CN2534747Y

CN2534747Y - Telephone time-meter

Info

Publication number: CN2534747Y
Application number: CN01245536U
Authority: CN
Inventors: 孟庆强
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-23
Filing date: 2001-08-23
Publication date: 2003-02-05
Anticipated expiration: 2011-08-23

Abstract

The utility model discloses a phone meter-recording device, and comprises a power circuit, a storage circuit, a ringing circuit, a caller ID detecting circuit, a micro-computer circuit, a modulation circuit, and a meter-recording communication circuit. Input ends of the ringing circuit and the caller ID detecting circuit are connected with a phone of a user at two throwing positions of a switch part respectively. The switch part can connect the input end of either the ringing circuit or the caller ID detecting circuit with an external wire of the phone. The utility model uses the prior phone network smartly to realize the transmission of the meter-reading data at the user end and the settlement data at the main meter-recording station, and smartly eliminates the conflicts between communication and phone speaking to realize the feedback of the settlement data and lay an ideal foundation for the proper and unified management of the water meter, the electricity meter and gas meter in the public services. Thus, the utility model has an ideal applicability. The product is estimated to provide a favorable market spreading prospect, after coming into market.

Description

Telephone time-meter

Technical field

The utility model relates to a kind of metering transmitting device, especially a kind ofly carries out the device of data information transfer by telephone network, belongs to communication technical field.

Background technology

The concentrated copy reading of huge numbers of families' water, electricity, gas table is present popular research topic.Understand according to the applicant, existing various centralized meter-reading system (as kilowatt-hour meter centralized meter-reading system, running water centralized meter-reading system, gas meter centralized meter-reading system, central air-conditioning centralized meter-reading system, heat energy table centralized meter-reading system) all is to adopt the pattern of step-by-step counting to carry out accumulative total, error is big, poor stability, data flow is unidirectional upwards and can not be to user's feedback checkout result.Secondly, existing various centralized meter-reading systems are managed voluntarily by industry-by-industry mostly, do things in his own way (as power supply administration's management kilowatt-hour meter collection copy, Running-water Company's management running water collection is copied, Gas Company's managing gas collection copies), construction investment repeats, serious waste of resources, inefficiency.In addition, the maintenance of centralized meter-reading system also will be a big problem, because if entire city has been set up centralized meter-reading system, go to safeguard to be unpractical by industry-by-industry oneself again.

In order to address the above problem, many people have carried out dissimilar discussions and trial to above-mentioned problem.Find that according to retrieval following patent documentation discloses and the technical scheme of transmitting meter reading data by telephone wire:

It is a kind of mainly by microprocessor, perpetual calendar initialization circuit, coding-decoding circuit, the telephone reading meter data device that the line is busy and ring detecting circuit is formed that the applying date is that 1994.12.6, application number are that 94112991.8 patent of invention " active phone automatic data logging machine " discloses, this patent adopts active call, send water, the electric consumption of accumulative total by telephone wire, have following problem in practicality: 1. bulk billing system needs powered battery in addition, poor reliability, error is big, can't steady in a long-term move; 2. when the table number of kilowatt meter reading-out system reaches tens, just be difficult to each other coordinate, it is very difficult to work, and the table number in the reality is thousands of, so this system can't move at all; 3. the clearing of main website of checking meter have ageing, need receive data within a certain period of time, and when the table number was a lot, the dialing time that the scheme of above patent application at all can't his-and-hers watches distributed and sets; 4. fail to realize both-way communication.Above factor makes this patent application fail real practicability, therefore is not generalizable.

The applying date is that 1996.10.3, application number are that 96220493.5 utility model patent " a kind of novel meter reader " discloses a kind of novel meter reader of being made up of single-chip microcomputer, RS-485 port, modulator-demodulator and power supply, this machine also can pass through telephone wire, amr message is transferred to the supervisory computer of the other end, yet the technical scheme of this patent fails to deal carefully with conflicting of communication and conversation, can't coordinate interference each other, can not pass to the user with under the meter reading data, therefore still can't drop into practical application.

