CN204759434U - Radio -frequency card read card circuit and card system and radio frequency access control system are read to radio -frequency card - Google Patents
Radio -frequency card read card circuit and card system and radio frequency access control system are read to radio -frequency card Download PDFInfo
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- CN204759434U CN204759434U CN201520362763.0U CN201520362763U CN204759434U CN 204759434 U CN204759434 U CN 204759434U CN 201520362763 U CN201520362763 U CN 201520362763U CN 204759434 U CN204759434 U CN 204759434U
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Abstract
The utility model relates to the field of communication, card system and radio frequency access control system are read to read card circuit and the radio frequency that specifically indicate a radio -frequency card, the utility model discloses the card circuit of reading of radio -frequency card includes that contact circuit, antenna module, radio frequency produce circuit module, module, electronic switch module, power module and single -chip module are enlargied in the detection, when not reading the card, above -mentioned circuit is in state of dormancy, only when reading the card, the contact circuit intercommunication sends the enabling signal and arrives in the singlechip, the singlechip is opened the electronic switch module, the system normally works, by the detection enlarge the module read radio -frequency card information input to in the singlechip, decode, the back system of decoding gets into state of dormancy, up to read next time. The system takes inductive switch contact circuit, only opens when reading radiofrequency signal, very big reduction the consumption of the energy, be applicable to various radio -frequency card reading device, be particularly useful for in the radio -frequency card reader device of inside non -transformer.
Description
Technical field
The utility model relates to the communications field, particularly field of radio frequency communication.
Background technology
Radio-frequency (RF) identification, RFID(RadioFrequencyIdentification) technology, also known as radio frequency identification, is a kind of communication technology, read and write related data by radio signals identification specific objective, and without the need to setting up machinery or optical contact between recognition system and specific objective.
Radio-frequency technique is widely used in daily life at present, brings many convenience to the life of people.The principle of radio-frequency technique is: wireless signal is the electromagnetic field by furnishing radio frequency, and data are sent out from the label be attached to article, with automatic Identification and these article of tracking.The elect magnetic field that some label sends from recognizer when identifying just can obtain energy, does not need battery; Also there is label itself to have power supply, and initiatively can send radiowave (electromagnetic field of furnishing radio frequency).Label contains the information of Electronic saving, can identify within several meters.With bar code unlike, radio-frequency (RF) tag does not need to be within recognizer sight line, can embed within tracked object yet.
Many industries have all used REID.Such as, label is attached to an automobile just aborning, this car progress on a production line just can be followed the trail of by manufacturer.It has been exactly ID and IC-card technology that current people contact maximum REID, by the property gate inhibition that ID and IC-card can be in people residence district, water, electricity or combustion gas payment card, also can be having dinner or attendance card of student or employee dining room, also can be the daily mass transit card taken
The every aspect of radio frequency applications in people's life in a word, application surface is very wide, uses crowd very huge, and bring many facilities to people's life, be also life informatization and modern important behaviour aspect simultaneously.
But the card-reading mode of the radio-frequency card card reader of existing widespread use, all by the continual transmission radio frequency test signal of card reader, when in effective reading range of radio-frequency card, after effective rf modulated signal being detected, by amplifying after the detection in card reader, then send in the single-chip microcomputer in card reader, decode, read useful signal, then according to this signal, corresponding lower bit manipulation will be carried out.
