CN101149817A - Non-contact infrared IC card - Google Patents
Non-contact infrared IC card Download PDFInfo
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- CN101149817A CN101149817A CNA2006101594144A CN200610159414A CN101149817A CN 101149817 A CN101149817 A CN 101149817A CN A2006101594144 A CNA2006101594144 A CN A2006101594144A CN 200610159414 A CN200610159414 A CN 200610159414A CN 101149817 A CN101149817 A CN 101149817A
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Abstract
This invention provides a kind of non-contact infrared IC card supplied by light battery, which comply with the IrDA communication protocol to exchange information, non-contact obtains working power supply of internal integrated circuit from environment or light of the reader. Embed photoelectric cell,in energy storage capacitor and integrated circuit, the photoelectric cell convert environment energy of light into electric energy and stored in the storage capacitor and provide to the use of integrated circuits; the integrated circuits mainly composed by the commutation diodes, power monitor, digital signal processor, infrared transceiver photocell, the input end of commutation diode connects the positive pole of light battery, the positive pole of energy storage capacitor connects output end of commutation diode, the output end of commutation diode was linked with input end of power monitor, the output end of power monitor connects the power end of digital signal processor, the infrared transceiver photocell connects the transceiver ends of power monitor. The infrared IC cards are mainly used in personal identification, information storage and switch and so on.
Description
Technical field
The present invention relates to a kind of is the contactless IC card of communication media with the infrared light, particularly a kind ofly uses up battery powered non-contact infrared IC card.Be mainly used in identification, information stores exchange etc.
Background technology
At present, along with the development of infotech, the information stores switching card at industry applications such as finance, public transport, pre-payment instruments more and more widely, " swiping the card " becomes a part indispensable in people's daily life gradually.
The information stores switching card has experienced magnetic card (ISO7810), contact IC-card (ISO7816), noncontact radio-frequency (RF) IC card (ISO14443) three generations's development.It is the interference that is subject to magnetic field owing to magnetic card that the contact IC-card is eliminated magnetic card, and the time of preservation information is not long, and the noncontact radio-frequency (RF) IC card is eliminated the contact IC-card because contact the contact that need be connected with external mechanical when IC-card is read and write, and durability is not enough.
The noncontact radio-frequency (RF) IC card began one's study, uses from 1999, and it mainly is to be that medium is powered and exchange message by the electromagnetic induction principle integrated circuit noncontact mode in the card of giving with the radio.Though solved durability issues by electromagnetic induction noncontact exchange message mode, but the aerial coil that is used for electromagnetic induction has brought such problem: along with electromagnetic intensity changes, can cause the communication quality deterioration as passing through of mentioning of Chinese patent 200410056786.5,03109226.8 power supply that aerial coil provides.Though these two patents propose voltage stabilizings and two kinds of schemes of shunt solve this problem, all be based on regular service conditions and get off to realize.If card is brought in the strong-electromagnetic field accidentally, then Gan Ying voltage just might damage card above the scope of voltage stabilizing and voltage divider adjustment and go up integrated circuit.In addition, the contactless IC card read/write device can may crash when aerial coil is introduced the coil-induced thunder and lightning of instrument and meter internal antenna with pre paid functionality of fatal strong electromagnetic wave, particularly all weather operations, strong electromagnetic wave such as artificial equally, damage even out of control and cause heavy economic losses.
Summary of the invention
Be subject to the problem that strong electromagnetic wave disturbs, destroys in order to overcome above-mentioned noncontact radio-frequency (RF) IC card and read write line thereof, the invention provides a kind of battery powered non-contact infrared IC card of using up, infrared IC card is deferred to IrDA communications protocol exchange message, obtains the internal integrated circuit working power from the light emitting source noncontact of environment or read write line.
The technical solution adopted for the present invention to solve the technical problems is: at the embedded photoelectric cell of card, storage capacitor and integrated circuit, photoelectric cell converts ambient light energy to electrical power storage at storage capacitor and offer integrated circuit and use; Wherein integrated circuit mainly is made of commutation diode, power supply monitor, digital signal processor, infrared receiving/transmission photoelectric tube, the photronic positive pole of input termination of commutation diode, the positive pole of storage capacitor connects the output terminal of commutation diode, the output terminal of commutation diode connects the input end of power supply monitor, the power end of the output terminal linking number word signal processor of power supply monitor, the transmitting-receiving port of infrared receiving/transmission photoelectric tube linking number word signal processor.
Non-contact infrared IC card principle of work provided by the invention is: the power supply of all electron devices all is to be provided by photoelectric cell in the infrared IC card, and photoelectric cell can be a plastic sheeting base photoelectric cell, also can be the glass-based photoelectric cell.Photoelectric cell is at infrared IC card that design provides voltage 2.5V in the indoor environment of 2001x, also is that photoelectric cell is made up of 5 trifles.By photoelectric cell have every trifle voltage minimum for 0.5V the highest 0.7V characteristic as can be known, ambient light intensity greater than the photoelectric cell saturation point after voltage be stabilized in 3.5V, therefore do not need mu balanced circuit, also can not damage electron device in the card because of superpower light cause high pressure.The size of light intensity influences photronic output current, can initiatively light the luminous compensation of light emitting source by the infrared IC card read write line at the environment that is lower than 2001x, photoelectric cell can be installed in the infrared IC card two sides, also promptly increase a compensation photoelectric cell and accept the compensation light that the light emitting source of read write line sends, compensating photronic output also charges to storage capacitor through commutation diode, other electron device power supplys are provided simultaneously, commutation diode prevents that mainly the electricity of storage capacitor from can not pour in down a chimney to photoelectric cell, the effect of storage capacitor is with store energy, so that energy shortage when replenishing the big infrared receiving/transmission photoelectric tube work of power consumption before read-write operation; Power supply supervisory circuit mainly is whether can monitoring power supply make digital signal processor operate as normal and digital signal processor crash: if the power supply abundance is opened the power supply of digital signal processor and made it to be in the reception holding state.The digital signal processor that then resets restarts if digital signal processor crashes in the course of the work; The main task of digital signal processor is the access of Communication Control and data, according to IrDA communications protocol and infrared IC card read write line exchange message; By DSP CONTROL work whether the infrared receiving/transmission photoelectric tube is, and the digital signal of digital signal processor is converted to the infrared light pulse signal.
The invention has the beneficial effects as follows: give electron device power supply in the infrared IC card with photoelectric cell, avoided the interference of superpower light, avoided the interference and the damage of radio magnetic wave.Adopt the IrDA communications protocol, have the following advantages: the message transmission rate height, access time is short; The infrared angle is less, and the security in the certain physical transmission is arranged; The read-write operation distance is greater than radio-frequency (RF) IC card; The read write line cost is low, highly versatile; High light, forceful electric power have been avoided with the pre-payment instrument of infrared IC card, strong magnetic, the interference of strong electromagnetic wave, destruction, reliability height.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a schematic block circuit diagram of the present invention.
Fig. 2 is a power supply monitor principle schematic of the present invention.
Fig. 3 is the Facad structure synoptic diagram of embodiments of the invention one.
Fig. 4 is the structure synoptic diagram of embodiments of the invention one.
Fig. 5 is the Facad structure synoptic diagram of embodiments of the invention two.
Among the figure 1, photoelectric cell, 2, storage capacitor, 3, commutation diode, 4, power supply monitor, 5, digital signal processor, 6, the infrared receiving/transmission photoelectric tube, 7, integrated circuit, 8, the infrared light transmission window, 9, the infrared IC card sheet, 10, the compensation photoelectric cell.41, voltage comparator, 42, house dog, 43, voltage reference source, 44, power switch.
Embodiment
Photoelectric cell among Fig. 1 (1) is given storage capacitor (2) charging by commutation diode (3), opens digital signal processor (5) power supply but charging reaches the setting reference voltage of power supply monitor (4); Digital signal processor (5) is in the reception data mode and is in holding state after finishing initial work.When crashing appears in digital signal processor (5) in the course of the work, then power supply monitor (4) forces digital signal processor (5) to restart with the mode of the deenergization digital signal processor (5) that resets.When receiving the contact order that the infrared IC card read write line sends by infrared receiving/transmission photoelectric tube (6) after, digital signal processor (5) just carries out exchange message with it.
Power supply monitor among Fig. 2 (4) is mainly by voltage comparator (41), house dog (42), voltage reference source (43), power switch (44) is formed, the in-phase end of voltage comparator (41) connects the output terminal of commutation diode (3), the end of oppisite phase of voltage comparator (41) connects the positive pole of voltage reference source (43), the output terminal of voltage comparator (41) connects the grid of power switch (44) field effect transistor, the output terminal of house dog (42) also connects the grid of power switch (44) field effect transistor, the source electrode of power switch (44) field effect transistor connects the public ground of power supply monitor (4), the negative pole of drain electrode linking number word signal processor (5) power supply of power switch (44) field effect transistor.Its principle of work is: when the voltage of commutation diode (3) output terminal reaches the setting voltage 2.5V of voltage reference source (43), voltage comparator (41) output high level makes power switch (44) field effect transistor conducting, and digital signal processor (5) power supply is just connected; When digital signal processor (5) is not in operation not house dog (42) the setting-up time house dog (42) of resetting in 0.5 second, then house dog (42) output low level makes power switch (44) field effect transistor by 0.2 millisecond, digital signal processor (5) power supply just disconnects 0.2 millisecond, thereby causes digital signal processor (5) to reset.
Among Fig. 2, the storage capacitor (2) of the positive installed inside of the embodiment of the invention one infrared IC card sheet and integrated circuit (7), infrared receiving/transmission photoelectric tube (6) on the integrated circuit (7) is in the below of infrared light transmission window (8), and infrared light transmission window (8) is concordant with infrared IC card sheet surface.
Among Fig. 3,5 trifle photoelectric cells of the back side installed inside of the embodiment of the invention one infrared IC card sheet, the backside surface of infrared IC card sheet is answered printing opacity.
Among Fig. 4, the front of the embodiment of the invention two infrared IC card sheets increases a compensation photoelectric cell (10) on the basis of embodiment one, so that when ambient light is not enough, the infrared IC card read write line initiatively sends white light and gives compensation photoelectric cell (10), compensation photoelectric cell (10) to storage capacitor charging (2), increases power by a commutation diode (3).
Claims (5)
1. use up battery powered non-contact infrared IC card for one kind, at the embedded photoelectric cell of card, storage capacitor and integrated circuit, it is characterized in that: photoelectric cell converts ambient light energy to electrical power storage at storage capacitor and offer integrated circuit and use.
2. non-contact infrared IC card according to claim 1, it is characterized in that: the embedded integrated circuit of card mainly is made of commutation diode, power supply monitor, digital signal processor, infrared receiving/transmission photoelectric tube, the photronic positive pole of input termination of commutation diode, the positive pole of storage capacitor connects the output terminal of commutation diode, the output terminal of commutation diode connects the input end of power supply monitor, the power end of the output terminal linking number word signal processor of power supply monitor, the transmitting-receiving port of infrared receiving/transmission photoelectric tube linking number word signal processor.
3. according to claim 1 and 2 described non-contact infrared IC cards, it is characterized in that: the power supply monitor of the IC interior that card is embedded is mainly by voltage comparator (41), house dog (42), voltage reference source (43), power switch (44) is formed, the in-phase end of voltage comparator (41) connects the output terminal of commutation diode, the end of oppisite phase of voltage comparator (41) connects the positive pole of voltage reference source (43), the output terminal of voltage comparator (41) connects the grid of power switch (44) field effect transistor, the output terminal of house dog (42) also connects the grid of power switch (44) field effect transistor, the source electrode of power switch (44) field effect transistor connects the public ground of power supply monitor (4), the negative pole of drain electrode linking number word signal processor (5) power supply of power switch (44) field effect transistor.
4. non-contact infrared IC card according to claim 1 is characterized in that: photoelectric cell can be a plastic sheeting base photoelectric cell, also can be the glass-based photoelectric cell.
5. according to claim 1 and 4 described non-contact infrared IC cards, it is characterized in that: photoelectric cell can be installed in the non-contact infrared IC card two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101594144A CN101149817A (en) | 2006-09-18 | 2006-09-18 | Non-contact infrared IC card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101594144A CN101149817A (en) | 2006-09-18 | 2006-09-18 | Non-contact infrared IC card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101149817A true CN101149817A (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101594144A Pending CN101149817A (en) | 2006-09-18 | 2006-09-18 | Non-contact infrared IC card |
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| Country | Link |
|---|---|
| CN (1) | CN101149817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142132A1 (en) * | 2009-06-12 | 2010-12-16 | 北京海升天达科技有限公司 | Smart card capable of being used for infrared communication |
| CN101957926A (en) * | 2010-09-09 | 2011-01-26 | 扬州恒信仪表有限公司 | Radio-frequency card reading and writing circuit controlled and formed by MCU supporting nanoWatt technology |
| CN111967283A (en) * | 2020-09-17 | 2020-11-20 | 深圳市银通商智能卡有限公司 | Method and system for transmitting application data of IC card |
-
2006
- 2006-09-18 CN CNA2006101594144A patent/CN101149817A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142132A1 (en) * | 2009-06-12 | 2010-12-16 | 北京海升天达科技有限公司 | Smart card capable of being used for infrared communication |
| CN101957926A (en) * | 2010-09-09 | 2011-01-26 | 扬州恒信仪表有限公司 | Radio-frequency card reading and writing circuit controlled and formed by MCU supporting nanoWatt technology |
| CN111967283A (en) * | 2020-09-17 | 2020-11-20 | 深圳市银通商智能卡有限公司 | Method and system for transmitting application data of IC card |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20080326 |