CN103475795B - DTMF sound remote communication device for financial POS system - Google Patents
DTMF sound remote communication device for financial POS system Download PDFInfo
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- CN103475795B CN103475795B CN201310445472.3A CN201310445472A CN103475795B CN 103475795 B CN103475795 B CN 103475795B CN 201310445472 A CN201310445472 A CN 201310445472A CN 103475795 B CN103475795 B CN 103475795B
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Abstract
The present invention relates to a kind of financial POS system DTMF sound remote communication device, comprise main control unit, dtmf signal sending module and dtmf signal receiver module, also comprise converter, dtmf signal sending module comprises dtmf signal generator, transtation mission circuit, dtmf signal receiver module comprises dtmf signal receiver, receiving circuit, dtmf signal generator is connected with main control unit, transtation mission circuit respectively, dtmf signal receiver is connected with main control unit, receiving circuit respectively, and receiving circuit, transtation mission circuit are connected to converter. The present invention moves financial POS and no longer needs to carry communication module, and circuit structure is simple, volume is small and exquisite, implements simple, communication robust; The communication media (telephone line or mobile phone) using is seen everywhere, and is not subject to use occasion restriction; Manufacturing cost is comparatively economical, in the occasion that does not need high speed transmission data, can realize low cost, high efficiencyly complete transaction.
Description
Technical field
The present invention relates to financial POS technical field, relate in particular to the communication of a kind of financial POS system DTMF sound remoteDevice.
Background technology
Adopt of existing financial POS dialled or comprised the channel radios such as GPRS, CDMA, WCDMA and WIFI by PSTN moreNews mode.
Under PSTN dial mode, trade company's end POS machine is swiped the card after operation in response, utilizes built-in MODEM to carry out synchronouslyOr async dialup, be positioned at the dialing request of the quick connection MODEM response POS end of acquirer side POS access device insideAnd set up communication link, thus the POS machine of trade company's end is linked in the card account system of acquirer, and then transaction.
At wireless communication modes such as GPRS, CDMA, WCDMA and WIFI, be that wireless communication module is embedded into financeIn POS, PPP is connected to internet, carries out TCP/IP communication with the transaction backstage of acquirer side, and then transaction.
In above-mentioned traditional financial POS communication modes, dial mode need to be at the built-in dialing of POS MODEN, and volume is larger,And cost is higher; Traditional wireless mode, once fix because of the built-in wireless communication module type selecting of machine, just can only adoptWith a kind of communication of standard, and current, different operators moves different networks, is subject to the impact of communication standard,Larger in different local signal quality difference.
Summary of the invention
The object of the invention is to the defect for overcoming prior art, and a kind of financial POS system DTMF voice are providedTelecommunication devices.
For achieving the above object, the present invention by the following technical solutions: a kind of financial POS system DTMF voiceTelecommunication devices, comprises main control unit, dtmf signal sending module and dtmf signal receiver module, also comprisesConverter, described dtmf signal sending module comprises dtmf signal generator, transtation mission circuit, dtmf signal connectsReceive module comprise dtmf signal receiver, receiving circuit, described dtmf signal generator respectively with main control unit,Transtation mission circuit connects, and dtmf signal receiver is connected with main control unit, receiving circuit respectively, described receiving circuit,Transtation mission circuit is connected to converter.
Described converter comprises the first converter joint, and described transtation mission circuit comprises resistance R 1, resistance R the 2, the 1Utmost point pipe Q1, light lotus root U1, resistance R 1 one end is connected in the signal output part of dtmf signal generator, and resistance R 1 is anotherOne end of one end contact resistance R2, the other end of resistance R 2 connects the base stage of the first triode Q1, the first triodeThe emitter stage of Q1 connects 1 pin of light lotus root U1, and the colelctor electrode of the first triode Q1 connects power supply, 2 of light lotus root U1Pin ground connection, 3 pin of light lotus root U1 connect 1 port of the first converter joint, and 4 pin of light lotus root U1 connect the first conversion2 ports of device joint, 3 port ground connection of the first converter joint; Described receiving circuit comprises capacitor C 1, resistanceR9,4 ports of the first converter joint connect one end of capacitor C 1, the other end contact resistance R9's of capacitor C 1One end, the other end of resistance R 9 connects the signal input part of dtmf signal receiver.
Described converter also comprises the second converter joint, and described transtation mission circuit also comprises resistance R 3, capacitor C 2,Two triode Q2, one end of described resistance R 3 is connected with one end of resistance R 1, and the other end of resistance R 3 connects secondThe base stage of triode Q2, the grounded emitter of the second triode Q2, the colelctor electrode of the second triode Q2 and second turns0 port of parallel operation joint connects, and capacitor C 2 is in parallel with resistance R 3; Described dtmf signal receiver module also comprises oneReduction voltage circuit, the input of described reduction voltage circuit is connected with 4 ports of the second converter joint, described reduction voltage circuitOutput is connected with one end of capacitor C 1, and 1 port of the second converter joint connects power supply, the second converter joint5 port ground connection.
Described reduction voltage circuit comprise the 3rd triode Q3, the 4th triode Q4, diode D1, voltage-stabiliser tube ZD1,Inductance L 1, resistance R 6, resistance R 7, resistance R 8, the positive pole of diode D1 connects 4 ends of the second converter jointMouthful, one end of the negative pole contact resistance R6 of diode D1, the other end of resistance R 6 connects the 3rd triode Q3'sBase stage, the emitter stage of the 3rd triode Q3 connects the negative pole of voltage-stabiliser tube ZD1, the plus earth of voltage-stabiliser tube ZD1, theThe colelctor electrode of three triode Q3 connects the emitter stage of the 4th triode Q4, and one end of inductance L 1 connects diode D1Negative pole, the other end of inductance L 1 connects the colelctor electrode of the 3rd triode Q3, one end of resistance R 7 connects the four or threeThe base stage of utmost point pipe Q4, the other end of resistance R 7 connects the emitter stage of the 4th triode Q4, and one end of resistance R 8 connectsConnect the colelctor electrode of the 4th triode Q4, the other end of resistance R 8 connects one end of described capacitor C 1.
External the first oscillating circuit of described dtmf signal generator.
External the second oscillating circuit of described dtmf signal receiver.
Described dtmf signal generator is HT9200.
Described dtmf signal receiver HT9170.
The present invention's beneficial effect is compared with prior art: 1) compare the PSTN dialing, wireless of traditional financial POSCommunication modes, the present invention moves financial POS and no longer needs to carry communication module, and circuit structure is simple, volume is small and exquisite, realizesSimple, the communication robust of getting up; 2) communication media (telephone line or mobile phone) using is seen everywhere, and is not subject to makeLimit by occasion; 3) manufacturing cost is comparatively economical, in the occasion that does not need high speed transmission data, can realize low one-tenthThis, high efficiencyly complete transaction.
Brief description of the drawings
Fig. 1 is the circuit diagram of the preferred embodiment of the present invention.
Detailed description of the invention
In order to more fully understand technology contents of the present invention, below in conjunction with specific embodiment, technical scheme of the present invention is enteredOne step introduction and explanation.
As shown in Figure 1, be the circuit diagram of the preferred embodiment of the present invention, a kind of financial POS system DTMFSound remote communication device, comprises main control unit, dtmf signal sending module and dtmf signal receiver module, alsoComprise converter, dtmf signal sending module comprises dtmf signal generator 10, transtation mission circuit 50, DTMFSignal receiving module comprises dtmf signal receiver 20, receiving circuit 60, dtmf signal generator 10 respectively andMain control unit, transtation mission circuit 50 connect, dtmf signal receiver 20 respectively with main control unit, receiving circuit 60Connect, described receiving circuit 60, transtation mission circuit 50 are connected to converter.
Concrete, converter comprises the first converter joint 30, transtation mission circuit 50 comprise resistance R 1, resistance R 2,The first triode Q1, light lotus root U1, resistance R 1 one end is connected in the signal output part of dtmf signal generator 10,One end of resistance R 1 other end contact resistance R2, the other end of resistance R 2 connects the base stage of the first triode Q1,The emitter stage of the first triode Q1 connects 1 pin of light lotus root U1, and the colelctor electrode of the first triode Q1 connects power supply, lightThe 2 pin ground connection of lotus root U1,3 pin of light lotus root U1 connect 1 port of the first converter joint, and 4 pin of light lotus root U1 connectConnect 2 ports of the first converter joint, 3 port ground connection of the first converter joint; Described receiving circuit 60 comprises electricity4 ports that hold C1, resistance R 9, the first converter joints 30 connect one end of capacitor C 1, another of capacitor C 1One end of end contact resistance R9, the other end of resistance R 9 connects the signal input part of dtmf signal receiver 20.
Concrete, converter also comprises the second converter joint 40, transtation mission circuit 50 also comprises resistance R 3, electric capacityC2, the second triode Q2, one end of resistance R 3 is connected with one end of resistance R 1, and the other end of resistance R 3 connectsThe base stage of the second triode Q2, the grounded emitter of the second triode Q2, the colelctor electrode of the second triode Q2 and0 port of two converter joints 40 connects, and capacitor C 2 is in parallel with resistance R 3; Dtmf signal receiver module also wrapsDraw together a reduction voltage circuit 70, the input of reduction voltage circuit 70 is connected with 4 ports of the second converter joint 40, step-down electricityThe output on road 70 is connected with one end of capacitor C 1, and 1 port of the second converter joint 40 connects power supply, second5 port ground connection of converter joint 50.
Concrete, reduction voltage circuit 70 comprises the 3rd triode Q3, the 4th triode Q4, diode D1, voltage-stabiliser tubeZD1, inductance L 1, resistance R 6, resistance R 7, resistance R 8, the positive pole of diode D1 connects the second converter joint40 4 ports, one end of the negative pole contact resistance R6 of diode D1, the other end of resistance R 6 connects the three or three utmost pointThe base stage of pipe Q3, the emitter stage of the 3rd triode Q3 connects the negative pole of voltage-stabiliser tube ZD1, the positive pole of voltage-stabiliser tube ZD1Ground connection, the colelctor electrode of the 3rd triode Q3 connects the emitter stage of the 4th triode Q4, and one end of inductance L 1 connects twoThe negative pole of utmost point pipe D1, the other end of inductance L 1 connects the colelctor electrode of the 3rd triode Q3, and one end of resistance R 7 connectsConnect the base stage of the 4th triode Q4, the other end of resistance R 7 connects the emitter stage of the 4th triode Q4, resistance R 8One end connect the colelctor electrode of the 4th triode Q4, the other end of resistance R 8 connects one end of described capacitor C 1.
Concrete, external the first oscillating circuit 80 of dtmf signal generator 10.
Concrete, external the second oscillating circuit 90 of dtmf signal receiver 20.
Further, dtmf signal generator is HT9200.
Further, dtmf signal receiver HT9170.
Below operation principle of the present invention is further illustrated:
Dtmf signal sending module mainly comprises DTMF generator chip HT9200 and peripheral circuit thereof, the first vibration electricityWork reference clock be provided for chip HT9200 is normal in road 80; HT9200 the 1st pin connects master controller, and master controller imports intoSignal in the time turning low level by high level HT9200 receive data, thereby reach main controller controls HT9200 send letterNumber time point; HT9200 takes serial mode and master controller swap data, HT9200 the 5th pin connect master controller timeClock control signal sclk, HT9200 the 6th pin meets the data-signal cdata of master controller, and HT9200 is defeated by cdata pinThe code of a 5bit who enters is controlled different dtmf signal output, and these 5 codes come according to low level to high-order orderTransmit, and data to before arriving, sclk pin trailing edge be put in output latch; HT9200 the 8th connect+5V of pinPower supply, the 4th pin connects common ground, is the DTMF chip HT9200 power supply of normally working; HT9200 the 7th pin is dtmf signalOutput pin, HT9200 receives after the data signal of master controller, becomes DTMF touch-tone signal through internal conversion,Arrive phone or handset port by the 7th pin, transtation mission circuit 50, the first converter joint 30, the second converter joint 40.
Dtmf signal receiver module mainly comprises dtmf receiver chip HT9170 and peripheral circuit thereof, HT9170 the 2ndPin receives the dtmf signal that speech line transmission is got off; The 6th pin connects master controller, when master controller provides high level, and canMake electricity under HT9170 enter battery saving mode; 7th, external the second oscillating circuit 90 of the 8th pin, provides HT9170 work ginsengExamine frequency; The 9th pin common ground, the 18th connect+5V of pin power supply, provide chip normal working power; The 15th pin DV meets masterController, in the time that HT9170 receives an effective dtmf signal, DV sets high level notice master controller respective handling;The 10th pin OE connects master controller, is HT9170 output enable pin, and high level is effective; The the 11st to the 14th pin (D0, D1,D2, D3) connect respectively master controller, these four pins adopt the 4bit number of parallel mode output dtmf signal after conversionWord signal is to master controller, and master controller does subsequent treatment again.
Dtmf signal sending module sends dtmf signal processing, for fixed line and Cell Phone Design different interfaces,On the basis of above-mentioned DTMF sending and receiving principle of signal conversion, fixed line and mobile phone have been distinguished again in the transmission direction of signalDifferent. Fixed line interface sends, and dtmf signal is through HT9200 the 7th pin, from the of Q2 colelctor electrode to the second converter joint 400 pin, then sent by telephone line; Handset port sends, and dtmf signal is through HT9200 the 7th pin, through the conducting of Q1 emitter stageOptocoupler U1 to the first converter joint 30 the 2nd pin (the earphone MIC of mobile phone) is delivered to mobile phone, sends through mobile phone speech line.
Dtmf signal receiver module receives dtmf signal processing, fixed line interface, and Q4 colelctor electrode receives from telephone lineThe signal on road imports into after DTMF receiving chip HT9170 after R8, C1, R9 coupling denoise, and master controller is changedAfter data signal; Handset port, first converter joint 30 the 4th pin (mobile phone L channel) receive signal through C1,After R9 coupling denoise, import into after DTMF receiving chip HT9170, master controller obtains the data signal after conversion.
Above-mentioned dtmf signal sending module and dtmf signal receiver module both can be installed respectively in POS machine end or friendshipEasily background end, can install again jointly in POS machine end or transaction background end, realizes the transmission of signal.
The above only further illustrates technology contents of the present invention with embodiment, so that reader is easier to understand,But do not represent that embodiments of the present invention only limit to this, any technology of doing according to the present invention is extended or recreation, is all subject toProtection of the present invention.
Claims (7)
1. a DTMF sound remote communication device for financial POS system, comprises main control unit, DTMFSignal transmitting module and dtmf signal receiver module, is characterized in that, also comprises converter, described DTMFSignal transmitting module comprises dtmf signal generator, transtation mission circuit, and dtmf signal receiver module comprisesDtmf signal receiver, receiving circuit, described dtmf signal generator respectively with main control unit, transmissionCircuit connects, and dtmf signal receiver is connected with main control unit, receiving circuit respectively, described receiving circuit,Transtation mission circuit is connected to converter; Described converter comprises the first converter joint, described transtation mission circuitComprise resistance R 1, resistance R 2, the first triode Q1, light lotus root U1, resistance R 1 one end is connected in DTMFThe signal output part of signal generator, one end of resistance R 1 other end contact resistance R2, resistance R 2 anotherOne end connects the base stage of the first triode Q1, and the emitter stage of the first triode Q1 connects 1 pin of light lotus root U1,The colelctor electrode of the first triode Q1 connects power supply, the 2 pin ground connection of light lotus root U1, and 3 pin of light lotus root U1 connect1 port of the first converter joint, 4 pin of light lotus root U1 connect 2 ports of the first converter joint, first3 port ground connection of converter joint; Described receiving circuit comprises capacitor C 1, resistance R 9, the first converters4 ports of joint connect one end of capacitor C 1, one end of the other end contact resistance R9 of capacitor C 1, electricityThe other end of resistance R9 connects the signal input part of dtmf signal receiver.
