CN203432573U

CN203432573U - Device for accurately measuring read distance of RFID (radio frequency identification) tag

Info

Publication number: CN203432573U
Application number: CN201320502204.6U
Authority: CN
Inventors: 伯林; 邓元明
Original assignee: Less Radio-Frequency Science And Technology That Raises Up Yangzhou Co Ltd
Current assignee: Less Radio-Frequency Science And Technology That Raises Up Yangzhou Co Ltd
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2014-02-12
Anticipated expiration: 2023-08-15

Abstract

The utility model relates to a device for accurately measuring the read distance of an RFID (radio frequency identification) tag. The device comprises an antenna bracket and a product bracket, wherein the antenna bracket and the product bracket are parallel to each other and are perpendicular to the ground; a test antenna is fixed to the upper part of the antenna bracket; the RFID tag is bonded to the upper part of the product bracket; the RFID tag and the test antenna are positioned on the same height and are opposite to each other; a guide rail is fixed on the ground; the guide rail extends along the connecting line of the root parts of the antenna bracket and the product bracket; a trolley which can move along the guide rail is arranged on the guide rail; the lower end of the product bracket is fixed to the trolley; a laser range finder for detecting the distance between the antenna bracket and the product bracket is fixed on the antenna bracket. After a reader of the RFID tag is turned on and when the trolley is pulled forward from the place close to the test antenna, the movement distance of the trolley is accurately measured by the laser ranging finder; when a signal of the test antenna cannot be read by the reader, the value recorded in the laser range finder is the read distance of the RFID tag.

Description

A kind of device of accurate measurement RFID tag read distance

Technical field

The utility model relates to a kind of device of accurate measurement RFID tag read distance, belongs to contactless automatic tag identification technical field.

Background technology

Wireless radio frequency identification mark (RFID) technology has been widely used in the ticket manufacture of high ferro, subway.Wireless radio frequency identification mark comprises chip and aluminium foil antenna, and the pin of chip is electrically connected to the pin of aluminium foil antenna.

RFID label due to its characteristic that can carry out remote read-write at 0-10m not etc., in actual application, the distance of tag read distance often determines the field of its use or characterizes the quality of its performance, therefore also needing that in RFID production run it is read to distance measures, common test mode is, with the fixing test antenna of read write line of support, graduated tape on ground paving, operating personnel use clamp clamps label to be tested, hand-held fixture is from test antenna to mobile at a distance, when read write line cannot be read RFID label, operating personnel write down the scale of position now as the distance that reads of this label.

There is following weak point in this measuring method: 1. the hand-held mode of operating personnel is because rocking of staff can increase the instability that read write line reads; 2. the position of the vertical projection that cannot judge exactly label position when operating personnel read distance on rule.

Utility model content

The purpose of this utility model is, overcomes problems of the prior art, and a kind of device of accurate measurement RFID tag read distance is provided, and can improve the accuracy of measurement.

For solving above technical matters, the device of a kind of accurate measurement RFID tag read distance of the present utility model, comprise and being parallel to each other and perpendicular to antenna holder and the product shelves on ground, the top of described antenna holder is fixed with the test antenna of read write line, the top of described product shelves is pasted with RFID label, described RFID label and described test antenna be positioned on sustained height and in opposite directions over against, on ground, be fixed with guide rail, described guide rail extends along the line of described antenna holder and product shelves root, described guide rail is provided with the dolly that can move along guide rail, the lower end of described product shelves is fixed on described dolly, on described antenna holder, be fixed with the laser range finder that detects spacing between described antenna holder and product shelves.

With respect to prior art, the utility model has been obtained following beneficial effect: along guide rail travelling car, distance between RFID label and the test antenna of read write line is changed, after read write line is opened, while pulling dolly to advance from the place near test antenna to distant place, laser range finder accurately records the distance that dolly moves, when read write line cannot be read RFID label, the value now recording on laser range finder is the distance that reads of this RFID label, because dolly advances very steady along guide rail, laser range finder measuring distance is very accurate, thereby this device can be accurately and is stably obtained the distance that reads of RFID label.

As preferred version of the present utility model, on described dolly, be fixed with pull bar.Affect pull bar, be convenient to along guide rail travelling car.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.

Fig. 1 is the structural representation that the utility model is accurately measured the device of RFID tag read distance.

In figure: 1. antenna holder; 2. test antenna; 3. laser range finder; 4. guide rail; 5. dolly; 5a. pull bar; 6. product shelves; 7.RFID label.

Embodiment

As shown in Figure 1, the utility model is accurately measured the device of RFID tag read distance, comprise and being parallel to each other and perpendicular to antenna holder 1 and the product shelves 6 on ground, the top of antenna holder 1 is fixed with test antenna 2, the top of product shelves 6 is pasted with RFID label 7, RFID label 7 and test antenna 2 be positioned on sustained height and in opposite directions over against, on ground, be fixed with guide rail 4, guide rail 4 extends along the line of antenna holder 1 and product shelves 6 roots, guide rail 4 is provided with the dolly 5 that can move along guide rail, and dolly 5 sides are fixed with pull bar 5a.Affect pull bar 5a can make dolly 5 move along guide rail 4.The lower end of product shelves 6 is fixed on dolly 5, is fixed with the laser range finder 3 that detects spacing between antenna holder 1 and product shelves 6 on antenna holder 1.

After read write line is opened, while pulling dolly 5 to advance to distant place from the place near test antenna 2, laser range finder 3 accurately records the distance that dolly 5 moves, when read write line cannot be read RFID label 7, now on laser range finder 3, the value of record is the distance that reads of this RFID label 7, because dolly 5 advances very steadily along guide rail 4, laser range finder 3 measuring distances are very accurate, thereby this device can be accurately and stably obtained the distance that reads of RFID label 7.

The foregoing is only the better possible embodiments of the utility model, non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.

Claims

1. a device of accurately measuring RFID tag read distance, comprise and being parallel to each other and perpendicular to antenna holder and the product shelves on ground, the top of described antenna holder is fixed with the test antenna of read write line, the top of described product shelves is pasted with RFID label, described RFID label and described test antenna be positioned on sustained height and in opposite directions over against, it is characterized in that: on ground, be fixed with guide rail, described guide rail extends along the line of described antenna holder and product shelves root, described guide rail is provided with the dolly that can move along guide rail, the lower end of described product shelves is fixed on described dolly, on described antenna holder, be fixed with the laser range finder that detects spacing between described antenna holder and product shelves.

2. the device of accurate measurement RFID tag read distance according to claim 1, is characterized in that: on described dolly, be fixed with pull bar.