CN201594278U - Radio frequency label with controllable read and write - Google Patents
Radio frequency label with controllable read and write Download PDFInfo
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- CN201594278U CN201594278U CN2010201183721U CN201020118372U CN201594278U CN 201594278 U CN201594278 U CN 201594278U CN 2010201183721 U CN2010201183721 U CN 2010201183721U CN 201020118372 U CN201020118372 U CN 201020118372U CN 201594278 U CN201594278 U CN 201594278U
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Abstract
The utility model provides a radio frequency label with controllable read and write, which comprises a label chip, a label antenna and a third sensitive element, wherein the label antenna is connected with the label chip and the third sensitive element; the third sensitive element is switched between a switching-on status and a switching-off status under the function of a third factor; when the radio frequency label is an ultrahigh frequency RFID label, the switching-on status and the switching-off status of the third sensitive element leads the label antenna to be in impedance matching with or not matched with the label chip; and when the radio frequency label is a high frequency RFID label or a low frequency RFID label, the switching-on status and the switching-off status of the third sensitive element leads the label antenna to be successfully connected with or separated from the label chip. The radio frequency label with controllable read and write can obtain the physical condition and the external environment of the radio frequency label without the I/O function, thereby expanding the application occasions of the radio frequency label.
Description
Technical field
The utility model relates to a kind of radio-frequency (RF) tag and monitoring method thereof.
Background technology
In the current society that science and technology is showing improvement or progress day by day, telecommunication technology and application are also flourish day by day.Radio-frequency (RF) tag is RFID (Radio Frequency Identification), claims electronic tag again, as one of main application of radio near-field communication, has obtained using widely in all trades and professions at present.REID is a kind of automatic identification technology that begins to rise the nineties in 20th century, and it is one and utilizes radiofrequency signal to realize that by space coupling (alternating magnetic field or electromagnetic field) contactless information transmission and the information of passing through to be transmitted reach the technology of identifying purpose.Radio-frequency (RF) tag comprises ultrahigh-frequency radio-frequency tag (UHF RFID), high-frequency radio frequency tag (HF RFID) and low frequency radio frequency label (LF RFID).
The element of RFID radio-frequency (RF) tag total system has:
(1) radio-frequency (RF) tag is generally passive.(UHF RFID) is example with ultrahigh-frequency radio-frequency tag, sees also Fig. 1 and Fig. 2.Figure 1 shows that existing label antenna does not form the structural representation of the radio-frequency (RF) tag of closed-loop path.Figure 2 shows that existing label antenna forms the structural representation of the radio-frequency (RF) tag of closed-loop path.Existing radio-frequency (RF) tag is connected and encapsulates in the lump by label chip 1 and label antenna 2 couplings and forms.Existing radio-frequency (RF) tag has only " can read and write " (read-write) and two kinds of duties of " can not read and write " (not read-write) when read-write, just radio-frequency (RF) tag within the specific limits the read-write property of (promptly in reading and writing device antenna radiation effective range) be inevitable, off-limits not read-write property also is inevitable, these two kinds of duties.In reading and writing device antenna radiation effective range, radio-frequency (RF) tag illustrated in figures 1 and 2 all has readability, i.e. label chip in the radio-frequency (RF) tag 1 and label antenna 2 impedance matchings.
(2) read write line comprises microcomputer system, coding/decoding system, radio-frequency (RF) power amplification and receiving system.
(3) antenna is used for read write line carrier power output and receives, active, high-gain, high sensitivity.
(4) aftertreatment comprises data encryption, background network transmission, database support, executive system etc.) basic functional principle of RFID radio-frequency (RF) tag is, read write line is via its day alignment label transmission carrier signal (energy content radiation and modulated operational order), because label chip and label antenna impedance matching, label chip can obtain maximum electromagenetic wave radiation energy from antenna, thereby set up operating voltage for label chip oneself, the label chip internal circuit is started working, understand and carry out the instruction that detection obtains on label antenna, finish a series of data processing by instruction, and data are sent to read write line through label antenna; Behind the read write line reading tag chip data, after a series of processing such as signal amplification decoding, pass to data bank network, and make further executable operations by interface.
