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notice: here's a more technical followup of this previous article, you doubtless want to read it first, if you don’t have already.

There are 2 leading areas of effect when the usage of the RFID Scanner with Koha:

  • the cleaning, when a publication currently scanned during the stock isn’t supposed to be there
  • the inventory/historical past, after the inventory, to see the place a booklet is and has been
  • however earlier than diving into these, we want a little of heritage on how the scanner works.

    one of the key elements of using the scanner is the capacity to make use of RFID tags establish containers (like shelves, packing containers or bookcases) instead of just items.

    Scanning these tags will set the “current area” of the scanner, and every merchandise scanned after that should be bound to that location.

    There are 2 different types of places, everlasting and transient. The desk within the sorting workplace is a temporary region, while the cabinets in the public enviornment are everlasting.

    right here some examples of permanent locations:

  • — main department, archives, room m3, bookcase 15
  • — ABC department, public enviornment, eco-friendly room, bookcase a03
  • and some transient places:

  • — pickup shelf for customers in branch XYZ
  • — virtual location for ABC’s broken objects
  • — self provider computer, take a look at at XYZ
  • of workers — team of workers desk at main
  • every merchandise will then have a permanent location ( the merchandise belongs to the leading department archives) and a brief location ( the item has been checked out at a self carrier laptop at XYZ branch)

    i will be able to focal point on Deichman Library’s especially now. Your library is probably different and should have diverse concerns, but most of the concepts will nonetheless observe.

    The CD is marked as “late, paid”

    there are many instances we encountered while trying out the scanner:

  • books which are good candidates for a cling/reserve
  • books that are on the cabinets, however are nonetheless marked as on personal loan
  • books that are on the cabinets, but belong to a unique department
  • books which are marked now not for personal loan (this can potential various things: they don't seem to be presupposed to be on the shelf or someone forgot to examine them in)
  • books which are marked as in transfer but they in reality reached the destination already
  • books marked as lost or misplaced
  • books that belong to a further library. (Inter Library mortgage)
  • every of those will act in another way, they can both fix the problem “on the fly” ( when the ebook is marked in transfer, but it is on the vacation spot already), or as a substitute signal the user that some motion have to be taken (the ebook needs to be picked up for a consumer, the destination should be set to “ id="b5fa" class="lv lw ch ap ly b lz ma mb mc md me mf mg mh mi mj">It additionally depends upon the place the book is scanned. A transfer could be marked as achieved only when the item is at the correct destination, otherwise a “decide on me up” might be despatched to the user to elevate over the switch.

    cleansing up these cases can also be a precedence. mainly because in most of these cases these gadgets won’t be available for personal loan on the net interface or on the “pickup record”. but additionally as a result of some others will also be highly complicated to track or fix later.

    All this logic is inside the API (/api/v1/location) that we introduced to Koha. It deals with all those combinations and will simply returns a “destination” for the merchandise, or in other words where the booklet should still be.

    The scanner will without problems evaluate the present shelf with the vacation spot, and beeps if they don’t healthy. (It’s somewhat more complicated than that, a book scanned in “ will in shape “abc”, or “ but not “ or “xyz”)

    The different enviornment of impact for the scanner is the ability to music down the background of each and every item, and the latest place along with other items.

    illustration: heritage of an item

    The picture above suggests the background of a single merchandise, sorted via the most contemporary hobbies first. it will probably and will develop lots extra longer as long as the item is scanned and transfered.

    that you can read the history like this:

  • The scanner found the merchandise the twenty third of October, and bound it to “ (“flam” branch, public area, third ground, shelf d04).
  • The publication became then requested by way of a customer for pickup from the leading library:

  • a first sign in by way of the staff happened 35 days ago ( id="2657" class="lv lw ch ap ly b lz ms mb mt md mu mf mv mh mw mj np mp mq">and the day after in hutl (which is our main library department).
  • It turned into then checked out through the shopper the usage of a self service laptop 6 days later ( book in the Shelf view

    browsing the database for the same shelf ( that you would be able to see the item remains there. even though the remaining considered place is the checkout computer in hutl, the “everlasting” vicinity is remembered and you may nevertheless see the loaned books on the shelf (even if the final area is different).

    merchandise’s particulars, with before/after

    here on the left, the particulars view of the same merchandise, with the permanent “shelf” vicinity ( and the “temp”-orary location or remaining-viewed ( id="d677" class="lv lw ch ap ly b lz ma mb mc md me mf mg mh mi mj">Some gadgets have diverse ingredients and for this reason multiple tags: each particular person tag is shown right here, and has it’s personal background, so if one half changed into missing that you could find out due to the fact that when.

    quite enjoyable is the ultimate part, where that you may see which items where scanned earlier than and after.

    This assistance can also be helpful when the publication is misplaced, so as an alternative of looking for it at once which you can simply seek which books have been within sight (which might be expectantly not misplaced) after which seem between them.

    Of direction it might nevertheless be less difficult to mark the merchandise as misplaced in Koha and look forward to the next stock, but when you are in a hurry that you would be able to song it down this manner as well.

    regrettably Koha guide for background and location is sub-ultimate, so in its place of adding new tables and interfaces to Koha we determined to setup a brand new device which will increase Koha by using living alongside, and limit the combination with Koha to a single API entry element.

    There are additionally some other technical causes for this, notably the scanner is simply a micro-controller and it would be difficult and clumsy to enforce a full authentication system.

    The server we developed is written in Perl and in keeping with Plack. It acts as an interface between the scanner, the self service machines, the desk RFID readers and Koha. It additionally has a API interface itself which may also be used to question for counsel. The concept is so as to add a Javascript front conclusion to it (at this time the Perl app can serve html pages as well)

    On the Koha facet, as mentioned already, a new API entry factor became brought: /api/v1/vicinity

    $ curl -s --information '["barcode":"03010738409003"]' | json_xs"gadgets" : ["reserves" : "fnyd" : "count" : 1,"oldest" : "29","need" : 1,"avail" : 0 , "hutl" : "count" : 2,"need" : 1,"oldest" : "28","avail" : 1 ,"author" : "Fennell, Melanie","homebranch" : "hutl","biblioitemnumber" : "738409","holdingbranch" : "hutl","barcode" : "03010738409003","title" : "Å bekjempe lav selvfølelse","itemnumber" : "650684","itype" : "BOK","copynumber" : "3","dest" : " : " Fen"]

    It settle for a list of entries, with mandatory barcodes and an optional vicinity. It performs the cleanup when needed, and returns a vacation spot with some metadata (title, writer, name quantity).

    The RFID server uses this advice to beautify the output, and to check if the merchandise has to be moved, or if it's going to be left in location.

    note: Koha could save the place offered by means of the RFID Scanner within the “vicinity” box. in that case all the view will screen is the place the item became scanned final. alas we are already using this box for other internal explanations so we skipped this step.

    here's fairly entertaining: I’m working on a system which is in a position to notice misplaced objects (and suggest the relevant vicinity). it really works by means of evaluating identical objects (call quantity) in distinctive shelf. It is way too early to share any outcomes, however most of the detected misplaced gadgets are already good, so it can be equipped quickly.

    The server remains below development. all the images posted here got here from a prototype which could be rewritten. As quickly as we now have whatever thing reliable we will push it out on github here.

    i will also add some documentation on the way to write your own adapter when you are using a unique ILS than Koha, but as which you could see it should be pretty easy.

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