The development history of wireless remote control, the application field of wireless remote control

Research on wireless remote control technology based on PLC (available on Google)**.

Charges) detailed catalogue.

Abstract. English Digest.

Author's Statement. Chapter 1 Introduction.

Background of the research project.

Proposal and significance of the topic.

The content of the research project.

An overview of wireless remote control technology.

The development and status quo of wireless remote control technology.

Digital wireless communication technology.

Chapter 2 PLC wireless remote control system scheme design.

The composition and working principle of the wireless remote control system.

Classification, characteristics and application range of wireless remote control system.

Comparison of radio remote control with remote control of other carriers.

Schematic design of wireless remote control communication system.

Design requirements for this PLC wireless remote control system.

Analysis of the wireless remote control system scheme.

Evaluation of the system programme.

Key issues in the design of wireless remote control systems.

Subsections of this chapter.

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Wireless remote control technology is widely used in industrial equipment control, agricultural temperature and humidity monitoring, and farmland irrigation, especially in the application of smart home, which can be said to accelerate people's pursuit of modernization and science and technology.

Radio remote control is used in many fields due to its advantages of long transmission distance, strong anti-interference ability, and non-directionality.

Its development process is tortuous and slowly moving forward, due to the complexity of electrical appliances, the huge amount of equipment to be sent to the judgment, the difficulty of debugging, etc., it has been limited in the civilian field, with the accelerated development of modern electronic technology, these problems have been solved, so that it has a strong vitality.

Wireless remote control transmitter receiving circuit radio remote control transmitter is a micro transmitter, its transmission frequency is 315MHz, when the 12V power supply is powered, the remote control distance is 100m, and the working current is only 4mA.

The radio receiver is a receiver and demodulator like a high-frequency head of a TV, with a working voltage of 6V, a waiting working current of 2mA, and a receiving frequency of 313MHz.

They can be used to easily make a variety of radio remote control devices, which have the advantages of miniaturization, long transmission distance, low power consumption, and strong anti-interference ability.

It can easily replace infrared and ultrasonic transmitters and receivers.

The wireless remote control transmitting and receiving circuit circuit, four transmitter tubes, VI and peripheral components CL, C2, Li, L2, etc., constitute a frequency mining and staring rate of 315MHz ultra-high frequency transmission circuit, which is transmitted to the air through the loop antenna L2. The antenna L2 is made of silver-plated wire or enameled wire with a diameter of 24 mm long x 9 mm high.

It is impossible to know who invented the first remote control, but one of the first remote controls was developed in 1898 by a pure inventionist named Nikola Tesla.

The first remote control used to control the TV was developed in 1950 by an electrical appliance company called Zenith in the United States, and it was wired at first.

In 1956, Rob Adler of the United States developed the first modern wireless remote control device, which used ultrasonic waves to control the channel and volume, and each button emitted a different frequency. However, this device can also be interfered with by ordinary ultrasound, and some people and animals can hear the sound of the remote control.

In the 80s of the 20th century, after the development of semiconductor devices that transmit and receive infrared rays, ultrasonic control devices were slowly replaced. Even as other wireless transmission methods such as Bluetooth continue to be developed, this technology is still widely used today.

Now, there are many remote controls on the market, such as automobiles, electric devices, etc., compared with infrared remote controls, industrial remote controls are simple to make, remote control distance, strong penetrating ability, safe and reliable, and are loved by the majority of electronic enthusiasts!

Car remote control.

1. Industrial crane: Industrial crane is one of the most widely used fields of remote control system, taking Germany as an example, accounting for about 40% of the annual output of remote control system; In particular, metallurgy, automobile manufacturing, paper mills, material warehouses and other new vehicles are almost all equipped with industrial wireless remote controls;

2. Truck crane and truck crane: Usually, the remote control system of large truck crane is also equipped with a data feedback device, which can display the operating parameters (such as load, crane arm length, load torque, oil temperature, pressure, angle, etc.) on the display screen of the transmission system, and the operator can monitor the crane according to the display data;

3. Concrete pump truck: When the concrete pump truck is operated, because the console is tens of meters (or even hundreds of meters) away from the pouring operation surface, the traditional operation mode requires several people to cooperate, and the performance of the concrete pump truck is limited due to low efficiency; For large-scale pump trucks with long distances and large displacements, the contradiction is more prominent; The industrial wireless remote control can maximize the performance of the whole machine, and the pump truck driver can use the remote control system to operate the various actions of the pump truck in turn after driving and positioning at the work site, such as the left and right rotation of the distribution rod, the luffing and lifting of the multi-stage rod, etc. The operator can carry the launch system, away from the pump truck console, and stand directly near the hose nozzle to control the action of the distribution rod and the operation of the concrete pump;

4. Mining machinery: For the occasion of low visibility in the mine, the industrial wireless remote control equipped with a feedback device can be used to control the hydraulic machinery. Even in places with low visibility and harsh environments, it is easy to control heavy rock drill rig drilling operations.

The operator can choose the closest spot to drill the hole in alignment, rather than having to stay on the operator's table at a distance of ten meters from the drilling site. The radio control unit adopts IP65 protection standard and is fully adapted for use in wet and salty environments. It greatly increases the safety, comfort and accuracy of operation, saves investment and improves efficiency;

5. Special machinery such as slag removal loader in steelmaking plant, using industrial wireless remote control to remotely control the loader, without changing the existing manual operation mode, 100% simulation of the mechanical power performance and operation function of the original crawler loader, to achieve the purpose of unmanned completion of slag removal operation. The operator has the freedom to choose the best visual position with a lightweight transmitter, and the remote-controlled loader runs freely during the desilting operation.

The successful application of the remote control loader has eliminated the hidden dangers of accidents caused by the harsh environment, unclear vision and high temperature slag falling in the past, freed the operator from the harsh environment, improved the efficiency of slag removal operation, improved the working environment of metallurgical workers, and reduced the labor intensity of workers;

6. Construction tower cranes: more than 60% of the building slewing tower cranes in Europe and North America are controlled by wireless remote control, which not only saves costs in equipment manufacturing (no aerial operating platform), but also fully guarantees safety and reliability, and improves construction efficiency;

7. Other aspects: With the development of industrial wireless remote control technology, industrial wireless remote control has been widely used in loaders, shunting locomotives, hydraulic machinery and mobile vehicles, port loading and unloading ship machines and other equipment, and the market prospect is extremely broad.

At present, the mainstream domestic remote control includes: imported - Sweden Okeston, Taiwan Yuding, Taiwan Apollo, Germany HBC, Sweden Scanreco, Germany Hyde, Italy AUTEC, Dela Ran National NBB, Spain Ikesi (Ikusi), etc.; Domestic - Qinhuangdao Yijiu, Shangpeng Bureau or Haiji Chain Wujing, Shanghai Weiketai, Nanjing Broad & Bright Yutu, etc.

1. Industrial crane industrial crane is one of the most widely used areas of remote control system, especially in metallurgy, automobile manufacturing, paper mills, material warehouses and other new cranes are almost all equipped with industrial remote control devices, domestic new projects such as Baosteel Phase III, Pearl River Iron and Steel, Shanghai Volkswagen (Santana), Shanghai General Motors (Buick), Nanping Paper, Jinle Paper and other projects, driving wireless remote control has been the standard configuration of driving.

2. Truck crane, truck crane Usually, the remote control system of large truck crane is also equipped with a data feedback device, which can display the operating parameters on the display screen of the departure system, and the operator can monitor the crane according to the displayed data.

3. Concrete pump truck When the concrete pump truck is operated, because the console is dozens of meters away from the pouring operation surface, the traditional operation mode needs several people to cooperate, and the efficiency is low, which limits the performance of the concrete pump truck; The industrial remote control device can maximize the performance of the whole machine, and the driver can carry the remote control system to operate the various actions of the pump truck in turn after driving and positioning at the work site.

4. Mining machinery The visibility of the mine is low, and remote control hydraulic machinery equipped with feedback devices can be selected. Even in places with low visibility and harsh environments, it can facilitate heavy-duty rock drill rig drilling, and the full text of the rock drill's fault information is displayed on the remote control display. It greatly increases the safety, comfort and accuracy of operation, saves investment and improves efficiency;

5. The crawler slag removal loader adopts the industrial remote control device to carry out remote control transformation of the loader, and simulates the mechanical power performance and operation function of the original crawler loader on the premise of not changing the existing manual operation mode, so as to achieve the purpose of unmanned completion of the slag removal operation. It eliminates the hidden dangers of accidents caused by harsh environment, unclear vision and high temperature slag falling in the past, improves the efficiency of slag removal operations, improves the working environment of metallurgical workers, and reduces the labor intensity of workers. With the development of industrial remote control technology, remote control devices have been widely used in loaders, construction slewing tower cranes, crane locomotives, hydraulic machinery and mobile vehicles, port loading and unloading ship machines and other equipment, and the market prospect is extremely broad.

1. The application of industrial cranes.

2. Extensive use of truck cranes.

3. Extensive use of mining machinery.

Wireless remote control refers to the realization of non-contact remote control of the controlled target, which is widely used in industrial control, aerospace, and home appliances. Wireless remote control and wireless transmission systems increase the freedom of movement compared to wired and infrared devices. As a result, wireless remote control devices and wireless transmission systems are increasingly used in the industrial field.

The advantages over cable connections are low installation costs (no wiring, no underground works, no cable trays), increased flexibility and reduced maintenance costs.