CN207180797U - Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment - Google Patents
Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment Download PDFInfo
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- CN207180797U CN207180797U CN201721091944.XU CN201721091944U CN207180797U CN 207180797 U CN207180797 U CN 207180797U CN 201721091944 U CN201721091944 U CN 201721091944U CN 207180797 U CN207180797 U CN 207180797U
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- conductive plastic
- plastic potentiometer
- drive gear
- potentiometer
- conversion equipment
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Abstract
It the utility model is related to a kind of flowmeter high-resolution based on conductive plastic potentiometer and count conversion equipment.It is characterized in that including counting frame, counter, drive gear, conductive plastic potentiometer and AD Acquisition Circuit, counter and drive gear are arranged on counting frame, the great wheel of driving gear drives counter, it is provided with the conductive plastic potentiometer that drive gear can be followed continuously to rotate on drive gear, the gear ratio of drive gear and great wheel is 1:1, on conductive plastic potentiometer connection AD Acquisition Circuit is set, AD Acquisition Circuit is arranged on display control circuit plate.Compared with being finely divided according to the conductive plastic potentiometer resistance value of collection with full scale resistance value, if using 10 grades of subdivisions, for the counter of 0.001 side's registration, then resolution ratio is up to 0.001 side, if carrying out 20 grades of subdivisions, resolution ratio can select according to demand up to 0.0005 side.The circuit is nonmagnetic part, therefore hardly influenceed by magnetic disturbance.
Description
Technical field
It the utility model is related to a kind of flowmeter high-resolution based on conductive plastic potentiometer and count conversion equipment.
Background technology
Largely in the cut-out type flowmeter used on Vehicles Collected from Market, typically by carrying out electro mechanical transformation with counter to table,
Read the character wheel count value of table counter.Common mode has：（1）One magnet steel of increase is taken turns in counter second, using dry
Huang pipe or magnetic switch are counted, and count resolution is third round unit indicating value；（2）Transformation second takes turns to the 8th wheel character wheel and used
Photovoltaic principals direct-reading；（3）The 8th wheel is taken turns to using image direct-read identification second.More than（2）（3）Method typically avoids great wheel, because
For great wheel it is static when can be in any angle, the numerical value on character wheel is typically not at positive display location, and other character wheels are static
Shi Douhui is in display and hit exactly, and is easy to photoelectricity or image to be handled.Acquisition resolution highest of the 3 kinds of methods of the above to counter
Second indicating value unit value can only be arrived, such as general civilian flowmeter counter indicating value end position is 0.001 side, and above method is most
Height is only capable of reaching 0.01 side, and actually most producer's intelligence meter reading resolution ratio are generally 0.1 side, continues tiny flow quantity for combustion gas
The unusual condition of leakage, above structure can not meet collection demand.
Utility model content
For problems of the prior art, the purpose of this utility model is that providing one kind is based on conductive plastics current potential
The flowmeter high-resolution of device counts the technical scheme of conversion equipment.
The described flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that including meter
Several framves, counter, drive gear, conductive plastic potentiometer and AD Acquisition Circuit, counter and drive gear are arranged at counting
On frame, the great wheel of driving gear drives counter, the conduction that drive gear can be followed continuously to rotate is provided with drive gear
The gear ratio of plastic potentiometer, drive gear and great wheel is 1:1, on conductive plastic potentiometer connection AD Acquisition Circuit, AD are set
Acquisition Circuit is arranged on display control circuit plate.
The described flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that described to lead
Electric plastic potentiometer direct lead wire is to display control circuit plate.
The described flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that described to lead
The position of the range 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 85% and 95% of electric plastic potentiometer corresponds to great wheel respectively
Display numeral 0,1,2,3,4,5,6,7,8 and 9.
The described flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that described to lead
The top and bottom of electric plastic potentiometer are arranged in series divider resistance, and the centre tap of conductive plastic potentiometer is to reference power source
Negative pole or a positive pole sampling resistor in parallel, 100 times of the divider resistance sum of resistance at least two of sampling resistor.