Such card-reading mode, cause the continual power consumption of the card reader of radio-frequency card, the consumption of electric current is approximately 40mA ~ 60mA/min, energy resource consumption is very big, if what change that card reader adopts is battery powered words, and battery during a pair 2500mA, can only be worked at most 60 hours, amount of battery consumption is very big, and the consumption of battery also can cause great environmental pressure very greatly, is not suitable with the life idea of modern environmental protection.Because the range of application of radio-frequency card is extremely wide, such electric quantity consumption and corresponding energy resource consumption, just embody more outstanding; Be badly in need of a kind of method to change original card-reading mode.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency existing in prior art, a kind of card reading circuit of radio-frequency card and radio frequency card-reading system and radio frequency door access control system are provided, change original radio-frequency card card-reading mode, only when Card Reader, automatic start up system, system auto sleep, greatly reduces system power consumption at ordinary times, meets the energy-conserving and environment-protective theory of the modern life.The utility model is particularly useful for the radio-frequency card card-reading system relying on battery power.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme: a kind of card reading circuit of radio-frequency card, comprises contact circuit, Anneta module, radio frequency generation circuit module, detection amplification module, electronic switch module, power module and one-chip computer module;
Wherein said contact circuit is connected with described one-chip computer module;
Described Anneta module, radio frequency produce circuit module and are connected successively with electronic switch module, and the electronic switch module side after being connected is connected with described one-chip computer module;
One end of described detection amplification module accesses described Anneta module and radio frequency produces between circuit module;
The other end of described detection amplification module accesses described radio frequency and produces between circuit module and contactor module;
Described detector amplefier module is also connected with described one-chip computer module.
Further, described contact circuit module comprises the first metal node and the second metal node.
Further, when the first metal node of described contact circuit module peripheral metal object make contact circuit and the second metal node, produce enabling signal, be input in described single-chip microcomputer, open described circuit by single-chip microcomputer.
Further, described single-chip microcomputer is by controlling described electronic switch module, the opening and closing of control circuit.
Further, described power module is powered to radio frequency generation circuit module and detection amplification module.
Further, described detection amplification module detects the radio-frequency information in radio-frequency card, and is input in described one-chip computer module by above-mentioned radio-frequency information and decodes, and completes decoding Card Reader task by described one-chip computer module.
Further, described circuit, when not reading radio-frequency card information, is in dormant state.
Further, described enabling signal is low level signal.
Further, when reading radio-frequency card information, with Metal Contact thing contact contact circuit, when connecting the first metal node and the second metal node, sending enabling signal in described single-chip microcomputer, opening described circuit by single-chip microcomputer.
Further, described circuit is used in the radio-frequency card card-reading system of IC-card or ID card.
Further, radio-frequency card reading circuit described above is applied in a kind of gate control system and a kind of radio-frequency card card-reading system, this circuit application is in access card card-reading system and in radio-frequency card card-reading system, only open when Card Reader, do not need Card Reader long-time in be in, closed condition, can reduce the consumption of battery and electric energy greatly.
compared with prior art, the beneficial effects of the utility model: the card reading circuit of the utility model radio-frequency card comprises contact circuit, Anneta module, radio frequency generation circuit module, detection amplification module, electronic switch module, power module and one-chip computer module; When not carrying out Card Reader, foregoing circuit is in dormant state, only when Card Reader, described contact circuit is communicated with, and sends enabling signal in described single-chip microcomputer, described electronic switch module opened by described single-chip microcomputer, system worked well, reads radio-frequency card information by detection amplification module and is input in described single-chip microcomputer, decode, after decoding, system enters dormant state, until read next time.System takes inductive switch contact circuit, only open when reading radio frequency signal, greatly reduce the consumption of the energy, it is a kind of radio-frequency card signal-obtaining mode of environment-friendly high-efficiency, be applicable in various radio-frequency card reading device, be particularly useful for the radio-frequency card card-reading system relying on battery power, the service time of battery can be extended greatly, reduce the use amount of battery, the function of its energy saving standard is remarkable, is particularly useful for inner not containing in the radio-frequency card card reader of power supply and access card card-reading system.
Accompanying drawing explanation
Fig. 1 is the energy-conservation card reading circuit structural drawing of this radio-frequency card.
The energy-conservation card reading method workflow diagram of this radio-frequency card of Fig. 2.
Embodiment
Below in conjunction with test example and embodiment, the utility model is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
A card-reading system for radio-frequency card, changes original radio-frequency card card-reading mode, and only when Card Reader, automatic start up system, system auto sleep, greatly reduces system power consumption at ordinary times, meets the energy-conserving and environment-protective theory of the modern life.The utility model is particularly useful for the radio-frequency card card-reading system relying on battery power.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme: a kind of card reading circuit of radio-frequency card, as shown in Figure 1, contact circuit, Anneta module, radio frequency generation circuit module, detection amplification module, electronic switch module, power module and one-chip computer module is comprised;
Wherein said contact circuit is connected with described one-chip computer module;
Described Anneta module, radio frequency produce circuit module and are connected successively with electronic switch module, and the electronic switch module side after being connected is connected with described one-chip computer module;
One end of described detection amplification module accesses described Anneta module and radio frequency produces between circuit module;
The other end of described detection amplification module accesses described radio frequency and produces between circuit module and contactor module;
Described detector amplefier module is also connected with described one-chip computer module.
Further, described contact circuit comprises the first metal node and the second metal node.
The course of work of the card reading circuit of this radio-frequency card, comprises following steps as shown in Figure 2:
(1) when the first metal node and the second metal node of external metallization thing make contact circuit, produce enabling signal, be input to described one-chip computer module;
(2) electronic switch module opened by described single-chip microcomputer, and the power module be attached thereto opened by electronic switch, and power module is powered to radio-frequency (RF) circuit module and detection amplification module; Electronic switch, frequency circuit module and detection amplification module are started working, the system radio-frequency (RF) circuit module of opening in rear system produces decoding radiofrequency signal, decoding radiofrequency signal is sent in surrounding space through Anneta module, and the circuit be positioned on the radio-frequency card of system attachment coverage enter into decoding radiofrequency signal electromagnetic field after, produce induction current, send the respective radio-frequency information of this radio-frequency card according to faradic obtained energy;
(3) radio-frequency information that described radio-frequency card sends is detected amplification module and detects;
(4) the above-mentioned radio-frequency information detected is input in described one-chip computer module and decodes by described detection amplification module, completes decoding Card Reader task by described one-chip computer module;
(5), after above-mentioned Card Reader process completes, described single-chip microcomputer cuts out electronic switch, and system enters dormant state.
Further, described enabling signal is low level signal.
Due to only when needs Card Reader, with Metal Contact thing contact contact circuit, when connecting the first metal node and the second metal node, said system just can be unlocked, when the overwhelming majority time does not need to carry out Card Reader, said system is all be in dormant state, saved a large amount of energy, such design is particularly useful for the radio-frequency card card-reading system relying on battery power, can extend the service time of battery greatly, reduce the use amount of battery, the function of its energy saving standard is remarkable.
Further, foregoing circuit can be used for inner not containing in the radio-frequency card card reader of power supply.
Further, described radio-frequency card card reader is IC-card card reader, and IC-card range of application is wide, and a lot of IC-card card reader, relies on powered battery; An energy-conservation card reading circuit for radio-frequency card, can reduce the consumption of battery and electric energy greatly.
Further, described radio-frequency card card reader is ID card reader, and ID card range of application is wide, and a lot of ID card reader, relies on powered battery; An energy-conservation card reading circuit for radio-frequency card, can reduce the consumption of battery and electric energy greatly.
Further, described radio-frequency card card reader is applied in access card card-reading system, current gate control system is widely used, and it is irregular to have the Card Reader time interval, totally need the feature that the time of Card Reader is short, the signal that the current many employings of access card card-reading system carry out radio-frequency card by the mode of the continual transmission radio frequency test signal of card device sets and detects, and is substantially within 24 hours, to be in start power consumption state; This circuit application, in access card card-reading system, is only opened when Card Reader, do not need Card Reader long-time in be in, closed condition, can reduce the consumption of battery and electric energy greatly; Radio-frequency card card reader is particularly useful in the entrance guard management of the equipment such as inner power free cabinet.
The card reading circuit of the utility model radio-frequency card comprises contact circuit, Anneta module, radio frequency generation circuit module, detection amplification module, electronic switch module, power module and one-chip computer module; When not carrying out Card Reader, foregoing circuit is in dormant state, only when Card Reader, described contact circuit is communicated with, and sends enabling signal in described single-chip microcomputer, described electronic switch module opened by described single-chip microcomputer, system worked well, reads radio-frequency card information by detection amplification module and is input in described single-chip microcomputer, decode, after decoding, system enters dormant state, until read next time.System takes inductive switch contact circuit, only open when reading radio frequency signal, greatly reduce the consumption of the energy, it is a kind of radio-frequency card signal-obtaining mode of environment-friendly high-efficiency, be applicable in various radio-frequency card reading device, be particularly useful for the radio-frequency card card-reading system relying on battery power, the service time of battery can be extended greatly, reduce the use amount of battery, the function of its energy saving standard is remarkable, is particularly useful for inner not containing in the radio-frequency card card reader of power supply and access card card-reading system.
Claims (11)
1. a card reading circuit for radio-frequency card, is characterized in that, comprises contact circuit, Anneta module, radio frequency generation circuit module, detection amplification module, electronic switch module, power module and one-chip computer module;
Wherein said contact circuit is connected with described one-chip computer module;
Described, Anneta module, radio frequency produce circuit module and are connected successively with electronic switch module, and the electronic switch module side after being connected is connected with described one-chip computer module;
One end of described detection amplification module accesses described Anneta module and radio frequency produces between circuit module;
The other end of described detection amplification module accesses described radio frequency and produces between circuit module and contactor module;
Described detector amplefier module is also connected with described one-chip computer module.
2. the card reading circuit of a kind of radio-frequency card as claimed in claim 1, is characterized in that, described contact circuit module comprises the first metal node and the second metal node.
3. the card reading circuit of a kind of radio-frequency card as claimed in claim 2, is characterized in that, when not reading radio-frequency card information, described circuit is in dormant state.
4. the card reading circuit of a kind of radio-frequency card as claimed in claim 3, it is characterized in that, when reading radio-frequency card information, the first metal node in described contact circuit module and the second metal node are switched on, send enabling signal in described single-chip microcomputer, open described circuit by single-chip microcomputer.
5. the card reading circuit of a kind of radio-frequency card as claimed in claim 4, is characterized in that, described enabling signal is low level.
6. the card reading circuit of a kind of radio-frequency card as claimed in claim 4, is characterized in that, described single-chip microcomputer is by controlling described electronic switch module, the opening and closing of control circuit.
7. the card reading circuit of a kind of radio-frequency card as claimed in claim 6, is characterized in that, described power module, for described radio frequency generation circuit module and detection amplification module provide power supply.
8. the card reading circuit of a kind of radio-frequency card as claimed in claim 7, is characterized in that, during radio-frequency card Card Reader, described detection amplification module detects the radio-frequency information in radio-frequency card; And above-mentioned information is sent in described one-chip computer module decodes, describedly complete decoding and Card Reader task by one-chip computer module.
9. the card reading circuit of a kind of radio-frequency card as described in one of claim 1 to 8, is characterized in that, described circuit is for comprising in the radio-frequency card card-reading system of IC-card or ID card.
10. a radio-frequency card card-reading system, is characterized in that, the energy-conservation card reading circuit of the radio-frequency card one of to comprise as described in claim 1 to 9.
11. 1 kinds of radio frequency door access control systems, is characterized in that, the energy-conservation card reading circuit of the radio-frequency card one of to comprise as described in claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362763.0U CN204759434U (en) | 2015-05-29 | 2015-05-29 | Radio -frequency card read card circuit and card system and radio frequency access control system are read to radio -frequency card |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362763.0U CN204759434U (en) | 2015-05-29 | 2015-05-29 | Radio -frequency card read card circuit and card system and radio frequency access control system are read to radio -frequency card |
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| CN204759434U true CN204759434U (en) | 2015-11-11 |
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| CN201520362763.0U Active CN204759434U (en) | 2015-05-29 | 2015-05-29 | Radio -frequency card read card circuit and card system and radio frequency access control system are read to radio -frequency card |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104850812A (en) * | 2015-05-29 | 2015-08-19 | 成都四方信息技术有限公司 | Energy-saving card reading circuit, method and system of radio frequency card |
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2015
- 2015-05-29 CN CN201520362763.0U patent/CN204759434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104850812A (en) * | 2015-05-29 | 2015-08-19 | 成都四方信息技术有限公司 | Energy-saving card reading circuit, method and system of radio frequency card |
| CN104850812B (en) * | 2015-05-29 | 2017-11-10 | 成都四方信息技术有限公司 | A kind of energy-conservation card reading circuit of radio-frequency card, method and system |
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| GR01 | Patent grant |