CN2775959Y

CN2775959Y - Personal communication intelligent identifying device

Info

Publication number: CN2775959Y
Application number: CN 200420109258
Authority: CN
Inventors: 张维
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-30
Filing date: 2004-11-30
Publication date: 2006-04-26
Anticipated expiration: 2014-11-30

Abstract

The utility model relates to the communication field, particularly a personal communication intelligent identifying device which comprises a power supply, a keyboard, a display, an MCU, an external telephone line inlet, a local telephone line outlet, a ringing detecting device, an FSK demodulate number detecting device and an on-hook/off-hook control device, wherein the keyboard, the display, the ringing detecting device, the FSK demodulate number detecting device and the on-hook/off-hook control device are connected with the MCU respectively via lines. The utility model can in real time monitor FSK modulation signals composed of ringing signals transmitted by an exchanger in a telephone line and a calling party's telephone number, and do corresponding actions of intercepting or straightening through. The utility model has the advantages of compact structure, low cost and easy commercialization.

Description

The personal communication intelligent identification device

Technical field

The utility model relates to communication field, relates to a kind of personal communication automatic acquisition system parts specifically.

Background technology

Present social communication telephone is universal unusually, but when paying telephone charges in daily life, can hear whether a lot of people's consultings can limit vicious disturbance call, and telecommunication department can not provide this class service.Along with the develop rapidly of communication industry, personal communication is more and more important in daily life, and people more and more rely on the terminal of communication, and for example telephone set comes transmission information.This has just formed a kind of contradiction, and the harassing call of some malice rings all night and do not stop, and is afraid of that again important number do not come in if pull out whole telephone wire; A kind of situation in addition is that some business people itself have a lot of business telephones, also can cause phone to ring all night and not stop, if want evening to sleep well but do not want to miss some specific phones, for example relatives and friends' phone.This is an awkward selection really.And do not see relevant cheap and good-quality communication component in the market to address the above problem easily.

Summary of the invention

The purpose of this utility model provides a kind of personal communication automatic acquisition system parts, i.e. personal communication intelligent identification device.The utilization of this device can be protected individual's living space effectively.

The technical solution of the utility model is: a kind of personal communication intelligent identification device, comprise power supply, keyboard, display, MCU, external call incoming line and local call line outlet, in addition, it also comprises ringtone detection device, FSK demodulation number checkout gear and dislodging machine control device, and described keyboard, display, ringtone detection device, FSK demodulation number checkout gear, dislodging machine control device link to each other with MCU by circuit respectively.

Above-mentioned personal communication intelligent identification device, it is further characterized in that keyboard adopts the quadruple linkage design, four keys are realized decimal numeral input, browse, are increased, deletion and editor's etc. operation; Display adopts LCD, two row dot pattern display modes; External call incoming line and local call line outlet include telephone line interface circuit, are used to guarantee that the polarity of back circuit is consistent; Dislodging machine control device is to be controlled or adopted relay to control by the constant-current source that triode constitutes.

Above-mentioned personal communication intelligent identification device, it is further characterized in that device also comprises a toggle switch, with realization the telephone number of MCU storage is tackled or is led directly to.

Store 20 blacklists and 20 white lists among the MCU of the utility model personal communication intelligent identification device.When switch was in the blacklist state, the number of all blacklists all will be hung up automatically, and other incoming call can both normally pass through.When switch is in the white list state, have only the electric energy that comes on the white list to pass through the full conductively-closed of other phone.The user when at night switch being pushed white list, only wants that the incoming call that connects just can lead directly to, other conductively-closeds of all phones when adopting the utility model.So not only protected sleep but also timely acquired information, just can sleep without any anxiety.

The personal communication intelligent identification device is kept malice or harassing and wrecking blacklist phone outside of the door exactly, or only taps into the friendly phone of white list.Local call mainly is to rely on calling party's telephone number to judge whether he is malice harassing and wrecking or friendly phone, therefore, local call must at first be opened the caller identification business, like this, when phone is made, switch at first can be sent calling party's telephone number here, this system compares this number and the telephone number of establishing in advance, be listed on the blacklist if find this number, then tackled this phone, and the operation of simulation dislodging machine, cut off this conversation, if this number is a normal telephone, then system is straight-through, guarantees normal talking.In like manner, perhaps only tap into the white list phone, and cut off other all incoming calls.

