The music fountain is a popular waterscape art performance. It has modern technology that combines music, lighting and multimedia. It also has a cultural heritage that reflects the development of the city and the human environment. It is a comprehensive waterscape that combines many elements. Modern music fountains are complex in structure, diverse in performance, rich in variety, and need to be perfectly synchronized with music. Therefore, the computer control system becomes a complete information data that can complete the automatic selection, synchronization demonstration, control and storage of music fountains. A carrier that processes and monitors the operational process. Nowadays, with the development of multimedia and artificial intelligence, computers have evolved from pure music fountain control to computer integrated systems for music management, computer-aided soundtrack and multimedia simulation of music fountains. Modern music fountains have six main technologies in control:
1. Power supply system for music fountain water pump
Large-scale musical fountains use a variable-frequency power supply to supply a large amount of electric motors, so the number of pumps used in musical fountains will be large. In order to meet the same time, they need a variety of power supply frequencies, it is necessary to use the frequency converter as a variable frequency power supply, but in this case, it will cost a lot of investment. Centralized rectification can be adopted to convert the alternating current into direct current, and then an inverter is used for each musical fountain of the musical fountain to convert the direct current into alternating current power of various frequencies to supply power to the musical fountain pump motor. This is the best solution for saving energy and reducing investment in music fountain control equipment.
2. PWM speed control of music fountain pump
There are two main ways to control the sound of the musical fountain: (1) speed regulation of the pump motor; (2) control the opening and closing of the nozzle valve. The valve control has the advantage of fast response, suitable for the rhythm of easy jumping; while the water pump speed control under the computer control is varied, it is more suitable to match the lyric and elegant melody. For the general music fountain water pump speed control does not need to use high-precision frequency converter, as long as the 10:1 speed range of the AC voltage speed control system can meet the requirements.
3. Positioning and speed control of the rocking mechanism of the music fountain
The change in the position and speed of the swinging musical fountain is an important factor in the swinging water type. The position sensor of the musical fountain swing mechanism should be a waterproof, non-contact positioning device. A Hall sensor induced by a magnet, a fiber-guided photoelectric sensor, or a rotary position encoder attracted by a magnet is often used.
4. Computer automatic control of music fountain
The music fountain control software includes automatic music selection, water type and music synchronization, water type program demonstration, color light program demonstration, water type volume follow-up, water type rhythm follow-up, sound delay control and so on.
5, music fountain computer-aided soundtrack software
The music fountain computer-aided soundtrack software consists of an artificial intelligence expert system and a music fountain soundtrack knowledge base. It provides a simple question-telling statement to describe the "knowledge" of the piece or piece of phrase, such as the type of music, the pace of the rhythm, the level of the mood, the number of people playing or singing, the type of instrument, and so on. Several music fountain demonstrations were then proposed by the computer for the operator to select.
6, multimedia music fountain simulation and real-time monitoring
When the music fountain multimedia virtual simulation, the script will be presented on the computer screen according to the program specified in the music play data table, and keep synchronized with the music.
The music fountain multimedia virtual simulation can also be used as a real-time monitoring of the music fountain presentation, or on the big screen.
