CN202523094U - Electronic shelf label with low power consumption and high safety - Google Patents
Electronic shelf label with low power consumption and high safety Download PDFInfo
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- CN202523094U CN202523094U CN2012201467648U CN201220146764U CN202523094U CN 202523094 U CN202523094 U CN 202523094U CN 2012201467648 U CN2012201467648 U CN 2012201467648U CN 201220146764 U CN201220146764 U CN 201220146764U CN 202523094 U CN202523094 U CN 202523094U
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Abstract
The utility model discloses an electronic shelf label with low power consumption and high safety, which comprises a wireless transceiver, a display screen module and a singlechip controller, wherein the singlechip controller is connected between the wireless transceiver and the display screen module, the singlechip controller is used for decrypting information received by the wireless transceiver and then transmitting the decrypted information to the display screen module, or encrypting information transmitted by the display screen module and then transmitting the encrypted information to the wireless transceiver. The electronic shelf label with low power consumption and high safety has the advantages of low consumption and high safety in the premise of no addition of manufacture cost and process.
Description
Technical field
The utility model relates to a kind of electronic shelf label, the electronic shelf label of the high safety of particularly a kind of low-power consumption.
Background technology
Electronic shelf label (as shown in Figure 1) is a product that rises in recent years, and it can directly replace traditional papery shelf label, makes information transmission more accurately with fast, also has the effect of environmental protection simultaneously.Set up and connect up for the ease of system; Some products recently more adopt the mode of wireless numerical digit communication; To improve the convenience of total system in practical application; Let electronic shelf label just can move on to new place at an easy rate, can reply again normally and use at once along with goods or the change of shelf ground.But because the considering of difficulty that in shelf, installs electric wiring and operation safety, the electronic shelf label that these are wireless all is that the battery of dress is its unique power source in directly using usually.In addition again because of receiving the restriction of the external form size of label own; Electronic shelf label can only adopt button cell usually; The electric capacity of this battery is limited; And businessman is not because considering of manual work and battery expense hopes often to change battery, and these have set the limitations on the power supply relatively for the wireless electron shelf label.
Though radio communication has its above-mentioned convenience, the transmission of its signal be directly be exposed to around the space in.As long as know its employed frequency and information modulation technique, anyone can take the transceiver of a same frequency and modulation technique, directly receives all transmission information.In order to avoid leaking outside or being distorted arbitrarily of transmitted breath by other people, generally in design, all can encrypt earlier the information that is passed, see off by transceiver then.The transceiver of receiving end then after receiving information, is deciphered again, passes to the information of restoring the controller processing of next stage then.With wireless electron shelf label now, its to use be with the transceiver of 2.4GHz Zigbee as major technique.Zigbee transceiver (as shown in Figure 2) all adds the function of 3DES encryption and decryption usually.General wireless electron shelf label just uses the technology of this 3DES enciphering and deciphering algorithm, to the information that is passed, sees through the Zigbee transceiver and adds accordingly, deciphers, and guaranteeing the safety of information transmission, and prevents that the invador from distorting mala fide.
Utilizing transceiver that information is made the 3DES encryption and decryption, under the situation that power supply is not restricted, is a kind of quite reasonable selection mode.But this button cell that can only adopt electric weight limited that is chosen in as the wireless electron shelf label of power source, but is a big problem, and its reason is to be following several principal elements:
1, the radio-frequency line of transceiver itself institute consumes power, original other the inner digital control circuits of electronic shelf label that just are higher than far away.Do the work of 3DES encryption and decryption by transceiver, more will increase its extra electric quantity consumption widely.
2,3DES adopts complicated and repeated numerical digit algorithm, though its privacy degrees is higher, relatively also can consume suitable electric energy.If use the chip (as shown in Figure 2) of transceiver middle controller, the algorithm of its encryption and decryption is to be operated by firmware.Its arithmetic speed is directly proportional with the operation clock frequency of chip, though slower clock frequency can cause long operation time, because of the power consumption of electric weight is to be directly proportional with the quadratic power of clock frequency, so the electric energy that this kind situation is consumed is also fewer.And clock frequency faster, though can shorten operation time, power consumption will be with the increase of clock frequency, and increases with the speed of quadratic power ratio.So make the encryption and decryption of information with transceiver, just must spend a lot of thoughts, power consumption many or few with encryption and decryption operation time the balance between long or short do a selection, yet this but is difficult to reach the arrangement that makes the best of both worlds.
3, do the work of encryption and decryption with transceiver, also might cause another problem.Though the Zigbee transceiver is the information of only transmission a small amount of mostly, so needed transmission or transmitting-receiving working time just relatively can tail off, this also is the Zigbee transceiver, can be than the key factor of other wireless technologys than power saving.If but the work that it also need make encryption and decryption simultaneously yet will continue to keep original transmission speed, then the operation clock frequency of chip needs to improve, and this will increase the power consumption of its electric weight soon.If do not increase clock frequency, then the speed of information transmission will be slack-off.This will be more obvious in the electronic labelling system of hypermarket.The hypermarket has two to 30,000 electronic tags usually, and transmission of Information generally all is through Coordinator (communication device such as Fig. 3).Communication device can about 300 to 500 electronic tags of management and control; If encryption and decryption work causes slow one second kind on speed to information transmission, the reception of each label; Then total system will be slow 300 to 500 seconds; Be that system will many five to eight minutes than the time of original expectation, could information send fully distribute complete.If improve the electronic tag quantity of its management and control for the money of economizing the communication device, then system's equal proportion change accordingly is slow more.This under the timely and in good time more new demand of pricing information, will form a challenge that is difficult to completion to the sales field.
The utility model content
The purpose of the utility model provides the electronic shelf label and the information processing method thereof of the high safety of a kind of low-power consumption, and to solve in the existing electronic bin tag system, transceiver causes the high problem of power consumption because of the information high degree of safety.
The utility model proposes the electronic shelf label of the high safety of a kind of low-power consumption, comprises transceiver, display screen module and singlechip controller.Singlechip controller is connected between transceiver and the display screen module; Singlechip controller is transferred to the display screen module after being used for the information that transceiver receives deciphered, or is transferred to transceiver after display screen module signal transmitted encrypted.
Further, singlechip controller further comprises processor, firmware mode and key storage block again.Processor links to each other with the display screen module with transceiver respectively, is used to realize transmission of Information and processing between transceiver and the display screen module; Firmware mode links to each other with processor, is used to the encryption or the deciphering of the information of carrying out; Key storage block links to each other with processor, is used to deposit the required key of encryption and decryption.
Further, singlechip controller is encrypted or is deciphered information through the mode of XOR algorithm.
Further, transceiver further comprises Zigbee radio frequency and modulation circuit and controller again, and Zigbee radio frequency and modulation circuit are connected with antenna, and controller links to each other with Zigbee radio frequency and modulation circuit and singlechip controller respectively.
Utility model is with respect to prior art, and the beneficial effect of the utility model is: the utility model is with more easy technology, directly by the single-chip microcomputer in the electronic shelf label, is utilized in operating time dead, carries out the work of encryption and decryption.The work that can let the Zigbee transceiver only specially do the information wireless transmission and receive like this, so the power consumption of electric weight can not increase in large quantities, the speed of information transmission can not descend yet, the safety of information is also sufficiently ensured simultaneously.The deviser need especially not take time and ask for the balance of three aspects on electric energy power consumption, information security and transmission speed.In addition again because of not using extra electronic circuit or part, so do not increase the cost of label yet.Because of there not being extra electronic circuit, during fabrication, can not cause the reduction of product yield yet.So the utility model can reach the purpose of the required safety protecting mechanism of label reducing cost, simplify manufacturing process, practicing thrift under the product electric energy power consumption.
Description of drawings
Fig. 1 is a kind of enforcement illustration of the electronic shelf label of the high safety of the utility model low-power consumption;
Fig. 2 is a kind of embodiment Organization Chart of general electronic shelf label;
Fig. 3 is a kind of embodiment Organization Chart of the wireless contact device of general Zigbee;
Fig. 4 is the comparatively detailed a kind of embodiment Organization Chart of electronic shelf label of the high safety of the utility model low-power consumption.
Embodiment
Specify the utility model below in conjunction with accompanying drawing.
See also Fig. 4, it is a kind of embodiment Organization Chart of the electronic shelf label of the high safety of the utility model low-power consumption, and it comprises Zigbee transceiver (transceiver) 1, display screen module 3 and singlechip controller 2.Singlechip controller 2 is connected between transceiver 1 and the display screen module 3; Be transferred to display screen module 3 after being used for the information that transceiver 1 receives deciphered, or be transferred to transceiver 1 after display screen module 3 signal transmitted are encrypted.
The utility model is utilized in operating time dead by singlechip controller 2; Carry out the work of encryption and decryption; The work that can let 1 of transceiver specially do the information wireless transmission and receive like this; So the power consumption of transceiver 1 electric weight can not increase in large quantities, the speed of information transmission can not descend yet, and the safety of information is also sufficiently ensured simultaneously.The deviser need especially not take time and ask for the balance of three aspects on electric energy power consumption, information security and transmission speed.
See also Fig. 2; It is the embodiment Organization Chart of general electronic shelf label; Fig. 4 compares with the utility model examples of implementation; The transceiver 1 of the utility model embodiment comprises Zigbee radio frequency and modulation circuit 4 and controller 5, and controller 5 links to each other with Zigbee radio frequency and modulation circuit 4 and singlechip controller 2 respectively.This Zigbee transceiver 1 does not have the circuit of 3DES encryption and decryption, sends out so the transceiver of the utility model is only made pure wireless messages, does not do the work of encryption and decryption.Compare with general Zigbee transceiver, lacked the work of encryption and decryption, also reduced and carried out the required electric energy power consumption of these work, thereby reach the target of low-power consumption.