This apparatus structure compactness can adopt the universal integrated circuit design, makes system easier to be integrated, especially can be integrated in the telephone set, and as a commodity selling, it is cheap, is very easy to commercialization.

Description of drawings

Fig. 1 is system signal path figure of the present utility model;

Fig. 2 is a structured flowchart of the present utility model;

Fig. 3 is the telephone line interface circuit figure that adopts among the utility model embodiment;

Fig. 4 is circuit theory diagrams among the utility model embodiment;

Embodiment

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail as follows:

By top analysis as can be known, the utility model need be realized following a few partial function: ring detects; The calling party phone number detects and the fsk signal demodulation; Simulation dislodging machine operation; The setting of interception number, storage, demonstration etc.; Man-machine interface.

In the utility model conceptual design, consideration connects together pstn fire wall and local call, thereby can accomplish the fsk modulated signal that switch is sent in the real-time listening telephone wire bell signal and calling party phone number are formed, and make corresponding action (interception is still straight-through).Specific implementation is that the external call line at first enters the personal communication intelligent identification device, tells one the tunnel again from this system and gives local call, as shown in Figure 1.

Embodiment 1:

The whole apparatus structure block diagram of the utility model as shown in Figure 2.Circuit theory diagrams are seen Fig. 4.

The selection of microprocessor MCU: the system that considers needs and interfaces such as keyboard, LCD, also need information long preservation simultaneously to being provided with, therefore adopt the AT89S8252 of ATMEL, with the 80C51 compatibility, but its online programming, the flash memory that has watchdog circuit and 8k byte, 2k byte EEPROM can be used to the information of storage system setting and also can not lose when system's power down in addition simultaneously, and just price is expensive slightly.

Telephone line interface circuit: referring to Fig. 3, resistance is the piezo-resistance of 150V, is used for anti-thunderbolt.4 diodes are formed a bridge, are used to guarantee that the polarity of back circuit is consistent.

Ring and fsk signal demodulator circuit: before the following ringing-current of telephone line, telephone line is provided the direct voltage of about 48V by telephone exchange.When the user was called out, telephone exchange was sent ringing signal.Bell signal is 25 ± 3 volts a sine wave, and humorous bell distortion is not more than 10%, voltage effective value 90 ± 15V.Ring was the cycle with 5 seconds, sent in promptly 1 second, and 4 seconds disconnected.

The caller identification business, also making caller identification information transmit CID (Calling Identity Delivery) is a kind of service business that provides to called subscriber's phone.Its method is that the switch of making a start sends information such as calling number to terminaling exchange, and terminaling exchange sends information to called user terminal again.Dialing number information often adopts frequency shift keying (FSK) mode (in China), transmits under Called Onhook (On_Hook) or off-hook communications status.Transfer approach is that terminaling exchange is passed to the called subscriber with caller information during the ring first time and ring for the second time under the hook state.To this existing corresponding protocol standard, for example: Bell 202, CCITT be baud rate fsk data transmission standard V.231200.The data format that caller information transmits has 2 kinds: forms data message format (Single Data MessageFormat) and complex data message format (Multple Data Message Format).

In the native system design, ring and fsk signal demodulator circuit adopt special chip HT9032 to finish.

HT9032 satisfies V.23 1200 baud rate fsk data transmission standards of Bell 202, CCITT, and bell flowing detecting circuit is contained in its inside, and ringing-current detects output signal (low level pulse) and receives on the MCU I/O pin.HT9032 is logical one=1200 ± 12Hz, logical zero=2200 ± 22Hz, transmission rate that the serial interface that the fsk signal of 1200bps is demodulated to the asynchronous serial binary data and inputs to MCU closes up.

The method that the physical circuit connection provides in can the Datasheet according to Holtek company designs.

