store these parameters in the database of monitoring construction dispatch center. These parameters can be monitored and analyzed in real time, and can also be filed for future reference.
2 Technical scheme of remote monitoring system for construction machinery The remote monitoring system for construction machinery is mainly composed of an on-board computer and mechanical working state detection system, 3 satellite positioning signal receiving devices, a wireless data communication system and a monitoring and dispatching center.
2.1 On-board computer and mechanical working condition detection system Install necessary sensors on the construction machinery. The sensors transmit the mechanical operating parameters to the computer via an analog-to-digital converter. The on-board computer used by the system uses a 16-bit microcontroller to reduce the size of the entire detection system. The system is equipped with a LCD screen that can display the mechanical operating parameters to the driver. The LCD screen cooperates with several keys to realize human-computer interaction. The driver can tell the monitoring center about the faults he has encountered during the construction process so that he can get the necessary guidance and services.
2.268 Satellite Positioning Signal Receiving Device 15 The Wei Ji Positioning System Station is a global guardian positioning system implemented and managed by the United States. The system consists of 24 satellites orbiting the earth. These 24 satellites operate on 6 tracks respectively. They are constantly sending positioning signals to the Earth. On construction machinery, after receiving the satellite signal, the 3 positioning signal receiving device automatically calculates that the positioning error of the 12-channel receiver used in the latitude and longitude 1 system where the machine is located is less than 100, which can basically meet the needs of the construction machinery. High-precision, 3 system positioning accuracy can reach centimeter level, can meet the needs of the control of 1-way mechanical working device 2.
2.3 Wireless data communication system As the monitoring object is constantly moving, the vehicle-mounted computer can only transmit the detection data and position information through the wireless communication system. SJnUfjcJcglectojePiishingHouse.AUrightsreserved, http 2.3.1 Features of the satellite communication system of the satellite mobile communication system It covers a wide range of areas and can achieve overall coverage of a global or regional area. It is suitable for the characteristics of field construction of construction machinery, but communication equipment and communication costs are relatively expensive.
Guangyuan Company chose the maritime communication satellite system, which is characterized by the fact that the system is an international maritime ship rescue system and its operational reliability communication equipment is small in size. Use 1 segment for frequency multiplier. The rain bag is still able to work under poor conditions. It enables sufficient communication of the antenna to the antenna under conditions of rotation and elevation of the construction machinery. The satellite system's effective communication range is from latitude 7 to latitude 7 and the global overnight fee.
During the data transmission process, the on-board computer of the construction machinery transmits the mechanical working parameters and positioning information to the Haishu communications through the maritime satellite transceiver. The old accompaniment data of the guardian is over the sea. The Beijing ground station is located in the northern suburbs. The station called to send the data back to the maritime communications satellites, which then sent the data to the satellite transceiver monitoring center computer of the monitoring center to read the data from the satellite transceiver. The monitoring center's computer sends the test data and analysis results and the places marked with mechanical positions to the Internet for easy access. It is also possible to send the mechanical position of the detection knot to the fingertips in the form of Han. The above data channel is dual 2.3.2 with elbow down mobile communication system uses 03 cubie short message mode to transmit data, which is characterized by lower communication costs than satellite mode. However, this communication system is point coverage.
In construction sites far from towns, there is no way to communicate.
When monitoring the system design, take the length of the satellite and elbow system. The on-board computer first uses the elbow mode to communicate. If it is unsuccessful, it will automatically use the 1-way communication. Another feature of this communication mode is that the construction machine can be directly connected to the Internet. After the Internet website has signed an agreement with China Mobile Communications, it can send and receive short messages directly. In this way, a computer that accesses the Internet can log on to the website and communicate with the onboard computer on the construction machinery in a short message manner. You can check the working status of the machine and order the on-board computer to perform the specified work. Realize the construction machinery online.
Data Transfer Process 2. The computer on the construction machine is used to communicate through the Industrial 3 Rivers campus. Transmission of mechanical operating parameters and positioning information to China Mobile's short message center After that date, the data transmission can be divided into two schemes. The short message center sends the data directly to the monitoring center's 031 communication module, and the monitoring center's computer slave module Read data. The computer in the monitoring center sends the test to the Internet. The short message center transmits the data to the designated website. The monitoring center computer reads data from this site. The above data transmission channel is also bidirectional.
65 Positioning Satellites Maritime Communications Satellites 03 Positioning Satellites 2.3.3 Short Wave Communication Modes Both satellites and 0.3% of the two communication modes use public communications networks. However, for large-scale centralized projects, short-wave radio stations can be established on their own, and data can be transmitted using their own established communications networks. The radius of communication range can reach more than ten kilometers. This can improve communication costs. However, there is a need to apply for frequency points to the Wireless Communication Committee.
2.4 Monitoring and Control The Crushing Monitoring Center is the management center for the entire monitoring system. Its role is to issue instructions to on-board computers as needed. Instructions included. The number of project monitoring and the time interval, and spleen, suspected of data returned by the on-board computer. After calculating the data received by the female, 1 move into the database. The computer automatically analyzes the mechanical operating parameters. It was found that the super-scale defamatory report carried out numerical analysis on the data in the data volume, looking for the law of mechanical deterioration and forecasting the failure. To handle remote user monitoring requests. The remote user here refers to the unit or individual owner who commissioned Guang Yuangong to monitor its machinery. They can check the operating status and position of their own machines through a networked or self-developed network. They can also set their mechanical monitoring frequency via the Internet or a card machine. It can even be detected immediately by the monitoring center commanding its mechanical on-board computer. Within a few minutes, the working parameters of the machine that is being constructed on the remote site can be displayed on the screen of his computer or mobile phone. If only the 03 river monitoring machine is used, the monitoring center can be built on Guangyuan's website and become a virtual monitoring center. This can greatly reduce the monitoring center's violation costs.
3 Construction Machinery Remote Monitoring System Working Accuracy Testing System Measurement accuracy is ugly 50 items, 3 positioning accuracy is 310,1 Marine satellite coverage is ±70 讳C; Chinese SMS is used to collect sub-operation parameters in 305,3 The time of collecting the sub-operational parameters for the maritime satellite method is 34 claws; the number of user-selectable standard questions is 256.
The above is a brief introduction to the remote monitoring system for construction machinery. In the process of system development, the author felt that although the manufacturing level of domestic construction machinery was behind some, the level of domestic computer and communication technology was similar to that of advanced technology. Therefore, the technical level of the monitoring and unscrewing system issued by the company should also be able to synchronize with the international advanced level.
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