Traditional radio-frequency (RF) tag is on read-write capability, and read write line is is only read and write its inner storer usually, and some information that the just label chip inside that obtains carries are as EPC sign indicating number, internal data etc.And can't know for the status information that the physical state and the environment of living in (as displacement, environment temperature, humidity, pressure etc.) thereof of radio-frequency (RF) tag itself is third party's factor.Yet the radio-frequency (RF) tag that lacks these status informations, environmental parameter has significant limitation on it is used.
Desire to know the third party's factor status information (as residing physical state of radio-frequency (RF) tag itself and external environment condition) except that the label chip internal information, the solution of the most easily expecting is the radio frequency tag chip of band I/O function.But this new ideas technology at aspects such as notion introducing, original design, checking, large-scale production, all is still waiting time.At present traditional radio frequency tag chip does not nearly all contain the I/O mouth on the domestic and international market, and manufacturer production seldom is domestic blank especially in the world.In some application scenarios, as in the culturing room of mushroom or vaccine, the user need carry out real-time monitoring to the residing environment of radio-frequency (RF) tag (pressure, temperature etc.).And existing radio-frequency (RF) tag can not satisfy this demand under the prerequisite with the I/O function not.
This shows how providing a kind of is not the technical matters that those skilled in the art need to be resolved hurrily with the physical state of the radio-frequency (RF) tag known of I/O function itself and the radio-frequency (RF) tag of external environment condition thereof.
The utility model content
The purpose of this utility model is to provide a kind of controlled radio-frequency (RF) tag of reading and writing, and not only can know the information that radio frequency tag chip inside carries, and can also know the third party's factor status information except that label chip information.
To achieve the above object, the utility model adopts following technical scheme:
A kind ofly read and write controlled radio-frequency (RF) tag, described radio-frequency (RF) tag comprises label chip and label antenna, described label chip is connected with described label antenna, described radio-frequency (RF) tag also comprises the third party's sensitive element that is subjected to third party's controlling factors, described third party's sensitive element is connected with label antenna, described third party's sensitive element under the effect of third party's factor at path or open circuit and switch between two states, when radio-frequency (RF) tag was ultra-high frequency RFID label, the path of described third party's sensitive element or off state made label antenna and label chip impedance matching or mismatch; When radio-frequency (RF) tag was high-frequency RF ID label (being high-frequency radio frequency tag) or low frequency RF ID label (being the low frequency radio frequency label), the path of described third party's sensitive element or off state made label antenna successfully be connected with label chip or disconnect connection.
Preferably, described third party's sensitive element and described label antenna form the closed-loop path, described third party's sensitive element is determining the folding of described closed-loop path in path or the switching between two states of opening circuit, when radio-frequency (RF) tag was ultra-high frequency RFID label, the folding of described closed-loop path determined described label antenna and label chip impedance matching or mismatch; When radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, the folding of described closed-loop path determined described label antenna successfully to be connected with label chip or disconnects connection.
Preferably, described third party's factor is the magnetic field of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a magneto sensor.
Preferably, described third party's factor is the pressure of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a pressure transducer.
Preferably, described third party's factor is the temperature of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a temperature sensor.
The beneficial effects of the utility model are as follows:
The utility model can be at third party's factor (physical state of radio-frequency (RF) tag and residing environmental parameter) control third party's sensitive element of generation path or the variation of opening circuit down by setting up in radio-frequency (RF) tag, change the connected mode of label antenna and label chip, when radio-frequency (RF) tag was ultra-high frequency RFID label, the change of the connected mode of label antenna and label chip can change the impedance configuration mode (being impedance matching or mismatch) of label antenna and label chip; When radio-frequency (RF) tag is high-frequency RF ID label or low frequency RF ID label, the change of the connected mode of label antenna and label chip means that label chip and label antenna successfully are being connected or are disconnecting switching between connecting, and then the readability of change radio-frequency (RF) tag, know that the physical state of radio-frequency (RF) tag and residing environmental parameter are third party's factor status information.By increasing obtaining of these third party's factor status informations, can open up the application of radio-frequency (RF) tag, satisfy user's different demands.
Description of drawings
The controlled radio-frequency (RF) tag of read-write of the present utility model is provided by following embodiment and accompanying drawing.
