Zpět na Referenční projekty

Detail projektu

ID projektu: 214

Název: Asset Tracking Case Study: Monroe County

Anotace: Monroe County was in search of a solution that would improve garbage collection processes for the 37,000 residents that inhabit the densely populated 764 square miles. The RFID solution delivers: •Increased billing accuracy by over 7% •Ability to offer real-time customer service •Improved truck routing created with location information

Popis: Challenge Waste collection operators face a number of challenges including: •Positively identifying which residence generated the waste, making billing difficult •Proving that garbage was collected to avoid double collection •Proving that the truck was on the route at the specified time to avoid sending a truck back for customers who forgot to put out their garbage •Determining if customers are putting out more garbage than allowed •Keeping track of their valuable assets (the carts) In southern states, municipalities often have the added problem of part time residents—people escaping the northern winters. The wintertime route collection may take longer than the summer, but without a means of uniquely matching the trash to the residence, it is very hard for operators to bill accurately. Equipment manufacturers have tried a number of methods to address these challenges. One method involved using barcodes on each cart. Individually identifying the carts allowed waste collection operators to issue and match carts to each residence. Truck drivers would use barcode scanners to read each cart at the time of pickup. With barcodes requiring line of sight operation, this method suffered from inaccuracies in bad weather, if mud or other material obscure the barcode, or if the customer placed the cart in the wrong orientation. Another approach used Global Positioning Satellite (GPS) information along with sensors on the cart-lifting arm to verify that the truck emptied the cart at a particular location. However in urban or even semi-urban areas, the close proximity of the residences made definitive one-toone correspondence of cart to customer difficult. To overcome this issue, operators tried using photography. While taking the photographs was easy, managing them was a different story. The complexity involved in trying to locate the correct photograph at the home office made timely customer service a challenge. To address these issues and more, waste collection equipment manufacturers turned to RFID technology. How It Works RFID provides the capability of uniquely identifying items without requiring the line-of-sight reads needed by barcodes. In the waste management application, there are four parts to the RFID solution: •On the carts, manufacturers embed an RFID tag (containing a chip and antenna) to hold a unique identification number. •In the truck, an RFID reader controlling a reader antenna reads the information off of each cart as it is emptied. •Also in the truck, an on-board computer controls the RFID reader. This computer receives the customer’s cart identification number from the RFID reader, combines it with information such as the truck’s location, and then wirelessly transfers it to a remote database at the central office. •For cart delivery, a reliable handheld reader facilitates accurate linking of cart to customer. While RFID technology is unique in that it enables item-level identification in a way not possible with other methods, it is only one piece of the overall automated waste collection system. GPS data determines the truck location, cellular wireless technology supports transfer of the data to the central office, and software controls the reading of cart information at the truck. Labrie Environmental Group chose to partner with Cascade Engineering to create the RFID system that would couple them. Impinj, as the leader in RFID technology innovation and products, was a natural choice to supply the RFID hardware. For the controlling software, both Labrie and Cascade had used FleetMind Solutions in the past. Together they specified the changes they wished to see in the software to support RFID technology and now license it. Cart Operation The first step in implementing the RFID-enabled automated waste collection system is making sure every cart is uniquely identified with an RFID tag. If carts are already in use, this step involves retrofitting each cart with an RFID tag. In the case of Monroe County, because they were introducing their customers to a new automated system, county workers delivered a new cart with an RFID tag already embedded to each address within the pilot area. At each delivery location, workers read the cart’s unique identification number with an RFID-enabled, handheld cart management computer (developed for Labrie and Cascade) and enter the customer’s address, transferring the information to the county’s database. In the county database, controlling software stores the customer’s address, the home’s GPS coordinates and unique cart identification, and links it to other information such as route management or billing software. During the cart delivery stage, accuracy is crucial, as it is both expensive and difficult to go back to customer locations to fix errors after cart delivery. Thus, the county required Labrie’shandheld cart management computer to be easy to use. The Labrie/Cascade team delivered the handheld readers to Monroe County in April 2009. Truck Operation The second crucial aspect for RFID-enabled garbage collection is the accuracy with which the system on the truck reads the carts. The system must: •Read only the cart that is being emptied, and do so within the short window of time (one second) that it takes to unload it into the truck’s hopper •Filter out any carts remaining on the ground •Be rugged enough to withstand harsh conditions •Be very reliable •Transmit the data to the central office database and verify receipt In the Labrie/Cascade system, reader antennas can be mounted in the ceiling of the hopper, or on the side of the truck. By limiting the read zone to about a four foot range from the antenna surface, Labrie ensures that reads only occur at the point of maximum lift (when the cart is being emptied). RFID Reader After trying other RFID readers, the Labrie/Cascade team selected the Impinj Speedway® reader for its advantages in performance, reliability, and resulting system cost. Particular features of the Speedway reader that proved important to the waste collection application include: •Read zone control. The ability to control the read zone allows greater variability on antenna placement. Mounting an antenna in the hopper of some trucks is too dangerous, necessitating placement of the antenna on the side of the truck. But such placement incurs the disadvantage of sometimes catching tags of carts still on the ground. With the Speedway reader’s unique read zone control features, the antenna’s reach can be narrowly confined, so that only the cart in the desired position is read. •Rugged mechanical design. The Speedway reader has a sturdy casing that lets it withstand abuse. Other readers require protective enclosures, but these arrangements can cause readers to overheat. Speedway’s rugged design makes such protection unnecessary, lowering cost for the truck system manufacturers as well as increasing reliability. •Best sensitivity. The Speedway reader’s sensitivity and antenna port design meant that only one reader antenna was required rather than the two needed by competitor’s readers. This also reduced overall system cost. •Fast reads. Even though each cart need only be read once, being able to read it quickly meant more reads of the cart in the read zone, ensuring accurate data capture. With support from Impinj, Labrie/Cascade was able to add the RFID aspect into their system with only one week of engineering time. Benefits By August 2009, Monroe County had a fully operational pilot of 8,500 households served by RFID-enabled garbage collection. And the benefits are already apparent. Using RFID technology, Monroe County was able to identify 650 customers that had not been billed for service in the past. That number is sure to rise when the county converts the remaining households to the system. Another benefit has been tracking the carts, which are also a valuable asset. By comparing the cart to the GPS coordinates, the county can detect when carts are moved away from their normal location. The county has already found two stolen carts with this method. The cart information may also be used in the future to track the condition of the carts. If, for example, a customer continually calls up to say their cart is missing its wheels, the county has a record of what has been done to the cart and can investigate misuse issues. In addition to better revenue collection and asset tracking, the county knows exactly where the trucks are in their routes, so they have been able to improve route efficiencies and provide much faster customer service. RFID provides for other benefits beyond Monroe County’s current uses. Municipalities may wish to monitor the amount of trash headed to landfills versus recycled. Some waste collection operators charge for trash collected above certain weight limits or create sliding rates based on types of trash collected. Or to encourage recycling and reduce garbage destined for landfills, some municipalities even pay customers for their recyclables. These Pay As You Throw (PAYT) types of operations are only feasible with the accurate customer identification made possible with RFID. Cascade Engineering Cascade Engineering is a multi-business manufacturer and marketer supporting multiple brands. They manufacture for and market to a variety of industries such as automotive, commercial truck & bus, solid waste & recycling, furniture, material handling and renewable energy. Their broad portfolio of offerings includes manufacturing products for OEMs, marketing branded products, and providing consulting services. The common thread weaving their businesses together is an expertise in large part injection molding. Cascade’s world class engineering, technology and manufacturing allows them to provide leading-edge products and services, while maintaining a strong commitment to lean manufacturing and environmental stewardship. They employ a sustainable business model based on diversification, innovation and sustainable development. They are committed to bringing sustainable products to market that contribute to the triple bottom line. The Cascade Engineering Family of Companies employsapproximately 1,000 people. visit wwww.cascadeng.com. Labrie Environmental Group The Labrie Environmental Group is a top tier manufacturer of equipment for the solid waste industry in North America whose brands include Labrie, Leach, and Wittke. The Group also manufactures the Juggler brand of solid/liquid separating units and Industrial Lifters brand of tippers and lifters. Labrie Environmental Group distributes and supports its products via a strong distributor network that spans the United States and Canada, and owns and operates the U.S-based, LabriePlus customer support center and parts center in Oshkosh, WI. The Group differentiates itself from other companies by being the only manufacturer to develop standard-setting technology through design, and by investing heavily in research and development to offer greener, more efficient, smarter, and safer equipment. Labrie’s clientele ranges from small to large, private entrepreneurs in the waste hauling sector to national waste management service providers, and counts hundreds of small towns and counties, as well as, major municipalities and cities in its customer base. In 1999, The Group was the first manufacturer of its kind to obtain ISO 9001-2000 certification. For more information, visit www.labriegroup.com. Monroe County, Mississippi Monroe County covers approximately 764 square miles in northeast Mississippi, with a population of over 37,000, and a housing density of nearly 22 units per square mile. Because of state and county laws, the county must pick up any refuse residents place at the curb and bill for this service. The county had been using manual bag pickup, but after researching automated collection systems, selected Labrie Environmental Group in December 2008 to implement a pilot system of five trucks to cover 8,500 households. Labrie partnered with Cascade Engineering to deliver a radio-frequency identification (RFID) solution powered by Impinj technology.

Dodavatel: Labrie/Cascade

Odběratel: Monroe County

Přínosy: •Increased billing accuracy by over 7% •Ability to offer real-time customer service •Improved truck routing created with location information

Rizika:

Rok: 0

Komunikace:

Opakované použití tagů: 0

Použité čipy:

Použité inlaye:

Použité čtečky: Impinj Speedway® reader

Použité tagy:

Orientační cena: 0

Rychlost čtení:

Cíl použití: Evidence

Sektor: | Jiné (uveďte v popisu)

Oblast použití: | Jiné (uveďte v popisu)

Pracovní prostředí: Venkovní

Materiál: Plast

Způsob čtení: Mobilní terminály

Čtecí vzdálenost: Střední [2 - 6 m]

Technologie: UHF (MHz)