Dislodging machine control device adopts relay control: no matter according to any telephone set of relative national standards regulation, the D.C. resistance of off hook state is answered≤300 Ω, has the off hook state D.C. resistance of the electronic telephone of " R " key to answer≤350 Ω.Under hook state, its leakage current≤5 μ A.When user's off-hook, telephone set connects the load of about 300 Ω by hook switch, makes whole telephone wire loop stream cross the electric current of about 30mA.Switch just stops the ringing-current transmission after detecting this electric current, and line voltage distribution is become tens volts direct current, complete connection.Referring to Fig. 4.According to the relevant technologies index, mainly by the switch of a transistor switching circuit control relay, relay control inserts the 200 Ω resistance at telephone wire two ends to simulation dislodging machine circuit.Dislodging machine signaling is realized by making the TXD/P3.1 mouth become high level by single-chip microcomputer.Through two reverser driven for emitting lights diode D1 indication off-hooks, change the base voltage of triode T1 simultaneously, make T1 be in conducting state, thereby open relay J 1, J1 makes resistance R 3 insert the telephone wire two ends.Because the resistance of R3 is 200 Ω, make loop current become big, control circuit sends the signal of simulating off-hook to switch, and the switch responds off hook signal is finished telephone line and is connected.Entire circuit is finished automatic simulation off-hook process.

Keyboard interface: keyboard adopts the design of 4 keys, adopts the optimization keyboard Designing, realizes with four multiplexing keys.Four keys can be realized decimal numeral input, browse, increase, the operation of deletion, editor etc., and this method is simple and reliable.

Display design: display adopts LCD, 2 row dot pattern display modes.

Power supply design: adopt the power supply of 5V power supply, can copy programmable device, buy the pressurizer of a 8V, secondary voltage stabilizing in printed board again.

Embodiment 2:

The present embodiment structural arrangements is basic identical with embodiment 1, but the constant-current source that the machine control device of wherein seting out adopts triode to constitute is controlled: breadboardin dislodging machine is realized by controlling a current source break-make.Switch is judged user's dislodging machine state by the direct current on the circuit.Under hook state, the direct current on the circuit is 0; Under off hook state, the direct current on the circuit is 18～55mA, if electric current exceeds this scope, thinks that then local loop is out of order.Single-chip microcomputer comes electric current in the control circuit, the action of simulation dislodging machine by the T1 break-make of port I/O1 control triode.When I/O1 was low level, T1 ended, and current ratio is less, was in hook state; When I/O2 is a high level, the T1 conducting, the current source that this moment, T1 and T2 formed will provide the electric current about 30mA, be equivalent to the phone off-hook, and exchange opportunity is connected speech channel.In addition, constant-current source can guarantee that circuit has less dc impedance (＜300 Ω) and big AC impedance (＞600 Ω).

Because T1 ends when detecting bell signal, under the clamping down on of voltage stabilizing didoe, the voltage on the circuit nearly all is added in the collector and emitter two ends of T1, and this moment, voltage was up to more than 100 volts.So triode need select one withstand voltage than higher triode, withstand voltage proper in the 150V left and right sides.It should be noted that the output current of employed single-chip processor i/o pin, the base stage operating current of T1 is approximately 2～3mA, and the output current of single-chip microcomputer has only 80 μ A, can't drive triode, so need drive circuit.

Most preferred embodiment of the present utility model is illustrated, and the various variations or the remodeling of being made by those of ordinary skills all belong to protection range of the present utility model.

Claims

1, a kind of personal communication intelligent identification device, comprise power supply, keyboard, display, MCU, external call incoming line and local call line outlet, it is characterized in that it also comprises ringtone detection device, FSK demodulation number checkout gear and dislodging machine control device, described keyboard, display, ringtone detection device, FSK demodulation number checkout gear, dislodging machine control device link to each other with MCU by circuit respectively.

2, personal communication intelligent identification device according to claim 1 is characterized in that described keyboard adopts the quadruple linkage design.

3, personal communication intelligent identification device according to claim 1 is characterized in that described display adopts LCD.

4, personal communication intelligent identification device according to claim 1 is characterized in that described external call incoming line and local call line outlet comprise telephone line interface circuit.

5,, it is characterized in that described dislodging machine control device is the constant-current source control device that is made of triode, or adopt relay control device according to claim 1,2,3 or 4 described personal communication intelligent identification devices.

6, personal communication intelligent identification device according to claim 5 is characterized in that it also comprises a toggle switch.