Figure 1 shows that existing label antenna does not form the structural representation of the radio-frequency (RF) tag of closed-loop path;
Figure 2 shows that existing label antenna forms the structural representation of the radio-frequency (RF) tag of closed-loop path;
Figure 3 shows that the structural representation of the radio-frequency (RF) tag that the read-write of the utility model embodiment 1 and embodiment 2 is controlled;
Figure 4 shows that the process flow diagram of first kind of situation of the monitoring method of the radio-frequency (RF) tag that the read-write of the utility model embodiment 1 is controlled;
Figure 5 shows that the process flow diagram of second kind of situation of the monitoring method of the radio-frequency (RF) tag that the read-write of the utility model embodiment 1 is controlled;
Figure 6 shows that the process flow diagram of the third situation of the monitoring method of the radio-frequency (RF) tag that the read-write of the utility model embodiment 1 is controlled;
Figure 7 shows that the process flow diagram of the 4th kind of situation of the monitoring method of the radio-frequency (RF) tag that the read-write of the utility model embodiment 1 is controlled;
Figure 8 shows that the structural representation of the radio-frequency (RF) tag that the read-write of the utility model example 3 is controlled.
Among the figure, 1-label chip, 2-label antenna, 3-third party's sensitive element (tongue tube or pressure transducer or temperature sensor or other forms).
Embodiment
Below will be described in further detail the controlled radio-frequency (RF) tag of read-write of the present utility model.
Below with reference to accompanying drawings the utility model is described in more detail, has wherein represented preferred embodiment of the present utility model, should be appreciated that those skilled in the art can revise the utility model described here and still realize advantageous effects of the present utility model.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as to restriction of the present utility model.
For clear, whole features of practical embodiments are not described.In the following description, be not described in detail known function and structure, because they can make the utility model because unnecessary details and confusion.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details, for example, change into another embodiment by an embodiment according to relevant system or relevant commercial restriction to realize developer's specific objective.In addition, will be understood that this development may be complicated and time-consuming, but only be routine work to those skilled in the art.
For the purpose of this utility model, feature are become apparent, embodiment of the present utility model is further described below in conjunction with accompanying drawing.It should be noted that accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of aid illustration the utility model embodiment lucidly.
Core concept of the present utility model is to set up one to be subjected to third party's sensitive element of third party's controlling factors to change the framework and the encapsulation of label chip and label antenna easily in the structure of radio-frequency (RF) tag, thereby make the impedance configuration mode of label antenna and label chip be subjected to the control of third party's factor (as residing physical state of radio-frequency (RF) tag itself and external environmental information), realize the certainty coupling of label antenna and label chip and the transformation between the certainty mismatch, finally cause radio-frequency (RF) tag under the situation of read-write property certainty (promptly in reading and writing device antenna radiation effective range), change into not read-write completely; Perhaps under the situation of read-write property certainty, to not read-writely revert to read-write state, and whether change according to the readability of radio-frequency (RF) tag under the inevitable situation of read-write property and to know whether third party's factor reaches certain state (setting value), thereby can not have under the prerequisite of I/O function in radio-frequency (RF) tag, know radio-frequency (RF) tag internal information third party's factor status information in addition, effectively expanded the application scenario of radio-frequency (RF) tag.
The controlled radio-frequency (RF) tag of this read-write is magnet controlled " prohibit/can read and write " radio-frequency (RF) tag.See also Fig. 3, the radio-frequency (RF) tag that this read-write is controlled, comprise label chip 1 and label antenna 2, described label chip 1 is connected with described label antenna 2, described radio-frequency (RF) tag also comprises the third party's sensitive element 3 that is subjected to third party's controlling factors, described third party's sensitive element 3 is connected with label antenna 2, described third party's sensitive element 3 is arranged on the position that can make label antenna 2 form the closed-loop path or disconnect the closed-loop path, described third party's sensitive element 3 under the effect of third party's factor at path or open circuit and switch between two states, when radio-frequency (RF) tag was ultra-high frequency RFID label, the path of described third party's sensitive element or off state made label antenna and label chip impedance matching or mismatch; When radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, the path of described third party's sensitive element or off state made label antenna successfully be connected with label chip or disconnect connection.Make that promptly radio-frequency (RF) tag is that the readability that takes place under the readable situation of certainty changes in reading and writing device antenna radiation effective range.Radio-frequency (RF) tag described in the present embodiment is a ultra-high frequency RFID label, and promptly ultrahigh-frequency radio-frequency tag also is UHF RFID.
