CN201242751Y

CN201242751Y - Low power consumption control device for non-contact IC card reader-writer

Info

Publication number: CN201242751Y
Application number: CNU2008200501240U
Authority: CN
Inventors: 何枝铭
Original assignee: GUANGDONG TELEPOWER TELECOM-TECH Co Ltd
Current assignee: Guangdong Telepower Communication Co., Ltd.; Guangdong Tianbo Education Technology Co. Ltd.
Priority date: 2008-07-02
Filing date: 2008-07-02
Publication date: 2009-05-20
Anticipated expiration: 2018-07-02

Abstract

The utility model discloses a low power consumption control device for a non-contact type IC card reader-writer, which comprises a CUP, and a reader-writer and an antenna plate which are mutually connected; wherein, a control unit is arranged in the CPU, and a reading-writing unit is arranged in the reader-writer; the control unit is used for detecting whether the reading-writing unit sends a read-write request or not and controlling the reader-writer to enter into a working or dormant state according to the detection results. The CPU controls the non-contact type radiofrequency IC card reader-writer into the dormant state or the card-reading working state, thus ensuring that the radiofrequency circuit of reader-writer is unnecessary to be in the working state at all times, only when reading a card, the CPU controls the reader-writer to be in the working state and in the dormant state when the card-reading is finished; therefore the time of card-reading working state is reduced, the power consumption is saved, and the purpose of saving power is reached.

Description

Noncontact IC card read/write device low power consumption control device

Technical field

The utility model relates to a kind of based on access terminal, adopt battery powered terminal noncontact IC card read/write device low power consumption control device from telephone wire power taking, fixed network.

Background technology

The non-contact radio-frequency IC-card is compared with traditional Contact Type Ic Card, magnetic card, it is the contactless recognition device that utilizes REID (radio frequncy identification) exploitation, on performances such as lifetime of system, anti-monitoring, anti-deciphering, all have very big advantage, so noncontact IC card read/write device can quicken to replace contact reader.In use, the antenna of noncontact IC card read/write device utilizes inductive coupling to produce magnetic flux, magnetic flux is used for providing power supply to IC-card, and transmit data between the two, because therefore the continuous emitting radio wave of noncontact IC card read/write device exists a problem, be that power consumption is bigger than Contact Type Ic Card read write line, be unfavorable for electricity saving and energy saving, the occasion of power requirement low-power consumption has obstacle, has limited it and has applied.

Summary of the invention

The purpose of this utility model is to overcome the big technical matters of noncontact IC card read/write device power consumption in the prior art, provides a kind of read write line to consume noncontact IC card read/write device low power consumption control device to reduce power supply by the compartment Card Reader.

For realizing above purpose, the utility model has been taked following technical scheme: a kind of noncontact IC card read/write device low power consumption control device, include CPU, interconnective read write line and antenna plate, be provided with control module in the described CPU, be provided with read-write cell in the described read write line; Described control module detects described read-write cell and whether sends read-write requests, and controls described read write line according to testing result and enter work or dormant state.

Also be provided with the detecting unit that is electrically connected with control module in the described CPU, this detecting unit is used to detect CPU and has or not and receive the read-write requests that described read-write cell sends, after receiving read-write requests, described detecting unit sends signal and gives control module, control module carries out the work of Card Reader, communication according to this detection signal, end-of-job, described read write line enters dormant state; When detecting unit did not detect the read-write requests of read-write cell, control module control read write line directly entered dormant state.

After being waken up, principle of work of the present utility model: CPU control non-fit radio-frequency (RF) IC card module for reading and writing carries out the Card Reader duty from dormant state, if card is arranged or communication request is arranged, just carry out the course of work of normal operating conditionss such as Card Reader, communication, end-of-job just enters dormancy; If there is not card, just directly enter dormant state, reduce power supply by the compartment Card Reader and consume.

The utility model compared with prior art, have following advantage: CPU control control non-contact radio-frequency IC-card read write line and be in dormant state or Card Reader duty, make the radio circuit of read write line carve in running order when not required, CPU is only when Card Reader, go control to make card reader in running order, Card Reader finishing control card reader is in dormant state, reduces the time of Card Reader duty, consume thereby saved power supply, reached purpose of power saving; On the other hand because existing fixed network that noncontact, fixed line incoming call the breathe out excessive problem of read write line power consumption that accesses terminal that integrates, guarantee the normal duty of terminal by increasing power supply, therefore the solution of low-power consumption problem, to bring great convenience to installation and maintenance, and can effectively reduce product installation and maintenance cost (as the disbursement of flat cost etc.), satisfy the demand of telecom operators well, extensive and huge market and application prospect are arranged.

Description of drawings

Fig. 1 is the utility model system chart;

Fig. 2 moves towards synoptic diagram for CPU and read write line signal;

Fig. 3 is the read write line circuit theory diagrams.

Embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

See also Fig. 1, shown in Figure 2, a kind of noncontact IC card read/write device low power consumption control device includes CPU, interconnective read write line and antenna plate.

Be provided with control module in the CPU, be provided with read-write cell in the read write line; Control module detects read-write cell and whether sends read-write requests, and controls described read write line according to testing result and enter work or dormant state.

In CPU, also be provided with the detecting unit that is electrically connected with control module, this detecting unit is used to detect CPU and has or not and receive the read-write requests that read-write cell sends, after receiving read-write requests, detecting unit sends signal and gives control module, control module carries out the work of Card Reader, communication according to this detection signal, end-of-job, read write line enters dormant state; When detecting unit does not detect the read-write requests of read-write cell, the detection signal that control module sends according to detecting unit, the control read write line directly enters dormant state.

Present embodiment is in conjunction with noncontact IC card read/write device circuit hardware module shown in Figure 3, and U1 is contactless card reader main control chip among Fig. 3, and wherein label is that SS02, SCLK, DATA1, RSPD, CSFM are the control buss that is connected with CPU; Label is Rx1, Tx11, and TGND, Tx22 are the interface between antenna and this read write line.

The RSPD signal wire is control read write line radio-frequency module work or the control line that is in low-power consumption (not working) among Fig. 3, generally in normal operation, the working current that radio-frequency module needs is: 50 ~ 70mA, and CPU work the time can at every moment not remove to visit radio-frequency module, just go when needed visit, therefore in radio-frequency module, be provided with two working times, wherein the T1 time is 15 milliseconds (radio-frequency module working times), the T2 time is 285 milliseconds (radio-frequency module down time), at this moment the power consumption of whole radio-frequency module is: (50 ~ 70mA) * 15/300=(2.5 ~ 3.5mA), greatly reduce the effect of radio-frequency module.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1, a kind of noncontact IC card read/write device low power consumption control device includes CPU, interconnective read write line and antenna plate, it is characterized in that: be provided with control module in the described CPU, be provided with read-write cell in the described read write line; Described control module detects described read-write cell and whether sends read-write requests, and controls described read write line according to testing result and enter work or dormant state.

2, noncontact IC card read/write device low power consumption control device as claimed in claim 1, it is characterized in that: also be provided with the detecting unit that is electrically connected with control module in the described CPU, this detecting unit is used to detect CPU and has or not and receive the read-write requests that described read-write cell sends, after receiving read-write requests, described detecting unit sends signal and gives control module, control module carries out the work of Card Reader, communication according to this detection signal, end-of-job, and read write line enters dormant state; When detecting unit did not detect the read-write requests of read-write cell, control module control read write line directly entered dormant state.