CN105628117A - Radar channel flow measurement system and method - Google Patents
Radar channel flow measurement system and method Download PDFInfo
- Publication number
- CN105628117A CN105628117A CN201610177078.XA CN201610177078A CN105628117A CN 105628117 A CN105628117 A CN 105628117A CN 201610177078 A CN201610177078 A CN 201610177078A CN 105628117 A CN105628117 A CN 105628117A
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- radar
- flow
- flow rate
- measuring system
- canal capacity
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/002—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/52—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring the height of the fluid level due to the lifting power of the fluid flow
Abstract
The invention relates to a radar channel flow measurement system and method. The measurement system comprises a PLC, a flow speed detector, a water level detector, an input unit, a display unit and a power supply. The flow speed detector is a radar sensor. The water level detector is an ultrasonic sensor. After channel parameters are input, the flowing speed and water level of water flow on the surface of a channel are detected one or more times through the radar sensor and the ultrasonic sensor, the section area and the average flow speed of the channel are calculated, and the flow of the channel is finally calculated. In this way, flow measurement of the channel can be automatically completed, the measurement operation is simple, easy and convenient, the measurement precision is high, and the radar channel flow measurement system is simple in structure, small in size, convenient to carry, easy to produce and machine, high in environment adaptive capacity, low in cost and beneficial to application and popularization, and solves the technical problems that an existing traditional water measurement facility is not standardized and large in water measurement error, can not be carried, and the like.
Description
Technical field
The invention belongs to canal capacity field of measuring technique, in particular to a kind of radar canal capacity measuring system and measuring method.
Background technology
At present, the method that the canal capacity on market is measured comprises hydraulic structure amount water, ad hoc water measure equipment amount water etc., and major part all needs to be installed on channel, or drops in water. The most commonly flow measurement weir channel process, great majority are cast-in-sites, due to the state of the art of construction crew and the restriction of field conditions, water-measuring device body is comparatively complicated in addition, causes and is difficult to during cast-in-site ensure size specification and construction precision, lack standardized designs and manufacture, cause relatively large water error, if irrigation water quality situation is poor, it is easy to cause the diapire of weir slot to deposit, and cannot dismantle after installing, cannot calibrate. The channel of RUBICON company of Australia development & production surveys chute lock, measuring accuracy height, technically reliable, but its cost height, and most of irrigated area is applied this product just certain difficulty, and cannot dismantle after installing, and cannot calibrate. Hydrometic propeller amount water, namely based on velocity_area method, it is necessary to manual operation, although measuring accuracy height, but cost of equipment height, and do not reach the requirement of automatization. In a word, ad hoc water measure equipment amount water, although precision is higher, but not easily keeps an eye on, easily loses, and part metering facility price is high, and non-irrigated area can bear.
All in all, China irrigated area amount corresponding measuring technology of olighydria and equipment are strengthen final canal system amount water level, specification irrigation water management, urgently need to develop economical and practical, level of automation height, fast, accurately and the water measure equipment of good portability.
Summary of the invention
The above-mentioned technical problem existed to solve in prior art, the present invention provides one can complete canal capacity measurement automatically, measurement is simple, light, convenient, measuring accuracy height, and structure is simple, compact, is convenient to carry, process for processing is easy, environmental adaptation ability is relatively strong, the radar canal capacity measuring system that cost is low and measuring method.
For solving the problems of the technologies described above, the present invention adopts following technological method:
A kind of radar canal capacity measuring system, includes:
PLC, processes for the measuring parameter of the flow velocity data that flow velocity detector and level switch sent and waterlevel data and input, calculates canal capacity;
Flow rate detection device, for the flow velocity data that gather in current channel and send PLC to;
Level switch, for the waterlevel data that gathers in current channel and send PLC to;
Input unit, for inputting steering order and measuring parameter to PLC;
Display unit, for showing the measuring result of canal capacity;
And power supply, supply work energy to each composition parts;
And, described flow rate detection device, level switch, input unit and display unit are all connected with PLC conducting, and described power supply is electrically connected with each composition parts.
Further, described flow rate detection device is radar sensor, and described level switch is ultrasonic transducer.
Further, the radar sensor of described flow rate detection device to be launching and receiving frequency be 24GHz, the survey flow rates of this sensor is 0.15��15m/s, and operating range is 0.5��30m; Described level switch is the ultrasonic transducer measuring distance for 150mm��1000mm.
Further, angle �� scope between the probe plane of described radar sensor and horizontal plane is 30 �㡫60 ��.
Further, described radar canal capacity measuring system includes touch-screen, and described input unit and display unit are respectively touch module and the display screen of touch-screen.
Further, described radar canal capacity measuring system includes shell and flexible support, described PLC, flow rate detection device, level switch and power supply are all located in shell, and described touch-screen is embedded the front at shell, described flexible the two ends up and down being set up in shell.
