CN203012736U - Card reader device for connecting earphone-microphone interface - Google Patents
Card reader device for connecting earphone-microphone interface Download PDFInfo
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- CN203012736U CN203012736U CN 201120416897 CN201120416897U CN203012736U CN 203012736 U CN203012736 U CN 203012736U CN 201120416897 CN201120416897 CN 201120416897 CN 201120416897 U CN201120416897 U CN 201120416897U CN 203012736 U CN203012736 U CN 203012736U
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Abstract
The utility model relates to a card reader device for connecting an earphone-microphone interface. The card reader device is characterized in that the data communication is conducted by connecting an earphone and a microphone to a mobile phone to finish the data exchange required by card reading. The device comprises a plastic outer box, an earphone-microphone plug, a card reading magnetic head and a main control circuit board, wherein the main control circuit board comprises a single chip microcomputer main control circuit, a rectifying circuit, a boosting circuit, a filtering circuit and a magnetic head decoding circuit. When swiping the magnetic card, the magnetic head recovers the information recorded by the magnetic card into a Manchester's code signal, the main control board decodes the signal into national standard data, and then transmits a digital signal through the filtering circuit to the mobile phone via the microphone jack thereof. The mobile phone terminal carries out sampling and receiving process through programs, obtains the data information on the magnetic card, and is connected with a Unionpay interface by utilizing the application software designed by the mobile phone terminal, so as to realize the mobile payment function. An AC signal with fixed frequency and maximum volume is output from the earphone interface of the mobile phone, and then supplies power for the whole card reader circuit device after being rectified and boosted.
Description
[technical field]
The utility model relates to a kind of design of electronic circuit, its design function comprise to the reading of magnetic card recorded information, encoding and decoding conversion, based on the mobile phone microphone interface carry out data transmission, power based on earphone interface of mobile phone.The utility model design realizes a kind of card reader with extensive suitability, mobile application.
[background technology]
The application of mobile phone exceeds the category of telephone communication already, various mobile application and development based on mobile phone emerges in an endless stream, demonstrated fully the movability advantage of mobile phone, smart mobile phone more and more becomes a kind of transaction terminal of portable, the magnetic card reader of adaptive mobile phone is a kind of outer handset device, the mobile payment of mobile phone is used the Card Reader support is provided, have wide application market.At present, the data-interface of each mobile phone producer is different, incompatible, limited the universality that outer handset equipment is used, mobile phone will read external unit information, the mobile phone of different brands usually will be undertaken by incompatible exclusive data interface, and this situation has caused outer handset equipment development difficulty, and adaptive cost is high.Yet the earphone microphone interface of different brands mobile phone is open, and interface standard is unified, realizes the data transmission of mobile phone and peripheral hardware by it, and cost of development is low, and highly versatile in the little application of transmitted data amount, has the advantage that is easy to popularize.
[utility model content]
The card reader arrangement of the utility model a kind of frames connecting with headphone microphone interface for smart mobile phone designs.Described card reader arrangement is a kind of general card information input equipment, by the outer box of plastics, and an earphone microphone plug, card-reading magnetic head and main control board form.Card reader arrangement be a kind of easily, the external unit of low energy consumption, card reader arrangement is connected to mobile phone by earphone, the microphone interface of mobile phone, card reader arrangement is powered by earphone interface by mobile phone, card reader arrangement transmits data to mobile phone through the mobile phone microphone interface.
Main content of the present utility model is the design of electronic circuits of described card reader arrangement, and the circuit of card reader arrangement structurally is comprised of governor circuit, rectification circuit, booster circuit, filtering circuit, decoding circuit, and circuit theory diagrams as shown in Figure 1.
card reader arrangement is by the outer box of plastics, earphone and phono connector, card-reading magnetic head and main control board form, the wiring of the headset plug of card reader arrangement is connected to the input end of card reader arrangement internal electric source module, the wiring of the phono connector of card reader arrangement is connected to the inner filtering circuit output terminal of card reader arrangement, during work, the headset plug of card reader arrangement is connected with the headset output interface of mobile phone, the phono connector of card reader arrangement is connected with the microphone input interface of mobile phone, from earphone interface of mobile phone output fixed frequency, the AC signal of max volume, give the whole circuit supply of card reader arrangement, import data message that card reader arrangement reads into to mobile phone from the microphone input interface of mobile phone.
Formed by governor circuit, rectification circuit, booster circuit, filtering circuit, decoding circuit on circuit structure.
Governor circuit is comprised of single-chip microcomputer and the peripheral circuit thereof of LPC1111 series, and governor circuit circulates from magnetic head decoding circuit buffer memory and reads binary signal, binary signal is transformed into the GB data, and outputs to filtering circuit.
Decoding circuit is connected to the MSI+/MSI-circuit pin of card-reading magnetic head, Manchester signal of magnetic head output is converted to binary signal, and be cached, and waits for that governor circuit reads and processes.
Power module is comprised of rectification circuit, booster circuit, rectification circuit input end is connected with earphone interface of mobile phone, and to carrying out rectification from the fixed frequency AC signal of earphone interface of mobile phone output, the conversion AC signal is direct current, boost through booster circuit, power supply is to whole main control board again.
Structure and the principle of work of each several part are as follows:
(1) card reader arrangement described in the utility model is equipped with a card-reading magnetic head, be used for reading the information of magnetic card record, card-reading magnetic head is exported Manchester's cde (Manchester ' s code) signal in the process of swiping the card, delivering to decoding circuit through MSI+/MSI-circuit pin decodes, decoding circuit converts Manchester signal of magnetic head output to binary signal, and be cached, wait for that governor circuit reads and processes.Circuit structure such as Fig. 2, decoding circuit adopt the special-purpose decoding chip of BS730Q magnetic head.
(2) described card reader arrangement governor circuit is comprised of microcontroller LPC1111 and the peripheral circuit based on ARM Cortex-M0 of low-power consumption, the RTD2/RCL2 pin of microcontroller LPC1111 (the 27th, 26 pin) is linked the RTD2/RCL2 pin of decoding circuit, binary signal is read in circulation from the buffer memory of magnetic head decoding circuit, binary signal is transformed into the GB data, and outputs to filtering circuit by P3.2 pin (the 28th pin).Circuit structure such as Fig. 3.The governor circuit microcontroller is programming device, in the governor circuit microcontroller, burning has firmware program, firmware program is responsible for the steering logic of flow chart of data processing, steering logic circulation is carried out: wait for user card punching, from the RTD2/RCL2 pin read data → with binary data be converted to GB data → generation CRC check code → output with the data-signal of CRC check to the P3.2 pin.
(3) circuit theory of the filtering circuit of card reader arrangement described in the utility model such as Fig. 4, the filtering circuit input end connects the P3.2 pin of governor circuit microcontroller LPC1111, and the output terminal of filtering circuit is connected to the MIC of mobile phone (microphone interface).Filtering circuit carries out de-noising to signal, and mobile phone circuit and card reader circuit are played buffer action.
(4) card reader arrangement described in the utility model is powered by mobile phone, and the power module of card reader arrangement circuit is comprised of rectification circuit, booster circuit, circuit theory such as Fig. 5.When the startup card reader arrangement enters duty, need mobile phone to send fixed frequency (fixed frequency value 22.1khz by program, but be not limited to 22.1khz), the voice signal of max volume, this signal is output as the AC signal of a fixed frequency by earphone interface.Receive the fixed frequency AC signal of earphone interface output with the direct-connected rectification circuit of earphone interface, carry out rectification by rectification circuit, the conversion AC signal is the about direct current of 1.2 volts, boosts to 3 volts through booster circuit, and power supply is to whole circuit.