The described flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that the AD
The sampling period of Acquisition Circuit is 1 second.
The utility model is provided with the conductive plastic potentiometer that drive gear can be followed continuously to rotate on drive gear,
The position of the range 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 85% and 95% of conductive plastic potentiometer is corresponded into head respectively
The display numeral 0,1,2,3,4,5,6,7,8 and 9 of wheel, passes through the cooperation of AD Acquisition Circuit, it is possible to accurate to read the aobvious of great wheel
Registration word, safety assurance ability of the cut-out type flowmeter when lasting low discharge is revealed can be strengthened.
Compared with being finely divided according to the conductive plastic potentiometer resistance value of collection with full scale resistance value, if using 10 grades
Subdivision, then for the counter of 0.001 side's registration, then resolution ratio is up to 0.001 side, if carrying out 20 grades of subdivisions, resolution ratio can
Up to 0.0005 side, can select according to demand.The circuit is nonmagnetic part, therefore hardly influenceed by magnetic disturbance.
The utility model can improve the resolution ratio gathered in real time, while the device can be synchronized to the numeral of character wheel and determined
Position, possesses the characteristics of being barely affected to magnetic disturbance, simple in construction, the cut-out type diaphragm gas meter that is particularly suitable for use in is to small stream
The collection demand of amount.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram of conductive plastic potentiometer；
Fig. 3 is acquisition principle schematic diagram；
In figure：1- counting frames, 2- counters, 3- drive gears, 4- conductive plastic potentiometers, 5- great wheels.
Embodiment
With reference to Figure of description, the utility model is described in further detail：
Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, including counting frame 1, counter 2, drive
Moving gear 3, conductive plastic potentiometer 4 and AD Acquisition Circuit, counter 2 and drive gear 3 are arranged on counting frame 1, driving
The great wheel 5 of the actuation counter of gear 3, the conductive plastics electricity that drive gear can be followed continuously to rotate is provided with drive gear 3
Position device 4, mechanical life, the gear ratio of drive gear 3 and great wheel 5 was 1 up to 5,000 ten thousand weeks:1, during installation, conductive plastic potentiometer
Range 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 85% and 95% position correspond to respectively great wheel display numeral 0,1,
2nd, 3,4,5,6,7,8 and 9, on conductive plastic potentiometer connection AD Acquisition Circuit is set, AD Acquisition Circuit is arranged on display control
It is the basic composition of each flowmeter on circuit board, on display control circuit plate, will not be repeated here.Conductive plastic potentiometer is straight
Lead is connect to display control circuit plate, without the mounting circuit boards on counter.
Because conductive plastic potentiometer is passive device, it is necessary to apply reference power source, the preferential reference electricity using AD collections
Source, and divider resistance of being connected in conductive plastic potentiometer top and bottom, so that conductive plastic potentiometer centre tap exports electricity
In linearly interval of the pressure in AD collections rather than in gamut.
Conductive plastic potentiometer centre tap is to reference source negative pole or a positive pole sampling resistor in parallel, the resistance of sampling resistor
It is worth more than 100 times of divider resistance resistance sum of being connected for top and bottom, in order to gather the electric of identification rotational potentiometer
Corner.
The principle of this programme acquisition method is as follows：Liquid crystal is added up into registration during Default Value to be set to show with mechanical counter
Number is identical, and when flowmeter just conventional gas, drive gear synchronous drive great wheel and conductive plastic potentiometer rotate, because great wheel turns
Not over 1 circle in not more than 41 rpms, 1 second of speed, therefore AD acquisition intervals may be configured as 1 second, because single AD turns
Change can and digital positioning carried out to character wheel, different from step-by-step counting mode rotating speed it is fast when need to improve picking rate, it is larger
Acquisition interval can substantially reduce power consumption.Ratio is finely divided according to the conductive plastic potentiometer resistance value of collection and full scale resistance value
Compared with if using 10 grades of subdivisions, for the counter of 0.001 side's registration, then resolution ratio is up to 0.001 side, if carrying out 20
Shelves subdivision, resolution ratio can select according to demand up to 0.0005 side.The circuit is nonmagnetic part, therefore hardly by magnetic disturbance
Influence.
Embodiment：As shown in figure 1, for the view of counter great wheel, the gear ratio of drive gear and great wheel is 1:1（Fig. 2）,
3 tap direct lead wire access display control circuit plates of conductive plastic potentiometer, display control circuit intralamellar part acquisition principle is such as
Fig. 3.
From the conductive plastic potentiometer that full scale is 10K resistances, upper and lower tap concatenates 5K resistance, and centre tap is to reference
Power supply VREF negative terminals simultaneously connect 200K resistance, when the voltage of collection is between 0.25VREF to 0.75VREF, the registration that can convert 0-9
Position, it is the electric corner of potentiometer when it is 0 to gather power supply.
Program resolution ratio determines by potentiometer and a/d resolution, but this 2 be far longer than 1% subdivision accuracy, it is therefore right
In the counter of 0.001 side, count resolution can be higher than 0.001 side, and real-time accuracy is by potentiometer all-in resistance tolerance and linearly
Determine, 0.002 side can be better than.
Claims (5)
1. the flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment, it is characterised in that including counting frame, meter
Number device, drive gear, conductive plastic potentiometer and AD Acquisition Circuit, counter and drive gear are arranged on counting frame, are driven
The great wheel of moving gear actuation counter, the conductive plastics current potential that drive gear can be followed continuously to rotate is provided with drive gear
The gear ratio of device, drive gear and great wheel is 1:1, on conductive plastic potentiometer connection AD Acquisition Circuit, AD Acquisition Circuit are set
It is arranged on display control circuit plate.
2. the flowmeter high-resolution according to claim 1 based on conductive plastic potentiometer counts conversion equipment, it is special
Sign is the conductive plastic potentiometer direct lead wire to display control circuit plate.
3. the flowmeter high-resolution according to claim 1 based on conductive plastic potentiometer counts conversion equipment, it is special
Sign is the position point of the range 5%, 15%, 25%, 35%, 45%, 55%, 65%, 75%, 85% and 95% of the conductive plastic potentiometer
The display numeral 0,1,2,3,4,5,6,7,8 and 9 of great wheel is not corresponded to.
4. the flowmeter high-resolution according to claim 1 based on conductive plastic potentiometer counts conversion equipment, it is special
Sign is that the top and bottom of the conductive plastic potentiometer are arranged in series divider resistance, and the centre of conductive plastic potentiometer is taken out
Head is to negative pole or positive pole a sampling resistor in parallel for reference power source, the divider resistance sum of resistance at least two of sampling resistor
100 times.
5. the flowmeter high-resolution according to claim 1 based on conductive plastic potentiometer counts conversion equipment, it is special
Sign is that the sampling period of the AD Acquisition Circuit is 1 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091944.XU CN207180797U (en) | 2017-08-29 | 2017-08-29 | Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091944.XU CN207180797U (en) | 2017-08-29 | 2017-08-29 | Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN207180797U true CN207180797U (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091944.XU Active CN207180797U (en) | 2017-08-29 | 2017-08-29 | Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341737A (en) * | 2018-11-21 | 2019-02-15 | 金卡智能集团股份有限公司 | Intelligent metering instrument brush sample count structure |
-
2017
- 2017-08-29 CN CN201721091944.XU patent/CN207180797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341737A (en) * | 2018-11-21 | 2019-02-15 | 金卡智能集团股份有限公司 | Intelligent metering instrument brush sample count structure |
| CN109341737B (en) * | 2018-11-21 | 2024-04-12 | 金卡智能集团股份有限公司 | Brush sampling counting structure of intelligent metering instrument |
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