Further, described power supply is store battery.
A kind of measuring method based on above-mentioned radar canal capacity measuring system, comprise: first input channel parameter, utilize radar sensor and ultrasonic transducer that channel surface flow rate of water flow and water level are carried out once above detection, then calculate canal cross section area and mean flow rate, finally calculate canal capacity.
Further, described " utilize radar sensor to channel surface flow rate of water flow detection " be specially:
First, the oscillator vibrates of radar sensor sends the transmitting signal that a frequency is ftra, wherein a road is gone out through transmission antennas transmit, and a road is split into again in the frequency mixer of passage that two-way enters I, Q place respectively, and the signal of Q passage carries out the phase shift of 90 �� before mixing; Then, receiving antenna receives echoed signal, and after this echoed signal is carried out low noise amplification process, then carry out mixing through the two paths of signals of frequency mixer with shunting in real time respectively; Finally, the signal after mixing obtains I, Q two-way middle frequency difference signal frequently through intermediate frequency filtering amplification process, namely carries speed and the directional information of detection target in this I, Q two-way IF output signal; The last front flow rate of water flow gone out according to I and Q signal and according to following formulae discovery,
Wherein, fDFor Doppler frequency or difference frequency, f0For the transmitting frequency of radar, v is the velocity range of mobile, c0For the light velocity, �� is the angle between the actual direction of motion and sensor target line.
The invention has the beneficial effects as follows:
The present invention passes through technique scheme, can automatically complete canal capacity to measure, measurement is simple, easily, convenient, measuring accuracy height, and structure is simple, compact, it is convenient to carry, process for processing is easy, cost is low, equipment adopts non-contact measurement mode, measuring process does not need to drop in water, only need to be placed into and can measure above channel, the current of tested channel can not be destroyed, do not affect former water-flow equation, environmental adaptation ability is stronger, be conducive to applying, solve existing tradition water-measuring device lack of standardization, the technical problems such as amount water error is big and can not carry.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Fig. 1 is the structural principle schematic block diagram of a kind of radar canal capacity measuring system embodiment of the present invention;
Fig. 2 is the structural representation of a kind of radar canal capacity measuring system embodiment of the present invention;
Fig. 3 is the cut-away view of a kind of radar canal capacity measuring system embodiment of the present invention;
Fig. 4 is the schematic flow sheet of the measuring method of a kind of radar canal capacity measuring system of the present invention.
Embodiment
In order to make the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
As shown in Figure 1 to Figure 3, embodiments provide a kind of radar canal capacity measuring system, include PLC 1, flow rate detection device 2, level switch 3, input unit 4, display unit 5 and power supply 6. Wherein, described PLC 1 can be the outer controller (the additional FP0-A21 analog quantity I/O expanding element of the FP �� control module such as company of Panasonic) being added with analog quantity I/O expanding element, the measuring parameter being mainly used in flow velocity data and waterlevel data and input flow velocity detector 2 and level switch 3 sent processes, and calculates canal capacity; The radar sensor of described flow rate detection device 2 can be launching and receiving frequency be 24GHz, the survey flow rates of this sensor is 0.15��15m/s, operating range is 0.5��30m (such as the 24GHz microwave radar sensor that InnoSenT company of Germany produces), being mainly used in the flow velocity data that gather in current channel and send PLC 1 to, during detection, angle �� between the probe plane of radar sensor and horizontal plane is 30 �㡫60 �� (preferably 45 ��); Described level switch 3 can be ultrasonic transducer (the U-GAGET30UINA ultrasonic transducer such as Banner company of the U.S.), it measures distance is 150mm��1000mm, and each sensor all has an analog quantity and an output switch parameter end, it is mainly used in the waterlevel data that gathers in current channel and sends PLC 1 to; Described input unit 4 is mainly used in inputting steering order and measuring parameter to PLC 1; Described display unit 5 is mainly used in showing the measuring result of canal capacity; And, described flow rate detection device 2, level switch 3, input unit 4 and display unit 5 are all connected with PLC 1 conducting, and described power supply 6 can be chargeable 24V store battery, and it is electrically connected with each composition parts, supplies work energy.
In addition, described radar canal capacity measuring system includes shell 8 and flexible support 9, described PLC 1, flow rate detection device 2, level switch 3 and power supply 6 are all located in shell 8, and described touch-screen is embedded the front at shell 8, and the two ends up and down of shell 8 are located at by described flexible support 9; Described radar canal capacity measuring system includes touch-screen 7, and described input unit 4 and display unit 5 are respectively touch module and the display screen of touch-screen 7, and it is provided with the com interface that is used as RS485 and RS232 communication.
As shown in Figure 4, the testing method of radar canal capacity measuring system of the present invention, comprise: first input channel parameter, utilize radar sensor and ultrasonic transducer that channel surface flow rate of water flow and water level are carried out once above detection, then calculate canal cross section area and mean flow rate, finally calculate canal capacity. Wherein, described " utilizing radar sensor to the flow rate of water flow detection of channel surface " is specially: first, the oscillator vibrates of radar sensor sends the transmitting signal that a frequency is ftra, wherein a road is gone out through transmission antennas transmit, one tunnel is split into again in the frequency mixer of passage that two-way enters I, Q place respectively, and the signal of Q passage carries out the phase shift of 90 �� before mixing; Then, receiving antenna receives echoed signal, and after this echoed signal is carried out low noise amplification process, then carry out mixing through the two paths of signals of frequency mixer with shunting in real time respectively; Finally, the signal after mixing obtains I, Q two-way middle frequency difference signal frequently through intermediate frequency filtering amplification process, namely carries speed and the directional information of detection target in this I, Q two-way IF output signal; The last front flow rate of water flow gone out according to I and Q signal and according to following formulae discovery,
F in formulaDFor Doppler frequency or difference frequency, f0For the transmitting frequency of radar, v is the velocity range of mobile, c0For the light velocity, �� is the angle between the actual direction of motion and sensor target line.
Radar canal capacity measuring system of the present invention can automatically complete canal capacity by technology such as integrated application Radar Technology, ultrasonic technology, sensing technology, automatic control technology and computer technologies and measure, measurement is simple, light, convenient, measuring accuracy height, and structure is simple, compact, it is convenient to carry, process for processing is easy, environmental adaptation ability is stronger, cost is low, be conducive to applying, solve the technical problems such as existing tradition water-measuring device is lack of standardization, amount water error is big and can not carry.
The above is the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a radar canal capacity measuring system, it is characterised in that, include:
PLC (1), processes for the measuring parameter of the flow velocity data that flow velocity detector (2) and level switch (3) sent and waterlevel data and input, calculates canal capacity;
Flow rate detection device (2), for the flow velocity data that gather in current channel and send PLC (1) to;
Level switch (3), for the waterlevel data that gathers in current channel and send PLC (1) to;
Input unit (4), for inputting steering order and measuring parameter to PLC (1);
Display unit (5), for showing the measuring result of canal capacity;
And power supply (6), supply work energy to each composition parts;
And, described flow rate detection device (2), level switch (3), input unit (4) and display unit (5) are all connected with PLC (1) conducting, and described power supply (6) is electrically connected with each composition parts.
2. radar canal capacity measuring system according to claim 1, it is characterised in that, described flow rate detection device (2) is radar sensor, and described level switch (3) is ultrasonic transducer.
3. radar canal capacity measuring system according to claim 2, it is characterized in that, the radar sensor of described flow rate detection device (2) to be launching and receiving frequency be 24GHz, the survey flow rates of this sensor is 0.15��15m/s, and operating range is 0.5��30m; Described level switch (3) is the ultrasonic transducer measuring distance for 150mm��1000mm.
4. radar canal capacity measuring system according to claim 2, it is characterised in that, the angle �� scope between the probe plane of described radar sensor and horizontal plane is 30 �㡫60 ��.
5. radar canal capacity measuring system according to claim 1 or 2 or 3 or 4, it is characterized in that, described radar canal capacity measuring system includes touch-screen, and described input unit (4) and display unit (5) are respectively touch module and the display screen of touch-screen.
6. radar canal capacity measuring system according to claim 5, it is characterized in that, described radar canal capacity measuring system includes shell (8) and flexible support (9), described PLC (1), flow rate detection device (2), level switch (3) and power supply (6) are all located in shell (8), described touch-screen is embedded the front in shell (8), and described flexible support (9) is located at the two ends up and down of shell (8).
7. radar canal capacity measuring system according to claim 6, it is characterised in that, described power supply (6) is store battery.
8. the measuring method based on radar canal capacity measuring system described in the claims 2 or 3 or 5 or 6, it is characterized in that, comprise: first input channel parameter, utilize radar sensor and ultrasonic transducer that channel surface flow rate of water flow and water level are carried out once above detection, then calculate canal cross section area and mean flow rate, finally calculate canal capacity.
9. measuring method according to claim 8, it is characterised in that, described " utilizing radar sensor to the flow rate of water flow detection of channel surface " is specially:
First, the oscillator vibrates of radar sensor sends the transmitting signal that a frequency is ftra, wherein a road is gone out through transmission antennas transmit, and a road is split into again in the frequency mixer of passage that two-way enters I, Q place respectively, and the signal of Q passage carries out the phase shift of 90 �� before mixing; Then, receiving antenna receives echoed signal, and after this echoed signal is carried out low noise amplification process, then carry out mixing through the two paths of signals of frequency mixer with shunting in real time respectively; Finally, the signal after mixing obtains I, Q two-way middle frequency difference signal frequently through intermediate frequency filtering amplification process, namely carries speed and the directional information of detection target in this I, Q two-way IF output signal; The last front flow rate of water flow gone out according to I and Q signal and according to following formulae discovery,
Wherein, fDFor Doppler frequency or difference frequency, f0For the transmitting frequency of radar, v is the velocity range of mobile, c0For the light velocity, �� is the angle between the actual direction of motion and sensor target line.
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Cited By (13)
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| CN107632168A (en) * | 2017-09-27 | 2018-01-26 | 杭州开闳环境科技有限公司 | A kind of river course two dimension flow velocity and Flow Measuring System and method |
| CN107830903A (en) * | 2017-10-25 | 2018-03-23 | 傅古月 | A kind of microwave solid flowmeter detecting system and device |
| CN107860432A (en) * | 2017-12-08 | 2018-03-30 | 北京奥特美克科技股份有限公司 | A kind of flow measurement device and method |
| CN108570970A (en) * | 2018-06-29 | 2018-09-25 | 成都万江智控科技有限公司 | Gate, sluice control system and gate system |
| CN108627671A (en) * | 2018-03-12 | 2018-10-09 | 江苏大渠自动化科技有限公司 | Contactless water surface wave speed measuring device and speed-measuring method |
| CN108680237A (en) * | 2018-03-30 | 2018-10-19 | 无锡航征科技有限公司 | A kind of multifunction test platform and its test method |
| CN108917865A (en) * | 2018-07-11 | 2018-11-30 | 武汉新烽光电股份有限公司 | A kind of Doppler's flow velocity direction recognition device and control method |
| CN108951558A (en) * | 2018-06-29 | 2018-12-07 | 成都万江智控科技有限公司 | Sluice control system and method |
| WO2019080292A1 (en) * | 2017-10-25 | 2019-05-02 | 傅古月 | Microwave solid flowmeter detection system and device |
| CN110579251A (en) * | 2019-09-17 | 2019-12-17 | 浙江清环智慧科技有限公司 | Flow measuring method, device, system, electronic device and readable storage medium |
| WO2020020242A1 (en) * | 2018-07-27 | 2020-01-30 | 南方科技大学 | Wastewater flow measuring circuit and device |
| CN111551216A (en) * | 2020-06-03 | 2020-08-18 | 中国科学院地理科学与资源研究所 | Plain channel flow measurement equipment and method |
| CN114119318A (en) * | 2021-11-23 | 2022-03-01 | 珠海深圳清华大学研究院创新中心 | Medium and small flow monitoring system suitable for sponge city construction evaluation |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107632168A (en) * | 2017-09-27 | 2018-01-26 | 杭州开闳环境科技有限公司 | A kind of river course two dimension flow velocity and Flow Measuring System and method |
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| CN108627671A (en) * | 2018-03-12 | 2018-10-09 | 江苏大渠自动化科技有限公司 | Contactless water surface wave speed measuring device and speed-measuring method |
| CN108680237A (en) * | 2018-03-30 | 2018-10-19 | 无锡航征科技有限公司 | A kind of multifunction test platform and its test method |
| CN108951558A (en) * | 2018-06-29 | 2018-12-07 | 成都万江智控科技有限公司 | Sluice control system and method |
| CN108570970A (en) * | 2018-06-29 | 2018-09-25 | 成都万江智控科技有限公司 | Gate, sluice control system and gate system |
| CN108917865A (en) * | 2018-07-11 | 2018-11-30 | 武汉新烽光电股份有限公司 | A kind of Doppler's flow velocity direction recognition device and control method |
| CN108917865B (en) * | 2018-07-11 | 2019-12-03 | 武汉新烽光电股份有限公司 | A kind of Doppler's flow velocity direction recognition device and control method |
| WO2020020242A1 (en) * | 2018-07-27 | 2020-01-30 | 南方科技大学 | Wastewater flow measuring circuit and device |
| CN110579251A (en) * | 2019-09-17 | 2019-12-17 | 浙江清环智慧科技有限公司 | Flow measuring method, device, system, electronic device and readable storage medium |
| CN111551216A (en) * | 2020-06-03 | 2020-08-18 | 中国科学院地理科学与资源研究所 | Plain channel flow measurement equipment and method |
| CN111551216B (en) * | 2020-06-03 | 2023-06-23 | 中国科学院地理科学与资源研究所 | Plain channel flow measurement equipment and method |
| CN114119318A (en) * | 2021-11-23 | 2022-03-01 | 珠海深圳清华大学研究院创新中心 | Medium and small flow monitoring system suitable for sponge city construction evaluation |
| CN114119318B (en) * | 2021-11-23 | 2022-08-30 | 珠海深圳清华大学研究院创新中心 | Medium and small flow monitoring system suitable for sponge city construction evaluation |
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