Chess provides new voice solution

Case Studies Section

DHL logoAdvanced voice picking and radio frequency (RF) processes have been incorporated into a warehouse management system implemented by Chess Logistics Technology for DHL Exel’s distribution contract with JD Wetherspoon. Chess integrated components of its latest Empirica warehouse management system (WMS) with an earlier product in use at DHL Exel to create the application. New functions were introduced to support fresh produce picking, load composition, improved customer data exchange and reporting.

DHL Exel’s JD Wetherspoon National Distribution Centre (NDC) in Daventry operates 24/7 to provide consolidated distribution of frozen, chilled and ambient food and drink items to more than 650 pubs throughout the UK and Ireland.

Chess had implemented voice and RF based solutions at other DHL Exel contracts and was chosen for the new site because of operational similarities. The company demonstrated its voice picking capabilities and offered a solution that incorporated purchasing and other functions. The solution is based on the Socretes WMS developed for DHL Exel by Chess during the 1990s. RF and voice picking was added by integrating Chess’ latest Empirica software with the earlier application, a process simplified because the facility to create application links is a standard component of Empirica.

All pallet movements are managed by Empirica using truck mounted and hand-held RF terminals, while the voice picking solution issues instructions directly from the warehouse management system.  Operatives respond via a headset with information such as check digits, task confirmation or to request instructions to be repeated. 

The WMS issues instructions in sequence and authorises new picks when the preceding action is confirmed. Picking efficiency is maximised because staff work hands-free at all times without reading paper or on-screen instructions.  Picking errors are minimised because staff follow clear and unambiguous instructions.

For picking to the roll cages used for delivery Chess devised a function that allows a picker to skip instructions in certain situations by issuing a verbal “jump” command.  This can be used to avoid congestion when another picker is working at the specified cage allowing both to continue working.  Pickers can also “jump” to ensure bulky or heavy cases are placed at the bottom of the cage with lighter or fragile items on top.  In each scenario the WMS ensures that skipped items are picked later in the sequence.  Chess also devised a function to ensure that the tamper-evident tags used to seal cages before they are loaded onto transport vehicles match the details on delivery notes. 

Another key system requirement was support for data exchange. Chess devised routines for the application to translate incoming orders into loads and picking lists and assess the number of cages required to complete the order based on weight, size and quantity of products to be picked. This necessitated new links with an existing routing and scheduling application.  When loads have been authorised the WMS issues its instructions to pickers. The system also generates EDI files with information about goods received, purchase orders and despatches to ensure synchronisation of data with the customer.

Chess Logistics Technology Limited has provided software for logistics and distribution applications for more than twenty years and is recognised as a specialist in its field. The company has an extensive client list of national and international companies.