In a word, understand according to the applicant, the prior art scheme practice that fails mainly contains following reason: 1. stored count error is big, and poor reliability is difficult to the formation standard, can't steady in a long-term move; 2. because conversation separates with the communication science of failing, therefore for the numerous kilowatt meter reading-out system of table number, very easily produce conflict, the telephone subscriber is difficult to accept; 3. prior art all can only be read the main website that checks meter with the usage data of water, electricity, gas, and can not be to user's feedback checkout result, and promptly data flow is unidirectional upwards, and the main website that checks meter must send someone or give the user by mailing with the premium notice list, and is very inconvenient.

Summary of the invention

In order to address the above problem, the utility model will propose a kind of Telephone time-meter that carries out data information transfer by telephone network, conflicting between this machine should be able to be dealt carefully with communication and converse, give the main website that checks meter with the transfer of data of water, electricity, gas table, and can realize the feedback of settlement data.

In order to reach goal of the invention, Telephone time-meter of the present utility model comprises power circuit, memory circuit, ring and caller ID testing circuit, microcomputer circuit, modulation-demodulation circuit, the meter reading communication circuit, described ring and caller ID testing circuit, microcomputer circuit, modulation-demodulation circuit, the meter reading communication circuit is respectively by ring and caller ID detection chip, microcomputer chip, modem chip, meter reading communication chip and correspondent peripheral circuit thereof constitute, the input of described ring and caller ID testing circuit and subscriber phone are connected on two of switching device respectively and throw the position, this switching device can link to each other with one of subscriber phone the input of ring and caller ID testing circuit with the telephone wire outside line, the signal output part of described ring and caller ID testing circuit connects the signal input part of microcomputer chip in the microcomputer circuit, the control end of disconnected switching device shifter is connected in the control output end of microcomputer chip, the external table tool of the data acquisition end of meter reading communication circuit, its data output end connects the data input pin of microcomputer chip, the data transmission terminal of the transfer of data termination modem chip of microcomputer chip.

When outside line has call signal to enter, the ring of Telephone time-meter and caller ID testing circuit detect and this signal are delivered to microcomputer judge, as this signal from the main website that checks meter, microcomputer switches by the control end control of break-make switching device shifter connects modulation-demodulation circuit, the direct-reading data that the meter reading communication circuit is collected are able to be sent to the main website that checks meter through microcomputer and modulation-demodulation circuit by outer line interface; The settlement data information of main website of perhaps will checking meter is imported into by outer line interface, and through modulation-demodulation circuit and microcomputer transmission, storage shows.This shows, the utility model can utilize the existing telephone network, realize user side meter reading data and control centre's settlement data transmission of Information, and ingenious conflicting between having solved communication and having conversed, can realize the feedback of settlement data, thereby establish ideal basic for the unified management of properly settling water, electricity, gas three tables in the government utility, have desirable exploitativeness.After estimating that this product comes out, marketing has good prospects.

Description of drawings

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

Fig. 1 is the circuit diagram of an embodiment of the utility model.

Embodiment

Telephone time-meter shown in Figure 1 is made up of power circuit A, memory circuit B, ring and caller ID testing circuit C, microcomputer circuit D, modulation-demodulation circuit E, RS485 communicating circuit F and LCD H, keyboard G etc.

Power circuit A comprises inside and outside two groups of power supplys, and interior power supply is for uses such as microcomputer circuit D, modulation-demodulation circuit E, and external power uses for RS485 communicating circuit F and by the reading plotter on checking meter.Two groups of power supplys not altogether, to guarantee safety.

Memory circuit B is made up of X25045 storage chip and peripheral circuit.This circuit not only can be stored the call number of the main website that checks meter, the settlement data of checking meter, and can also monitor the operating voltage of meter reader, produces reset signal and WDT.

