Patent Application
20100117787
1. Field of the Invention
The present invention is directed to automatically identify, to facilitate regular periodic inspection, and to provide training and information to personnel on usage of material lifting products. In particular, the present invention is directed to a method and system for identification, inspection and training for material lifting products, such as chain slings, wire rope slings, synthetic slings, blocks, hoist rings, hooks and other associated components.
2. Prior Art
Industrial lifting products or devices take a variety of forms. For instance, lifting products include chain slings and associated components, wire rope slings, synthetic web slings, block, hoist rings, clamps and hooks. Existing lifting products are identified in a number of ways, such as nameplates, name tags and other physical indicia. These may contain identifying information, such as the manufacturer, the serial number, the working load limit, the date of manufacture and the country of origin. The identifying information may be included at the request of the manufacturer or, because of industry or government regulations.
In industrial applications, periodic inspections are performed at the work site to confirm that the equipment is in proper working order. These periodic inspections are done for safety reasons and, increasingly, because of government or industry mandated requirements. These inspections require visual inspection of the lifting product for defects and record keeping of the periodic inspection data. For example, in the case of synthetic web slings, a tear in the synthetic web would be an example of a defect which must be addressed.
Inspections and record keeping may take place under governmental regulation or industry standards such as the American Society of Mechanical Engineers.
Industry standards include ASME B30.9 for all types of slings and ASME B30.26 for rigging hardware including shackles, hooks, blocks and clamps. For example, Section 9-5.8 of ASME B30.9 directed to synthetic web slings requires an initial inspection before using any new, repaired or modified sling. Additionally, periodic inspection is required to meet all of the requirements of the standard. Additionally, Section 9-5.8.2 requires that written inspection records be kept for all slings including a description of the new sling and its condition on each periodic inspection.
Considerable time and effort is involved in performing the periodic inspections and storing the information on the inspections. In many cases, the inspections are performed in the field under adverse conditions. For example, the lifting equipment may be located on or near marine vessels and structures or remote areas in factory plants. The inspection and report writing process is often labor intensive and redundant.
It would be desirable to provide an automated system to provide for the identity, inspection and training regarding material lifting products.
Another factor present in the existing inspection system is that there are often multiple parties involved including the manufacturer, the distributor, the end user and third-party inspection companies, each of which may have their own inspection reporting systems.
It would be desirable to provide a system and method for identification, inspection and training for material lifting products which is uniform.
There have been various uses proposed for radio frequency identification (RFID) tags in the past. Radio frequency identification systems rely on storing and remotely retrieving data using devices called RFID tags or transponders, which contain silicon chips and antennas to enable them to receive and respond to radio frequency queries from an RFID transceiver or reader. RFID tags can be either passive, semi-passive, or active. Passive RFID tags have no internal power supply. Minute electrical current induced in the antenna by an incoming radio frequency signal provides just enough power for an integrated circuit in the tag to power up and transmit a response. Semi-passive RFID tags are similar to passive tags except for the addition of a small battery. Active RFID tags have their own internal power source which is used to power any integrated circuits that generate the outgoing signal.
In each instance, the tag contains a transponder with a digital memory chip. The interrogator, an antenna packaged with a transceiver and decoder emits a signal activating the RFID tag so that it can read and write data to it. The reader decodes the data encoded on the tag's integrated circuit. Application software then processes the data.
For instance, Rehfus et al. (U.S. Pat. No. 6,501,382 and U.S. Publication No. 2002/0186134) discloses a transponder, such as a radio frequency identification (RFID) tag embedded or secured into a pocket or chamber of a bearing which contains identification information.
Frieden (U.S. Pat. No. 6,144,301) discloses RFID tags which may be periodically read by a reader unit and the information displayed or transferred electronically including safety and warning label information.
Yamagiwa (U.S. Patent Publication No. 2004/0206810) discloses a management system for transportation equipment including RFIDs in vehicles which communicate with computers such as servers 10, terminals 20, portable terminals 21 and PDAs.
Nevertheless, none of the foregoing disclose the use of RFID tags and transponders in lifting products which include a multitude of data including identity information, inspection information which may be periodically updated and stored, and training information on use of material lifting products.
The present invention is directed to a system and to a method for identifying, inspecting and training regarding material lifting products.
The present invention may be used with various material lifting products, including blocks, wire rope slings, wire rope sling assemblies, chain sling assemblies, master link assemblies, plate clamps and hooks and other associated components.
When a material lifting device is manufactured, an RFID tag or chip would be attached to or incorporated along with the material lifting product. A particular alphanumeric identification designation will be assigned to each tag or chip and accordingly to each lifting product. The RFID tag will include information of the type of the product, the date the product was put into service, the last inspection date and the status of the product at the last inspection date.
In one preferred procedure, an RFID reader/writer operates in conjunction with a portable computer such as a personal digital assistant, including a central processing unit, an input interface, such as a keyboard, a display or monitor, and communication means. The user will initially be provided with a choice in the form of a template to select from various lifting products. The RFID reader will read the serial number which will be searched against the database held in the memory of the personal digital assistant computer device. If a match of the serial number is found within the database, an inspection screen or template will be presented on the monitor or display. Various information which has been stored will be displayed including the name of the distributor, the serial number of the lifting product and particular information about the product including the grade, construction type and other pertinent information. Any defects would be noted on the inspection template. The information entered will be stored on the personal digital assistant computer device.
Additionally, once the inspection is complete, all of the changes entered onto the template will be sent and updated to the RFID tag attached to the material lifting device.
the information stored on the PDA portable computer device may also be transferred and stored to a personal computer or other computer system or computer network.
The embodiments discussed herein are merely illustrative of specific manners in which to make and use the invention and are not to be interpreted as limiting the scope of the instant invention.
While the invention has been described with a certain degree of particularity, it is to be noted that many modifications may be made in the details of the invention's construction and the arrangement of its components without departing from the spirit and scope of this disclosure. It is understood that the invention is not limited to the embodiments set forth herein for purposes of exemplification.
Referring to the drawings in detail,
As seen in
The inspection process is shown under the column designated “Mode 3”, described as Inspection Mode, PDA Version, as shown in box 66. An RFID reader/writer in the form of an RFID tag information reading mechanism or transceiver operates in conjunction with a portable computer, such as personal digital assistant (PDA) or similar device. Each of the computer devices would include a central processing unit, an input interface such as keyboard, a display or monitor, and communication means to communicate with the RFID tag. As seen at box 68 of
Thereafter, as shown at diamond 74, the serial number will be searched against a database held in the memory of the personal digital assistant portable computer device to see if there is a match. If the serial number does not match any in the database, as shown at box 76, the inspector or user will be provided an option to select a template as shown at box 78. A blank template without pre-populated information will then be presented on the monitor or display of the personal digital assistant, as shown at block 80.
The inspector or user will then be permitted to input inspection data on to the PDA portable computer device, as shown at box 82.
Returning to a consideration of diamond 74, if a match of the serial number on the RFID tag is found with the database stored in the PDA portable computer device as shown at box 86, an inspection screen or template will be presented to the user on the monitor or display which includes all of the data or information which has been compiled to date as shown at box 88.
By way of example but not by way of limitation,
Thereafter, the user or inspector will input data from the current inspection, such as the name and company of the inspector, the date of the inspection, any noted defects in the material lifting device, or other information as shown at box 90.
Once the inspection has been complete all of the changes entered onto the template of the inspection screen will be saved to the memory of the PDA portable computer devices as shown at box 92. The updated information will be sent and updated to the RFID tag on the material lifting device, as shown by dashed line box 94.
The entire inspection and record keeping may be performed at the work site at the location of the material lifting device.
Finally, under the column “Mode 4” of
Whereas, the present invention has been described in relation to the drawings attached hereto, it should be understood that other and further modifications, apart from those shown or suggested herein, may be made within the spirit and scope of this invention.