In the present embodiment, described third party's factor is the magnetic field of described radio-frequency (RF) tag environment of living in, and third party's sensitive element 3 is a magneto sensor.In the present embodiment, described magneto sensor adopts tongue tube.In place that magnetic field is arranged and the place that does not have magnetic field, the duty of tongue tube is distinct, and it has conducting and disconnects two states.Utilize this characteristic of tongue tube, the user can change the change in location of judging this radio-frequency (RF) tag by the readability of the controlled radio-frequency (RF) tag of this read-write.Be installed on the portable door of a fan as reading and writing controlled radio-frequency (RF) tag, this radio-frequency (RF) tag moves along with moving of door, and magnet (promptly producing the parts in magnetic field) is arranged on the position that can influence and control the readability of this radio-frequency (RF) tag when door is opened.In case, door is opened, this radio-frequency (RF) tag can be subjected to the influence in the magnetic field that magnet produces, third party's sensitive element 3 (being tongue tube) is at path or open circuit and switch between two states, thereby make the impedance configuration of label chip 1 and label antenna 2 change (promptly between impedance matching and impedance mismatching, switching), and then make the readability of radio-frequency (RF) tag change.Thereby the user can change the switch situation of monitoring this according to the readability of radio-frequency (RF) tag.
The method for making of the radio-frequency (RF) tag (magnet controlled " prohibit/can read and write " radio-frequency (RF) tag) that this read-write is controlled is as follows: at first, we select the radio-frequency (RF) tag of a routine, after the structure of knowing label antenna, again label antenna is reequiped (different along with antenna structure and tongue tube initial characteristic, both also are different in conjunction with the effect that is reached) here.Make described third party's sensitive element and described label antenna form the closed-loop path, described third party's sensitive element is determining the folding of described closed-loop path in path or the switching between two states of opening circuit, when radio-frequency (RF) tag was ultra-high frequency RFID label, the folding of described closed-loop path determined described label antenna and label chip impedance matching or mismatch; Certainly, when radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, the folding of described closed-loop path determined described label antenna successfully to be connected with label chip or disconnects connection.Suppose that label antenna itself does not form the closed-loop path, we can add under the normality tongue tube for open circuit in label antenna, as shown in Figure 3 so.When tongue tube was subjected to magnetic field control to become path, described tongue tube and label antenna constituted the closed-loop path.
The same under the radio-frequency (RF) tag normality through repacking like this with conventional radio-frequency (RF) tag performance, if but radio-frequency (RF) tag is in the magnetic field, then the tongue tube duty changes, become off state from open-circuit condition, thereby make that closure returns to disconnect originally, make label chip 1 and label antenna impedance mismatching, at this moment, the radio-frequency (RF) tag after the repacking just can't be read and write in this case.If opposite adding is normally closed tongue tube under the normality, then the radio-frequency (RF) tag after the repacking be under normal conditions for reading and writing, and then recovers radio-frequency (RF) tag original function (promptly can read and write) after entering magnetic field.
Identical reason adds in the label antenna of routine has the radio-frequency (RF) tag of closed-loop path and is normally closed tongue tube under the normality, and the radio-frequency (RF) tag after also realizing reequiping can be read and write under normal conditions, loses efficacy after entering magnetic field.Otherwise add the tongue tube for often opening under the normality in the label antenna of routine has the radio-frequency (RF) tag of closed-loop path, the radio-frequency (RF) tag after also realizing reequiping can not be read and write under normal conditions, recovers radio-frequency (RF) tag original function (can read and write) after entering magnetic field.
Then, we select a magnet as magnetic field, radio-frequency (RF) tag after this repacking can be placed on movably that (but label must be exposed to this object outside on object such as the door, be the position that read write line can effectively be read and write label), place the position of magnet again, when this object had this position of one side process of label, magnetic field must exert an influence to the magnetic control label); At last, in order to make the perfect in shape and function of the controlled radio-frequency (RF) tag of read-write, we make a symbiosis label on its next door, guarantee magnetic control label operate as normal.
