CN206532318U - A kind of active RF card and its system with dormancy awakening function - Google Patents

A kind of active RF card and its system with dormancy awakening function Download PDF

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Publication number
CN206532318U
CN206532318U CN201720082691.3U CN201720082691U CN206532318U CN 206532318 U CN206532318 U CN 206532318U CN 201720082691 U CN201720082691 U CN 201720082691U CN 206532318 U CN206532318 U CN 206532318U
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card
active
frequency
module
circuit
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CN201720082691.3U
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彭颖
朱悦
王超
张明宇
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Wuhan ruinajie Semiconductor Co.,Ltd.
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Wuhan Rui Najie Electron Technology Co Ltd
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Abstract

The utility model is related to radio frequency arts, and in particular to a kind of active RF card and its system with dormancy awakening function, the utility model include:Including:It is provided with card body, card body:Power module, auxiliary signal receiving module, low-power consumption active card control module and main signal transceiver module;Main signal transceiver module is communicated by the radiofrequency signal of first frequency with outside radio-frequency apparatus;Power management module is connected with power module;Auxiliary signal receiving module is received to the radiofrequency signal of outside second frequency, and is demodulated into data message;Low-power consumption active card control module includes:Heng electricity areas and Fei Heng electricity areas, Heng electricity areas are used to monitor the data message that auxiliary signal receiving module is demodulated, and the power supply state of driving power supply management control Fei Heng electricity areas and main signal transceiver module.It greatly extends card service life to the utility model, efficiently solves the difficulty that manufacturer gets ready the goods on active card volume production.

Description

A kind of active RF card and its system with dormancy awakening function
Technical field
The utility model is related to radio frequency arts, and in particular to a kind of active RF card with dormancy awakening function with And a kind of control system of the active RF card with dormancy awakening function.
Background technology
Current REID is divided into no identifing source according to the supply mode of the energy, there is identifing source and semi-active three class. The without identifing source writes that distance is near, and price is low;There is identifing source to provide farther and write distance, but need battery to power, into This is some higher;It is semi-active to recognize then therebetween.The radio-frequency card of existing 2.4GHz frequency communications uses active side Formula is powered to realize that the circuit in the transmission of medium and long distance signal, active card is completely dependent on internal cell power supply, therefore internal electricity The power consumption on road is directly connected to the use time of battery and card.
On the premise of the restriction of existing battery technology and the limitation of active card cost, it is desirable to extend making for active card as far as possible With the time, outlet can only be sought in terms of how reducing circuit power consumption.At present major part manufacturer using more low-power consumption chip with And reduce power consumption as much as possible by way of software timing dormancy, but can not all be fully solved problem.Reason is current market On active card produce complete when, system begins to normal work, even if employing the method for software timing dormancy, battery Power consumption also should not be underestimated.No matter whether user begins to use the active card, its use time all has determined.If card Production shipment immediately and can not come into operation after completing, and the service life of the active card is not enough when will result in delivery.If By the way of the just production that receives orders, ordering goods, the busy season then can cause delivery cycle very long due to the required time of production, even Can not delivery just-in-time.The problem of this have become active card manufacturer is great.
Utility model content
To overcome drawbacks described above, the purpose of this utility model is to be that offer is a kind of there is the active of dormancy awakening function to penetrate Frequency card and a kind of control system of the active RF card with dormancy awakening function.
The purpose of this utility model is achieved through the following technical solutions:
The utility model is a kind of active RF card with dormancy awakening function, including:Set in card body, the card body Have:Power module, auxiliary signal receiving module, low-power consumption active card control module and main signal transceiver module;
The main signal transceiver module is communicated by the radiofrequency signal of first frequency with outside radio-frequency apparatus;
Power management module is connected with the power module;
The auxiliary signal receiving module is used to receive the radiofrequency signal of outside second frequency, and by second The radiofrequency signal of frequency is demodulated into data message;
The low-power consumption active card control module includes:Heng electricity areas and Fei Heng electricity areas, the Heng electricity areas and power management mould Block is connected, right for monitoring the data message that the auxiliary signal receiving module is demodulated, and after data message is received Received data message is compared with presupposed information, and according to comparative result driving power supply management control Fei Heng electricity areas and The power supply state of main signal transceiver module.
Further, the auxiliary signal receiving module includes:
Amplitude limiter circuit, the amplitude limiter circuit is provided with the antenna for the radiofrequency signal for being used to receive second frequency, and the amplitude limit Circuit is used to be converted to ac signal to the radiofrequency signal of accessed second frequency, and to the voltage amplitude of the ac signal Degree is defined;
Rectification circuit, the rectification circuit is connected with amplitude limiter circuit, for ac signal to be transformed into direct current telecommunications Number;
Mu balanced circuit, the mu balanced circuit is connected with rectification circuit, for carrying out voltage stabilizing to DC signal;
Electrification reset circuit, the electrification reset circuit is connected with the mu balanced circuit, for the direct current after voltage stabilizing The magnitude of voltage of electric signal is judged, if the magnitude of voltage reaches preset value, and reset is sent to low-power consumption active card control module Signal, makes low-power consumption active card control module in running order;
Data demodulation circuit, the data demodulation circuit is connected with the amplitude limiter circuit, for from the ac signal In demodulate data message, and the data message is sent into low-power consumption active card control module;
Clock extracting circuit, the clock extracting circuit is connected with the amplitude limiter circuit, for from the ac signal In extract clock information, and the clock information is sent into low-power consumption active card control module.
Further, the first frequency is 2.4GHz, and the second frequency is 13.56MHz.
Further, memory is provided with the low-power consumption active card control module, the memory is used for received Clock information and data message stored, and be preset with presupposed information.
Further, the memory is EEPROM.
A kind of control system of the active RF card with dormancy awakening function of the utility model, including:Second frequency Head, and active RF card as described above;The second frequency hair goes out the radiofrequency signal of second frequency, and by this The radiofrequency signal of two frequencies is connected with the auxiliary signal receiving module in the active RF card.
