CN105222850A - Based on the liquid level non-contact measurement system of LabVIEW - Google Patents
Based on the liquid level non-contact measurement system of LabVIEW Download PDFInfo
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- CN105222850A CN105222850A CN201510668970.3A CN201510668970A CN105222850A CN 105222850 A CN105222850 A CN 105222850A CN 201510668970 A CN201510668970 A CN 201510668970A CN 105222850 A CN105222850 A CN 105222850A
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Abstract
The present invention is mainly used in observing and controlling analysis field, particularly applies the liquid level non-contact measurement system based on LabVIEW.Range finder module of the present invention is connected with slave computer, and described slave computer is connected with host computer by communication module; Data are transferred to host computer by slave computer, communication module by described range finder module, and the liquid level delta data that host computer is returned according to slave computer transmission generates liquid level change curve in real time.Present invention reduces testing cost; The environment that the personnel that are not suitable for directly measure can be measured; Analyze according to liquid level delta data, generate real time temperature data and curves, be convenient to direct observation; When liquid level data changing value is higher than preset upper limit value or lower than lower limit, carry out alarm and reminding; The liquid level data change of network real-time monitoring equipment under test is realized by communication module.
Description
Technical field
The present invention is mainly used in observing and controlling analysis field, particularly applies the liquid level non-contact measurement system based on LabVIEW.
Background technology
Traditional liquid level delta data is measured main by manually removing read-record, some more dangerous Environment space is not suitable for personnel and directly carries out DATA REASONING at the scene, also cause coarse measurement than being easier to produce error when manually carrying out DATA REASONING simultaneously, for the measuring equipment that some checkout equipments are heavier, bring much not convenient to measurement.Simultaneously at employing virtual instrument equipment, the LabVIEW produced based on America NI company, its hardware support kit data acquisition equipment mainly supporting NI company to produce, as data collecting card, but these equipment costly.
Summary of the invention
The object of the present invention is to provide one can be cheap, the liquid level non-contact measurement system based on LabVIEW of liquid level intensity of variation can be detected safely, accurately.
Technical solution.
Based on a liquid level non-contact measurement system device of LabVIEW, comprising: range finder module, slave computer, communication module, host computer, described range finder module is connected with slave computer, and described slave computer is connected with host computer by communication module; Data are transferred to host computer by slave computer, communication module by described range finder module, and the liquid level delta data that host computer is returned according to slave computer transmission generates liquid level change curve in real time.
Described slave computer adopts ArduinoMega2560, the liquid level delta data that slave computer transmission is returned, and generates liquid level change curve in real time by the LabVIEW software in host computer.
Described slave computer can according to actual needs, by programming data acquisition channel number.
Described program of lower computer flow process: carry out serial ports initialization, whether have data, if countless according to existence, proceed Data Detection if constantly detecting serial ports; If there are data to exist, received pulse width data, detects pulse width data, after calculating data, is sent to host computer; By the data received, reception data are transferred to host computer.
Described host computer, by operating instruction, reads the liquid level delta data real-time Communication for Power of equipment under test in slave computer.
The real-time monitoring that described communication module adopts wired module or wireless module, network carries out liquid level.
Described host computer is according to the requirement of actual production, liquid level data change higher limit and liquid level data change lower limit are set, when apart from module detect the liquid level delta data of equipment under test higher than set liquid level change higher limit time or lower than set liquid level change lower limit time, system will carry out alarm.
Described to the serial ports in LabVIEW with number race be connected, described several race is connected with VISA writing module, and VISA writing module is connected with VISA read through model, and VISA read through model is connected with waveform module and logic comparison module respectively.
Described VISA writing module with between VISA read through model, time delay module be set be connected,
Described host computer procedure flow process: first serial ports is set, to arranging serial ports number, baud rate, parity parameters in the VISA module in LabVIEW, above-mentioned parameter and slave computer parameter matching, the data of slave computer transmission pass to several race, then data are write into by the write operation in VISA module, then carry out time delay, read operation is carried out again by VISA read through model, the data reading of write is come, generates corresponding waveform, figure is shown; And the parameter arranged in VISA read through model sense data and logic comparison module is compared, when sense data higher than set by host computer liquid level change higher limit time or lower than set liquid level change lower limit time, system will carry out alarm.
Advantage of the present invention
1. the present invention carries out the design of liquid level delta data capture program by slave computer, avoids the data collecting card adopted costly.
2. the present invention can be not suitable for some the environment that personnel directly carry out fluid level data measure of the change and measures.
3. the present invention can be good at the collection arranging liquid level delta data on request, by generating real time temperature data and curves to gathered data analysis, is convenient to direct observation.
4. the present invention presets upper limit measured value and the lower limit measured value of liquid level data change to host computer, when its range finder module checkout equipment detects the liquid level data changing value of detected equipment higher than preset upper limit value or lower than lower limit, carries out alarm and reminding.
5. the liquid level data change of network real-time monitoring equipment under test is realized by communication module.
Accompanying drawing explanation
Fig. 1 is a liquid level data measure of the change process flow diagram of the present invention.
Fig. 2 is program of lower computer process flow diagram of the present invention.
Fig. 3 is host computer procedure process flow diagram of the present invention.
Embodiment
The present invention is based on the liquid level non-contact measurement system of LabVIEW, comprise following concrete steps:
Range finder module 1 checkout equipment is connected with equipment under test; Slave computer 2 reads the liquid level data change that described range finding checkout equipment detects tested experimental facilities; Described slave computer 2 is connected with host computer by wireless communication module; Described host computer receives the liquid level data change that described slave computer 2 reads the equipment under test detected by range finder module 1 checkout equipment; Generate liquid level data according to the change of gathered liquid level data and change time dependent curve; According to described liquid level data change curve, experimental facilities is analyzed.
The implementation procedure of the liquid level non-contact measurement system of LabVIEW of the present invention is as follows:
Step S1: range finder module checkout equipment is connected with equipment under test.
Particularly, described range finder module is fixed on a certain position above equipment under test, carries out the measurement of liquid level data change.
Step S2: range finder module 1 is connected with slave computer 2.
Particularly, arranging slave computer 2 flow process: carry out serial ports initialization according to Fig. 2, whether have data, if countless according to existence, proceed Data Detection if constantly detecting serial ports; If there are data to exist, received pulse width data, detects pulse width data, after calculating data, is sent to host computer; By the data received, reception data are transferred to host computer.
Described host computer, by operating instruction, reads the liquid level delta data real-time Communication for Power of equipment under test in slave computer.
Write liquid level data change according to Fig. 2 and gather code, the leading foot of range finder module 1 is connected with the corresponding pin in slave computer 2 programming, carries out the reading of liquid level data change.
Step S3: slave computer 2 is connected with host computer by wireless communication module.
Particularly, host computer flow process is set according to Fig. 3: host computer procedure flow process: first serial ports is set, to arranging serial ports number, baud rate, parity parameters in the VISA module in LabVIEW, above-mentioned parameter and slave computer parameter matching, the data of slave computer transmission pass to several race, by the write operation in VISA module, data are write into again, then carry out time delay, then carry out read operation by VISA read through model, the data reading of write is come, generate corresponding waveform, figure is shown; And the parameter arranged in VISA read through model sense data and logic comparison module is compared, when sense data higher than set by host computer liquid level change higher limit time or lower than set liquid level change lower limit time, system will carry out alarm.
By reading range finder module, described slave computer 2 detects that the liquid level delta data of equipment under test passes to host computer.
Step S4: the liquid level data change according to sampled point generates time dependent curve.
Particularly, open the LabVIEW software in described host computer, set corresponding liquid level data and gather port, then working procedure just can generate liquid level data change time history plot in real time, can show concrete liquid level change numerical value simultaneously.
In addition, can carry out the upper limit level changing value of liquid level data change and the setting of lower limit variation value in front panel, when the liquid level data changing value of reality detection is higher than higher limit or lower than lower limit, system will carry out alarm and reminding.
According to the liquid level non-contact measurement system of the invention process based on LabVIEW, send liquid level data change acquisition by host computer, can be carried out the collection of liquid level data change very easily by the capture program writing slave computer 2, practicality is stronger.Can well carry out the measurement of liquid level data change to some more dangerous environment, the liquid level data change of measurement can well be shown in real time by the LabVIEW software in host computer, comparison image simultaneously.
Claims (10)
1., based on a liquid level non-contact measurement system device of LabVIEW, it is characterized in that, comprising: range finder module, slave computer, communication module, host computer, described range finder module is connected with slave computer, and described slave computer is connected with host computer by communication module; Data are transferred to host computer by slave computer, communication module by described range finder module, and the liquid level delta data that host computer is returned according to slave computer transmission generates liquid level change curve in real time.
2. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, it is characterized in that, slave computer adopts ArduinoMega2560, the liquid level delta data that slave computer transmission is returned, and generates liquid level change curve in real time by the LabVIEW software in host computer.
3. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1 and 2, is characterized in that, slave computer can according to actual needs, by programming data acquisition channel number.
4. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 3, is characterized in that, program of lower computer flow process: carry out serial ports initialization, and whether have data, if countless according to existence, proceed Data Detection if constantly detecting serial ports; If there are data to exist, received pulse width data, detects pulse width data, after calculating data, is sent to host computer.
5. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, is characterized in that, described host computer, by operating instruction, reads the liquid level delta data real-time Communication for Power of equipment under test in slave computer.
6. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, is characterized in that, the real-time monitoring that communication module adopts wired module or wireless module, network carries out liquid level.
7. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, it is characterized in that, host computer is according to the requirement of actual production, liquid level data change higher limit and liquid level data change lower limit are set, when range finder module detect the liquid level delta data of equipment under test higher than set liquid level change higher limit time or lower than set liquid level change lower limit time, system will carry out alarm.
8. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, it is characterized in that, VISA in LabVIEW is connected with number race, described several race is connected with VISA writing module, VISA writing module is connected with VISA read through model, and VISA read through model is connected with waveform module and logic comparison module respectively.
9. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 8, is characterized in that, arrange time delay module and be connected between VISA writing module with VISA read through model.
10. a kind of liquid level non-contact measurement system device based on LabVIEW according to claim 1, it is characterized in that, host computer procedure flow process: first serial ports is set, to arranging serial ports number, baud rate, parity parameters in the VISA module in LabVIEW, above-mentioned parameter and slave computer parameter matching, the data of slave computer transmission pass to several race, by the write operation in VISA module, data are write into again, then time delay is carried out, read operation is carried out again by VISA read through model, the data reading of write is come, generates corresponding waveform, figure is shown; And the parameter arranged in VISA read through model sense data and logic comparison module is compared, when sense data higher than set by host computer liquid level change higher limit time or lower than set liquid level change lower limit time, system will carry out alarm.
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| CN201510668970.3A CN105222850A (en) | 2015-10-18 | 2015-10-18 | Based on the liquid level non-contact measurement system of LabVIEW |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916473A (en) * | 2018-09-15 | 2019-06-21 | 天津大学 | A kind of note formula liquid level measuring system and measurement method certainly |
| CN112295915A (en) * | 2020-10-10 | 2021-02-02 | 临沂会宝岭铁矿有限公司 | Mining vibrating screen oil tank liquid level monitoring device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916473A (en) * | 2018-09-15 | 2019-06-21 | 天津大学 | A kind of note formula liquid level measuring system and measurement method certainly |
| CN112295915A (en) * | 2020-10-10 | 2021-02-02 | 临沂会宝岭铁矿有限公司 | Mining vibrating screen oil tank liquid level monitoring device and method |
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Application publication date: 20160106 |