gca186_2-en
no way to compare when less than two revisions
Differences
This shows you the differences between two versions of the page.
— | gca186_2-en [2018/11/26 02:49] (current) – created - external edit 127.0.0.1 | ||
---|---|---|---|
Line 1: | Line 1: | ||
+ | ====== GCA186-2 Railroad Crossing ====== | ||
+ | [[english|{{ | ||
+ | [[: | ||
+ | * [[mgv-overview-en|The GCA modules]] | ||
+ | |||
+ | \\ | ||
+ | |||
+ | ^^^^By Peter Giling ^^^^ | ||
+ | \\ | ||
+ | ===== Description ===== | ||
+ | Making barriers moving is easy now adays with servo motors.\\ | ||
+ | But if we like to have this controlled the way it should, there is more needed than just the servo itself.\\ | ||
+ | In the real world, for example, there is a system that senses when the tail of a train just has passed the crossing area, or counting all the whees/axes before and after the crossing.\\ | ||
+ | That can be done in many ways, but it always come to the fact , that it does not matter if a train is 50 wagons long,\\ | ||
+ | or just a locomotive.\\ | ||
+ | One way to achieve that on our miniature world, is doing it completely manual.\\ | ||
+ | But that is not the way I would prefer, so I started making a solution for a friend in a different way.\\ | ||
+ | It starts with the idea that whether he is driving a train manually or automatic (with Rocrail of course !),\\ | ||
+ | this system should always work.\\ | ||
+ | GCA186-2 is meant to work totally independant from any other system.\\ | ||
+ | All we need is a 9-16V transformer or Adapter.\\ | ||
+ | |||
+ | Now the basic is to fix at least two magnets under the train, one in front, and one under the last waggon.\\ | ||
+ | More than two is no problem, the limit = 255.\\ | ||
+ | Next we need four hall sensors to be mounted between the sleepers, so that they will sense the magnets under the train. see [[http:// | ||
+ | **NOTE: | ||
+ | Be sure that the train should fit completely between sensor A and sensor C, and/or between point D and B.\\ | ||
+ | |||
+ | Many different options should be possible, depending on the software in this unit.\\ | ||
+ | That is made easy by using a medium scale micro processor.\\ | ||
+ | The example here is a 2 direction single track crossing.\\ | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Assume that a train approaches from the left hand side.\\ | ||
+ | The train first activates sensor A.\\ | ||
+ | The GCA186-2 will start flashing the lights, switch on the relay which could possibly be used to activate any sound, | ||
+ | and shortly after that the barriers descend.\\ | ||
+ | Board contains two outputs for servo' | ||
+ | In the mean time the train continues, and the magnet under the last wagon also passes sensor A.\\ | ||
+ | Now, GCA186 has counted two magnets.\\ | ||
+ | Passing sensor B has no effect here.\\ | ||
+ | But as soon as the train passes point C, the count down starts.\\ | ||
+ | When the last wagon passes sensor C, two magnets have been counted, meaning that the rails are clear and\\ | ||
+ | the barriers should rise again etc.\\ | ||
+ | But that is not the complete end of it.\\ | ||
+ | To avoid that the systems starts again on passing point D,\\ | ||
+ | the train also has to count the magnets passing point D in the same amount as sensor A, before the whole system is reset.\\ | ||
+ | So far the flashing lights are still on, you should be familiar with the next expression: \\ | ||
+ | **PLEASE WAIT UNTIL FLASHING LIGHTS ARE OFF, ANOTHER TRAIN MIGHT BE APPROACHING !!**\\ | ||
+ | Flashes and sound will stop after the last sensor also has counted the correct amount of magnets.\\ | ||
+ | If you swap A with D and B with C in this text, you have the explanation for the opposite way.\\ | ||
+ | For a one way traffic, different firmware will be available, also for double track .\\ | ||
+ | This board cannot service more than doubletrack, | ||
+ | That would need many more sensors , which there is no input for.\\ | ||
+ | Contact [[peter.giling@rocrail.net|Peter]] if you need that.\\ | ||
+ | |||
+ | ==== Feaures ==== | ||
+ | * control for two flashing leds, also possible on the barriers itself, because only 2 wires are needed | ||
+ | * free relay contact available for sound options | ||
+ | * two barriers each with its own motor, thus easy to install | ||
+ | * high and low position of barriers are adjustable | ||
+ | * Adjustable between starting flashing (and sound) and barriers to go down | ||
+ | * Barriers will go up directly but ONLY after the last magnet has passed.\\ | ||
+ | This means that the length of the train is sensed.! | ||
+ | |||
+ | |||
+ | \\ | ||
+ | |||
+ | ===== The prototype board ===== | ||
+ | The usual item, to proove that it works, is not yet available\\ | ||
+ | | {{: | ||
+ | \\ | ||
+ | |||
+ | ===== Hardware files ===== | ||
+ | | {{: | ||
+ | | {{: | ||
+ | \\ | ||
+ | |||
+ | ===== Firmware ===== | ||
+ | |||
+ | All firmware is developed with Picsimulator from Oshonsoft.\\ | ||
+ | | {{: | ||
gca186_2-en.txt · Last modified: 2018/11/26 02:49 by 127.0.0.1