Music Dancing Water Fountain System
There are various forms of musical fountains. Based on the author's experience in designing and manufacturing musical fountain control systems, it can be roughly divided into the following categories:
※Viewing fountain: music program control fountain (divided into waterscape control, lighting control, waterscape+lighting control, etc.), running fountain, water curtain movie, laser show fountain, volcano fountain, program-controlled small scene, atomized landscaping, stage Mobile water features, sculpture fountains, waterfalls, super high fountains, etc.;
※Game-participating fountains: jumping fountains, pearl fountains, fountain maze, voice-activated fountains, stepping fountains, follow-up fountains, time tunnels, etc.;
※Family fountain landscape.
Music fountain involves a wide range of professions, including music signal analysis, water supply and drainage, electrical control, communication, camera technology, computer automatic control, three-dimensional animation production and network communication technology. Therefore, the music fountain industry is a very comprehensive industry. The successful implementation of a musical fountain project requires the close cooperation of the above-mentioned professional engineering and technical personnel.
The flow chart of music fountain control is as above
1) Collection and processing of music signals:
In this process, the music signal collection is completed by the music digital acquisition analyzer with DSP chip. While completing the data collection, the music collection analyzer will collect the incoming signal according to the algorithm of analyzing the music. The elements and characteristics of the signal are transformed into digital signals with specific rules and output to the central control station-industrial computer. (The music collection analyzer is a name defined according to the function completed by the device. In fact, the device may not be this name, but another name. In the above flowchart, the part that completes the collection and transmission of music signals It is a hardware device, but the part that completes the collection and analysis of the music signal in the actual process can also be completed by the configuration software special driver or the special data acquisition program developed under the configuration software platform.
2) The processing process of the harmonious correspondence between the water shape in the music fountain and the digital signal output by the music collection analyzer:
In this process, the operator should configure the corresponding water shape for the music according to the melody of the playing music. The configuration can be stored in the configuration software program, and the parameters can also be modified as needed. In this process, the following modes can be defined according to the needs of users:
※Music auto mode
※Music random mode
※Music manual mode
※No music random mode
※No music manual mode
Hardware configuration:
The hardware configuration is: industrial computer or touch screen man-machine interface + PLC + frequency converter with network communication function.
Note: Due to the scattered locations of the various control mechanisms of the musical fountain, the user has a real-time control
The requirements are also stricter, so in the project, the industrial computer and PLC adopt the standard TCP/IP communication protocol to exchange data with the communication method of industrial fast Ethernet.
5. Brief introduction of music fountain control system:
The control system is mainly composed of industrial control computers, programmable controllers, inverters, control cabinets, etc.
※The main process of the control system:
The industrial control computer is used as the user terminal. The operation interface and control program are installed in the industrial control computer. The control program is transmitted to the programmable controller. The programmable controller controls the actions of the inverter, solenoid valve and light. The control cabinet and the inverter Control the corresponding load action.
※Industrial control computer:
For many years, our company has been using industrial computer as the system control workstation, mainly because it has the advantages of stable performance, high speed, strong adaptability to environmental conditions, good anti-vibration and anti-interference.
※Programmable Controllers:
The most important thing for the success or failure of a musical fountain is to see whether the water jets have a musical sense. The main function of the programmable controller is to process the music signal, and then transmit the processed signal to the next level of control equipment, so that you can control the required water type and lighting to make dynamic changes in accordance with the rhythm of the music. The musical fountain truly achieves the artistic effect of water ballet. The characteristics of accuracy, precision, speed, stability and multi-point control of the programmable controller have made it an indispensable equipment in the modern high-tech music fountain project.
※Inverter:
The frequency converter receives the control signal output by the PLC through the ommunication network in real time to make the speed of the water pump change synchronously with the music, so that the sprayed water column can fluctuate with the height of the music and the rhythm of the music, achieving the special artistic effect of the music fountain . When selecting the inverter, you must pay attention to: inverter signal response speed, start and stop torque, DC bus apacitor filter parameters, inverter start and stop times per unit time index, electromagnetic compatibility index, reliability and other parameters. As network communication methods are becoming more and more popular nowadays, when selecting inverters, you should choose inverters with communication protocols and functions such as profibus and modbus. This control method has the characteristics of high sensitivity, good control effect, long service life, safe and reliable work.
※Control cabinet:
The fountain special power distribution and control system is adopted, which is more suitable for the characteristics of waterscape operation. According to the number of control cabinets, distributed power and load properties, the power distribution cabinet can provide a power upply loop for each control cabinet. The entire waterscape control system adopts the GGD standard low-voltage cabinet box, which is of high quality and is a product qualified by the national electromechanical professional certification and CCC certification. The main components are imported and domestic high-quality and reliable products. Practice over the years has shown that it not only conforms to national standards, has sophisticated craftsmanship, and has multiple protection functions, ensuring safe and reliable operation.