The monitoring method of the radio-frequency (RF) tag that the utility model read-write is controlled promptly uses method as follows: it comprises the steps:
The first step is set and to be made third party's sensitive element at path or the setting value of the third party's factor switched between two states of opening circuit, and the initial readability of definite radio-frequency (RF) tag (radio-frequency (RF) tag is readable or readable state not when being original state);
In second step, radio-frequency (RF) tag is placed on the monitoring point;
Whether the 3rd step sent carrier signal through read write line by sky alignment radio-frequency (RF) tag, and change according to the readability of radio-frequency (RF) tag and to know whether third party's factor arrives setting value.
In described the 3rd step, comprise following four kinds of situations:
First kind of situation, the radio-frequency (RF) tag read-write property of (initially) under normal conditions are read-write state, i.e. the impedance matching of label antenna and label chip.In the time of the impedance matching of label antenna and label chip, label antenna itself might have the access node structure that the closed-loop path may not have the closed-loop path yet.Itself not forming the closed-loop path during with the impedance matching of label antenna and label chip is example, in order to make that radio-frequency (RF) tag read-write property under normal conditions is read-write state, then described third party's sensitive element (being tongue tube) need be arranged on the position that can make described label antenna form the loop, and this third party's sensitive element is the tongue tube of often opening under normal conditions.Certainly, during the impedance matching of label antenna and label chip, label antenna also can have the closed-loop path, at this moment, described third party's sensitive element is arranged in this closed-loop path, and this third party's sensitive element is normally closed tongue tube under normal conditions, makes that also radio-frequency (RF) tag read-write property under normal conditions is read-write state.
When under the situation that is not subjected to third party's controlling factors (be third party's factor do not reach tongue tube is being opened circuit and path between switch the original start value time), this radio-frequency (RF) tag keeps read-write state.
The roughly workflow of radio-frequency (RF) tag is to see also Fig. 4 in this case:
1) read write line sends carrier signal (energy content radiation and operational order) through sky alignment radio-frequency (RF) tag
2) radio-frequency (RF) tag is not subjected to third party's controlling factors;
3) when radio-frequency (RF) tag is ultra-high frequency RFID label, label chip and label antenna impedance matching; Certainly, when radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, label chip successfully was connected with label antenna;
4) label chip obtains maximum carrier wave emittance and complete instruction from label antenna;
5) the label chip operating voltage is set up, and command reception is finished, and handles through internal calculation;
6) desired data is sent to read write line through label antenna;
7) read write line success reading tag data;
As a result, single job is finished, and read write line is learnt:
A. radio-frequency (RF) tag internal information.
B. radio-frequency (RF) tag is not subjected to third party's controlling factors, comparison default (being third party's factor setting value),
Obtain third party's factor status information.
Second kind of situation, radio-frequency (RF) tag read-write property under normal conditions is read-write state, i.e. the impedance matching of label antenna and label chip.During the impedance matching of label antenna and label chip, if label antenna has the closed-loop path, then described third party's sensitive element is arranged in this closed-loop path, and this third party's sensitive element is normally closed tongue tube under normal conditions, so that radio-frequency (RF) tag read-write property under normal conditions is read-write state.
Changing under the situation that is subjected to third party's controlling factors can not read-write state.Promptly under the effect in magnetic field, tongue tube switches to open-circuit condition (opening circuit) from normally off (path).The roughly workflow of radio-frequency (RF) tag is under this state, sees also Fig. 5:
1) read write line sends carrier signal (energy content radiation and operational order) through sky alignment radio-frequency (RF) tag;
2) radio-frequency (RF) tag is subjected to third party's controlling factors;
3) when radio-frequency (RF) tag is ultra-high frequency RFID label, label chip and label antenna impedance mismatching; Certainly, when radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, label chip disconnected with label antenna and being connected;
4) label chip fails to obtain enough carrier wave emittance and complete instruction from label antenna;
5) the label chip operating voltage can not be set up, and can't receive instruction;
6) label chip is not done any reaction;
7) read write line can not reading tag data;
As a result, single job is finished, and read write line is learnt:
A. radio-frequency (RF) tag is subjected to third party's controlling factors, and comparison default (being third party's factor setting value) obtains
Third party's factor status information.
In addition, for confirming can not can being doubled to confirm of under the state of inevitable read-write property radio-frequency (RF) tag, promptly set up a symbiosis label by set up the auxiliary conventional radio frequency label of a symbiosis in the monitoring point by the validity of read-write state.When the symbiosis label can be read and write, and radio-frequency (RF) tag of the present utility model is when can not be read and write, and then can confirm the read-write property of radio-frequency (RF) tag of the present utility model in reading and writing device antenna radiation effective range owing to be subjected to the influence of third party's factor and become not read-write.
The third situation, radio-frequency (RF) tag read-write property under normal conditions is can not read-write state (being the impedance mismatching of label antenna and label chip).In the time of the impedance mismatching of label antenna and label chip, label antenna can be designed to the closed-loop path as required or also can be designed to not have the syndeton of closed-loop path.Not forming the closed-loop path during with the impedance mismatching of label antenna and label chip is example, described third party's sensitive element (being tongue tube) is arranged on the position that can make described label antenna form the loop, and this third party's sensitive element is the tongue tube often opened under normal conditions, and making that radio-frequency (RF) tag read-write property under normal conditions remains can not read-write state.Certainly, during the impedance mismatching of label antenna and label chip, label antenna also can have the closed-loop path, at this moment, described third party's sensitive element is arranged in this closed-loop path, and this third party's sensitive element is normally closed tongue tube under normal conditions, and making that radio-frequency (RF) tag read-write property under normal conditions remains can not read-write state.
Under the situation that is subjected to third party's factor (magnetic field) control, this radio-frequency (RF) tag reverts to read-write state.The roughly workflow of radio-frequency (RF) tag is as follows under this state, sees also Fig. 6:
1) read write line sends carrier signal (energy content radiation and operational order) through sky alignment radio-frequency (RF) tag;
2) radio-frequency (RF) tag is subjected to third party's controlling factors;
3) when radio-frequency (RF) tag is ultra-high frequency RFID label, label chip and label antenna impedance matching.Certainly, when radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, label chip successfully was connected with label antenna;
4) label chip obtains maximum carrier wave emittance and complete instruction from label antenna;
5) the label chip operating voltage is set up, and command reception is finished, and handles through internal calculation;
6) desired data is sent to read write line through label antenna;
7) read write line success reading tag data.
As a result, single job is finished, and read write line is learnt:
A. radio-frequency (RF) tag internal information.
B. radio-frequency (RF) tag is subjected to third party's controlling factors, and comparison default (being third party's factor setting value) obtains third party's factor status data.
In addition, for confirming can not can being set up the auxiliary conventional radio frequency label of a symbiosis in the monitoring point and double to confirm of under the state of inevitable read-write property label by the validity of read-write state.
The 4th kind of situation, radio-frequency (RF) tag read-write property under normal conditions is can not read-write state (being the impedance mismatching of label antenna and label chip).Having the closed-loop path with label antenna itself is example, during the impedance mismatching of label antenna and label chip, described third party's sensitive element is arranged in this closed-loop path, and this third party's sensitive element is normally closed tongue tube under normal conditions, and making that radio-frequency (RF) tag read-write property under normal conditions remains can not read-write state.
Under the situation that is not subjected to third party's factor (magnetic field) control, maintenance can not read-write state.The roughly workflow of radio-frequency (RF) tag is as follows under this state, sees also Fig. 7:
1) read write line sends carrier signal (energy content radiation and operational order) through sky alignment radio-frequency (RF) tag;
2) radio-frequency (RF) tag is not subjected to third party's controlling factors;
3) when radio-frequency (RF) tag is ultra-high frequency RFID label, label chip and label antenna keep impedance mismatching; Certainly, when radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, label chip kept disconnecting with label antenna and is connected;
4) label chip fails to obtain enough carrier wave emittance and complete instruction from label antenna;
5) the label chip operating voltage can not be set up, and can't receive instruction;
6) label chip is not done any reaction;
7) read write line can not reading tag data.
As a result, single job is finished, and read write line is learnt:
A. radio-frequency (RF) tag is subjected to third party's controlling factors, and comparison default (being third party's factor setting value) obtains third party's factor status data.