Ring and caller ID testing circuit C mainly are made of HT9032 chip and peripheral circuit thereof, and DOUT signal output part 14 pin of ring and caller ID testing circuit C, RDET signal output part 12 pin, PDWN signal output part 7 pin, CDET signal output part 13 pin connect signal input part 25,26,27,28 pin of 89C51 microcomputer chip respectively.When detecting ring and caller ID, microcomputer chip is read caller ID from the DOUT signal.

Microcomputer circuit B mainly is made of microcomputer chip 89C51 and peripheral circuit thereof, realizes the control of Telephone time-meter repertoire, can adopt intermittent duty, i.e. wake up during ring, enters resting state after hours, up to be waken up next time.LCD-DISPLAY is the interface of LCD H, and this LCD is mainly used in and shows meter reading data and checkout result.Specifically, data presented and content can comprise: the peak of water meter, ammeter, gas meter, flat, paddy, various parameters such as total, and copy last month and see that number, this month copy and see number, practical number, expense, clearing account number or the like.S1-S4 is a keyboard, and it act as: 1. the order meter reader is directly read the data of being checked meter and is shown; 2. inquire about the settlement data of having received; 3. delete the data of having inquired about.Control output end 7 pin of 89C51 microcomputer chip are succeeded the control end of electrical equipment JDQ1 through amplifying triode T1.

Modulation-demodulation circuit E mainly is made of M7512B modem chip, isolating transformer TRAN1 and peripheral circuit thereof, this circuit is through relay J DQ1 outer line interface JL1 that answers the call, specifically, 3 pin of M7512B chip are through resistance R 43, connect an end of isolating transformer TRAN1 secondary again through capacitor C 2 with 2 pin, 5 pin of M7512B chip connect the earth terminal of isolating transformer TRAN1 secondary, and the former limit of isolating transformer TRAN1 is through the relay J DQ1 outer line interface JL1 that answers the call.Through the switching of relay J DQ1, can receive outside line respectively on user's the telephone set or modulation-demodulation circuit E.This relay J DQ1 is controlled by triode T1 by microcomputer.

The type of meter reading communication circuit with is had the pass by being checked meter, be RS485 communicating circuit F in the present embodiment, mainly by MAX1487 chip and photoelectric isolating device U3, U4, U5, and check meter interface JL3, JL4, JL5, JL6 formation.6,7 pin of the data acquisition end MAX1487 chip of RS485 communicating circuit F are by check meter interface JL3, JL4, external ammeter, the water meter gas meter etc. copied of JL5, JL6, and its

data output end

8,1,4,3,2,5 pin connect data input pin 22,21,25 pin of 89C51 microcomputer chip respectively through photoelectronic coupler spare U3, U4, U5.Data output end 10,11 pin of 89C51 microcomputer chip connect data input pin 11,12 pin of M7512B modem chip.

In addition, 27 pin of 89C51 microcomputer chip connect the LED3 luminous tube, and when there was the data message feedback in the main website that checks meter, this photoelectric tube was with luminous indication, so that in time observe.

The course of work of present embodiment is: when the call signal do not received from outer line interface JL1, ring and caller ID testing circuit C, microcomputer circuit D, modulation-demodulation circuit E etc. all are in resting state, relay J DQ1 is failure to actuate, telephone wire is connected on the telephone set, and the electric current of meter reader complete machine is minimum.When the call signal received from outer line interface JL1, the DOUT signal output low level of ring and caller ID testing circuit C is waken microcomputer up, and calling number is accepted and differentiated.From the main website that checks meter, then by relay J DQ1 temporarily disconnected telephone set, outside line is received modulation-demodulation circuit E by coupling transformer TRAN1 as this number, telephone line is in off hook state.In the case, the meter reader of check meter main website and user terminal carries out data communication, and the direct-reading data that RS485 communicating circuit F is collected by the interface CZ3-5 that checks meter are able to be sent to the main website that checks meter through microcomputer and modulation-demodulation circuit E by outer line interface JL1; The settlement data information of main website of perhaps will checking meter is imported into by outer line interface JL1, through modulation-demodulation circuit E and microcomputer transmission, stores the X25045 storage chip among the memory circuit B into, or is accessed by keyboard operation by the user and to show and check.If microcomputer judges that calling number is not the main website that checks meter, then relay J DQ1 is failure to actuate, and telephone line is connected to telephone set, normal talking.Above-mentioned by discriminating to calling number, realized that communication is separated from one another with conversation, do not disturb mutually.

