Difference between revisions of "Exercise - Using Simulation Macros"
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::::* click on the down arrow on the end of the 'X' row, and create a floating point variable called "xpos", with an initial value 5.0, to use as the X variable; | ::::* click on the down arrow on the end of the 'X' row, and create a floating point variable called "xpos", with an initial value 5.0, to use as the X variable; | ||
::::* click on OK. | ::::* click on OK. | ||
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[[File:Exercise SimIcon Sim test.png|right|300px]] | [[File:Exercise SimIcon Sim test.png|right|300px]] | ||
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:::* use the down arrow at the end of the 'Return Value' box to create a boolean variable caled "hit" to use as the 'Return Value'. | :::* use the down arrow at the end of the 'Return Value' box to create a boolean variable caled "hit" to use as the 'Return Value'. | ||
::::* click on OK. | ::::* click on OK. | ||
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:::* click on OK. | :::* click on OK. | ||
+ | |||
+ | ::* In the 'Yes' loop: | ||
+ | :::* name the Output icon "Switch on lamp"; | ||
+ | :::* send value '1' to Port A single bit 0; | ||
+ | :::* click on OK. | ||
+ | |||
+ | :::* name the Delay icon "Wait 100ms"; | ||
+ | :::* configure it to give a delay of 100ms; | ||
+ | :::* click on OK. | ||
+ | |||
+ | :::* name the Calculation icon "Stop movement"; | ||
+ | :::* in the 'Calculations:' box, insert "xpos = 0" to reduce the distance incremented each time to zero; | ||
+ | :::* click on OK. | ||
+ | |||
+ | |||
+ | ::* In the 'No' loop: | ||
+ | :::* name the Output icon "Switch off lamp"; | ||
+ | :::* send value '0' to Port A single bit 0; | ||
+ | :::* click on OK. | ||
+ | |||
+ | :::* name the Delay icon "Wait 100ms"; | ||
+ | :::* configure it to give a delay of 100ms; | ||
+ | :::* click on OK. | ||
Revision as of 15:11, 26 August 2013
Simulation macros are a form of Component macros. Their purpose is to make simulation more realistic by adding physical components to the electronic devices.
When the Flowcode program is compiled and downloaded to a microcontroller, they are ignored - hence the name Simulation macros.
Even a cursory glance at the dialogue box used to configure them shows that they are very powerful devices, with a huge range of possible effects.
This exercise uses two of them to illustrate the use of a PIR (Passive Infra-Red sensor) to operate an intruder sensor.
Contents
The scenario
The scene depicts the front of a house.
A PIR sensor is mounted on the wall of the house, above the path leading across the garden.
The data sheet for the PIR shows that it is sensitive to a range of 10 metres, within a cone of angle 100 degrees.
Its detection area is represented in the image by the pale blue cone.
When an intruder enters the detection cone, a warning lamp lights up in the house.
The System Panel
On the System Panel, viewed from above (the default position,)create:
- a brick wall, represented by adding a red cuboid and changing it to a rectangle, 15mm wide, 120mm high and 120mm deep,
- located at coordinates x = 0, y = 0, z = 60,
- with rotation settings X = 0, Y = 0, Z = 0;
- a path, represented by a grey rectangle, 240mm wide, 100mm high and 0mm deep,
- located at coordinatesx = 125mm, y = 0mm, z = 0mm,
- with rotation settings of X = 0, Y = 0, Z = 0;
- a cone, couloured light blue, representing the sensing region of the PIR, with width = 70mm, height = 250mm, depth 95mm,
- located at coordinates x = 45mm, y = 0mm, z = 80mm,
- with rotation settings of X = 0, Y = -55, Z = 0.
- Drag the mouse cursor over these three elements and group them together.
This produces 'group 1'.
- Give this group:
- dimensions - width = 265mm, height = 250mm, depth = 135mm;
- coordinates - x = 128, y = 0, z = 68;
- rotation - X = 0, Y = 0, Z = 0.
- Give this group:
Also on the System Panel, create an intruder, by:
- adding four spheres, and configuruing the properties as follows:
- sphere 1 (the head):
- colour pink;
- dimensions - width = 12mm, height = 13mm, depth = 15mm;
- coordinates - x = -2.2, y = 0.7, z = 22;
- rotation - X = 90, Y = 0, Z = 0.
- sphere 1 (the head):
- sphere 2 (the body):
- colour blue;
- dimensions - width = 14mm, height = 26mm, depth = 24mm;
- coordinates - x = -2.2, y = 0.5, z = 4;
- rotation - X = 90, Y = 0, Z = -180.
- sphere 2 (the body):
- sphere 3 (the legs):
- colour dark green;
- dimensions - width = 9mm, height = 23mm, depth = 15mm;
- coordinates - x = -2.2, y = 1, z = -16;
- rotation - X = 90, Y = 0, Z = -180.
- sphere 3 (the legs):
- sphere 4 (the feet):
- colour black;
- dimensions - width = 6mm, height = 15mm, depth = 25mm;
- coordinates - x = -6, y = 0, z = -25;
- rotation - X = 90, Y = 90, Z = 0.
- sphere 4 (the feet):
- Drag the mouse cursor over the four spheres and group them together.
This produces 'group 2'.
- Give it:
- dimensions - width = 18mm, height = 32mm, depth = 60mm;
- coordinates - x = 165, y = 0, z = 28;
- rotation - X = 0, Y = 0, Z = 0.
- Give it:
The System Panel should resemble the image shown above. (The image has been rotated to show all components. The table-top is coloured green.)
Click on the 'Collisions' icon, and select the 'Move through' option, which allows the intruder to enter the detection cone.
The Dashboard Panel
- Open the 'Outputs' toolbox, and locate the 'LED 5mm Panel' device.
- Click on the down arrow next to it and choose the 'Add to dashboard panel' option.
- Zoom in to the Dashboard Panel to make the LED large enough to see.
- Click on the LED and configure its properties as follows:
- choose a suitable colour, such as red;
- connect it to Port A, bit 0.
The Flowcode program
- On the Startup screen, click on 'New project' to create a new flowchart.
- Add the icons shown in the flowchart:
- a decision icon with:
- a 'Yes' loop containing an output icon, followed by a delay icon and then a calculation icon;
- a 'No' loop containing an output icon, followed by a delay icon;
- Configure the icons, by double clicking on each in turn, as follows:
- the top Simulation macro:
- name it "Move the intruder";
- click on the 'Panel' tab, and then on the 'Position' folder;
- click on the 'MoveAlong' macro and:
- choose 'group2'(the intruder)as the Handle;
- choose 'shape1'( the brick wall) as the Axis;
- click on the down arrow on the end of the 'X' row, and create a floating point variable called "xpos", with an initial value 5.0, to use as the X variable;
- click on OK.
- the second Simulation macro:
- name it "Check detection";
- click on the 'Panel' tab, and then on the 'Collision' folder;
- click on the 'TestSingle' macro and:
- choose 'shape2'(the detection cone) for 'Pos' and 'shape5' (the intruder's head,) for 'Test';
- use the down arrow at the end of the 'Return Value' box to create a boolean variable caled "hit" to use as the 'Return Value'.
- click on OK.
- the decision icon:
- name it "Intruder detected?";
- insert the condition "hit = 1";
- click on OK.
- In the 'Yes' loop:
- name the Output icon "Switch on lamp";
- send value '1' to Port A single bit 0;
- click on OK.
- name the Delay icon "Wait 100ms";
- configure it to give a delay of 100ms;
- click on OK.
- name the Calculation icon "Stop movement";
- in the 'Calculations:' box, insert "xpos = 0" to reduce the distance incremented each time to zero;
- click on OK.
- In the 'No' loop:
- name the Output icon "Switch off lamp";
- send value '0' to Port A single bit 0;
- click on OK.
- name the Delay icon "Wait 100ms";
- configure it to give a delay of 100ms;
- click on OK.
- Flowcode
- Experienced
- Students
Adding supplementary code
This feature
Definitions and function declarations:
This is
Function implementations: