CN202617226U - Card swiping telephone - Google Patents

Abstract

The utility model relates to a card swiping telephone which comprises a casing, an exterior line port, a monitoring port, a circuit mainboard, a card swiping circuit board, a liquid crystal display circuit board and a keyboard scanning circuit board. The circuit mainboard, the card swiping circuit board, the liquid crystal display circuit board and the keyboard scanning circuit board are arranged in the casing. A microprogrammed control unit (MCU) control circuit, a sending-receiving calling circuit, a sound broadcast circuit, a monitoring circuit, an incoming calling detection circuit, an off-hook and on-hook control circuit and a dual-tone multifrequency (DTMF) signal sending circuit are arranged on the circuit mainboard. The MCU control circuit is connected with the sound broadcast circuit, the incoming calling detection circuit, the off-hook and on-hook control circuit, the DTMF signal sending circuit, the card swiping circuit board, the liquid crystal display circuit board and the keyboard scanning circuit board. The sending-receiving calling circuit is connected with the sound broadcast circuit and the monitoring circuit. The monitoring circuit is connected with the monitoring port. The sending-receiving calling circuit, the incoming calling detection circuit, the off-hook and on-hook control circuit and the DTMF signal sending circuit are connected into a public switched telephone network (PSTN) line through the exterior wire port. Users can swipe cards to call and managers can monitor calling and interpose.

Description

A kind of telephone set of swiping the card

Technical field

The utility model relates to a kind of telephone set, is a kind of telephone set of swiping the card of monitoring interface that has specifically.

Background technology

In modern times in the prison administration, let the normal and household of convict carry out telephone contact, keep good, lasting emotional affection repenting and start a new life the convict; Beginning one's life anew, it is very crucial to play a part; But also will carry out necessary control and supervision with extraneous telephone contact to the convict, prevent that convict and extraneous lawless person from getting in touch once again, this just requires the conversation to some extent control of prison officer to the convict; To dialog context real-time listening, cutoff call in case of necessity.But the general telephone set that uses only limits the conversation convict, and dialog context is not done monitoring, also have at present monitored by words, but can not be to conversation preventions of propagandaing directed to communicate, this management to the prison brings leak.

Summary of the invention

The utility model technical problem to be solved is: overcome the problem that above-mentioned existing telephone machine can not carry out effective management and control to dialog context, provide a kind of rational in infrastructure, connect reliably, the telephone set of swiping the card of monitoring interface is arranged.

The technical scheme that the utility model solves the problems of the technologies described above employing is: a kind of telephone set of swiping the card; The circuit main board, liquid crystal display circuit plate, the keyboard scanning circuit plate that comprise housing, outer line interface and be positioned at housing; It is characterized in that: it also comprises monitors interface and the circuit board of swiping the card that is positioned at housing; MCU control circuit, talking and receiving circuit, voice broadcast circuit, monitoring circuit are arranged on the said circuit main board, come power detection circuit, control dislodging machine circuit, dtmf signal transtation mission circuit; Said MCU control circuit connects the voice broadcast circuit, comes power detection circuit, controls dislodging machine circuit, dtmf signal transtation mission circuit, the circuit board of swiping the card, liquid crystal display circuit plate and keyboard scanning circuit plate through pin; Said talking and receiving circuit connects voice broadcast circuit and monitoring circuit; Monitoring circuit connect to be monitored interface, talking and receiving circuit, comes power detection circuit, control dislodging machine circuit, dtmf signal transtation mission circuit to insert the PSTN circuit through outer line interface.

As the chip of reading radio-frequency card, the SCK of chip, RSTPD, NSS, MOSI, MISO pin are connected to the control pin of MCU to the said circuit of swiping the card with chip FM1702SL.

First pin of the audio socket UA1 of said monitoring circuit is with after second pin links to each other; Receive handle and hands-free Mike's power supply MIC_VCC of place through the 20 resistance (R20); (R14) receives the 19 electric capacity (C19) through the 14 resistance; The 19 electric capacity (C19) other end is received handle and hands-free telecommunication signal input MIC_AUDIO; The three-prong of audio socket UA1 meets VSS; The 4th pin joins through the 19 resistance (R19) and first pin, and first pin of audio socket UA2 is received the input AUDIO of handle receiver SPK with after second pin links to each other through the 65 electric capacity (C65); Three-prong is received the output VIN (also being the input of hands-free amplifying circuit) of handle receiver SPK, and the 4th pin of audio socket UA2 joins through the 60 resistance (R60) and first pin.

The outside line accepted call signal is at the input AUDIO place of handle receiver; Also be input to the interface UA2 of monitoring headpone through capacitor C 65; The output of handle receiver is input to the input VIN of the hands-free amplifying circuit of phone with the output of monitoring headpone; So no matter the user uses hands-free still handle to call, and accepted call signal is all arranged in the monitoring headpone.Mike's supply power voltage MIC_VCC; For hands-free Mike, handle Mike, the external Mike UA1 that chips in voltage is provided simultaneously; The telecommunication signal that the hands-free Mike of phone, handle Mike, the external Mike UA1 that chips in send all through resistance, be capacitively coupled to send words amplifying circuit input MIC_AUDIO; Like this, so no matter the user uses hands-free still handle to call, and the signal that the external Mike who chips in sends can send in the telecommunication circuit.Thereby the monitoring that realizes external earphone, Mike with chip in function, simultaneously through residing state of hook switch and peripheral circuit, make that phone is hands-free not to be influenced with sending between the words of handle, handle state hand-free loudspeaker does not have sound; Through regulating the related device of talking and receiving circuit, make volume moderate, sound clarity is comfortable.

Against existing technologies, the utlity model has following beneficial effect: the utility model is rational in infrastructure, connects reliably, and the user just can call through the brush radio-frequency card, the supervisor can external earphone and Mike come telephone set is monitored and chipped in.Make the prison officer carry out control better, improved the efficient and the level of prison administration greatly convict's conversation.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the composition frame chart of the utility model.

Fig. 2 is a kind of external interface sketch map of the utility model.

Fig. 3 is the utility model talking and receiving circuit and monitoring circuit principle schematic.

Fig. 4 is the utility model voice broadcast circuit theory sketch map.

Fig. 5 is the utility model circuit theory sketch map of swiping the card.

Embodiment

Fig. 1 is the composition frame chart of the utility model; As can be seen from Figure 1; Circuit main board 3, liquid crystal display circuit plate 4, keyboard scanning circuit plate 5 that a kind of telephone set of swiping the card comprises housing 1, outer line interface 2 and is positioned at housing 1, it also comprises monitors interface 6 and the circuit board 7 of swiping the card that is positioned at housing 1.MCU control circuit 8, talking and receiving circuit 9, voice broadcast circuit 10, monitoring circuit 11 are arranged on the said circuit main board 3, come power detection circuit 12, control dislodging machine circuit 13, dtmf signal transtation mission circuit 14; Said MCU control circuit 8 connects voice broadcast circuit 10, comes power detection circuit 12, controls dislodging machine circuit 13, dtmf signal transtation mission circuit 14, the circuit board 7 of swiping the card, liquid crystal display circuit plate 4 and keyboard scanning circuit plate 5 through pin; Said talking and receiving circuit 9 connects voice broadcast circuit 10 and monitoring circuit 11; Monitoring circuit 11 connects monitors interfaces 6, talking and receiving circuit 9, comes power detection circuit 12, control dislodging machine circuit 13, dtmf signal transtation mission circuit 14 to insert the PSTN circuits through outer line interface 2.

Shown in Figure 2 is the external interface sketch map of a specific embodiment of the utility model, monitors interface 6 external earphone and Mikes, and outer line interface 2 connects the PSTN circuit.

Shown in Figure 3 is the talking and receiving circuit and the monitoring circuit principle schematic of the utility model.As can be seen from Figure 3; First pin of audio socket UA1 is with after second pin links to each other; Receive handle and hands-free Mike's power supply MIC_VCC of place through resistance R 20, receive capacitor C 19 through resistance R 14, capacitor C 19 other ends are received handle and hands-free telecommunication signal input MIC_AUDIO; The three-prong of audio socket UA1 meets VSS, and the 4th pin joins through the resistance R 19 and first pin.First pin of audio socket UA2 is with after second pin links to each other; Receive the input AUDIO of handle receiver SPK through capacitor C 65; Three-prong is received the output VIN (also being the input of hands-free amplifying circuit) of handle receiver SPK, and the 4th pin of audio socket UA2 joins through the resistance R 60 and first pin.

After the PSTN circuit inserted from WX1, accepted call signal finally was coupled to the base stage of triode Q16 through capacitor C 62 behind rectifier bridge, switching tube Q7 and the acoustic circuit that disappears; Collector electrode AUDIO from Q16 after Q16 amplifies exports; Accepted call signal divides two-way here, and the capacitor C 66 of leading up to is coupled to the handle receiver SPK of phone, through being input to the input VIN of the hands-free accepted call signal of phone behind the handle receiver; The interface UA2 of monitoring headpone is coupled on another road through capacitor C 65; Through also being input to the input VIN of the hands-free accepted call signal of phone behind the UA2, so no matter the user uses hands-free still handle to call, and accepted call signal is all arranged in the monitoring headpone.After outside line voltage arrives the MIC_VCC point; For hands-free Mike M1 voltage is provided through resistance R 62; For handle Mike M2 voltage is provided through resistance R 63; For the external Mike UA1 that chips in voltage is provided through resistance R 20, the telecommunication signal that the hands-free Mike M1 of phone sends is coupled to the input MIC_AUDIO that send the words amplifying circuit after resistance R 9 and capacitor C 15, and the telecommunication signal that the handle Mike M2 of phone sends is coupled to the input MIC_AUDIO that send the words amplifying circuit after resistance R 10 and capacitor C 16; The telecommunication signal that the external Mike UA1 that chips in sends also is coupled to the input MIC_AUDIO that send the words amplifying circuit after resistance R 14 and capacitor C 19; Equally, so no matter the user uses hands-free still handle to call, and the signal that the external Mike who chips in sends can send in the telecommunication circuit.Thereby the monitoring that realizes external earphone, Mike with chip in function, simultaneously through residing state of hook switch contact CH2B and peripheral circuit, make that phone is hands-free not to be influenced with sending between the words of handle, handle state hand-free loudspeaker does not have sound; Through regulating the related device of talking and receiving circuit, make volume moderate, sound clarity is comfortable.

Shown in Figure 4 is the utility model voice broadcast circuit theory sketch map.As can be seen from Figure 4; Use chip EM57300 to report voice, first pin of EM57300 meets VCC through resistance R 61, and crus secunda meets VSS through resistance R 68; And connect the negative pole of capacitor C 67; The input AUDIO of the positive pole catcher handle receiver SPK of capacitor C 67, tripod EM_SDA and the 5th pin EM_SCL connect the control pin of MCU, and the 6th pin meets VSS.

MCU makes speech chip report voice through data wire EM_SDA and the clock line EM_SCL of control speech chip U2; Voice signal is input to the AUDIO point of PAC circuit after capacitor C 67 couplings; The handle of phone and hands-freely can report voice signal; The size of resistance R 68 scalable output voice, the frequency of resistance R 61 scalable output voice.

Shown in Figure 5ly be the utility model circuit theory sketch map of swiping the card.As can be seen from Figure 5, the circuit of swiping the card uses chip FM1702SL as the chip of reading radio-frequency card, and the SCK of chip, RSTPD, NSS, MOSI, MISO pin are connected to the control pin of MCU.MCU obtains the data message of radio-frequency card through SCK, RSTPD, NSS, MOSI, the MISO pin of pilot brush the core of the card sheet U3.

The operation principle of the utility model is: MCU judges that through detecting power detection circuit 12 these off-hooks answer the call or call; Control through control dislodging machine circuit 13 and to hang up or give connection to external call; Through dtmf signal transtation mission circuit 14 telephone number is dealt into the PSTN circuit; Through voice broadcast circuit 10 voice are dealt on the talking and receiving circuit 9 and spread out of, detect the radio frequency card using informations, detect users' operation through keyboard scanning circuit plate 5 through the circuit board 7 of swiping the card; Showing through liquid crystal display circuit plate 4 that users' operation information, earphone and Mike are linked into monitors interface 6 and afterwards monitors through 11 pairs of talking and receiving circuits 9 of monitoring circuit and chip in.

The concrete course of work is following: during user's off-hook, MCU judges that through detecting power detection circuit this off-hook answers the call or call, and answering the call does not process; If make a phone call; Then MCU puts through the MUTE pin and hangs down the dialing tone that shields outside line, and the data wire EM_SDA and the clock line EM_SCL that control speech chip U2 then make speech chip report the voice that the prompting user swipes the card, and voice signal is input to the AUDIO point of talking and receiving circuit after capacitor C 67 couplings; The handle of phone and hands-freely can report voice signal; When the user swiped the card, MCU got access to the data message of radio-frequency card through SCK, RSTPD, NSS, MOSI, the MISO pin of pilot brush the core of the card sheet U3; Report the prompt for successful of swiping the card again; Through the dtmf signal transtation mission circuit number that card number and user are dialled all is dealt into the PSTN circuit then on keyboard, decontrols the MUTE pin then, connect phone after; Accepted call signal is realized monitoring through the interface UA2 that capacitor C 65 is coupled to monitoring headpone at the AUDIO point, and the telecommunication signal that external Mike sends from interface UA1 is coupled to the input MIC_AUDIO that send the words amplifying circuit and realizes chipping in after resistance R 14 and capacitor C 19.

Claims (3)

1. telephone set of swiping the card; The circuit main board, liquid crystal display circuit plate, the keyboard scanning circuit plate that comprise housing, outer line interface and be positioned at housing; It is characterized in that: it also comprises monitors interface and the circuit board of swiping the card that is positioned at housing; MCU control circuit, talking and receiving circuit, voice broadcast circuit, monitoring circuit are arranged on the said circuit main board, come power detection circuit, control dislodging machine circuit, dtmf signal transtation mission circuit; Said MCU control circuit connects the voice broadcast circuit, comes power detection circuit, controls dislodging machine circuit, dtmf signal transtation mission circuit, the circuit board of swiping the card, liquid crystal display circuit plate and keyboard scanning circuit plate through pin; Said talking and receiving circuit connects voice broadcast circuit and monitoring circuit; Monitoring circuit connect to be monitored interface, talking and receiving circuit, comes power detection circuit, control dislodging machine circuit, dtmf signal transtation mission circuit to insert the PSTN circuit through outer line interface.

2. the telephone set of swiping the card according to claim 1, it is characterized in that the said circuit of swiping the card with chip FM1702SL as the chip of reading radio-frequency card, the SCK of chip, RSTPD, NSS, MOSI, MISO pin are connected to the control pin of MCU.

3. the telephone set of swiping the card according to claim 1; First pin of audio socket UA1 that it is characterized in that said monitoring circuit is with after second pin links to each other; Receive handle and hands-free Mike's power supply MIC_VCC of place through the 20 resistance (R20); (R14) receives the 19 electric capacity (C19) through the 14 resistance; The 19 electric capacity (C19) other end is received handle and hands-free telecommunication signal input MIC_AUDIO, and the three-prong of audio socket UA1 meets VSS, and the 4th pin joins through the 19 resistance (R19) and first pin; First pin of audio socket UA2 is with after second pin links to each other; Receive the input AUDIO of handle receiver SPK through the 65 electric capacity (C65), three-prong is received the output VIN of handle receiver SPK, and the 4th pin of audio socket UA2 joins through the 60 resistance (R60) and first pin.

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