Because active card is low in energy consumption in dormancy, and really need high-current consumption work time comparatively compared with It is few.Therefore, the utility model provides a kind of active RF card with dormancy awakening function, user can independently control active Radio-frequency card carries out dormancy or work, and it greatly extends card service life, efficiently solves manufacturer on active card volume production The difficulty of stock.
Brief description of the drawings
For ease of explanation, the utility model is described in detail by following preferred embodiments and accompanying drawing.
Fig. 1 is logical construction schematic diagram overall in the utility model;
Fig. 2 is the logical construction schematic diagram of auxiliary signal receiving module in the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further described.It should be appreciated that specific embodiment described herein is only to explain this reality With new, it is not used to limit the utility model.
Fig. 1 to Fig. 2 is referred to, the utility model is a kind of active RF card with dormancy awakening function, including:Card It is provided with body, the card body:Power module, auxiliary signal receiving module, low-power consumption active card control module and main signal transmitting-receiving Module;
The main signal transceiver module is communicated by the radiofrequency signal of first frequency with outside radio-frequency apparatus;
Power management module is connected with the power module;S1, S2 and S3 are respectively low-power consumption active card control module With the power switch of main signal transceiver module.Wherein, low-power consumption active card control module needs to monitor low-power consumption active card control The system wake-up signal that module is sent, this partial function circuit needs a direct power supply, referred to as Heng electricity areas;Remainder functional circuit Only just start power consumption, referred to as Fei Heng electricity areas after being waken up.
The auxiliary signal receiving module is used to receive the radiofrequency signal of outside second frequency, and by second The radiofrequency signal of frequency is demodulated into data message;L1 and L2 are respectively the day of second frequency the and auxiliary signal receiving module Line;Auxiliary signal receiving module senses magnetic field energy for the by antenna L2 from second frequency, and Internal reforming is burning voltage, Low-power consumption active card control module is given as system wake-up signal;
The low-power consumption active card control module includes:Heng electricity areas and Fei Heng electricity areas, the Heng electricity areas and power management mould Block is connected, right for monitoring the data message that the auxiliary signal receiving module is demodulated, and after data message is received Received data message is compared with presupposed information, and according to comparative result driving power supply management control Fei Heng electricity areas and The power supply state of main signal transceiver module.
Low-power consumption active card control module in the utility model receives this wake-up signal from auxiliary signal receiving module Afterwards, park mode is departed from, system is waken up;Low-power consumption active card control module the takes the number that auxiliary signal receiving module is stored According to;Low-power consumption active card control module judges whether to need to enter operational mode according to the data taken.If system enters operation Pattern, then switch S2 and S3 closures, the Fei Heng electricity areas of electric power source pair of module low-power consumption active card control module and main signal transmitting-receiving mould Block is powered.
Further, the auxiliary signal receiving module includes:
Amplitude limiter circuit, the amplitude limiter circuit is provided with the antenna for the radiofrequency signal for being used to receive second frequency, and the amplitude limit Circuit is used to be converted to ac signal to the radiofrequency signal of accessed second frequency, and to the voltage amplitude of the ac signal Degree is defined;
Rectification circuit, the rectification circuit is connected with amplitude limiter circuit, for ac signal to be transformed into direct current telecommunications Number;
Mu balanced circuit, the mu balanced circuit is connected with rectification circuit, for carrying out voltage stabilizing to DC signal;
Electrification reset circuit, the electrification reset circuit is connected with the mu balanced circuit, for the direct current after voltage stabilizing The magnitude of voltage of electric signal is judged, if the magnitude of voltage reaches preset value, and reset is sent to low-power consumption active card control module Signal, makes low-power consumption active card control module in running order;
Data demodulation circuit, the data demodulation circuit is connected with the amplitude limiter circuit, for from the ac signal In demodulate data message, and the data message is sent into low-power consumption active card control module;
Clock extracting circuit, the clock extracting circuit is connected with the amplitude limiter circuit, for from the ac signal In extract clock information, and the clock information is sent into low-power consumption active card control module.
The operation principle of auxiliary signal receiving module is in the utility model:The very high exchange letter of amplitude is sensed on antenna Number, in order to prevent internal components to be broken down by high-voltage, amplitude limiter circuit limits the voltage amplitude on antenna by aerial drainage.By amplitude limit it Alternating voltage afterwards becomes DC voltage by rectification circuit.The DC voltage is through mu balanced circuit, and being adjusted in digital circuit can With the scope of work, i.e. VDP for 1.2~2V.VDP is as a more stable DC voltage, when auxiliary signal receiving module Into magnetic field and sense after enough magnetic field energys, VDP is to be increased to set level range.Due to rational energy storage electricity The addition of appearance, VDP is stable in the case where magnetic field intensity is higher than agreement defined threshold.Therefore reach can in setting range by VDP Using as judge auxiliary signal receiving module block enter magnetic field whether condition.
Whether electrification reset circuit monitoring VDP reaches pre-determined stability value.When VDP rises to more than 1V, electrification reset circuit is released Put reset signal.The signal makes the circuit in low-power consumption active card control module break away from reset state, into working condition.
While induced field, auxiliary signal receiving module also obtains data and the clock letter that hair goes out from antenna end Number.Waken up on active card or the information of dormancy is included in the data that hair goes out.Data demodulation circuit and Clock Extraction Aerial signal after processing of circuit amplitude limit, isolates data and clock, and by data information memory in low-power consumption EEPROM.It is low Power consumption control module Zhong Heng electricity areas get these data according to the, judge whether active card enters operational mode.If it is, being System enters operational mode;If it is not, then system enters park mode, the effective letter for waiting auxiliary signal receiving module to receive Number.
Because auxiliary signal receiving module does not need battery supply to power.Only just sense magnetic after 13.56MHz magnetic fields are entered Field intensity works, and will not bring extra power consumption.Data are received and sent by 13.56MHz passive channels, to low-power consumption active The control module of card provides system sleeping/waking signal.Main signal transceiver module is higher in working condition power consumption, but for having The application of source card, it needs the absolute time of work shorter.Itself or dormancy or work are controlled by auxiliary signal receiving module, from And cause in same time span, the overall power of active card reaches lower level, reduces production stock cost.It is right Active card manufacturer is significant.
Further, the first frequency is 2.4GHz, and the second frequency is 13.56MHz.
Further, memory is provided with the low-power consumption active card control module, the memory is used for received Clock information and data message stored, and be preset with presupposed information.
Further, the memory is EEPROM.
A kind of control system of the active RF card with dormancy awakening function of the utility model, including:Second frequency Head, and active RF card as described above;The second frequency hair goes out the radiofrequency signal of second frequency, and by this The radiofrequency signal of two frequencies is connected with the auxiliary signal receiving module in the active RF card.
Enter park mode after the completion of active card of the present utility model production, now only power management module and low work( The Heng electricity areas work of active card control module is consumed, system overall power is very low, is met with the use time for ensureing active battery card It is required that.Until when needing shipment, the magnetic field intensity sensed is converted into electric energy by auxiliary signal receiving module, receives second frequency the The wake-up signal that hair is sent, data and interrupt signal.Low-power consumption active card control module is received after interruption, and takes in EEPROM Data simultaneously parse data, judge whether system enters operational mode.System enters after operational mode, low-power consumption active control molding The Fei Heng electricity areas of block and main signal transceiver module are just started working, and most power consumptions of system are all consumed herein.So can To accomplish that high-volume is got ready the goods, delivery cycle is not influenceed.This is also the important realistic meaning of this method.
During user's use, if having longer period of time without using active card, second frequency hair can be used to send Sleep command, makes card enter resting state.When needing to be continuing with, active card is waken up, operational mode is made it into and works on. The unnecessary power consumption penalty of active card can be so reduced, so as to effectively extend the service life of active card.
Low frequency (125KHz, 134.2KHz), high frequency (13.56MHz), hyperfrequency are generally divided into according to the difference of working frequency (860MHz-960MHz) and microwave frequency band (2.45GHz, 5.8GHz).The characteristics of low frequency and radio frequency system is that distance of reaction is short, sense Answer antenna directivity not strong.Communication speed is also slower.System realizes energy transmission and data exchange using inductive coupling principles, main It is used for short distance, the application of low cost.Hyperfrequency, the system of microwave frequency band enter line number using electromagnetism back scattering coupling principle According to exchange, induced field is distant, up to more than ten meters.Objects at high speed motion is adapted to, antenna has stronger directionality.This practicality New selection 13.56MHz carrier frequencies, are determined by the application scenarios of the active card.
The wake-up and dormancy of active card are realized, auxiliary signal receiving module has served very important.Auxiliary signal Receiving module does not need power supply to power, and directly obtains magnetic field energy from 13.56MHz passive channels;Data and clock also directly from 13.56MHz passive channels are obtained, within 1 meter of distance of reaction.The circuit realiration of auxiliary signal receiving module follows I SO14443- A agreements, by amplitude limiter circuit, rectification circuit, mu balanced circuit, data modem circuitry, clock extracting circuit and electrification reset electricity Road is constituted, because 13.56MHz asks technique less high, and process choice, circuit realiration are relatively easy, can also be reduced in cost.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (6)

1. a kind of active RF card with dormancy awakening function, it is characterised in that including:It is provided with card body, the card body:Electricity Source module, auxiliary signal receiving module, low-power consumption active card control module and main signal transceiver module;
The main signal transceiver module is communicated by the radiofrequency signal of first frequency with outside radio-frequency apparatus;
Power management module is connected with the power module;
The auxiliary signal receiving module is used to receive the radiofrequency signal of outside second frequency, and by second frequency Radiofrequency signal be demodulated into data message;
The low-power consumption active card control module includes:Heng electricity areas and Fei Heng electricity areas, the Heng electricity areas connect with power management module Connect, for monitoring the data message that the auxiliary signal receiving module is demodulated, and after data message is received, to being connect The data message received is compared with presupposed information, and according to comparative result driving power supply management control Fei Heng electricity areas and main letter The power supply state of number transceiver module.
2. the active RF card according to claim 1 with dormancy awakening function, it is characterised in that the auxiliary signal Receiving module includes:
Amplitude limiter circuit, the amplitude limiter circuit is provided with the antenna for the radiofrequency signal for being used to receive second frequency, and the amplitude limiter circuit Ac signal is converted to for the radiofrequency signal to accessed second frequency, and the voltage amplitude of the ac signal is entered Row is limited;
Rectification circuit, the rectification circuit is connected with amplitude limiter circuit, for ac signal to be transformed into DC signal;
Mu balanced circuit, the mu balanced circuit is connected with rectification circuit, for carrying out voltage stabilizing to DC signal;
Electrification reset circuit, the electrification reset circuit is connected with the mu balanced circuit, for the direct current telecommunications after voltage stabilizing Number magnitude of voltage judged, if the magnitude of voltage reaches preset value, reset signal is sent to low-power consumption active card control module, Make low-power consumption active card control module in running order;
Data demodulation circuit, the data demodulation circuit is connected with the amplitude limiter circuit, for being solved from the ac signal Data message is recalled, and the data message is sent into low-power consumption active card control module;
Clock extracting circuit, the clock extracting circuit is connected with the amplitude limiter circuit, for being carried from the ac signal Clock information is taken out, and the clock information is sent into low-power consumption active card control module.
3. the active RF card according to claim 2 with dormancy awakening function, it is characterised in that the first frequency For 2.4GHz, the second frequency is 13.56MHz.
4. the active RF card according to claim 3 with dormancy awakening function, it is characterised in that the low-power consumption has Memory is provided with the card control module of source, the memory is used to deposit received clock information and data message Storage, and it is preset with presupposed information.
5. the active RF card according to claim 4 with dormancy awakening function, it is characterised in that the memory is EEPROM。
6. a kind of control system of the active RF card with dormancy awakening function, it is characterised in that including:Second frequency Head, and the active RF card as described in claim 1 to 5 any one;The second frequency hair goes out second frequency Radiofrequency signal, and radiofrequency signal by the second frequency is connected with the auxiliary signal receiving module in the active RF card Connect.
CN201720082691.3U 2017-01-20 2017-01-20 A kind of active RF card and its system with dormancy awakening function Active CN206532318U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108120939A (en) * 2017-12-23 2018-06-05 武汉瑞纳捷电子技术有限公司 A kind of active card battery power amount calculation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108120939A (en) * 2017-12-23 2018-06-05 武汉瑞纳捷电子技术有限公司 A kind of active card battery power amount calculation method
CN108120939B (en) * 2017-12-23 2020-04-10 武汉瑞纳捷电子技术有限公司 Method for calculating electric quantity of battery of active card

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Address after: 430000 building 01, building 15, optical valley wisdom Park, No.7, financial port 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province

Patentee after: Wuhan ruinajie Semiconductor Co.,Ltd.

Address before: 430073, Hubei, East Lake province Wuhan New Technology Development Zone Finance port No. 7, No. 15, Optics Valley wisdom garden, No. 01 building

Patentee before: WUHAN RUINAJIE ELECTRONIC TECHNOLOGY Co.,Ltd.