CN2247909Y - Microcomputerized telephone administrative processor - Google Patents

Abstract

The utility model relates to a telephone manager which is characterized in that the telephone manager is composed of a single chip computer, a power supply, a line servo circuit, an alarm circuit and an EEPROM, wherein, the current supply and the line servo circuit are used for acquiring working current from telephone lines for system usage. Control signals generated by the single chip computer are used for locking and releasing the telephone lines. A pulse-detecting circuit and an audio demoding circuit are used for acquiring pulse and audio signals from the circuits. The EEPROM is used for storing various set information. The utility model overcomes the problems of the existing telephone manager, such as single function, dumb operation, etc., and is widely suitable for managing domestic telephones and office telephones.

Description

Microcomputer phone manager

The utility model relates to a kind of telephone supervisor, the microcomputer phone manager that particularly adopts microcomputer that phone is managed.

Because the development of communication career, the popularity rate of phone is also more and more higher, anti-key line device of polytype phone and telephone cipher lock arise at the historic moment, but various in the market these type of devices all exist function singleness, the operation underaction, problems such as the telephone number that can limit is few, pull out device as a kind of phone limit that is called " person who can hear voices a long way off " that Shuande, Guangdong produces, the anti-key line function that does not possess phone, and only can limit and pull out telephone number fixing below 10, must set the telephone number that limit is pulled out, complex operation by the position that plucking number sign switch is set during operation; Simultaneously, the thief-proof line device of various phones does not in the market possess the function of telephone cipher lock again.

The purpose of this utility model is to propose a kind of microcomputer that adopts not only to be had thief-proof line function but also has the coded lock function what phone managed, and the telephone office that can limit is to many telephone supervisors.

Realize that basic scheme of the present utility model is: be core with the single-chip microcomputer, various passwords and setting special number and required various information all deposited in the memory (EEPROM) of electric erasable by working procedure.Simultaneously, in circuit, also be provided with pulse detection and audio decoding circuit.Power supply by design and circuit servophone provide power supply for pulse detection, audio decoder and single-chip microcomputer and realize the locking and the release of telephone line.At work, when off-hook, power supply and circuit servo circuit can obtain 4 to 5mA operating current from telephone line, when on-hook, only obtain the keep electric current of the electric current of 3 μ A as single-chip microcomputer from telephone line.The operation principle of this utility model is at first to finish wireline inspection by pulse detection and audio decoding circuit, and with detected signal input single-chip microcomputer, do not judge whether to beat circuit steathily into disabled user's doubling by having fixed program in advance; If disabled user's doubling telephoning illegally or under the situation that coded lock is closed, dialed predefined special number, then sound the alarm and pin circuit by power supply and circuit servo circuit by the Single-chip Controlling warning circuit.

Owing to adopt the power supply and the circuit servo circuit of unique design effectively audio detection, audio decoding circuit and single-chip microcomputer to be combined, make the utility model not only have thief-proof line function, and has a function of coded lock, problems such as thief-proof line device of the phone of being sold in the market and product function are single have been overcome, and manyfold has improved to the product that number ratio is present in its telephone office of limiting, come complete operation by telephone key-press, make the utility model more flexibly, conveniently.

Below in conjunction with accompanying drawing the utility model is done further to describe.

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is the utility model power supply and circuit servo circuit figure.

Fig. 3 is the line map of the utility model single chip part.

Referring to Fig. 1, the utility model is raised clothes, memory and warning circuit etc. by pulse detection, audio decoder, single-chip microcomputer, power supply and circuit and is partly constituted.The pulse detection module is by the rectifier bridge of series connection, and devices such as photoelectricity coupling device and auxiliary resistance, electric capacity constitute, and when dialing the pulse number, because the break-make of line current, can detect the pulse consistent with the number of dialing at the output of photoelectrical coupler.The audio detection module is made of dual-tone dialing detector (as MT8870) and peripheral circuit thereof.When the user transfered dual-tone dialing, the output state of audio detection chip can take place by 0 to 1 variation, and its decoding output presents the number of being dialed simultaneously, its decoding output can be received by single-chip microcomputer.EEPROM is the serial storage of online electric erasable, as AT24C01 of atmel corp etc.Warning circuit is by signal drive circuit, and the news Chinese percussion instrument constitutes, and signal drive circuit amplifies the alarm signal of single-chip microcomputer output, drives the news Chinese percussion instrument, sends alarm sound.The telephone wire lambda line is connected in series mutually with the pulse detection module, its output bonding method user's telephone set, pulse detection module decoding output links to each other with the single-chip microcomputer input, the audio detection module is attempted by on the lambda line, its decoding output links to each other with the single-chip microcomputer input, power supply and circuit servo circuit and lambda line also connect, the working power of its output supply audio frequency detection module and single-chip microcomputer.Password and special number of will be provided with and required various information all are stored among the EEPROM, during work, read or write these information, to finish various functions by single-chip microcomputer.Pulse-detecting circuit detects the dial pulsing of telephone line, and single-chip microcomputer is sent in pulse, by single-chip microcomputer dial pulsing is deciphered, and then is detected the pulse dialing; The audio detection circuit is deciphered the audio frequency dialing on the telephone line, and the result that will decipher sends into single-chip microcomputer, and single-chip microcomputer is handled by software according to the signal that detects then, if the user has dialed confined number, just starts warning circuit.Power supply and circuit servo circuit are mainly single-chip microcomputer and working power are provided and can or discharge speech channel by the Single-chip Controlling locking.

Referring to Fig. 2, Fig. 3, P ₁, P ₂Go into end, BG for telephone wire ₁, BG ₂And R ₁Constitute current source.Power supply and circuit servo circuit are formed BG by triode and peripheral cell resistance, electric capacity, diode, voltage-stabiliser tube ₃Base stage meet the output signal W of single-chip microcomputer _k, BG ₅Base stage connect the control signal of single-chip microcomputer, BG ₄Finish the locking and the release of circuit.During hook state, by the RA of single-chip microcomputer ₁End output signal W _kBe low level, BG ₃Not conducting, current source is not then worked, single-chip microcomputer U ₁Obtain the electric current of keeping of 3 μ A from telephone line; When receiver off-book, W _kThe output high level, BG ₃Conducting, current source work, diode D5 conducting, the working power of feed system 4～5mA.When the user calls, no matter using pulse mode still is that double-tone frequency mode dials, its number of dialling is by pulse dialing testing circuit or double-tone testing circuit detection frequently, and receive by single-chip microcomputer, the special office direction number storage that the restriction that the user sets is dialed is among EEPROM, during subscriber dialing, if validated user need at first be dialed password, do not survey, this systems soft ware will differentiate the number of dialing judge whether it consistent with institute's number storing among the EEPROM, if words, then determine that it is the disabled user, start alarm call, the alarm signal of the RA2 pin output 2KHZ by single-chip microcomputer is sent alarm sound; While single-chip microcomputer RA ₀The output high level, circuit is pinned in BG4, BG5 (Fig. 2) conducting, makes disabled user's operation failure.Single-chip microcomputer RA under normal circumstances ₀The pin output low level, BG ₄, BG ₅Not conducting, telephone line is in release condition, and single-chip microcomputer can adopt PIC16C54 or other model.

Claims (2)

1. microcomputer phone manager, comprise by pulse detection, audio decoding circuit constitutes, it is characterized in that, it also includes single-chip microcomputer, power supply and circuit are servo, warning circuit and EEPROM, the telephone wire lambda line is connected in series mutually with the pulse detection module, its output bonding method user's telephone set, pulse detection module decoding output links to each other with the single-chip microcomputer input, the audio detection module is attempted by on the lambda line, its decoding output links to each other with the single-chip microcomputer input, power supply and circuit servo circuit and lambda line also connect, the working power of its output supply audio frequency detection module and single-chip microcomputer, power supply and circuit are raised the clothes circuit and are obtained working power from telephone line, use for system, and by single-chip microcomputer RA ₀The control signal that end sends is finished the locking and the release of telephone line, and pulse-detecting circuit and audio decoding circuit obtain pulse and audio frequency dialing and send into unit from telephone line, and EEPROM is connected with the input and output pin of single-chip microcomputer, and warning circuit is by single-chip microcomputer RA ₀The control signal control of end output.

2. manager according to claim 1 is characterized in that described power supply and circuit servo circuit be made up of triode and peripheral cell resistance, electric capacity, diode, voltage-stabiliser tube, wherein BG ₁, BG ₂And R ₁Constitute current source, BG ₃Base stage receive the output signal W of single-chip microcomputer _k, BG ₅Base stage receive the control signal of single-chip microcomputer, BG ₄Finish the locking and the release of circuit.

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