CN2879128Y - Electron pressure flux meter - Google Patents
Electron pressure flux meter Download PDFInfo
- Publication number
- CN2879128Y CN2879128Y CN 200620082125 CN200620082125U CN2879128Y CN 2879128 Y CN2879128 Y CN 2879128Y CN 200620082125 CN200620082125 CN 200620082125 CN 200620082125 U CN200620082125 U CN 200620082125U CN 2879128 Y CN2879128 Y CN 2879128Y
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Abstract
Electronic pressure flowmeter belongs to the field of the contact deferential pressure measurement on telecommunication cable, comprising a power supply, a flow transducer, a flow amplifying circuit, an A/D converter, a digital processor, an output circuit and an alarm circuit. The flow transducer connects with the flow amplifying circuit which connects with the A/D converter, the converter connecting the digital processor which is in connection with the output circuit and alarm circuit. The flowmeter is characterized in that a pressure gathering circuit is additionally positioned, comprising a pressure transducer and the related connection with the pressure amplifying circuit, which connects with the inlet of the A/D converter. The pressure transducer and the related connection with the pressure amplifying circuit are installed additionally on the basis of original flowmeter. The digital voltage value corresponding to actual pressure and flow is calculated from the result of the gathered signal processed by the digital processor, and then is output and displayed, or alarmed. Meanwhile, the flowmeter has the advantages of high testing precision and stable performance.
Description
Technical field
The utility model relates to a kind of electron pressure flowmeter, belongs to telecommunication cable contact differential pressure pressure measurement field.
Background technology
Flowmeter is the checkout equipment that is connected between inflator and the telecommunication cable, and general flowmeter can not reflect the true pressure of telecommunication cable inside, does not demonstrate the situation of cable intuitively, causes misjudgment easily.Known electronic flow-meter is made up of sensor, signal amplifier, analog to digital converter and processor etc.At present, the flowmeter that is used for the telecommunication cable automatic aerator of production can only show the flow of tested gas mostly.The patent No. is the cable maintenance electronic flow-meter that the patented technology of ZL00257075 discloses a kind of monitoring pressure function that has, the sensor of its every road signal acquisition circuit adopts two thermistors to make sensitive element, and has set up tensimeter and be installed in the same gas circuit at thermistor.Adopt manometric flowmeter, pressure detection precision and sensitivity are all not enough, have increased equipment occupation space, safeguard that use is very inconvenient.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of be applied on the telecommunication cable automatic aerator can the measurement gas flow, again the degree of accuracy height of energy measurement gaseous tension, reliability and durability, safeguard electron pressure flowmeter easy to use.
The technical scheme that its technical matters that solves the utility model adopts is: the electron pressure flowmeter, comprise power supply, flow sensor, the flow amplifying circuit, analog to digital converter, digital processing unit, output circuit and warning circuit, flow sensor connection traffic amplifying circuit, flow amplifying circuit connection mode number converter, analog to digital converter linking number word processor, digital processing unit connects output circuit and alarm, it is characterized in that: set up the pressure acquisition circuit, comprise pressure transducer and the pressure amplifying circuit that is attached thereto, the input port of pressure amplifying circuit connection mode number converter.The input end of the signal cut-in pressure amplifying circuit that pressure transducer is gathered, output to analog to digital converter after treatment, analog to digital converter is a digital signal with conversion of signals, then the input digit processor, digital processing unit is through handling, with imput output circuit and warning circuit as a result.
Described pressure amplifying circuit comprises signal amplification circuit and impedance matching box, and pressure transducer connects signal amplification circuit, and signal amplification circuit connects impedance matching box.
