Control Requirements Flashcards
A _____ or master control unit is the “brains” of the control system, typically consisting of a computer processor that communicates with a fixed set of devices on a local area network (LAN).
central processing unit
A _____ is a graphical and functional method of device control that uses programmable command sequences.
control interface
_____ are the most popular style of control. They are inexpensive, hard to lose, and easy to operate. They offer the most flexibility and style and can be wired or wireless.
A. touch-screen panels
B. Control panels
C. Simple wired panels
D. Handheld remotes
A. touch-screen panels
_____ incorporate push buttons, knobs, and sliders. They are the predecessor of touch-screen panels and can still be found and selected for use in professional AV environments.
A. touch-screen panels
B. Control panels
C. Simple wired panels
D. Handheld remotes
B. Control panels
_____ are the most common user interfaces. They are used to control devices within a typical home and can include wall switches and doorbells. In professional AV environments, they provide media player access and control.
A. touch-screen panels
B. Control panels
C. Simple wired panels
D. Handheld remotes
C. Simple wired panels
_____ and app-enhanced mobile devices may also be used in conjunction with other types of control interfaces. They don’t typically include programmable control or graphical user interfaces.
A. touch-screen panels
B. Control panels
C. Simple wired panels
D. Handheld remotes
D. Handheld remotes
_____ allows a user to determine which actions are possible and where or how they can perform them using a device.
Discoverability
_____ gives users a clear sense of how a product or device is supposed to be used.
Understanding
_____ considers user behaviors, capabilities, and needs before tech- nology and creativity. According to this approach, the design process begins without specifics and focuses on what the user might look for when interacting with devices.
Human-Centered Design
Characteristics of human-centered design:
Build intuitive interactions between people and their environment (for example, mail slots fit only envelopes, and balls allow for throwing or bouncing).
A. Affordance B. Signifiers C. Constraints D. Mapping E. Feedback
A. Affordance
Characteristics of human-centered design:
Signal what actions are possible and how they should be done (for example, doorknobs or handles can signal turning, pushing, or pulling).
A. Affordance B. Signifiers C. Constraints D. Mapping E. Feedback
B. Signifiers
Characteristics of human-centered design:
Communicate what the design can or cannot do (for example, push versus pull on a door).
A. Affordance B. Signifiers C. Constraints D. Mapping E. Feedback
C. Constraints
Characteristics of human-centered design:
Lay out the design for clear understanding (for example, turn wheel left to turn left).
A. Affordance B. Signifiers C. Constraints D. Mapping E. Feedback
D. Mapping
Characteristics of human-centered design:
Communicate the results of an action. It must be immediate, informative, and specific (for example, elevator up/down buttons).
A. Affordance B. Signifiers C. Constraints D. Mapping E. Feedback
E. Feedback
A(n) _____ is the vehicle that connects devices to the control system CPU. For example, a touch panel would be a control interface, and the _____ could be RS-232 or Ethernet.
control point
Control Points
The simplest form of remote control by opening/closing a circuit.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
A. Contact Closure
Control Points
The analog form of data control. The voltage of a specific parameter is applied to the control point to adjust the level by a specific ratio of voltage value to the device’s level.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
B. Analog Voltage (voltage ramp generator)
Control Points
A one-way communication available in optical and wired formats. It most commonly uses infrared, which is a pattern of light pulses emitted from a light-emitting diode that is in turn recognized by the device’s control point. also capable of bi-direction.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
C. Serial Communication
Control Points
Can be bi-directional and is mostly used by the user interface to the control system. Transmission has to be tested to prevent interference issues.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
D. Radio Frequency (RF)
Control Points
Works on the basis of transmitting packets of digital information (control protocols).
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
E. Network
Control Points
Similar to network but allows for communication between the Internet, control components, applications, and so on.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
F. Internet Protocol (IP)
Control Points
Considered a stand-alone type because of the incredible flexibility and applications it provides, although it really is a data control type. It can be used to address enterprise-wide support issues and link global resources together.
A. Contact Closure B. Analog Voltage (voltage ramp generator) C. Serial Communication D. Radio Frequency (RF) E. Network F. Internet Protocol (IP) G. Ethernet
G. Ethernet
Network Control Points
Bi-directional between two devices.
A. Single ended
B. Broadcast
C. Multidrop
A. Single ended
Network Control Points
A single transmitter of information and multiple receivers. All receivers “hear” the traffic but respond only to traffic directed to itself.
A. Single ended
B. Broadcast
C. Multidrop
B. Broadcast
Network Control Points
Multiple transmitters and multiple receivers all interacting on the same wire/cable. This subtype can be complex and requires careful setup.
Its formats are RS-232 and RS-422.
A. Single ended
B. Broadcast
C. Multidrop
C. Multidrop
_____ is a balanced connection and provides increased distance capacity via differential signaling.
RS-422
Differential signaling can transmit data at rates of up to __ megabits per second or may be sent via cables up to ____ long.
10 / 4921 ft (1500 m)
____ is a personal area network (PAN) wireless technology in the 2.4 gigahertz range that uses mesh topology to link multiple devices and can be used for sensors; lighting systems; heating, ventilation, and air conditioning (HVAC); and more.
ZigBee
A ____ system consists of a single CPU and many devices and is the most common configuration in the field.
A. Centralized
B. Client-server
C. Distributed
A. Centralized
In a ____ system, the client has no associated control surface or GUI (touch panel, button pad, UI), so it relays only the commands from the control CPU.
A. Centralized
B. Client-server
C. Distributed
B. Client-server
A ____ system has multiple independent systems linked together by a data network. If the network link fails, each system can still function independently, but the tasks between the systems are lost.
A. Centralized
B. Client-server
C. Distributed
C. Distributed
A(n) _____ is an itemized list of devices to be controlled that helps to organize what needs to be done by everyone on the project, such as the client, programmers, designers, and facility engineers. It contains the required actions for each device and interconnection information, such as the control point and connector type.
control functions script
A(n) _____ assists the designer in creating a control system that meets the required client needs.
control functions script
