CN105784013A - Intelligent flow meter - Google Patents
Intelligent flow meter Download PDFInfo
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- CN105784013A CN105784013A CN201410816550.0A CN201410816550A CN105784013A CN 105784013 A CN105784013 A CN 105784013A CN 201410816550 A CN201410816550 A CN 201410816550A CN 105784013 A CN105784013 A CN 105784013A
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- circuit
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- flow meter
- power supply
- self test
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Abstract
The invention discloses an intelligent flow meter which comprises a machine shell, a power supply circuit, a flow meter body, a control circuit and a power supply self-checking circuit.The power supply circuit, the flow meter body, the control circuit and the power supply self-checking circuit are arranged in the machine shell.The power supply circuit is connected with the flow meter body, the power supply self-checking circuit and the control circuit.The control circuit is connected with the flow meter body and the power supply self-checking circuit.The power supply self-checking circuit is used for checking the output voltage value of the power supply circuit.The power supply circuit of the flow meter is self-checked through the power supply self-checking circuit; it is ensured that the flow meter can normally work under all circumstances and can measure flow for a long time even in wild projects or sudden abnormity, and it is ensured that data is not lost.Thus, it can be ensured that the output voltage of the power supply is in a normal range or a power supply is replaced in time; the flow meter is simple in circuit structure, low in cost, stable and reliable.
Description
Technical field
The present invention relates to a kind of effusion meter, particularly to a kind of intelligent flow meter that effusion meter power circuit can be carried out self-inspection.
Background technology
Along with developing rapidly of Microcomputer Technology and embedded system, the regular logical electronic circuit of conventional instrument is replaced with microcomputer (single-chip microcomputer and embedded system), the smart instrument with certain intelligence of Development of New Generation, it has also become the new trend of instrument development field.Effusion meter requires to can be suitably used for various complex environment, it is possible to combine with other upstream and downstream equipment, it is achieved the intellectuality of situ flow measurement and multifunction.Effusion meter is the advanced instrument of on-line measurement fluids within pipes flow, has common application, and constantly develop to intelligentized direction in the industries such as oil, chemical industry, papermaking, metallurgy.
In order to can guarantee that effusion meter can normal operation in all cases, even in the engineering of field or in unexpected abnormality situation, it is also possible to carry out flow measurement for a long time, it is ensured that not losing of data.It is thus desirable to power circuit is carried out self-inspection to ensure that electric power output voltage in normal range or changes power supply in time.
Summary of the invention
In view of this, the technical problem to be solved is to provide a kind of intelligent flow meter that effusion meter power circuit can carry out self-inspection.
The object of the present invention is achieved like this:
A kind of intelligent flow meter provided by the invention, including casing, power circuit, effusion meter, control circuit and power self test circuit；
Described power circuit, effusion meter, control circuit and power self test circuit are arranged in casing；
Described power circuit is connected with effusion meter, power self test circuit and control circuit respectively；
Described control circuit is connected with effusion meter and power self test circuit respectively；Described power self test circuit is for detecting the output voltage values of power circuit.
Further, described power self test circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and reverse-blocking tetrode thyristor；
Described voltage self-checking circuit is connected the output voltage values for obtaining power circuit two ends with power circuit；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described reverse-blocking tetrode thyristor connects between power circuit and effusion meter；The end that controls of described reverse-blocking tetrode thyristor is connected the break-make for controlling reverse-blocking tetrode thyristor with the outfan of comparator.
Further, described power self test circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
Further, described power self test circuit also include by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The beneficial effects of the present invention is: the present invention adopts power self test circuit that effusion meter power circuit is carried out self-inspection；Ensure that effusion meter can normal operation in all cases, even in the engineering of field or in unexpected abnormality situation, it is also possible to carry out flow measurement for a long time, it is ensured that not losing of data.Therefore can ensure that electric power output voltage in normal range or changes power supply in time；This circuit structure is simple, cost is low and reliable and stable.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
The intelligent flow meter schematic diagram that Fig. 1 provides for the embodiment of the present invention；
The magneto-dependent sensor amplification circuit diagram that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment is only for illustrating the present invention, rather than in order to limit the scope of the invention.
As it can be seen, a kind of intelligent flow meter provided by the invention, including casing, power circuit, effusion meter, control circuit and power self test circuit；
Described power circuit, effusion meter, control circuit and power self test circuit are arranged in casing；
Described power circuit is connected with effusion meter, power self test circuit and control circuit respectively；
Described control circuit is connected with effusion meter and power self test circuit respectively；Described power self test circuit is for detecting the output voltage values of power circuit.
Described power self test circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and reverse-blocking tetrode thyristor；
Described voltage self-checking circuit is connected the output voltage values for obtaining power circuit two ends with power circuit；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described reverse-blocking tetrode thyristor connects between power circuit and effusion meter；The end that controls of described reverse-blocking tetrode thyristor is connected the break-make for controlling reverse-blocking tetrode thyristor with the outfan of comparator.
Described power self test circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
Described power self test circuit also includes by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The intelligent flow meter that the present embodiment provides can adopt the single-chip microcomputer of MSP430F449 to realize；Ultimate principle is: rely on parts to rotate, and produces electric impulse signal with photoelectric encoder or magneto-dependent sensor, and delivers to the flow computing device being made up of single-chip microcomputer and process.This effusion meter can also adopt the intelligence instrument new techniques such as Data correction, digital filtering, multi output form, self diagnosis, power down protection and dual power supply system and dual sensor technology so that it is can more adapt to the working environment of various complexity.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but it will be understood by those within the art that, in the form and details it can be made various change, without departing from the spirit and scope that the present invention limits.
Claims (4)
1. an intelligent flow meter, it is characterised in that: include casing, power circuit, effusion meter, control circuit and power self test circuit；
Described power circuit, effusion meter, control circuit and power self test circuit are arranged in casing；
Described power circuit is connected with effusion meter, power self test circuit and control circuit respectively；
Described control circuit is connected with effusion meter and power self test circuit respectively；Described power self test circuit is for detecting the output voltage values of power circuit.
2. intelligent flow meter according to claim 1, it is characterised in that: described power self test circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and reverse-blocking tetrode thyristor；
Described voltage self-checking circuit is connected the output voltage values for obtaining power circuit two ends with power circuit；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described reverse-blocking tetrode thyristor connects between power circuit and effusion meter；The end that controls of described reverse-blocking tetrode thyristor is connected the break-make for controlling reverse-blocking tetrode thyristor with the outfan of comparator.
3. intelligent flow meter according to claim 1, it is characterised in that: described power self test circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
4. intelligent flow meter according to claim 1, it is characterised in that: described power self test circuit also includes by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816550.0A CN105784013A (en) | 2014-12-25 | 2014-12-25 | Intelligent flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816550.0A CN105784013A (en) | 2014-12-25 | 2014-12-25 | Intelligent flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105784013A true CN105784013A (en) | 2016-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410816550.0A Pending CN105784013A (en) | 2014-12-25 | 2014-12-25 | Intelligent flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105784013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147493A (en) * | 2019-06-27 | 2020-12-29 | 长城汽车股份有限公司 | Fault diagnosis system, fault diagnosis method and vehicle |
-
2014
- 2014-12-25 CN CN201410816550.0A patent/CN105784013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147493A (en) * | 2019-06-27 | 2020-12-29 | 长城汽车股份有限公司 | Fault diagnosis system, fault diagnosis method and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
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| WD01 | Invention patent application deemed withdrawn after publication |