Current situation and prospect of remote control lift rod telemetry remote control system

Time：2020-11-10 View：

Current situation and prospect
Telemetry remote control system is one of the systems needed by remote control lift rod.
Although the remote control and telemetry industry has occupied a large number of markets in economic, military, scientific research and other fields, there are still many markets waiting for it to develop. The implementation of the Western Development Strategy provides a huge new market for the remote control and telemetry industry. Many areas in the West are vast and sparsely populated, and their working and living environments are extremely harsh, which brings many difficulties to economic development. Using remote control and telemetry technology can improve people's working conditions, reduce field work, and monitor and control equipment which is far apart and scattered in harsh environment in a comfortable room with air conditioning. There are abundant water resources, oil and gas resources in the West. In the development of these energy resources, the establishment of unattended hydrological observation system, various water conservancy facilities, the monitoring and management of hydropower facilities and power network operating conditions and the monitoring of oil and gas pipelines are all markets to be occupied by the remote control and telemetry industry. Monitoring of environmental pollution in environmental protection, monitoring and management of high-grade highways in traffic facilities construction, monitoring and management of various pipe networks such as water, electricity, gas and heat in newly built towns, automatic monitoring of production lines in newly-built factories and mines and so on are all broad markets of remote control and telemetry industry.
With the vigorous development of urban public utilities, it is required to strengthen the development of sensors, increase their types, improve their accuracy and quality, and improve the reliability and accuracy of monitoring systems, in order to improve the security of the monitored pipe network and the scientificity of resource scheduling management; It is required to network the monitoring system of the urban public utility network, establish a regional office network, and uniformly schedule the resources of the monitored pipe network, reasonable utilization. These demands to improve the monitoring level of urban public utilities network have opened another market for remote control and telemetry industry.

 

 

Application in aerospace technology
The technology of detecting the parameters of objects separated by a certain distance and transmitting the measured results to the receiving place. The whole set of equipment that completes the telemetry task is called telemetry system. The transmission carrier used by aerospace telemetry is radio wave, so it is also called radio telemetry. Through telemetry, the working status and performance of the aircraft and its internal main equipment can be monitored in real time, and the physiological status of astronauts can be known timely. Analyzing telemetry data can evaluate the design, provide basis for improving the design and shorten the development cycle of aircraft.

 

Development Overview
Telemetry technology originated in the early 19th century, while aviation and aerospace telemetry technology began in the 1930 s and 1940 s respectively. Since then, telemetry has been widely used in the tests of aircrafts, rockets, missiles and spacecraft, which has greatly promoted the development of telemetry technology. From the 1950 s to 1960 s, with the development of communication theory, communication technology and semiconductor technology, telemetry technology has been widely used in modulation, transmission distance, data capacity, great progress has been made in measurement accuracy and equipment miniaturization. Since 1960 s, the remarkable features of the development of telemetry technology are: integration, solidity, modularization and computerized of telemetry equipment, and programmable telemetry and adaptive telemetry appear.

 

Space Telemetry remote control features
The transmission distance of aircraft telemetry is usually very long, especially space telemetry is usually hundreds of kilometers to thousands of kilometers, or even hundreds of millions of kilometers. It is impossible to install high-gain antenna on the aircraft, and the aircraft is moving, so telemetry stations generally adopt large automatic tracking antenna with high gain. In artificial satellites and manned spacecraft, telemetry, remote control, television and communication often share a radio channel in order to simplify equipment and improve system reliability. The telemetry parameters of multistage launch vehicles and spacecraft can reach hundreds of routes to several rovad, and the variation frequency of some parameters is as high as thousands of kHz, so the telemetry information is very large, many sets of telemetry equipment are often needed to work in parallel. Sometimes, magnetic recorder is needed to record data on the aircraft, and then the tape is recycled to obtain telemetry data. The characteristics of telemetry equipment on aircraft are: small volume, light weight, low power consumption, high reliability, and being able to work normally in harsh environment (low temperature, vibration, acceleration, particle radiation, etc.). In addition, the telemetry system should also have the characteristics of flexible use and real-time data processing. There is still a special problem in the telemetry of rockets and returning spacecraft: when re-entering the atmosphere, plasma sheath is formed around the aircraft, which strongly absorbs and reflects electromagnetic waves and interrupts radio telemetered signal. People often adopt two solutions: one is to temporarily store the telemetry data of this period of time, and then quickly resend it to the ground after flying out of the black barrier area, which is the "memory resend" method; the other is to use tapes to record the telemetry data during this period and recycle the tapes later. In addition, when the spacecraft gets out of the receiving range of the ground receiving station, or when the separated flame between multi-stage rockets causes signal interruption and missile underwater launch, these two methods are often used to obtain telemetry data.
With the development of computer and microelectronics technology, the new telemetry technology, namely adaptive telemetry, mainly includes variable format and data compression technology.
In cosmic discoveries, telemetry technology helped to understand the temperature, atmospheric composition and surface conditions of distant celestial bodies in the solar system; Telemetry instruments put on the enemy could send back a lot of information; Obtain flight data of missiles and aircrafts; telemetry technology is also needed to collect nuclear tests. In industry, telemetry technology makes many huge systems operate efficiently and safely, such as electric power, oil transportation, gas transmission system, city tap water, gas and heating system, etc. Telemetry technology is also a powerful means to study the living habits of animals. After telegraph transmitter with sensors, animals can study the dynamics of wild animals in the laboratory. Telemetry technology is also used in medicine, such as measuring the physical condition of astronauts and mountaineers. Doctors with good medical skills can serve tall timber of patients by using telemetry technology.