As can be seen, present embodiment has following characteristics: 1. do not have accumulative total and check meter---and can directly read the aggregate-value of electricity, water, gas, the various table tools of wet goods, self does not add up, and does not therefore have cumulative errors; 2. can the family be elementary cell---a meter reader can directly read the aggregate-value of various table tools in the family, and delivers to the main website that checks meter, and with settlement data feedback user, communication was very convenient after the main website that checks meter calculated; 3. communication is separated from one another with conversation, does not disturb mutually; 4. meter reader is isolated with the tool photoelectricity of being checked meter, and is safe and reliable.

In addition to the implementation, the utility model can also have other variation patterns.For example, can the selective ringing mode, the definable meter reading method can increase the reception short message function on this basis for regularly making a copy for or making a copy for during communication, perhaps uses it for the household electrical appliance control such as refrigerator, the electric cooker, or the like.These are protection range of the present utility model.

Claims

1. Telephone time-meter, comprise power circuit, memory circuit, ring and caller ID testing circuit, microcomputer circuit, modulation-demodulation circuit, the meter reading communication circuit, described ring and caller ID testing circuit, microcomputer circuit, modulation-demodulation circuit, the meter reading communication circuit is respectively by ring and caller ID detection chip, microcomputer chip, modem chip, meter reading communication chip and correspondent peripheral circuit thereof constitute, it is characterized in that: the input of described ring and caller ID testing circuit and subscriber phone are connected on two of switching device respectively and throw the position, this switching device can link to each other with one of subscriber phone the input of ring and caller ID testing circuit with the telephone wire outside line, the signal output part of described ring and caller ID testing circuit connects the signal input part of microcomputer chip in the microcomputer circuit, the control end of disconnected switching device shifter is connected in the control output end of microcomputer chip, the external table tool of the data acquisition end of meter reading communication circuit, its data output end connects the data input pin of microcomputer chip, the data transmission terminal of the transfer of data termination modem chip of microcomputer chip.

2. Telephone time-meter according to claim 1, it is characterized in that: described ring and caller ID testing circuit mainly are made of HT9032 chip and peripheral circuit thereof, described microcomputer circuit mainly is made of microcomputer chip 89C51 and peripheral circuit thereof, described switching device is a relay, and signal output part 14 pin of described ring and caller ID testing circuit, 12 pin, 7 pin, 13 pin connect signal input part 25,26,27,28 pin of 89C51 microcomputer chip respectively.

3. Telephone time-meter according to claim 2, it is characterized in that: described modulation-demodulation circuit mainly is made of M7512B modem chip, isolating transformer and peripheral circuit thereof, this circuit is through relay outer line interface of answering the call, specifically, 3 pin of M7512B chip are through resistance, connect an end of isolating transformer secondary with 2 pin through electric capacity again, 5 pin of M7512B chip connect the earth terminal of isolating transformer secondary, and the former limit of isolating transformer is through the described relay outer line interface of answering the call.

4. Telephone time-meter according to claim 3, it is characterized in that: described meter reading communication circuit is the RS485 communicating circuit, mainly by MAX1487 chip and photoelectric isolating device, and the interface of checking meter constitutes, 6 of the data acquisition end MAX1487 chip of RS485 communicating circuit, 7 pin are checked meter by the interface of checking meter is external, its data output end 8,1,4,3,2,5 pin connect the data input pin 22 of 89C51 microcomputer chip respectively through photoelectronic coupler spare, 21,25 pin, the data output end 10 of 89C51 microcomputer chip, 11 pin connect the data input pin 11 of M7512B modem chip, 12 pin.