Described pressure acquisition circuit comprise 1 pin of pressure transducer U1 connect power circuit output end+12V, 3 pin ground connection, 2 pin, 4 pin are respectively by resistance R 1, insert operational amplifier U2A behind the R2, the in-phase input end of U2B, amplifying circuit comprises operational amplifier U2, potentiometer RP1, RP2 and operational amplifier U3, meet potentiometer RP1 between 2 pin of operational amplifier U2 and 6 pin, connecting resistance R4 between 6 pin of operational amplifier U2 and 7 pin, 1 pin of operational amplifier U2 and the connecting resistance R3 of 2 pin, 1 pin of operational amplifier U2A and 7 pin of operational amplifier U2B are respectively through inserting inverting input and the in-phase input end of operational amplifier U2D behind resistance R 5 and the R6.Between power supply and ground, contact R13, potentiometer RP2 and resistance R 12, the sliding end of potentiometer RP2 is received the in-phase input end of operational amplifier U2C, 8 pin of operational amplifier U2C connect 9 pin, connect resistance R 10 between 8 pin of operational amplifier U2C and the operational amplifier U2D, 12 pin of operational amplifier U2D are by resistance R 7 ground connection, 14 pin are by resistance R 8 ground connection, be connected to resistance R 9 between 13 pin and 14 pin, 14 pin of operational amplifier U2D are received 3 pin of impedance matching box U3 through diode D1, D2,2 pin of impedance matching box U3 connect 1 pin, and 1 pin meets analog to digital converter U4.
Described pressure acquisition circuit is provided with the 1-10 road, and every road Acquisition Circuit adopts needle valve switch.
Described output circuit connection traffic display circuit.
Compared with prior art, the beneficial effect that the utility model electron pressure flowmeter is had is: by the pressure amplifying circuit of setting up pressure transducer and be attached thereto on the basis of original flowmeter, the signal of gathering obtains the result through digital processor processes and obtains and actual pressure, the corresponding digital voltage value of flow, and output shows or reports to the police then.Be configured according to the actual cable number, every road flowmeter warning value can freely be set according to actual needs, can monitor simultaneously to show gas flow and pressure.The flow display circuit adopts numeral to show, the light beam that flow value is set to strip number percent shows, is easy to read.Have simultaneously:
Every electronic flow-meter can be monitored the pressure and the flow of 10 road cables at most, can be configured according to the actual cable number.
The electronic flow-meter measuring accuracy is less than 2.5%, the accuracy height.
Show total flow, shunt flow, shunt pressure, every road flowmeter warning value is adjustable.
Can send the parameter of total flow, single channel flow, single channel pressure to Surveillance center by data acquisition unit, carry out the Centralized Monitoring management.
The force value of electronic flow-meter is that numeral shows, flow value is that the light beam of strip number percent shows, is easy to read.
Sensor accuracy height, stable performance.
Communication port is set on digital processing unit, transmits as required.
The needle valve switch that adopt on every road, all fine-tuning, human oriented design, advantage such as easy to use.
Description of drawings
Fig. 1 is a principle of work block diagram of the present utility model;
Fig. 2 is pressure acquisition circuit theory diagrams of the present utility model;
Fig. 3 is flow collection circuit theory diagrams of the present utility model;
Fig. 4 is the utility model digital processing unit and output circuit circuit theory diagrams.
Fig. 1-the 4th, the most preferred embodiment of the utility model electron pressure flowmeter, in Fig. 1-2: R1-R44 resistance C1-C11 electric capacity D1, D2 diode U1 pressure transducer U2, U3, U5, U6 operational amplifier U4 analog to digital converter U7, U8 flow sensor U9 digital processing unit U10 show output unit CRY1 crystal oscillator Q1-Q15 triode RP1-RP3 potentiometer
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, the utility model comprises that the output terminal of power supply connects each chip of pressure transducer, flow sensor, pressure amplifying circuit, flow amplifying circuit, analog to digital converter, digital processing unit and output circuit respectively, the input end of the output termination analog to digital converter of pressure amplifying circuit and flow amplifying circuit, the input end of the output terminal linking number word processor of analog to digital converter, the output terminal of digital processing unit connects output circuit and alarm.
As shown in Figure 2, pressure acquisition circuit theory diagrams of the present utility model, the pressure acquisition circuit comprise 1 pin of pressure transducer U1 connect power circuit output end+12V, 3 pin ground connection, 2 pin, 4 pin are respectively by inserting the in-phase input end of operational amplifier U2A, U2B after the resistance R 1, R2.Amplifying circuit comprises operational amplifier U6, potentiometer RP1, RP2 and operational amplifier U3, meet potentiometer RP1 between 2 pin of operational amplifier U2 and 6 pin, connecting resistance R4 between 6 pin of operational amplifier U2 and 7 pin, 1 pin of operational amplifier U2 and the connecting resistance R3 of 2 pin, 1 pin of operational amplifier U2A and 7 pin of operational amplifier U2B are respectively through inserting inverting input and the in-phase input end of operational amplifier U2D behind resistance R 5 and the R6.Between power supply and ground, contact R13, potentiometer RP2 and resistance R 12, the sliding end of potentiometer RP2 is received the in-phase input end of operational amplifier U2C, 8 pin of operational amplifier U2C connect 9 pin, connect resistance R 10 between 8 pin of operational amplifier U2C and the operational amplifier U2D.12 pin of operational amplifier U2D are by resistance R 7 ground connection, and 14 pin are connected to resistance R 9 by resistance R 8 ground connection between 13 pin and 14 pin, and 14 pin of operational amplifier U2D are received 3 pin of operational amplifier U3 through diode D1, D2.2 pin of operational amplifier U3 connect 1 pin, and 1 pin meets analog to digital converter U4.
As shown in Figure 3, flow collection circuit of the present utility model comprises flow sensor U7, U8, operational amplifier U5, U6, triode Q1 and capacitor C 2-C9.Flow sensor U7, U8 are electric signal with the gas flow signal transition, after operational amplifier U5 amplifies, by the impedance matching circuit input analog-to-digital converter U4 that is made up of operational amplifier U6, analog to digital converter U4 is among the digital processing unit U9 that is attached thereto of digital signal input with conversion of signals.
As shown in Figure 4, the utility model digital processing unit and output circuit comprise digital processing unit U9, crystal oscillator CRY1, capacitor C 10, C11, resistance R 31-R44, triode Q2-Q15 and demonstration output unit U10.The signal that digital processing unit U9 transmits analog to digital converter U4 earlier judges, and calls suitable function expression again, obtains and the corresponding digital voltage value of actual pressure, and output drives display output circuit U10 then.
It is the pressure transducer of 26PCDFA6G that pressure transducer U1 can adopt signal, precision height, stable performance.Digital processing unit adopts singlechip technology that the data of measuring are handled, and adopts interference protection measures such as digital filtering, house dog, strengthens the versatility of production technology, can carry out the intellectuality debugging.Display output circuit U10 adopts general digital display and light beam to show.Analog to digital converter U4, digital processing unit U9 and display output circuit U10 module adopt typical circuit, and signal transmission and control between them are micro-processor controlled routines, and it is commonly used that it is connected to those skilled in the art.General photoelectric alarm or voice guard are set.
Every electron pressure flowmeter can be provided with the pressure and the flow of monitoring 1-10 road cable, can be configured according to the actual cable number.Can show total flow, shunt flow, shunt pressure, every road flowmeter alarming value can be adjusted as required.Can also can send the parameter of total flow, single channel flow, single channel pressure to Surveillance center by communication port, carry out the Centralized Monitoring management.Every road signal of measuring adopts needle valve switch, and is all fine-tuning, realizes human oriented design, easy to use.
Its principle of work and the course of work are: pressure transducer U1 is an electric signal with the flow pressure signal transition of gas, after the computing of pressure amplifying circuit is amplified, by impedance matching circuit U3 input analog-to-digital converter U4, become digital signal through analog to digital converter U4 then and pass among the digital processing unit U9.Digital processing unit U9 judges signal earlier, calls suitable function expression again, obtains and the corresponding digital voltage value of actual pressure, outputs to display output circuit U10 then.
Flow sensor U7, U8 are electric signal with the gas flow signal transition, through the amplification input analog-to-digital converter U4 of flow amplifying circuit, become digital signal through analog to digital converter U4 then and pass among the digital processing unit U9.Digital processing unit U9 judges signal earlier, calls suitable function expression again, obtains and the corresponding digital stream value of actual flow, outputs to display output circuit U10 then.