In addition, whether described readability according to radio-frequency (RF) tag changes that to know whether third party's factor arrives the concrete determination methods of setting value as follows: when third party's factors vary during to setting value, third party's sensitive element generation path and open circuit between switching, make the impedance configuration of label antenna and label chip between mismatch and coupling, switch, thereby change the readability of radio-frequency (RF) tag, and then know third party's factor by inference and arrived setting value; When third party's factor does not reach setting value, third party's sensitive element path does not take place and open circuit between switching, the impedance configuration of label antenna and label chip remains unchanged, and then can know third party's factor by inference and do not reach setting value.Thereby, adopt the utility model not only can know the information that radio frequency tag chip inside carries, can also know the third party's factor status information except that label chip information, thereby increase the function of radio-frequency (RF) tag, opened up the application of radio-frequency (RF) tag.
The difference of present embodiment and embodiment 1 is: see also Fig. 3, and the pressure (air pressure) that described third party's factor is a described radio-frequency (RF) tag environment of living in, third party's sensitive element 3 is a pressure transducer.The controlled radio-frequency (RF) tag of this read-write is pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag.
By set up pressure transducer (being third party's sensitive element 3) in the inside of existing radio-frequency (RF) tag, soon tongue tube replaces to pressure transducer among the embodiment 1, forms this pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag.This pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag can make the user realize being in can know also among certain specific environment whether the air pressure in this environment changes.Now in the life, the pressure transducer of application all is the variation that comes the perception ambient pressure by resistance strain gage mostly, and promptly this force-sensing resistor value is different under different air pressure.Utilize this point, we can be installed in pressure transducer on the conventional radio-frequency (RF) tag, realize the function of pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag.
Concrete enforcement is as follows: at first, need a conventional radio-frequency (RF) tag, this radio-frequency (RF) tag is not required, can choose at random; Then,, pressure transducer is installed on the label antenna of radio-frequency (RF) tag, satisfies the label chip of the radio-frequency (RF) tag after the repacking and the impedance matching of label antenna simultaneously according to the tag antenna structure of this radio-frequency (RF) tag; At last, symbiosis label of the other placement of the radio-frequency (RF) tag after repacking is put into two labels among the environment (being the monitoring point) of the required monitoring of user then.Initial value by the set pressure sensor, we can learn the initialization state of pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag, and we can make and readablely under its normality also can be arranged to not readable under the normality (only reach certain air pressure and could recover the radio-frequency (RF) tag original function).
For example the environment that need monitor of user is the environment of a constant air pressure, and in a single day this ambient pressure changes and just must propose to report to the police.So this situation we just pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag be designed under this ambient pressure for readable under the normality, if like this under the constant situation of ambient pressure, read write line just can be read the EPC sign indicating number of two labels (being the utility model radio-frequency (RF) tag and symbiosis label), in case the ambient pressure of monitoring point changes, so pressure-controlled " prohibit/can read and write " radio-frequency (RF) tag just will lose efficacy, and read write line is with regard to the read-only information that is the symbiosis label to a label.At this time just can propose to have reported to the police to terminal.This method can be applied among the inaccessiable environment of certain operations personnel, comes the air pressure of real-time purpose monitoring point by remote operation.
Present embodiment and embodiment 1 or embodiment 2 difference be: see also Fig. 8, described radio-frequency (RF) tag is that low frequency is signed radio-frequency (RF) tag, and described third party's sensitive element 3 is connected in the link circuit of described label chip 1 and described label antenna 2.Described third party's factor is the temperature of described radio-frequency (RF) tag environment of living in, and third party's sensitive element 3 is a temperature sensor.The controlled radio-frequency (RF) tag of this read-write is that Temperature Control Type " prohibit/can be read and write " radio-frequency (RF) tag.The principle of work of this temperature control radio-frequency (RF) tag and the principle of work of voltage-controlled radio-frequency (RF) tag are basic identical, and it is testing environment air pressure and another one is an environment temperature that difference is exactly one.This radio-frequency (RF) tag can be applied to some mushrooms, in the culturing room such as vaccine, for the user provides real-time temperature monitoring.
The utility model can be applicable to ultrahigh frequency RFID field, high-frequency RF ID field, low frequency RF ID field.Below all be some application scenarios of the controlled radio-frequency (RF) tag of read-write, certainly, use this theory, the utility model can also be according to user's request, select the controlled radio-frequency (RF) tag of read-write for use, realize the physical state of each required radio-frequency (RF) tag or the monitoring of environmental parameter of living in variation with different third party's sensitive elements.Promptly in same environment, make up according to user's request the controlled radio-frequency (RF) tag of several read-writes is set, comprise that several can monitor the controlled radio-frequency (RF) tag of read-write of different temperatures or spot pressure or radio-frequency (RF) tag change in displacement, monitor third party's factor status information of various required radio-frequency (RF) tag, to satisfy user's various demands.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (5)
1. read and write controlled radio-frequency (RF) tag for one kind, described radio-frequency (RF) tag comprises label chip and label antenna, described label chip is connected with described label antenna, it is characterized in that, described radio-frequency (RF) tag also comprises the third party's sensitive element that is subjected to third party's controlling factors, described third party's sensitive element is connected with label antenna, described third party's sensitive element under the effect of third party's factor at path or open circuit and switch between two states, make label antenna and label chip impedance matching or mismatch, when radio-frequency (RF) tag was ultra-high frequency RFID label, the path of described third party's sensitive element or off state made label antenna and label chip impedance matching or mismatch; When radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, the path of described third party's sensitive element or off state made label antenna successfully be connected with label chip or disconnect connection.
2. the controlled radio-frequency (RF) tag of read-write as claimed in claim 1, it is characterized in that, described third party's sensitive element and described label antenna form the closed-loop path, described third party's sensitive element is determining the folding of described closed-loop path in path or the switching between two states of opening circuit, when radio-frequency (RF) tag was ultra-high frequency RFID label, the folding of described closed-loop path determined described label antenna and label chip impedance matching or mismatch; When radio-frequency (RF) tag was high-frequency RF ID label or low frequency RF ID label, the folding of described closed-loop path determined described label antenna successfully to be connected with label chip or disconnects connection.
3. the controlled radio-frequency (RF) tag of read-write as claimed in claim 1 is characterized in that described third party's factor is the magnetic field of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a magneto sensor.
4. the controlled radio-frequency (RF) tag of read-write as claimed in claim 1 is characterized in that described third party's factor is the pressure of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a pressure transducer.
5. the controlled radio-frequency (RF) tag of read-write as claimed in claim 1 is characterized in that described third party's factor is the temperature of described radio-frequency (RF) tag environment of living in, and third party's sensitive element is a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201183721U CN201594278U (en) | 2010-01-28 | 2010-01-28 | Radio frequency label with controllable read and write |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201183721U CN201594278U (en) | 2010-01-28 | 2010-01-28 | Radio frequency label with controllable read and write |
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| CN201594278U true CN201594278U (en) | 2010-09-29 |
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| CN2010201183721U Expired - Lifetime CN201594278U (en) | 2010-01-28 | 2010-01-28 | Radio frequency label with controllable read and write |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763526B (en) * | 2010-01-28 | 2012-06-13 | 上海华申智能卡应用系统有限公司 | Radio frequency tag capable of controlling read-write and monitoring method thereof |
| CN102722746A (en) * | 2012-06-01 | 2012-10-10 | 北京物资学院 | RFID label with thermosensitive device, RFID system and temperature detection method |
| CN110738807A (en) * | 2019-09-24 | 2020-01-31 | 广州市昊鑫计算机科技有限公司 | RFID electronic tags for intelligent retail |
| CN112036535A (en) * | 2020-09-18 | 2020-12-04 | 上扬无线射频科技扬州有限公司 | Fragile anti-fake function RFID label of two-sided antenna structural design |
-
2010
- 2010-01-28 CN CN2010201183721U patent/CN201594278U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763526B (en) * | 2010-01-28 | 2012-06-13 | 上海华申智能卡应用系统有限公司 | Radio frequency tag capable of controlling read-write and monitoring method thereof |
| CN102722746A (en) * | 2012-06-01 | 2012-10-10 | 北京物资学院 | RFID label with thermosensitive device, RFID system and temperature detection method |
| CN110738807A (en) * | 2019-09-24 | 2020-01-31 | 广州市昊鑫计算机科技有限公司 | RFID electronic tags for intelligent retail |
| CN112036535A (en) * | 2020-09-18 | 2020-12-04 | 上扬无线射频科技扬州有限公司 | Fragile anti-fake function RFID label of two-sided antenna structural design |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100929 Effective date of abandoning: 20100128 |