CN204924319U - No magnetic current measures metering device - Google Patents
No magnetic current measures metering device Download PDFInfo
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- CN204924319U CN204924319U CN201520606420.4U CN201520606420U CN204924319U CN 204924319 U CN204924319 U CN 204924319U CN 201520606420 U CN201520606420 U CN 201520606420U CN 204924319 U CN204924319 U CN 204924319U
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Abstract
The utility model discloses a no magnetic current measures metering device. Comprising a housin, be equipped with impeller and detection device in the casing, detection device includes a central processing unit, the energizing circuit, voltage lifting circuit, LC oscillation circuit and envelope detection circuit, a central processing unit's first output is connected with the input of energizing circuit electricity, a central processing unit's second output is connected with the input of voltage lifting circuit electricity, the output of energizing circuit and the output of voltage lifting circuit are connected with LC oscillation circuit's input electricity, LC oscillation circuit's output is connected with envelope detection circuit's input electricity, envelope detection circuit's output is connected with a central processing unit's input electricity, LC oscillation circuit sets up the top at the impeller, the impeller is towards LC oscillation circuit's one side, half is the insulating region that insulating material made, second half is the conductive region that conducting material made. The utility model discloses impurity in the difficult adsorbed water, the accuracy of measuring can not descend.
Description
Technical field
The utility model relates to flow metering technical field, particularly relates to a kind of non-magnetic flowmeter amount device.
Background technology
At present, the flow detection mode of mechanical heat meter is for there being magnetic-type.Have magnetic-type flow measurement device to install magnet in impeller, the metallic impurity in magnet magnetic meeting planar water, easily result in blockage, have influence on the rotation of impeller, and along with increasing service time, magnet magnetic declines, and causes the accuracy of measuring to decline.
Summary of the invention
The purpose of this utility model be overcome existing flow measurement device detection mode for there being magnetic-type, need in impeller to install magnet, magnet magnetic can impurity in planar water, have influence on the rotation of impeller, along with service time increases, magnet magnetic declines, and causes the technical matters that the accuracy of measuring declines, provide a kind of non-magnetic flowmeter amount device, it is not easy to adsorb impurities in water, does not affect vane rotary, lower to pipeline water quality requirement, along with service time increases, the accuracy of measuring can not decline.
In order to solve the problem, the utility model is achieved by the following technical solutions:
A kind of non-magnetic flowmeter amount device of the present utility model, comprise housing, impeller and pick-up unit is provided with in described housing, described pick-up unit comprises CPU (central processing unit), energizing circuit, voltage lifting circuit, LC oscillatory circuit and envelope detection circuit, first output terminal of described CPU (central processing unit) is electrically connected with the input end of energizing circuit, second output terminal of described CPU (central processing unit) is electrically connected with the input end of voltage lifting circuit, the output terminal of described energizing circuit and the output terminal of voltage lifting circuit are electrically connected with the input end of LC oscillatory circuit, the described output terminal of LC oscillatory circuit is electrically connected with the input end of envelope detection circuit, the output terminal of described envelope detection circuit is electrically connected with the input end of CPU (central processing unit), described LC oscillatory circuit is arranged on the top of impeller, described impeller is towards the one side of LC oscillatory circuit, half is the insulating regions that insulating material is made, second half is the conductive region that conductive material is made.
In the technical program, CPU (central processing unit) is single-chip microcomputer.During work, first output terminal of CPU (central processing unit) exports high level, energizing circuit produces high level and charges to LC oscillatory circuit, after the charging complete of LC oscillatory circuit, first output terminal output low level of CPU (central processing unit), energizing circuit output low level is stopped power supply, and LC oscillatory circuit starts vibration.Second output terminal of CPU (central processing unit) exports high level and is given to voltage lifting circuit, voltage lifting circuit produces d. c. voltage signal, the waveform signal that this d. c. voltage signal produces with LC oscillatory circuit superposes, and makes follow-up waveform signal can reach the comparison range of CPU (central processing unit) internal comparator.The waveform that LC oscillatory circuit exports outputs to the input end of CPU (central processing unit) after envelope detection circuit process, CPU (central processing unit) processes the waveform received, detect the die-away time of this waveform, when impeller face below LC oscillatory circuit is insulating regions, the die-away time of waveform is longer, when impeller face below LC oscillatory circuit is conductive region, the die-away time of waveform is shorter, by the die-away time of detected envelope detecting circuit output waveform, judge that the impeller face below LC oscillatory circuit is insulating regions or conductive region.When impeller face below LC oscillatory circuit is turned to conductive region by insulating regions or is turned to insulating regions by conductive region, the pulse of CPU (central processing unit) record, CPU (central processing unit) calculates total flow according to the overall pulse number flowmeter corresponding with each pulse of record.Impeller does not install magnet, is not easy to adsorb impurities in water, does not affect vane rotary, lower to pipeline water quality requirement, along with service time increases, the accuracy of measuring can not decline.
