CN1256657C - Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system - Google Patents
Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system Download PDFInfo
- Publication number
- CN1256657C CN1256657C CN 200410013995 CN200410013995A CN1256657C CN 1256657 C CN1256657 C CN 1256657C CN 200410013995 CN200410013995 CN 200410013995 CN 200410013995 A CN200410013995 A CN 200410013995A CN 1256657 C CN1256657 C CN 1256657C
- Authority
- CN
- China
- Prior art keywords
- infrared
- card
- work
- receiving module
- dormancy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a low energy consumption work mode of an intelligent identity card in a vehicle management infrared recognition system. The low energy consumption work mode is characterized in that firstly, a CPU arranged in an infrared identity card adopts a low-frequency continuous working mode, the working frequency of the CPU is below 1 MHZ and higher than the minimum working frequency of the CPU; secondarily, an infrared receiving module in the infrared identity card adopts an intermittent working mode of work-> dormancy-> work-> dormancy-> work-> dormancy after initialization; the conditions as follows are met: (1) C<=A<=2C, in the formula, A indicates the effective time of query signals sent out by a card reader, and C indicates the intermittent period time of the infrared receiving module of the infrared identity card; (2) in each intermittent period, the duty ratio of B to D is 1: 1-100, wherein B indicates the working pulse effective time of the infrared receiving module of the infrared identity card in each intermittent period, and D indicates that the dormancy time of the infrared receiving module of the infrared identity card in each intermittent period. By the low power consumption working mode, the service life of a button cell in the infrared identity card is extended by three to nine times in comparison with the original service life; besides, the normal operation is not influenced, and the low power consumption working mode is not easily perceived by a user.
Description
Technical field
The present invention relates to the infrared recognition systems of the employed vehicle management in parking lot such as parking lot, motorbus storehouse, a kind of low energy consumption method of work of the Radio infrared smart card that particularly uses in this system, be used to represent identity of automobile.
Background technology
Along with people's living standard improves, increasing people has private car, and the problem of parking difficulty becomes increasingly conspicuous, although government and relevant department have adopted some active measures, this problem seems and the end is solved well.From present trend, greatly develop the communal automobile storehouse, come the contradiction of stopping at release difficulty by increasing public parking stall, be a kind of effective way that tallies with the national condition.
But at present labor management is all adopted in China most of communal automobiles storehouse and parking lot, and this way to manage had both bothered and falls behind, and exposed many disadvantages in the practice.In order to address this problem, in recent years, the parking stall electronic management system in parking lot and motorbus storehouse has appearred being applicable to.This management system generally is made up of several parts such as identification, accounting managements, and identification is divided into contact and swipes the card and contactlessly swipe the card two kinds.Contact is swiped the card, and such as magnetic card, is to utilize the mode of contact read-write magnetic card to discern identity of automobile, carries out toll administration; Contactless swiping the card such as ID card, IC-card, is to utilize wireless transmit and receive mode to discern identity of automobile, carries out toll administration.
For magnetic card and since read-write during magnetic card magnetic head and card go up magnetic stripe and partly need closely to contact and rub, the mechanical part of magnetic card read write line need move back and forth, it is very big to add in the parking site surrounding dust, so serviceable life and reliability all have problems.At home, this mode is withdrawn from the market gradually.
The substitute is ID card or IC-card.This class identification mode has the branch of low frequency, high frequency, and identification range also has closely the branch of (several centimeters) and remote (several meters to tens meters).But, owing to adopted direction-free non-contact type wireless transmit and receive mode, also can produce problem on the other hand in two-way traffic (one-in-and-one-out) or bicycle road (passing in and out a shared track) parking lot management, promptly two card reader interact when work, take place easily to disturb and mistake.The possessor adopts the mode that increases the triggering Card Reader to solve this problem (promptly when a trigger detects vehicle, just allowing card reader carry out Card Reader) in this system to the greatest extent, but can only remedy the part inadequate natural endowment of system, and can not tackle the problem at its root.
At above problem, Radio infrared has appearred, directed technology solves the problem that the vehicle body is not discerned.This recognition method is the other card reader (being recognizer) that is provided with respectively in the track, gateway in parking lot, infrared ID (identity number) card is positioned in the car, when vehicle carries infrared ID (identity number) card when sailing into or rolling away from, transmit and receive mode with corresponding card reader by Radio infrared and set up and get in touch, read the identification code of this ID (identity number) card.Because infrared ID (identity number) card has write unique identification code before dispatching from the factory, when vehicle sails in effective identification range of card reader, identification code on the auto-recognition card, and identification code is delivered to control system (as the parking lot controller) in Weigand (Wei root) mode of standard, control system will be according to the validity of this identification code, vehicle is made the judgement that allows or do not allow to pass in and out, realize management affairs such as car stowages.
More than in the infrared recognition system, card reader comprises controller (CPU), infrared receiving module and infrared transmitting tube, adopts external power supply work; Infrared ID (identity number) card comprises controller (CPU), infrared receiving module, infrared transmitting tube and button cell.In the prior art, card reader constantly sends request signal by infrared transmitting tube for searching target, and its infrared receiving module then is in accepting state always; ID (identity number) card supports the time then to adopt power-saving working mode in order to prolong button cell, promptly the infrared receiving module in the card is in running order always, and be in sleep state under the CPU general case in the card, rely on the request signal of card reader emission that it is waken up, the identification code of waking a string card of back transmission up enters sleep state again then to card reader.
Above traditional battery saving mode, because the CPU most of the time is in sleep state, saved the part electric energy, obtained certain effect, but the infrared receiving module in the card is in running order always, and the power consumption that facts have proved this part is still bigger, under normal continuous working situation, the working time of three joint button cells can only be supported about 20～60 days, promptly will change battery about average one or two month, such battery altering cycle is all too frequent from use and management view, and operating cost is big, be unfavorable for environmental protection, its reason is that battery saving mode does not in the past solve the problem of identification card low energy consumption well.
In view of this, the present invention proposes a kind of parking stall that is applicable to and manages in the infrared recognition system, the low energy consumption method of work that the smart identity card is new, and its purpose is to prolong the serviceable life of battery in the card, reduces the replacing frequency of battery.
Summary of the invention
For achieving the above object, the technical solution used in the present invention is: smart identity card low energy consumption method of work in the infrared recognition system of a kind of vehicle management is characterized in that:
(1), the CPU in the infrared ID (identity number) card adopts low frequency, continuously-running duty, its frequency of operation is below 1 megahertz, more than the CPU lowest operating frequency;
(2), the infrared receiving module in the infrared ID (identity number) card adopts the intermittent duty of " work → dormancy → work → dormancy → work → dormancy ", and satisfies following condition after initialization:
1., C≤A≤2C, in the formula:
A represents the request signal effective time that card reader sends;
C represents time resting period that ID (identity number) card infrared receiving module work and dormancy are constituted;
2., in each resting period, the dutycycle of B and D is 1: 1～100, wherein:
B represents the working pulse effective time of ID (identity number) card infrared receiving module in each resting period;
D represents the dormancy time of ID (identity number) card infrared receiving module in each resting period.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described " CPU adopt low frequency, continuously-running duty " its implication: the one, CPU (processor that refers to single-chip microcomputer) uses the low frequency clock as far as possible, like this can power saving, and do not influence operate as normal again; The 2nd, the CPU continuous working, promptly in running order always.The work of so-called CPU low frequency is meant clock frequency below 1 megahertz, and more than the minimum clock frequency that CPU can bear.Minimum clock frequency is different for each CPU, generally provides in the CPU technical manual.Generally the upper limit clock frequency of CPU is in the majority in 4～20 megahertz range in the single-chip microcomputer.
2, in the such scheme, so-called " intermittent duty " is meant that infrared receiving circuit carries out work with the pattern of " work → dormancy → work → dormancy → work → dormancy ", and wherein infrared receiving circuit does not have power consumption under dormant state.The described resting period is meant the minimal circulation cycle that work and dormancy are formed.
3, in the such scheme, referring to accompanying drawing 2, request signal A effective period that described resting period C≤card reader sends is the rapid reliability of getting in touch with between infrared ID (identity number) card of coverage scope and card reader in order to guarantee.
4, in the such scheme, have better power savings in order to make infrared receiving module, infrared receiving module work and dormancy time duty cycle limit are fixed on 1: 2～50 scopes in.Dutycycle is the best with 1: 8～10 in this scope.
5, in the such scheme, in order to reach the power saving purpose, save a crystal oscillator simultaneously, can consider in infrared ID (identity number) card, CPU and infrared emission circuit are share a low frequency clock, its frequency of operation is controlled between 30～455 kilo hertzs.The oscillation frequency that existing infrared receiving module adopts usually is 30,32,36,36.7,38,40,56,455 kilo hertzs etc.
6, in the such scheme, in the described infrared receiving module, working pulse is controlled in 1 second effective time, and wherein, working pulse is better between 0.2～50 millisecond effective time, and is best between 0.6～6.6 millisecond.
Characteristics of the present invention are: the CPU in the infrared ID (identity number) card in the vehicle is designed to low frequency, continuous operation mode, simultaneously infrared receiving module is designed to the discontinuous operation pattern.Because this is controlled low power mode of operation reasonably, the mission life of the button cell in the card is prolonged greatly, and card reader cooperates with the reasonable of infrared ID (identity number) card, make this intermittent duty be difficult for being discovered by the user, that is to say, therefore the user in use can not feel system in work or delay is arranged, and this mode of operation can be by practice, and has good power saving effect.
Groundwork process of the present invention is: infrared ID (identity number) card is positioned in the vehicle, when vehicle sails the effective Card Reader of card reader distance into when interior, infrared ID (identity number) card receives the request signal that card reader is sent, and foundation " shaking hands " relation, make system identification arrive this infrared ID (identity number) card, follow infrared ID (identity number) card and launch the accidental enciphering infrared signal by radiating circuit, card reader identifies identification code from this signal, and this identification code outputed to management system with the standard Wigand mode of setting, send sound and light signal simultaneously and tell the user.
Because the technique scheme utilization, the present invention compared with prior art has following effect:
1, the present invention has tangible power saving effect.Adopt traditional in the past power-saving working mode, under normal continuously-running duty, the working time of three joint button cells can only be supported about 20～60 days, be to change about one or two month, otherwise can't guarantee the operate as normal of ID (identity number) card, and adopt to extend to more than 180 days the serviceable lifes of three identical after the power-saving working mode of the present invention joint button cells.The present invention is compared with the prior art as follows:
| Clock frequency | Operating voltage | Power consumption | |
| The existing in the past low power mode of operation of low power mode of operation of the present invention | 32.768 kilo hertz 4 megahertzes | 3V 3V | 15 microamperes 2 milliamperes |
2, the present invention can save a crystal oscillator after the CPU in the infrared ID (identity number) card and infrared emission circuit are share a low frequency clock, so not only simplifies the structure but also has reduced cost.
3, the present invention can be used in all management systems that need discern testing vehicle register, it has overcome the problem in two-way traffic (one-in-and-one-out) or bicycle road (passing in and out a shared track) management that common wireless transmit and receive mode cause owing to Card Reader is non-directional, and kept long characteristic (Card Reader distance can reach 5～10 meters) apart from Card Reader, and (card is placed in the vehicle and can uses behind the front window, need not debug) easy to install.
Description of drawings
Accompanying drawing 1 is the composition and the theory diagram of infrared intelligent ID (identity number) card of the present invention and card reader (recognizer).
Accompanying drawing 2 is receiver module pulse synoptic diagram in card reader request signal of the present invention pulse and the infrared ID (identity number) card, among the figure: the request signal effective time that A, card reader send; B, ID (identity number) card infrared receiving module working pulse effective time; Time resting period that C, ID (identity number) card infrared receiving module work and dormancy are constituted; D, the dormancy time of ID (identity number) card infrared receiving module in each resting period.
Accompanying drawing 3 is card reader workflow of the present invention.
Accompanying drawing 4 is smart identity card workflow of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: shown in accompanying drawing 1, the theory diagram of infrared recognition device in a kind of vehicle management system, wherein, card reader is made up of CPU (controller or single-chip microcomputer), infrared emission circuit, infrared receiving module.This card reader fixedly is located at by the track, gateway in parking lot, and by interface circuit be connected with management system, its workflow is seen shown in the accompanying drawing 3.Infrared ID (identity number) card is a kind of intelligent identification card, form by CPU (controller or single-chip microcomputer), infrared emission circuit, infrared receiving module, integral body is made a kind of and the product credit card appearance similar, but thickness is 10 times of credit card, and its workflow is seen shown in the accompanying drawing 4.Infrared ID (identity number) card is placed in Che Nei or carries with vehicle.In order to reach purpose of power saving, this smart identity card adopts new low energy consumption method of work, and its content is:
(1), the CPU in the infrared ID (identity number) card adopts low frequency, continuously-running duty, and CPU and infrared emission circuit share a low frequency clock, its frequency of operation is at 38 kilo hertzs.
(2), the infrared receiving module in the infrared ID (identity number) card adopts the intermittent duty of " work → dormancy → work → dormancy → work → dormancy ", and satisfies following condition after initialization:
1., referring to shown in Figure 2, C≤A≤2C, in the formula:
A represents the request signal effective time that card reader sends;
C represents time resting period that ID (identity number) card infrared receiving module work and dormancy are constituted;
2., in each resting period, the dutycycle of B and D is 1: 8, wherein:
B represents the working pulse effective time of ID (identity number) card infrared receiving module in each resting period to be 0.6～6.6 millisecond;
D represents the dormancy time of ID (identity number) card infrared receiving module in each resting period.
Claims (7)
1, smart identity card low energy consumption method of work in the infrared recognition system of a kind of vehicle management is characterized in that:
(1), the CPU in the infrared ID (identity number) card adopts low frequency, continuously-running duty, its frequency of operation is below 1 megahertz, more than the CPU lowest operating frequency;
(2), the infrared receiving module in the infrared ID (identity number) card adopts the intermittent duty of " work → dormancy → work → dormancy → work → dormancy ", and satisfies following condition after initialization:
1., C≤A≤2C, in the formula:
A represents the request signal effective time that card reader sends;
C represents time resting period that ID (identity number) card infrared receiving module work and dormancy are constituted;
2., in each resting period, the dutycycle of B and D is 1: 1～100, wherein:
B represents the working pulse effective time of ID (identity number) card infrared receiving module in each resting period;
D represents the dormancy time of ID (identity number) card infrared receiving module in each resting period.
2, low energy consumption method of work according to claim 1 is characterized in that: described infrared receiving module work and dormancy time dutycycle are 1: 2～50.
3, low energy consumption method of work according to claim 2 is characterized in that: described infrared receiving module work and dormancy time dutycycle are 1: 8～10.
4, low energy consumption method of work according to claim 1 is characterized in that: in the described infrared ID (identity number) card, CPU and infrared emission circuit share a low frequency clock, and its frequency of operation is between 30～455 kilo hertzs.
5, low energy consumption method of work according to claim 1 is characterized in that: in the described infrared receiving module, working pulse effective time is in 1 second.
6, low energy consumption method of work according to claim 5 is characterized in that: in the described infrared receiving module, working pulse effective time is 0.2～50 millisecond.
7, low energy consumption method of work according to claim 6 is characterized in that: in the described infrared receiving module, working pulse effective time is 0.6～6.6 millisecond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013995 CN1256657C (en) | 2004-02-02 | 2004-02-02 | Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013995 CN1256657C (en) | 2004-02-02 | 2004-02-02 | Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1558365A CN1558365A (en) | 2004-12-29 |
| CN1256657C true CN1256657C (en) | 2006-05-17 |
Family
ID=34351229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410013995 Expired - Fee Related CN1256657C (en) | 2004-02-02 | 2004-02-02 | Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1256657C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370470C (en) * | 2006-07-10 | 2008-02-20 | 胡淼龙 | Ultra-long distance microwave electronic marking system |
| CN105303872B (en) * | 2015-08-28 | 2019-03-01 | 安徽科创生产力促进中心有限责任公司 | Stopping charging system |
| CN108560447B (en) * | 2018-05-04 | 2019-10-08 | 吴建 | A kind of shared berth lock of low energy consumption |
| CN113341812A (en) * | 2021-06-11 | 2021-09-03 | 深圳风角智能科技有限公司 | Environment-friendly electric storage type energy consumption and power saving management system and method for terminal of Internet of things |
-
2004
- 2004-02-02 CN CN 200410013995 patent/CN1256657C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1558365A (en) | 2004-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101441706B (en) | Double-activating method of active electronic label | |
| US20140105089A1 (en) | Power management system and method for vehicle locating unit | |
| CN101507240B (en) | A vehicle locating unit with improved power management method | |
| CN101051356A (en) | Novel active radio frequency identifying system and its operationn method | |
| CN104063928B (en) | High-frequency antenna feature discrimination-based smart lock system | |
| CN101458830B (en) | Intelligent electric power management implementation device for vehicle-mounted unit of non-stop toll collecting system | |
| CN102184445B (en) | Electronic tag awakening method and electronic tag | |
| CN204496592U (en) | A kind of smart lock with power saving management function | |
| CN1256657C (en) | Low energy consumption work module of intelligent identity card in vehicle management infrared recognition system | |
| CN201111117Y (en) | Anti-dissembling vehicle electronic label | |
| CN201576296U (en) | Active solar RFID tag | |
| CN103377391A (en) | Radio frequency identification, communication system and method having fixed-point communication function | |
| CN201725376U (en) | Wireless wake-up type active student label recognition system | |
| CN218929416U (en) | Automobile back door opening system | |
| CN102117420A (en) | Frequency mixing active reading and writing tag | |
| US20030014676A1 (en) | Method of remote start of wireless transmission USB | |
| CN205503187U (en) | Low -power consumption personnel in pit locator card | |
| CN201222262Y (en) | Novel multi-frequency band multifunctional electronic label | |
| CN100585625C (en) | A kind of vehicle carried device that is used for long distance vehicle recognition system | |
| CN103310607B (en) | A kind of radio frequency teleautomatics based on satnav and remote control thereof | |
| CN110544330A (en) | intelligent lock and ultra-low power consumption RF module transceiving method for intelligent lock | |
| CN209859300U (en) | Intelligent parking lot capable of achieving rapid and convenient parking | |
| CN217008228U (en) | Solar energy sharing bicycle electronic tags | |
| CN217088159U (en) | Take 4G module low-power consumption sensor control collection system | |
| CN205172202U (en) | Low -power intelligence lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |