Control
The system consists of multiple devices.
Multiple devices can be interlocked with only one trigger.
This article introduces the "control" function that realizes this interlocking.
Multiple devices can be interlocked with only one trigger.
This article introduces the "control" function that realizes this interlocking.
Example of "Control"
In designing the system, it is important to design the flow of interlocking as well as audio signal.
Unlike audio signals, control for interlocking is a slightly confusing concept. Here are some examples.
Unlike audio signals, control for interlocking is a slightly confusing concept. Here are some examples.
In the system shown above, user can select the broadcast destination by pressing the mic key.
Mic is connected not only the voice line but also the control line for operating the voice line connection point in the matrix device. When the user selects the broadcast destination key and presses talk key, the “signals” for controlling the connection point of matrix are output from the microphone. In the diagram above, the control signals are shown as dotted lines. Details of the “signals” will be described later.
Mic is connected not only the voice line but also the control line for operating the voice line connection point in the matrix device. When the user selects the broadcast destination key and presses talk key, the “signals” for controlling the connection point of matrix are output from the microphone. In the diagram above, the control signals are shown as dotted lines. Details of the “signals” will be described later.
Another example is auto announcement machine. At the set time, the timer outputs a control signal to play back the announcement file in auto announcement machine. Multiple announcement files are registered in the auto announce machine, and the timer can also output multiple control signals. The timer outputs control signals corresponding to each announcement.
The type of control is not just activation of the function of the equipment.
It is also used to inform the state of the equipment from the equipment to the indicator.
For example, the state of the equipment is that emergency broadcasting is being activated, the failure location of the equipment, ...
It is also used to inform the state of the equipment from the equipment to the indicator.
For example, the state of the equipment is that emergency broadcasting is being activated, the failure location of the equipment, ...
To generalize,
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In other words, a function operates by receiving a control signal. A device or event that sends a control signal is called a "trigger." If a timer device causes the announcement machine to start playing, the "trigger" is the timer. "Some functions" are functions for playing announcement files.
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Also, if a control is output and function 2 is activated in conjunction with the operation of function 1, function 1 is also trigger for function 2.
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How should "control" be perceived?
What is important in understanding the control is to understand the following.
1) Which devices control 4) which function of 3) which devices in 2) which way?
In the following pages,
2) Which way will be introduced in detail. This method is broadly classified into two types.
One is mechanical ON/OFF control, and the other is data communication.
Mechanical ON/OFF control has the advantage of making the controller easy to manufacture, but control using data communication is more convenient when there are many types of control functions. However, since the controller is software-based, specialized knowledge is required to create it.
1) Which devices control 4) which function of 3) which devices in 2) which way?
In the following pages,
2) Which way will be introduced in detail. This method is broadly classified into two types.
One is mechanical ON/OFF control, and the other is data communication.
Mechanical ON/OFF control has the advantage of making the controller easy to manufacture, but control using data communication is more convenient when there are many types of control functions. However, since the controller is software-based, specialized knowledge is required to create it.
Mechanical ON/OFF >>
Data Communication >>