Card reader arrangement described in the utility model has the phono connector of headset plug and the specification 3.5mm of a specification 3.5mm; but the specification 3.5mm of headset plug and phono connector does not consist of restriction of the present utility model; headset plug and phono connector can be combined into an earphone microphone synthetic linker; card reader arrangement adopts headset plug and the phono connector of other specification, also all falls into protection domain of the present utility model.The rectification circuit input end of power module is connected with the wiring of headset plug, and during work, the headset plug of card reader arrangement is connected with the headset output interface of mobile phone.The output terminal of card reader arrangement filtering circuit connects the wiring of phono connector, and during work, the phono connector of card reader arrangement is connected with the microphone input interface of mobile phone, as shown in Figure 6.During card reader arrangement work, the headset plug that is connected with power module circuitry is inserted in the headset output interface of mobile phone, and the phono connector that is connected with filtering circuit is inserted in the microphone input interface of mobile phone.power module circuitry receives the AC signal of fixed frequency, max volume from headset output interface, through the rectification circuit rectification of power module be direct current, again after booster circuit boosts power supply to the circuit of whole device, when carrying out when swiping the card, card-reading magnetic head reads the recorded information on magnetic card, generate Manchester signal, be transported to decoding circuit, decoding circuit conversion Manchester signal becomes binary signal, be placed in the output buffer memory of decoding circuit, the binary signal in the decoding circuit buffer memory is read in the governor circuit circulation, binary signal is transformed into the GB data, and output to filtering circuit, through filtering circuit, be input to mobile phone from the audio input interface (also referred to as microphone interface) of mobile phone, by the program of moving in the mobile phone reception of sampling, parse the data on magnetic card information that card reader arrangement is imported into, and complete the processing of data on magnetic card information.
The beneficial effect of the utility model design is:
1. pass through the microphone interface the transmission of data of mobile phone, the microphone interface of different brands mobile phone is all open, the unified interface standard is arranged, the card reader arrangement of the utility model design, mobile phone to different brands has suitability widely, do not need the authentication and authorization of mobile phone producer, in the little card information of transmitted data amount reads application, have the advantage that is easy to popularize.
2. earphone interface output max volume, the fixed frequency by mobile phone exchanges to the external device (ED) power supply, solved the powerup issue in mobile application, can give full play to the mobile payment characteristic of mobile phone.
3. the card reader arrangement of the utility model design has small and exquisite contour structures, and the accessory that can be used as mobile phone is carried, and realizes mobile Card Reader application.
4. with low cost, used less device to realize functions of card reader, be fit to large-scale production.
[description of drawings]
Fig. 1 is the complete circuit theory diagrams of card reader arrangement master control borad;
Fig. 2 is the schematic diagram of card reader arrangement decoding circuit;
Fig. 3 is the schematic diagram of card reader arrangement governor circuit;
Fig. 4 is the schematic diagram of card reader arrangement filtering circuit;
Fig. 5 is the circuit theory diagrams of card reader arrangement power module;
Fig. 6 is card reader arrangement and the docking and module relation diagram of mobile phone;
Fig. 7 is the Product Assembly figure of card reader arrangement
[embodiment]
Referring to Fig. 1-5, the utility model provides a kind of circuit design of carrying out the design of mutual card reader arrangement, particularly master control borad based on earphone microphone interface and mobile phone.
The card reader arrangement that the utility model is implemented comprises the outer box of plastics, an earphone microphone plug (3.5mm specification), and a card-reading magnetic head (band reed) and main control board, Product Assembly figure is as shown in Figure 7.
The schematic diagram of the master control borad complete design of card reader arrangement described in the utility model comprises governor circuit, magnetic head decoding circuit, filtering circuit and power module as shown in Figure 1.Card-reading magnetic head adopts the monorail magnetic head, reads the second track data of magnetic card, and decoding circuit adopts the special-purpose decoding chip of BS730Q magnetic head, and governor circuit is selected the microcontroller LPC1111 based on ARM Cortex-M0 of low-power consumption.Power module adopts the SP6651A chip that the approximately 1.2 voltaism voltage rises of rectification output are pressed onto 3 volts of left and right.
Claims (5)
1. the card reader arrangement of a frames connecting with headphone microphone interface, it is characterized in that card reader arrangement is by the outer box of plastics, earphone and phono connector, card-reading magnetic head and main control board form, the wiring of the headset plug of card reader arrangement is connected to the input end of card reader arrangement internal electric source module, the wiring of the phono connector of card reader arrangement is connected to the inner filtering circuit output terminal of card reader arrangement, during work, the headset plug of card reader arrangement is connected with the headset output interface of mobile phone, the phono connector of card reader arrangement is connected with the microphone input interface of mobile phone, from earphone interface of mobile phone output fixed frequency, the AC signal of max volume, give the whole circuit supply of card reader arrangement, import data message that card reader arrangement reads into to mobile phone from the microphone input interface of mobile phone.
2. the card reader arrangement of a kind of frames connecting with headphone microphone interface claimed in claim 1, is characterized in that being comprised of governor circuit, rectification circuit, booster circuit, filtering circuit, decoding circuit on circuit structure.
3. the card reader arrangement of a kind of frames connecting with headphone microphone interface claimed in claim 1, it is characterized by governor circuit is comprised of single-chip microcomputer and the peripheral circuit thereof of LPC1111 series, governor circuit circulates from magnetic head decoding circuit buffer memory and reads binary signal, binary signal is transformed into the GB data, and outputs to filtering circuit.
4. the card reader arrangement of a kind of frames connecting with headphone microphone interface claimed in claim 1, it is characterized by the MSI+/MSI-circuit pin that decoding circuit is connected to card-reading magnetic head, Manchester signal of magnetic head output is converted to binary signal, and be cached, wait for that governor circuit reads and processes.
5. the card reader arrangement of a kind of frames connecting with headphone microphone interface claimed in claim 1, it is characterized by power module is comprised of rectification circuit, booster circuit, rectification circuit input end is connected with earphone interface of mobile phone, to carrying out rectification from the fixed frequency AC signal of earphone interface of mobile phone output, the conversion AC signal is direct current, boost through booster circuit, power supply is to whole main control board again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120416897 CN203012736U (en) | 2011-10-26 | 2011-10-26 | Card reader device for connecting earphone-microphone interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120416897 CN203012736U (en) | 2011-10-26 | 2011-10-26 | Card reader device for connecting earphone-microphone interface |
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| Publication Number | Publication Date |
|---|---|
| CN203012736U true CN203012736U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120416897 Expired - Fee Related CN203012736U (en) | 2011-10-26 | 2011-10-26 | Card reader device for connecting earphone-microphone interface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685749A (en) * | 2013-12-06 | 2014-03-26 | 无锡清华信息科学与技术国家实验室物联网技术中心 | Communication electricity taking device and method based on mobile phone earphone interface |
| CN104424495A (en) * | 2013-09-03 | 2015-03-18 | 速码波科技股份有限公司 | Card transaction device and card transaction method |
-
2011
- 2011-10-26 CN CN 201120416897 patent/CN203012736U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424495A (en) * | 2013-09-03 | 2015-03-18 | 速码波科技股份有限公司 | Card transaction device and card transaction method |
| CN103685749A (en) * | 2013-12-06 | 2014-03-26 | 无锡清华信息科学与技术国家实验室物联网技术中心 | Communication electricity taking device and method based on mobile phone earphone interface |
| CN103685749B (en) * | 2013-12-06 | 2015-07-22 | 无锡清华信息科学与技术国家实验室物联网技术中心 | Communication electricity taking device and method based on mobile phone earphone interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG VISION INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGZHOU WANGJIA INFORMATION TECHNOLOGY CO., LTD. Effective date: 20150429 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150429 Address after: Yuexiu District Guangzhou City, Guangdong province 510070 martyrs Road No. 102 North Tower Hua Sheng Building, 16 floor Patentee after: Guangdong prospect Mdt InfoTech Ltd Address before: Yuexiu District Guangzhou City, Guangdong province 510070 martyrs Road No. 102 North Tower Hua Sheng Building, 16 floor Patentee before: Guangzhou Wangjia Information Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20171026 |
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| CF01 | Termination of patent right due to non-payment of annual fee |