The ZigBee technology be a kind of closely, low-power consumption, low information transfer rate speed, double-direction radio mechanics of communication cheaply again simultaneously.Be applicable to the application of carrying out data transmission between the various electronic equipments that distance is short, low in energy consumption and transfer rate is not high and periodic data, intermittent data and the transmission of low reaction time data typically being arranged.Transceiver 1 adopts the ZigBee technology, so the utility model also has the characteristics of low energy consumption simultaneously.
Wherein, it is the simple mode of power saving again that the algorithm of encryption and decryption can be selected, such as XOR algorithm (Exclusive-OR).The principle of XOR algorithm is:
Once " XOR " expressly becomes ciphertext afterwards;
Twice " XOR " afterwards, ciphertext is decrypted into expressly;
Be a^b=＞c, c^b=＞a
Wherein, a is the plaintext that needs encryption, and b is a key, and c is a ciphertext, and " ^ " is XOR.When promptly encrypting, firmware mode 7 carries out the key of storage in display screen module 3 signal transmitted and the key storage block 8 to obtain ciphertext behind the XOR, again ciphertext is transferred to transceiver 1 through processor 6 and sends.During deciphering, the key of storage carries out obtaining expressly behind the XOR in ciphertext that firmware mode 7 is next with transceiver 1 transmission and the key storage block 8, shows to display screen module 3 plaintext transmission through processor 6 then.The enciphering and deciphering algorithm of this symmetrical expression is very simple; Quick again; As long as the key of keeping encryption and decryption is in key storage block 8, and the key length of selection appropriateness, its information secret and safe degree can be suitable with 3DES; But do not have the such complicacy of 3DES in the computing, can reduce many unnecessary power consumptions, yet can the not slow down transmission speed of information simultaneously.Certainly; The user also can select to use other enciphering and deciphering algorithm, then the mode of enciphering and deciphering algorithm with a piece of wood serving as a brake to halt a carriage spare is embodied, and the user can be the enciphering and deciphering algorithm of finishing writing; Directly burn at an easy rate in the singlechip controller 2, to reach the customized needs of low-power consumption, high security.
The information processing method of the electronic shelf label of the high safety of the utility model low-power consumption, it is divided into the process of handling reception information and the process of handling information to be sent.
The process of handling reception information comprises step: through singlechip controller the wireless messages that receives is deciphered;
The process of handling information to be sent comprises step: encrypt to sent information through singlechip controller.
The utility model utilizes singlechip controller instead of wireless transceiver to carry out the encryption and decryption work of information, and the work that lets transceiver only specially do the information wireless transmission and receive reduces the whole power consumption of electronic shelf label greatly.Wherein, the encryption and decryption of information can realize through the firmware of singlechip controller, and the algorithm of encryption and decryption can to select be the mode of simple power saving, such as XOR algorithm (Exclusive-OR).The enciphering and deciphering algorithm of this symmetrical expression is very simple, and is quick again, as long as keep the key of encryption and decryption, and selects the key length of appropriateness, and its information secret and safe degree can be suitable with 3DES, but do not need the extra power consumption of 3DES or influence the transmission speed of information.
More than the disclosed several specific embodiments that are merely the utility model; But the utility model is not limited thereto; Any those skilled in the art can think variation, only otherwise exceed the said scope of appended claims, all should drop in the protection domain of the utility model.
Claims (4)
1. the electronic shelf label of the high safety of a low-power consumption; Comprise a transceiver and a display screen module; It is characterized in that, also comprise a singlechip controller, be connected between this transceiver and this display screen module; Be transferred to this display screen module after being used for the information that this transceiver receives deciphered, be transferred to this transceiver after maybe this display screen module signal transmitted being encrypted.
2. the electronic shelf label of the high safety of low-power consumption as claimed in claim 1 is characterized in that this singlechip controller further comprises again:
One processor links to each other with this display screen module with this transceiver respectively, is used to realize transmission of Information and processing between this transceiver and this display screen module;
One firmware mode links to each other with this processor, is used to the encryption or the deciphering of the information of carrying out;
One key storage block links to each other with this processor, is used to deposit the required key of encryption and decryption.
3. the electronic shelf label of the high safety of low-power consumption as claimed in claim 1 is characterized in that this singlechip controller is encrypted or deciphered information through the mode of XOR algorithm.
4. like the high safe electronic shelf label of each described low-power consumption of claim 1～3; It is characterized in that; This transceiver further comprises a Zigbee radio frequency and a modulation circuit and a controller again; This Zigbee radio frequency and modulation circuit are connected with an antenna, and this controller links to each other with this Zigbee radio frequency and modulation circuit and this singlechip controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201467648U CN202523094U (en) | 2012-04-09 | 2012-04-09 | Electronic shelf label with low power consumption and high safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201467648U CN202523094U (en) | 2012-04-09 | 2012-04-09 | Electronic shelf label with low power consumption and high safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523094U true CN202523094U (en) | 2012-11-07 |
Family
ID=47106032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201467648U Expired - Fee Related CN202523094U (en) | 2012-04-09 | 2012-04-09 | Electronic shelf label with low power consumption and high safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523094U (en) |
-
2012
- 2012-04-09 CN CN2012201467648U patent/CN202523094U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20190409 |