2. DTMF sound remote communication device for financial POS system according to claim 1, its spyLevy in, described converter also comprises the second converter joint, described transtation mission circuit also comprises resistance R 3, electric capacityC2, the second triode Q2, one end of described resistance R 3 is connected with one end of resistance R 1, resistance R 3 anotherOne end connects the base stage of the second triode Q2, the grounded emitter of the second triode Q2, the second triodeThe colelctor electrode of Q2 is connected with 0 port of the second converter joint, and capacitor C 2 is in parallel with resistance R 3; DescribedDtmf signal receiver module also comprises a reduction voltage circuit, the input of described reduction voltage circuit and the second converter4 ports of joint connect, and the output of described reduction voltage circuit is connected with one end of capacitor C 1, the second converter1 port of joint connects power supply, 5 port ground connection of the second converter joint.
3. DTMF sound remote communication device for financial POS system according to claim 2, its spyLevy in, described reduction voltage circuit comprises the 3rd triode Q3, the 4th triode Q4, diode D1, voltage-stabiliser tubeZD1, inductance L 1, resistance R 6, resistance R 7, resistance R 8, the positive pole of diode D1 connects the second conversion4 ports of device joint, one end of the negative pole contact resistance R6 of diode D1, the other end of resistance R 6 connectsConnect the base stage of the 3rd triode Q3, the emitter stage of the 3rd triode Q3 connects the negative pole of voltage-stabiliser tube ZD1,The plus earth of voltage-stabiliser tube ZD1, the colelctor electrode of the 3rd triode Q3 connects the transmitting of the 4th triode Q4The utmost point, one end of inductance L 1 connects the negative pole of diode D1, and the other end of inductance L 1 connects the 3rd triodeThe colelctor electrode of Q3, one end of resistance R 7 connects the base stage of the 4th triode Q4, and the other end of resistance R 7 connectsConnect the emitter stage of the 4th triode Q4, one end of resistance R 8 connects the colelctor electrode of the 4th triode Q4, electricityThe other end of resistance R8 connects one end of described capacitor C 1.
4. DTMF sound remote communication device for financial POS system according to claim 3, its spyLevy in, external the first oscillating circuit of described dtmf signal generator.
5. DTMF sound remote communication device for financial POS system according to claim 3, its spyLevy in, external the second oscillating circuit of described dtmf signal receiver.
6. DTMF sound remote communication device for financial POS system according to claim 3, its spyLevy in, described dtmf signal generator is HT9200.
7. DTMF sound remote communication device for financial POS system according to claim 3, its spyLevy in, described dtmf signal receiver HT9170.
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| CN201310445472.3A CN103475795B (en) | 2013-09-26 | 2013-09-26 | DTMF sound remote communication device for financial POS system |
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| CN201310445472.3A CN103475795B (en) | 2013-09-26 | 2013-09-26 | DTMF sound remote communication device for financial POS system |
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| CN103475795B true CN103475795B (en) | 2016-05-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102326175A (en) * | 2009-02-10 | 2012-01-18 | 4361423加拿大有限公司 | Be used to use communication facilities to carry out the apparatus and method of business transaction |
| CN203522856U (en) * | 2013-09-26 | 2014-04-02 | 深圳市瑞柏泰电子有限公司 | DTMF voice telecommunication device for financial POS system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8543496B2 (en) * | 2007-04-27 | 2013-09-24 | American Express Travel Related Services Company, Inc. | User experience on mobile phone |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102326175A (en) * | 2009-02-10 | 2012-01-18 | 4361423加拿大有限公司 | Be used to use communication facilities to carry out the apparatus and method of business transaction |
| CN203522856U (en) * | 2013-09-26 | 2014-04-02 | 深圳市瑞柏泰电子有限公司 | DTMF voice telecommunication device for financial POS system |
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