As preferably, described energizing circuit comprises diode D1 and resistance R1, the positive pole of diode D1 is electrically connected with the first output terminal of CPU (central processing unit), and the negative pole of diode D1 is electrically connected with resistance R1 one end, and the resistance R1 other end is electrically connected with the input end of LC oscillatory circuit.
As preferably, described voltage lifting circuit comprises resistance R2, resistance R3 and electric capacity C1, resistance R2 one end is electrically connected with the second output terminal of CPU (central processing unit), the input end of the resistance R2 other end and resistance R3 one end, electric capacity C1 one end and LC oscillatory circuit is electrically connected, the resistance R3 other end and the electric capacity C1 other end all ground connection.
As preferably, described LC oscillatory circuit comprises electric capacity C2 and inductance L 1, described electric capacity C2 and inductance L 1 in parallel.
As preferably, described CPU (central processing unit) is STM8 single-chip microcomputer or PIC single chip microcomputer.
Helpfulness effect of the present utility model is: impeller does not install magnet, is not easy to adsorb impurities in water, does not affect vane rotary, lower to pipeline water quality requirement, and along with service time increases, the accuracy of measuring can not decline.
Accompanying drawing explanation
Fig. 1 is that a kind of circuit theory of the present utility model connects block diagram;
Fig. 2 is a kind of structural representation of impeller;
Fig. 3 is a kind of circuit theory diagrams of pick-up unit;
Fig. 4 be LC oscillatory circuit over a conductive region side time envelope detection circuit output waveform;
Fig. 5 be LC oscillatory circuit above insulating regions time envelope detection circuit output waveform;
In figure: 1, CPU (central processing unit), 2, energizing circuit, 3, voltage lifting circuit, 4, LC oscillatory circuit, 5, envelope detection circuit, 6, impeller, 7, conductive region, 8, insulating regions, 9, wireless communication module, 10, storage unit.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is done more specifically bright.
Embodiment: a kind of non-magnetic flowmeter amount device of the present embodiment, as Fig. 1, shown in Fig. 2, comprise housing, impeller and pick-up unit is provided with in housing, housing is provided with wireless communication module 9, 9, pick-up unit comprises CPU (central processing unit) 1, energizing circuit 2, voltage lifting circuit 3, LC oscillatory circuit 4, envelope detection circuit 5 and storage unit 10, first output terminal of CPU (central processing unit) 1 is electrically connected with the input end of energizing circuit 2, second output terminal of CPU (central processing unit) 1 is electrically connected with the input end of voltage lifting circuit 3, the output terminal of energizing circuit 2 and the output terminal of voltage lifting circuit 3 are electrically connected with the input end of LC oscillatory circuit 4, the output terminal of LC oscillatory circuit 4 is electrically connected with the input end of envelope detection circuit 5, the output terminal of envelope detection circuit 5 is electrically connected with the input end of CPU (central processing unit) 1, CPU (central processing unit) 1 is also electrically connected with wireless communication module 9 and storage unit 10 respectively, LC oscillatory circuit 4 is arranged on the top of impeller 6, impeller 6 is towards the one side of LC oscillatory circuit 4, half is the insulating regions 8 that insulating material is made, second half is the conductive region 7 that conductive material is made.
As shown in Figure 3, energizing circuit 2 comprises diode D1 and resistance R1, voltage lifting circuit 3 comprises resistance R2, resistance R3 and electric capacity C1, LC oscillatory circuit 4 comprises electric capacity C2 and inductance L 1, envelope detection circuit 5 comprises diode D2, resistance R4, resistance R5 and electric capacity C3, the positive pole of diode D1 is electrically connected with the first output terminal of CPU (central processing unit) 1, the negative pole of diode D1 is electrically connected with resistance R1 one end, the resistance R1 other end and resistance R2 one end, resistance R3 one end, electric capacity C1 one end, electric capacity C2 one end and the electrical connection of inductance L 1 one end, the resistance R2 other end is electrically connected with the second output terminal of CPU (central processing unit) 1, the resistance R3 other end and electric capacity C1 other end ground connection, the electric capacity C2 other end and inductance L 1 other end are electrically connected with the positive pole of diode D2, the negative pole of diode D2 is electrically connected with resistance R4 one end, the resistance R4 other end and electric capacity C3 one end, the input end electrical connection of resistance R5 one end and CPU (central processing unit) 1, the electric capacity C3 other end and the resistance R5 other end all ground connection.
CPU (central processing unit) 1 is single-chip microcomputer, and housing is with import and outlet.During work, first output terminal of CPU (central processing unit) 1 exports high level, energizing circuit 2 produces high level and charges to LC oscillatory circuit 4, after LC oscillatory circuit 4 charging complete, first output terminal output low level of CPU (central processing unit) 1, energizing circuit 2 output low level is stopped power supply, and LC oscillatory circuit 4 starts vibration.Second output terminal of CPU (central processing unit) 1 exports high level and is given to voltage lifting circuit 3, voltage lifting circuit 3 electric resistance partial pressure produces d. c. voltage signal, the waveform signal that this d. c. voltage signal produces with LC oscillatory circuit 4 superposes, and makes follow-up waveform signal can reach the comparison range of CPU (central processing unit) 1 internal comparator.The waveform that LC oscillatory circuit 4 exports outputs to the input end of CPU (central processing unit) 1 after envelope detection circuit 5 processes.
CPU (central processing unit) 1 processes the waveform received, detect the die-away time of this waveform, when impeller face below LC oscillatory circuit 4 is insulating regions 8, the die-away time of waveform is longer, as shown in Figure 5, when the impeller face below LC oscillatory circuit 4 is conductive region 7, the die-away time of waveform is shorter, as shown in Figure 4, by the die-away time of detected envelope detecting circuit 5 output waveform, judge that the impeller face below LC oscillatory circuit 4 is insulating regions or conductive region.When impeller face below LC oscillatory circuit is turned to conductive region by insulating regions or is turned to insulating regions by conductive region, CPU (central processing unit) 1 records a pulse, and CPU (central processing unit) 1 calculates total flow according to the overall pulse number flowmeter corresponding with each pulse of record.Storage unit 10 stores the data on flows of metering, and the flow value of metering is sent to remote monitoring terminal by wireless communication module 9 by CPU (central processing unit).Impeller does not install magnet, is not easy to adsorb impurities in water, does not affect vane rotary, lower to pipeline water quality requirement, along with service time increases, the accuracy of measuring can not decline.
Claims (5)
1. a non-magnetic flowmeter amount device, comprise housing, impeller (6) and pick-up unit is provided with in described housing, it is characterized in that: described pick-up unit comprises CPU (central processing unit) (1), energizing circuit (2), voltage lifting circuit (3), LC oscillatory circuit (4) and envelope detection circuit (5), first output terminal of described CPU (central processing unit) (1) is electrically connected with the input end of energizing circuit (2), second output terminal of described CPU (central processing unit) (1) is electrically connected with the input end of voltage lifting circuit (3), the output terminal of described energizing circuit (1) and the output terminal of voltage lifting circuit (3) are electrically connected with the input end of LC oscillatory circuit (4), the output terminal of described LC oscillatory circuit (4) is electrically connected with the input end of envelope detection circuit (5), the output terminal of described envelope detection circuit (5) is electrically connected with the input end of CPU (central processing unit) (1), described LC oscillatory circuit (4) is arranged on the top of impeller (6), described impeller (6) is towards the one side of LC oscillatory circuit (4), half is the insulating regions (8) that insulating material is made, second half is the conductive region (7) that conductive material is made.
2. a kind of non-magnetic flowmeter amount device according to claim 1, it is characterized in that: described energizing circuit (2) comprises diode D1 and resistance R1, the positive pole of diode D1 is electrically connected with the first output terminal of CPU (central processing unit) (1), the negative pole of diode D1 is electrically connected with resistance R1 one end, and the resistance R1 other end is electrically connected with the input end of LC oscillatory circuit (4).
3. a kind of non-magnetic flowmeter amount device according to claim 1, it is characterized in that: described voltage lifting circuit (3) comprises resistance R2, resistance R3 and electric capacity C1, resistance R2 one end is electrically connected with the second output terminal of CPU (central processing unit) (1), the input end of the resistance R2 other end and resistance R3 one end, electric capacity C1 one end and LC oscillatory circuit (4) is electrically connected, the resistance R3 other end and the electric capacity C1 other end all ground connection.
4. a kind of non-magnetic flowmeter amount device according to claim 1 or 2 or 3, is characterized in that: described LC oscillatory circuit (4) comprises electric capacity C2 and inductance L 1, described electric capacity C2 and inductance L 1 parallel connection.
5. a kind of non-magnetic flowmeter amount device according to claim 1 or 2 or 3, is characterized in that: described CPU (central processing unit) (1) is STM8 single-chip microcomputer or PIC single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606420.4U CN204924319U (en) | 2015-08-13 | 2015-08-13 | No magnetic current measures metering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606420.4U CN204924319U (en) | 2015-08-13 | 2015-08-13 | No magnetic current measures metering device |
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| CN204924319U true CN204924319U (en) | 2015-12-30 |
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| CN201520606420.4U Active CN204924319U (en) | 2015-08-13 | 2015-08-13 | No magnetic current measures metering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318918A (en) * | 2015-08-13 | 2016-02-10 | 利尔达科技集团股份有限公司 | A non-magnetic flow metering device and a metering method thereof |
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2015
- 2015-08-13 CN CN201520606420.4U patent/CN204924319U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318918A (en) * | 2015-08-13 | 2016-02-10 | 利尔达科技集团股份有限公司 | A non-magnetic flow metering device and a metering method thereof |
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