CN2358653Y - Civil water, electricity, gas three-purpose meter intelligence integrated metering installation - Google Patents

Abstract

The utility model relates to an intelligent integrated metering device for civil water meters, electricity meters and gas meters. The utility model is composed of a set of water meters, electricity meters and gas meters owned by every householder, a single chip computer recording device and a central querying machine. A single chip computer is taken as a core, and modern microcomputer metering and charging management is used for replacing traditional artificial charging by entering rooms for checking meters; therefore, the utility model has the advantages of time saving, labour saving, high work efficiency and high safety, and the utility model is convenient for common people. Therefore, the utility model is the development direction of civil enterprise management in modernization cities.

Description

Civilian water, electricity, gas three table intelligent comprehensive metering devices

The utility model relates to civilian three tables of a clock, i.e. the intelligent comprehensive metering device of water meter, ammeter and gas meter, flow meter is the sophisticated equipment that realizes unified computer metering toll administration to urbanite water consumption, electricity consumption, with gas.

At present, the employed three table overwhelming majority of China's residential building are the water, electricity, gas consumptions that directly shows the resident with dial plate, and taking monthly registers one's residence tables look-up, and reenters the labor management way of family charge.Advantage is stem-winder pointing accuracy height, and is reliable and stable, but also exist serious weak point, the one, and manually tabling look-up wastes time and energy, make mistakes easily, the 2nd, influence the resident and have a rest, enter the room to commit a crime sometimes even to the unprincipled fellow and cause opportunity.

It is the civilian three table intelligent comprehensive metering devices that core is formed with the single-chip microcomputer that the purpose of this utility model is to provide a kind of, replaces the management that manually looks meter and charge that falls behind with modern computer metering management.

The electric three table intelligent comprehensive metering devices of domestic use of water of the present utility model comprise the water meter of each household one cover, ammeter and gas meter, flow meter and single-chip microcomputer tape deck and central enquiry machine, described water meter, the transducer that mechanical corner can be transformed to electric impulse signal all is housed on ammeter and the gas meter, flow meter, described single-chip microcomputer tape deck comprises shaping circuit, decade counter, latch, three-state driver, single-chip microcomputer and corresponding control logic circuit, the electric impulse signal of being sent here by transducer is sent to the input of decade counter after the shaping circuit shaping, the three-state output of decade counter is directly hung to the P of single-chip microcomputer _oOn the mouth, and its carry signal is sent to an input of many inputs " NOR gate " and an input of latch respectively, the input signal of latch is sent to the input of three-state driver, its output then connects and is suspended on the data/address bus, and the output of " NOR gate " then directly links to each other with the INTO end of single-chip microcomputer.Like this, the whichever decade counter produces carry, all will cause negative pulse of " NOR gate " output, this pulse is sent to single-chip microcomputer through the INTO pin and is interrupted application, in case application is interrupted in the single-chip microcomputer response, control logic circuit will be by certain timing sequence generating control signal, so that the signal of latch is got on the data/address bus through three-state driver, so single-chip microcomputer just can carry out water for each user like clockwork according to the signal content on the data/address bus,, the accumulative total of gas consumption, described central enquiry machine comprises single-chip microcomputer, single-chip microcomputer, keyboard, display, printer and corresponding control logic circuit, described single-chip microcomputer is connected by interface chip realization and keyboard and display, described keyboard comprises 0-9 10 numeric keys and function key, central authorities' enquiry machine and each single-chip microcomputer tape deck adopt the multilevel serial communication mode to carry out information exchange, that is to say, each single-chip microcomputer tape deck can pass to central enquiry machine with the information that user three shows by the RS-232 serial communication mode, and central enquiry machine also can be realized the information and executing initial value design to each family resident three tables by means of the operation of keyboard, numerical value is revised, inquiry and demonstration, clearing printing etc.Scale according to the residential block can be divided into it some sub-districts, and each sub-district is equipped with a cover single-chip microcomputer tape deck, and the single-chip microcomputer tape deck of each sub-district is all with serial communication mode and a central enquiry machine contact.

The utility model has the advantages that the computer metering charge with the advanced person replaces backward manually registering one's residence to look meter and charge, it is the developing direction of the civilian career management of modern city, save manpower, improve work efficiency, the convenient common people, water meter, ammeter and gas meter, flow meter have machinery and two kinds of functions of electronics metering simultaneously, and be safe and reliable.

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is a single-chip microcomputer tape deck theory diagram of the present utility model.

Fig. 3 is single-chip microcomputer tape deck circuit theory diagrams of the present utility model.

Fig. 4 is central enquiry machine circuit theory diagrams of the present utility model.

Fig. 5 is a serial communication circuit schematic diagram of the present utility model.

Embodiment: referring to Fig. 1-5, civilian water, electricity, gas three table intelligent comprehensive metering devices of the present utility model comprise water meter 1, ammeter 2, gas meter, flow meter 3, single-chip microcomputer tape deck 4 as shown in Figure 1, described water meter 1 is a rotary wind type, ammeter 2 and gas meter, flow meter 3 are all with the corner metered amount, on each table the transducer that is made of permanent magnet and induction installation is housed all, transducer utilizes magnetic induction principle mechanical corner can be transformed into electric impulse signal.Described single-chip microcomputer tape deck 4 comprises shaping circuit, binary-coded decimal counter CC4510, latch 74HC573, three-state driver 74HC541 and single-chip microcomputer 80C31 and corresponding control logic circuit shown in Fig. 2,3.Be sent to the input of driver 74HC541 from the electric impulse signal of user's three tables, utilize 74HC541 Schmidt trigger characteristic to carry out shaping, be sent to the clock input pin of binary-coded decimal counter CC4510 respectively through each road pulse signal of shaping, and the output of each CC4510 connects the input pin toward three-state driver 74HC541, and its output pin then connects the P toward single-chip microcomputer 80C31 _oMouthful, the carry signal of each sheet counter CC4510 is sent to the input pin of eight input NOR gate CC4078 respectively, when the output pin of CC4078 is connected toward single-chip microcomputer 80C31INTO pin, connected (11) pin again after anti-phase toward eight D-latch 74HC573, the carry pin of each counter CC4510 also connects the input toward eight ternary D-latch 74HC573 respectively, and its ternary output pin is connected toward data/address bus P _oMouthful, the control logic circuit of single-chip microcomputer tape deck 4 is made up of a slice 3-8 decoder 74HC138 and a slice dual input or a door CC4071.When any one counter CC4510 produces carry signal, the output of NOR gate CC4078 just can produce a negative pulse, this signal is as the latch signal of 74HC573 and the carry of each counter is latched, meanwhile, single-chip microcomputer will respond interruption and enter break in service, at the beginning of the break in service, single-chip microcomputer should produce a control signal output of latch is got on the data/address bus by the output pin of OR circuit CC4071, single-chip microcomputer can judge whereby that the counter of which passage has produced carry, and add up automatically for this passage, this moment is if the aggregate-value of single-chip microcomputer is N, the value of corresponding counts device is α, and then this passage actual amount Q is Q=10N+ α.When needs inquire about a certain counter as a result the time, control logic can make the pin of CC4071 become low level, so the output of this counter is just got on the data/address bus, reads for single-chip microcomputer.Described central enquiry machine 5 comprises keyboard 8, display 6, printer 7 and single-chip microcomputer 80C31 and control logic circuit 9 as shown in Figure 4, and single-chip microcomputer 80C31 is by the interface of a slice 8155 programmable chips realization with keyboard 8, display 6, the PA of 8155 PA mouth ₃-PA _oAlignment during as key scanning, and the PC of PC mouth ₃-PC _oLine during as key scanning, thereby the key assignments of definite 16 buttons of keyboard, button is made up of ten figure keys of 0-9 and 6 function keys.Be connected with serial communication mode between central authorities enquiry machine 5 and the single-chip microcomputer tape deck 4, as shown in Figure 5, adopt the RS-232 level, promptly+12V represents 0,-12V represents 1, use 1488 and 1489 transmitter-receivers for this reason and realized the conversion of Transistor-Transistor Logic level and RS-232 level, the input of transmitter 1488 sends pin TXD with the serial of the single-chip microcomputer of central enquiry machine 5 and directly is connected, 1488 output pin then is the RS-232 level, link to each other with 1489 inputs of receiver of single-chip microcomputer tape deck 4 through long distance communication line, 1489 output pin then is a Transistor-Transistor Logic level, links to each other with the single-chip microcomputer pin RXD of single-chip microcomputer tape deck 4.

Claims (1)

1. A kind of domestic use of water,, gas three table intelligent comprehensive metering devices, it is characterized in that comprising water meter, ammeter and gas meter, flow meter and single-chip microcomputer tape deck, described water meter, the transducer that mechanical corner can be transformed to electric impulse signal all is housed on ammeter and the gas meter, flow meter, described single-chip microcomputer tape deck comprises shaping circuit, decade counter, latch, three-state driver, single-chip microcomputer and corresponding control logic circuit, the electric impulse signal of being sent here by transducer is sent to the input of decade counter after the shaping circuit shaping, the three-state output of decade counter is directly hung to the P of single-chip microcomputer _oOn the mouth, and its carry signal is sent to an input of many input NOR gate and an input of latch respectively, the output signal of latch is sent to the input of three-state driver, its output then connects and is suspended on the data/address bus, and the output of NOR gate then directly links to each other with the INTO end of single-chip microcomputer.

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