CN2521843Y

CN2521843Y - Domestic intelligent data communication terminal apparatus

Info

Publication number: CN2521843Y
Application number: CN 02218410
Authority: CN
Inventors: 周凡; 杨钧; 邹小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-18
Filing date: 2002-01-18
Publication date: 2002-11-20
Anticipated expiration: 2012-01-18

Abstract

The utility model relates to a household intelligent data communication terminal device, which is used together with a phone. The utility model detects an incoming call signal by using the phone provided with the function of caller ID display and outputs the incoming call signal to a micro processor. The micro processor is connected with a modem, and the modem is connected with the incoming call signal. A single-way diode is connected to an incoming call signal circuit. Moreover, a normal-opening contact of a relay is connected in parallel on the single-way diode. The micro processor controls the relay. The utility model settles the defect that public service agencies collect the data of water, electricity and gas and notifies users to pay the fees in a manual way, and other defects, so as to realize the long-distance meter recording and develop the function of caller ID display. Thus, the public service agencies contact with the users directly, and the users do not need other devices, so the cost is low.

Description

The domestic intelligent data communication terminal

Technical field

The utility model relates to a kind of communication terminal, particularly a kind of domestic intelligent data communication terminal that is used with telephone set.

Background technology

Before the utility model is made, public functions department comprises that getting in touch of public utilities department such as department such as public security, fire-fighting, first aid and running water, electric power, Gas Company and millions upon millions of residents remains and is made a phone call to report to the police, reported for repairment by the resident etc. in the urbanization management, public administration department sends the people to solve problem then, public functions department is very passive like this, and bothers very much.People have thought that some ways attempt to address this problem, as adopting power line carrier transmission remote meter reading data or cable TV network.Power line carrier transmission remote meter reading is to adopt the power line transmission data, with making a copy of automatically of the gas meter of realizing the user, water meter, ammeter reading, and has network savvy.Power line communication is that data-modulated is become carrier signal or spread-spectrum signal, is coupled on 220 volts or other alterating and direct current line of forces by coupler again.The benefit of doing like this is to have utilized existing power line to carry out data communication, has reduced the loaded down with trivial details wiring that runs in the communication.But, communicating by letter on power line, it is bigger to exist the intermittent noise ratio of power line, and the start and stop of some electrical equipment, operation all can produce bigger noise, and signal attenuation is very fast, line impedance often fluctuates, and this mode and means all exist technical sophistication, performance difficulty.This just makes the realization of power communication very difficult.Cable TV network also exists a same above-mentioned difficult problem.LAN (Local Area Network) exists defectives such as wiring is wide, investment is big especially.It is big that low-voltage power user automatic meter reading system also exists investment, the defectives such as complicated and time-consuming expense manpower of checking meter.Therefore, said method all is difficult to promote the use of.

Summary of the invention

The utility model purpose just is to overcome above-mentioned defective, designs a kind of domestic intelligent data communication terminal of simple and technology maturation.

The technical solution of the utility model is: its major technique is characterised in that the ring detecting circuit input fetches the signal of telecommunication, ring detecting circuit output connects microprocessor, modulator-demodulator connects microprocessor, one termination incoming telephone signal of modulator-demodulator, connect a unilateral diode, a relay normally open contact in parallel on this diode on incoming telephone signal after modulator-demodulator and incoming telephone signal tie point and the incoming telephone signal circuit between telephone set is connected.

Its further technical characterictic is that data interface circuit connects microprocessor.

Advantage of the present utility model and effect are and can realize contacting directly of public functions department and huge numbers of families easily by telephone network, the user need not increase other complex apparatus, the caller identification signal that has made full use of phone is ask the location, thereby carry out bidirectional data transfers easily, save a large amount of human and material resources, of many uses, cost is low, simple and convenient user operation can form new industry, and social benefit is good.

Description of drawings

Fig. 1-the utility model block diagram.

Part ring detecting circuit, modulator-demodulator and microprocessor figure among Fig. 2-Fig. 1.

Ring detecting circuit figure among Fig. 3-Fig. 1.

Embodiment

As shown in Figure 1: ring detecting circuit 1 input fetches signal of telecommunication TIP, RING end (coming from telecommunication bureau's switch), ring detecting circuit 1 exports the input of microprocessor 2 to, one termination incoming telephone signal of modulator-demodulator 3, its signal is held from TIP, the RING of telecommunication bureau's switch equally, modulator-demodulator 3 another termination microprocessor 2 one ends, data interface circuit 9 connects microprocessor 2 other ends; Be connected a unilateral diode 6 on the incoming telephone signal circuit between incoming telephone signal after modulator-demodulator 3 and incoming telephone signal tie point and the telephone set 5, relay normally open contact 7-1 in parallel on this unilateral diode 6, keyboard-display circuit 11 connects microprocessor 2, and power circuit 8 provides DC power supply for each circuit.

During work, as Fig. 1, Fig. 2, shown in Figure 3:

At first, telephone set 5 is telephone sets of opening incoming call display function; Host computer is that the caller machine is called and gone into ring detecting circuit 1 by incoming telephone signal TIP and RING termination that telecommunication bureau's switch transports, and the resistance R 1 of its input is 600 Europe, the realization high voltage is isolated, the difference-mode input that suppresses common mode disturbances is provided, incoming telephone signal is applied on the unilateral diode 6 simultaneously, because this unilateral diode 6 is that direct current signal and relay normally open contact 7-1 often open with the ringing signal rectification of incoming telephone signal, and make the telephone set 5 can not ring, i.e. ringing tone telephone set 5 No ringings for the first time, ring detecting circuit 1 then detects incoming telephone signal, be that high pressure ring ringing signal is through C4, R11 and light lotus root U1 output low-voltage signal, this low-voltage signal is delivered to the RD of microprocessor 2, the RELAY end detects.

When incoming telephone signal is the plain old telephone number, 7 conductings of microprocessor 2 control relays, relay normally open contact 7-1 closure, unilateral diode 6 is by by-path turn-on, telephone set 5 circuits are connected, this process is that promptly telephone set 5 is sounded since the ringing tone ring second time at the first time of ringing tone and for the second time between the ringing tone.

When the transmission incoming telephone signal is FSK when being frequency shift keying signal, protection relay 10 conductings, its normally open contact 10-1 closure provides the terminal resistance in 600 Europe by R1, C1 for the incoming telephone signal circuit, with telecommunication bureau's switch coupling, protection C1; Modulator-demodulator 3 changes it into P1.0, P1.1, P1.2 pin that digital signal is transported to microprocessor 2, judges by microprocessor 2 whether this host computer number is the special service number; If host computer is a calling number is the special service number, the special number of copying meter reading as Running-water Company is 666666, with be stored in microprocessor 2 in advance in memory in special service number when identical, then the P1.5 pin of microprocessor 2 sends the RTS signal to modulator-demodulator 3, control modulator-demodulator 3 off-hooks, relay 7 continues to keep not on-state, relay normally open contact 7-1 continues to keep normally open, unilateral diode 6 is not by bypass, 5 of telephone sets are No ringing all the time, a pin P1.4 of microprocessor 2 detects the DCD signal of modulator-demodulator 3 then, after detecting carrier signal, can carry out normal data communication exchange with host computer, receive the demand note mono signal; If the reading of water, electricity, gas is inserted data interface circuit 9 by water meter, ammeter, gas meter, data interface circuit 9 is under the instruction of microprocessor 2, these data are carried out data by microprocessor 2 and host computer to be exchanged, send the water, electricity, gas reading to host computer, after the data communication exchange finishes, the communication data switching task is finished in modulator-demodulator 3 on-hooks one time.Microprocessor 2 shows data, the account payable of checking meter by keyboard-display circuit 11.

If fire alarm takes place or needs first aid in the user of telephone set 5, then can be by the corresponding public functions of the utility model active call department, promptly key in special service phone number by keyboard-display circuit 11, and initiatively send related data, as the machine master name of this telephone number, address or the like (these data are stored in 2 li of microprocessors in advance), communication mode is same as described above, is in time checked, is handled by these public functions departments after receiving these data.

Data interface circuit 9 also can be expanded sensors such as connecting fire alarm, coal gas, makes it and can report to the police automatically.

The integrated package model of ring detecting circuit 1 of the present utility model is MT8841, and the model of microprocessor 2 is AT89C2051, and the model of light lotus root U1 is 4N136.

Claims

1. domestic intelligent data communication terminal, it is characterized in that coming the power detection circuit input to fetch the signal of telecommunication, come power detection circuit output to connect microprocessor, modulator-demodulator connects microprocessor, one termination incoming telephone signal of modulator-demodulator, connect a unilateral diode, a relay normally open contact in parallel on this diode on incoming telephone signal after modulator-demodulator and incoming telephone signal tie point and the incoming telephone signal circuit between telephone set is connected.

2. domestic intelligent data communication terminal according to claim 1 is characterized in that microprocessor connects keyboard-display circuit.

3. domestic intelligent data communication terminal according to claim 1 and 2 is characterized in that data interface circuit connects microprocessor.