Entertainment engineering firm LA ProPoint works with advanced PC Control technology to save several weeks of system design and installation time
By Shane Novacek
ABOVE: The Great Wolf Lodge resort in Bloomington, MN, near the Mall of America features the new animatronic Northwoods Friends theater as designed and commissioned by LA ProPoint.
Immersive entertainment experiences are now appearing in spaces that were previously not considered in venue design. Take, for example, the lobby at multiple locations of Great Wolf Lodge resorts. To add yet another focal point of fun for guests, many Great Wolf Lodge lobby areas now include high-tech theaters with automated on-screen components and animatronic character elements choreographed together with animated cartoon programming. This is the latest example of how Great Wolf Lodge makes extra efforts to extend entertaining activities into every corner of the company’s facilities. The nationally known chain of indoor waterparks offers countless kid-friendly activities, including the main event water slides and attractions.
To successfully implement the new lobby theaters, a substantial amount of automation and networking technology needed to be installed within a limited footprint. The entertainment engineering experts at LA ProPoint handled design and installation of the project. Based in Sun Valley, Calif., LA ProPoint specializes in a wide range of products and services for entertainment and AV installations across North America. The company tackles all kinds of projects from automated stage machinery to stage rigging, R&D and prototyping services for clients. High-profile LA ProPoint clients include theme park and theatrical powerhouses, from Disney and Cirque du Soleil, to major sporting venues such as AT&T Stadium (home of the Dallas Cowboys), and even museums such as California Science Center.
The convergence of AV and entertainment technologies
LA ProPoint utilized PC-based control technology to balance AV and animatronic functions in the Great Wolf Lodge lobby installations in a cost-effective manner. To start, Great Wolf Lodge commissioned four installations in 2017 with the option to add more in 2018. Because the technical demands for the Great Wolf Lodge animatronic show were complex, LA ProPoint had to leverage expertise developed from a wide range of applications to meet the performance specifications.
The new animatronic show is based on the Great Wolf Lodge characters, a merry crew of singing and dancing woodland creatures. The Northwoods Friends lobby show is divided up into multiple sequences with two main acts and an intermission segment, which acts as a screen saver of sorts.
“Productions like the animatronic Northwoods Friends show are so exciting because they demonstrate how AV and entertainment technology continue to overlap,” said Richard Adams, Automation Engineer at LA ProPoint. “This goes far beyond a projection screen for a cartoon now. Today we project video over moving scenery so facilities such as Great Wolf Lodge can expand traditional lobbies into engaging entertainment environments that enhance the overall experience.”
To be successful in the competitive entertainment industry, it’s important to be highly responsive and flexible. Each client has unique needs, so a wide breadth of application knowledge helps the company’s engineers tackle problems from many different angles, and keep the work in-house. “LA ProPoint specializes in ‘mission impossible’ and to maintain our flexibility to take on any entertainment project, LA ProPoint provides all services and support in-house, rather than outsource,” said Adams. “This covers everything from rigging teams to our automation department that provides software and electrical engineering services to our clients.”
A Beckhoff CP6706 Panel PC with 1.46 GHz Intel® Atom™ processor running TwinCAT 3 software automates the Northwoods Friends theater. All photos courtesy Beckhoff
Showtime for industrial automation
The Northwoods Friends animatronic theater implemented by LA ProPoint is fully automated by a Beckhoff PC-based control platform. One CP6706 Panel PC with 1.46 GHz Intel® Atom™ processor running TwinCAT 3 software automates the Northwoods Friends theater. TwinCAT handles the control for all aspects of the theater, including the stepper motor-driven animatronic elements and all the AV equipment. A variety of TwinCAT 3 software packages are used in the lobby installations at Great Wolf Lodge, including the PLC/NC and PTP libraries for control, PLC HMI for visualization and the TCP/ IP communication library. All TwinCAT 3 programming was written using Structured Text (ST). Using Ethernet TCP/IP, the Beckhoff control system connects to three different projectors from two different manufacturers, a Blu-ray player, a high-end sound mixer and three BrightSign media players. “The most important aspect backing our decision to use TwinCAT is the ability to program everything in one universal software platform,” Adams said.
To establish communication specific to AV and entertainment applications, TwinCAT SMPTE timecode interface can extract timing information sent by a SMPTE master in order to provide an absolute time reference for media metadata in the application. “The Society of Motion Picture and Television Engineers defined the SMPTE timecode interface for audio and video synchronization, so it says a great deal about the suitability of TwinCAT in entertainment applications. This is significant from a controls engineering perspective because traditional PLC platforms just don’t go there,” Adams added.
The Beckhoff system connects to the reception desk at Great Wolf Lodge via the CP-Link 4 one cable connection technology to a compact CP2907 Control Panel with 7-inch display. “Using CP-Link 4, we only had to run a single Cat 6 cable to provide power and data from the control room to the front desk,” Adams explained. The intuitive HMI developed in TwinCAT by LA ProPoint offers easy operation for all resort staff – from front desk personnel to AV and maintenance staff.
LA ProPoint implemented EtherCAT industrial Ethernet for communication with the peripheral devices behind the scenes of the Great Wolf Lodge theater. For example, LA ProPoint uses a Beckhoff EL3702 EtherCAT oversampling terminal that “listens” to the analog signals broadcast from an SMPTE master to slave devices. Additional EtherCAT I/O terminals handle digital and analog data acquisition, and directly connect with stepper motors for compact motion control. “Another key deciding element to use EtherCAT Terminals was how simple the I/O interface is for motor control and drive technology,” Adams said. “The EL7041 stepper terminal was very easy to connect with the stepper motors for control. Instead of programming, mounting and wiring eight different motor controllers, everything is programmed centrally in TwinCAT and motors are cleanly wired back to DIN rail-mounted I/O.” The pulse-wide modulation (PWM) output stages in the EL7041 cover a wide range of voltages and currents. The terminal can be adjusted to the motor and application by changing just a few parameters, and 64-fold micro-stepping ensures quiet and precise motor operation in the application.
Part of the animatronic theater frame lowers, and a moving screen component showing a ladder rises as a Northwoods Friends action sequence plays out.
Savings to howl about
Overall, LA ProPoint viewed its first-ever PC-based control application as a success and plans to move forward with more installations based on the architecture in a variety of future applications. “Programming the stepper control centrally in TwinCAT saved about a week in programming and troubleshooting time when compared with alternative approaches,” Adams reported. “Many applications in our industry require high investments in terms of motor control engineering hours, so the one-stop programming in TwinCAT and easy integration of the stepper I/O terminals with incremental encoder interface made our job much easier.”
With the EtherCAT I/O system overall, LA ProPoint reduced system footprint, which was highly important for the space-limited control room behind the theater. LA ProPoint also credits the EL3702 and EL7041 EtherCAT Terminals in particular for reducing wiring while improving system communication and control of media equipment and stepper motors. “In addition to our software development savings, PC-based control from Beckhoff also saved significant time in panel design and installation. We are certain it saved several weeks of design and development time in this regard.”
By promoting engineering and design efficiency in all areas, LA ProPoint has made new attractions like the Northwoods Friends theater more affordable than ever for venues of all kinds. Moreover, when resorts like Great Wolf Lodge embrace advanced automation technology in groundbreaking new areas, guests and audiences will continue to find high-quality entertainment in entirely new spaces. • • •