When tested gaseous tension or flow exceeded setting value, digital processing unit U9 started alarm equipment alarm.
Claims (5)
1, electron pressure flowmeter, comprise power supply, flow sensor, flow amplifying circuit, analog to digital converter, digital processing unit, output circuit and warning circuit, flow sensor connection traffic amplifying circuit, flow amplifying circuit connection mode number converter, analog to digital converter linking number word processor, digital processing unit connects output circuit and alarm, it is characterized in that: set up the pressure acquisition circuit, comprise pressure transducer and the pressure amplifying circuit that is attached thereto, the input port of pressure amplifying circuit connection mode number converter.
2, electron pressure flowmeter according to claim 1 is characterized in that: described pressure amplifying circuit comprises signal amplification circuit and impedance matching box, and pressure transducer connects signal amplification circuit, and signal amplification circuit connects impedance matching box.
3, electron pressure flowmeter according to claim 2, it is characterized in that: described pressure acquisition circuit comprise 1 pin of pressure transducer U1 connect power circuit output end+12V, 3 pin ground connection, 2 pin, 4 pin are respectively by resistance R 1, insert operational amplifier U2A behind the R2, the in-phase input end of U2B, amplifying circuit comprises operational amplifier U2, potentiometer RP1, RP2 and operational amplifier U3, meet potentiometer RP1 between 2 pin of operational amplifier U2 and 6 pin, connecting resistance R4 between 6 pin of operational amplifier U2 and 7 pin, 1 pin of operational amplifier U2 and the connecting resistance R3 of 2 pin, 1 pin of operational amplifier U2A and 7 pin of operational amplifier U2B are respectively through inserting inverting input and the in-phase input end of operational amplifier U2D behind resistance R 5 and the R6, R13 contacts between power supply and ground, potentiometer RP2 and resistance R 12, the sliding end of potentiometer RP2 is received the in-phase input end of operational amplifier U2C, 8 pin of operational amplifier U2C connect 9 pin, connect resistance R 10 between 8 pin of operational amplifier U2C and the operational amplifier U2D, 12 pin of operational amplifier U2D are by resistance R 7 ground connection, 14 pin are by resistance R 8 ground connection, be connected to resistance R 9 between 13 pin and 14 pin, 14 pin of operational amplifier U2D are through diode D1, D2 receives 3 pin of impedance matching box U3,2 pin of impedance matching box U3 connect 1 pin, and 1 pin meets analog to digital converter U4.
4, electron pressure flowmeter according to claim 1 is characterized in that: described pressure acquisition circuit is provided with the 1-10 road, and every road Acquisition Circuit adopts needle valve switch.
5, electron pressure flowmeter according to claim 1 is characterized in that: described output circuit connection traffic display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082125 CN2879128Y (en) | 2006-03-18 | 2006-03-18 | Electron pressure flux meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082125 CN2879128Y (en) | 2006-03-18 | 2006-03-18 | Electron pressure flux meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2879128Y true CN2879128Y (en) | 2007-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620082125 Expired - Fee Related CN2879128Y (en) | 2006-03-18 | 2006-03-18 | Electron pressure flux meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2879128Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674356A (en) * | 2013-11-30 | 2014-03-26 | 成都国科海博信息技术股份有限公司 | Pressure sensor with long service life and high sensitivity |
| CN109708804A (en) * | 2018-11-27 | 2019-05-03 | 襄阳风神物流有限公司 | Automatic inflator inflation alarm system |
-
2006
- 2006-03-18 CN CN 200620082125 patent/CN2879128Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674356A (en) * | 2013-11-30 | 2014-03-26 | 成都国科海博信息技术股份有限公司 | Pressure sensor with long service life and high sensitivity |
| CN103674356B (en) * | 2013-11-30 | 2015-09-09 | 成都国科海博信息技术股份有限公司 | Long service life and the high pressure transducer of susceptibility |
| CN109708804A (en) * | 2018-11-27 | 2019-05-03 | 襄阳风神物流有限公司 | Automatic inflator inflation alarm system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |