CN201107065Y

CN201107065Y - Intelligent electromagnetic flow meter with recoding function without paper

Info

Publication number: CN201107065Y
Application number: CNU2007201912537U
Authority: CN
Inventors: 张柏林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-19
Filing date: 2007-11-19
Publication date: 2008-08-27
Anticipated expiration: 2017-11-19

Abstract

The utility model relates to a multiplex display intelligent electromagnetic flow meter which can display measuring flow in a plurality of ways. The flow meter solves the defects that the prior art can only record the instantaneous parameter, and the output of the logical quantity of the operation state, cannot record the parameter of a longer time, and cannot accomplish the output of the continuous quantity. The flow meter is characterized in that the flow meter comprises a measuring tube with an excitation coil, two electrodes are arranged in the measuring tube, the electrodes are connected with a converter circuit with a singlechip, the converter circuit comprises an input circuit, a sampling amplification circuit and an A/D converting circuit, a display circuit and a communication circuit which are controlled by the singlechip, as well as a mass storage circuit and an excitation signal circuit; the display circuit comprises a software module which can display data, bar diagrams, curves and tables. The detected data parameters can be stored according to a predetermined interval as the instant display is made at the same time, and the inquiry can be made in the ways of data, bar diagrams, or curves if necessary.

Description

Intelligent electromagnetic flowmeter with no paper writing function

Technical field

The utility model relates to a kind of electromagnetic flowmeter, especially a kind of intelligent electromagnetic flowmeter with no paper writing function.

Background technology

The principle of work of electromagnetic flowmeter is based on Faraday's electromagnetic induction law, when conducting liquid flows through the measuring tube that is enclosed in the magnetic field, will produce the induction electromotive force that is directly proportional with mean flow rate in the flow direction and the two perpendicular direction of magnetic field.Be provided with potential electrode in the watchcase of measuring tube, the induced potential that potential electrode receives is input to converter circuit by single-chip microcomputer computing and processing.

At present common electromagnetic flowmeter shows all is the instantaneous data message and the integrated flux information in the moment at that time; common intelligent flow meter has also just increased the output of the amount of logic of the preservation of prompting message and some running statuses; jumbo storage unit is not set in the circuit; can't effectively preserve a large amount of measuring-signals; need monitoring analysis at some; in the application of the key position of examination flow; be starved of continuous parameter writing function with long period; particularly in the application of remote monitoring or wireless signal transmission through regular meeting because the problem of transmission line causes the long-time leakage of data to pass, had a strong impact on examination and monitoring.

Summary of the invention

The utility model has solved existing electromagnetic flowmeter can only preserve instantaneous parameters and last running status, can not write down the parameter of long period, can't finish the shortcoming of previous moment continuous quantity output, a kind of output that can not only show in real time, write down instantaneous parameters and amount of logic is provided, can also write down the measurement parameter of long-time (a couple of days or several months), can also be wireless or the mode of wire communication to the host computer output data, and can accept the no paper writing function intelligent electromagnetic flowmeter that has of host computer instruction.

The utility model has also solved available technology adopting numeral single display, and the shortcoming of weak effect directly perceived provides a kind of intelligent electromagnetic flowmeter that adopts various ways to show and have no paper writing function.

Another purpose of the present utility model provides a kind ofly stores data so that the intelligent electromagnetic flowmeter with no paper writing function of the check or the multi-form demonstration of downloading.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of intelligent electromagnetic flowmeter with no paper writing function, comprise the measuring tube of being with field coil, the axis direction of measuring tube is vertical mutually with the magnetic field that field coil produces, be provided with two electrodes in the measuring tube, electrode is along caliber direction break-through tube wall, its electrode tip is concordant with the measuring tube inside surface, and electrode is linked the converter circuit that has single-chip microcomputer; Described converter circuit comprises input circuit, display circuit and telecommunication circuit under sampling amplifying circuit and A/D change-over circuit and the Single-chip Controlling, high capacity storage circuit and excitation signal circuit, memory circuit in succession communication interface or USB interface, having comprised in the display circuit can video data, the software module of excellent figure, curve and tabulation.Field circuit excitation coil produces magnetic field, the flowing liquid cutting magnetic line produces electromotive force in the measuring tube, obtain the Electromagnetic Flow signal by converter circuit, on display device, show instantaneous parameters or continuous parameter by display circuit, when showing continuous parameter, can select different display modes, such as data, excellent figure, curve or tabular form.

Communication interface in the converter circuit or USB interface can make host computer obtain measurement data or to assign instruction with wired or wireless communication modes with it; Converter circuit also comprises jumbo flash memory integrated circuit, under the control of single-chip microcomputer, the data that record are recorded in the flash memory, can access original data by control circuit in the time of needs checks or transmits, if because the problem of transmission line, in the time of can't finishing the transmission of data in real time, can be after recovering communication, the instruction by host computer is filled all data of biography with the data upload of preserving with Louing.

The beneficial effects of the utility model are: added jumbo storage circuit behind converter circuit, the data parameters that records can be stored according to predetermined interval in instant playback, and can be when needed with data, rod figure, or the mode of curve is for inquiry, can also upload data by wired or wireless communication modes, particularly in the application of many flowmeter networkings, can remedy the deficiency that communication network easily interrupts, after recovering communication, can not have and sew and mend the data on flows that passes previous time period, greatly facilitate monitoring and analyze examination.

Description of drawings

Fig. 1 is a kind of principle schematic of the utility model;

Among the figure: 1, potential electrode, 2, field coil, 3, measuring tube, 4, input circuit, 5, sampling amplifying circuit, 6, the A/D modular converter, 7, the digital excitation circuit, 8, the MCU single-chip microcomputer, 9, USB interface, 10, communication interface, 11, display circuit, 12, storage circuit.

Embodiment

Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: a kind of intelligent electromagnetic flowmeter (referring to accompanying drawing 1) with no paper writing function, comprise the measuring tube 3 of being with field coil, the axis direction of measuring tube is vertical mutually with the magnetic field that field coil 2 produces, be provided with two electrodes 1 in the measuring tube, electrode is along caliber direction break-through tube wall, its electrode tip is concordant with the measuring tube inside surface, two electrodes are linked converter circuit, wherein, described converter circuit comprises input circuit 4, sampling amplifying circuit 5, A/D change-over circuit 6, converter circuit has comprised that also digital excitation circuit 7 reaches high capacity storage circuit 12 and USB output interface 9 and communication interface 10 and the display circuit 11 that links to each other with single-chip microcomputer with single-chip microcomputer 8, the sampling amplifying circuit links to each other with the digital excitation circuit, the A/D change-over circuit links to each other with single-chip microcomputer, and display circuit comprises the energy video data, rod figure, the software module of curve and tabulation.

Claims

1, a kind of intelligent electromagnetic flowmeter with no paper writing function, comprise the measuring tube (3) of being with field coil, the axis direction of measuring tube is vertical mutually with the magnetic field that field coil (2) produces, be provided with two electrodes (1) in the measuring tube, electrode is along caliber direction break-through tube wall, its electrode tip is concordant with the measuring tube inside surface, the input circuit (4) of the flow signal that electrode detects in converter circuit, sampling amplifying circuit (5), A/D change-over circuit (6), processing through single-chip microcomputer (8) can be made no paper recorded and stored simultaneously by communication interface (10) output measurement data by storage circuit (12), or can be by the data of USB interface (9) output preservation, simultaneously can show instantaneous delivery and integrated flux and state parameter at display circuit (11), display circuit comprises the energy video data, rod figure, the software module of curve and tabulation.

2, the intelligent electromagnetic flowmeter with no paper writing function according to claim 1, it is characterized in that connecting communication interface in the described converter circuit, make host computer obtain measurement data or to assign steering order with wired or wireless communication modes with it.

3, the intelligent electromagnetic flowmeter with no paper writing function according to claim 1, it is characterized in that having inserted in the described converter circuit jumbo flash memory integrated circuit, be used for the information that record acquisition arrives, by can write down the length of a couple of days to several months to the selection of logging interval, form with curve, rod figure, data provides inquiry, and also available USB interface is exported the data of being preserved quickly and easily.