CN202770444U - Water depth flow velocity self-operated measuring device - Google Patents
Water depth flow velocity self-operated measuring device Download PDFInfo
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- CN202770444U CN202770444U CN 201220443042 CN201220443042U CN202770444U CN 202770444 U CN202770444 U CN 202770444U CN 201220443042 CN201220443042 CN 201220443042 CN 201220443042 U CN201220443042 U CN 201220443042U CN 202770444 U CN202770444 U CN 202770444U
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Abstract
The utility model discloses a water depth flow velocity self-operated measuring device. The device comprises a measuring rod which is in a sliding connected with a machine case through a driving wheel, a motor is arranged in the machine case and controls the rotation of the driving wheel through a driving belt, a flow velocity sensor is fixed at the lower end of the measuring rod, a bakelite plate adheres to the lower portion of the flow velocity sensor, the thickness of the bakelite plate is smaller than or equal to 2mm, two metal wires are fixed on the bakelite plate, the heights of the two metal wires are smaller than 4mm, and the distance between the two metal wires is in a range from 10mm to 20mm. T he water depth flow velocity self-operated measuring device has the advantages that the automatic and continuous measurement of water depth flow velocity is firstly achieved, and the automation degree, the measurement efficiency and the location accuracy of the flow velocity measurement are remarkably improved.
Description
Technical field
The utility model belongs to river conservancy worker's field of measuring technique, relates to a kind of water depth flow speed self-operated measuring unit.
Background technology
In water conservancy project, river conservancy worker, harbour model test, usually need to measure the flow velocity of different water depth.The position of measuring point changes with the difference of the depth of water, and counting of vertical line orientation measurement also can be different because of the difference of the depth of water.For example, when the depth of water is more shallow, adopt one point method, only need to measure the flow velocity at the 0.6 times of depth of water place this moment; When the depth of water is darker, need to adopt multipoint method, as adopting three point method, namely measure the flow velocity at 0.2,0.6 and 0.8 times of depth of water place, or adopt five-spot, namely measure the flow velocity at surface, 0.2,0.6,0.8 times of depth of water place and water-bed place.
The location of the measurement of the depth of water and flow sensor is by manually finishing mostly before.Measure the corresponding depth of water by means of Other Instruments such as steel ruler, then flow sensor is navigated to corresponding depth of water point, the flow velocity of point-to-point measurement record each point.Whole process very complicated, very consuming time.Especially for large test model, measuring point reaches hundreds of and even thousands of point, and the depth of water of each point of pointwise manual measurement and the position of adjusting flow sensor are a very vast and numerous job, require a great deal of time and manpower.Therefore, river conservancy worker, harbour model test in the urgent need to a kind of can automatically finish the measurement of the depth of water and automatically in accordance with regulations measurement rule flow sensor navigated to specified point finish the device that flow velocity gathers.
The utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, and a kind of water depth flow speed self-operated measuring unit is provided, and realizes the automatic measurement of water depth flow speed, significantly improves the precision of fluid-velocity survey efficient, flow sensor positioning control.
Measure for the automatic synchronization of realizing water depth flow speed, water depth sensor and flow sensor need to be combined into one.After finishing bathymetric survey, and then carry out the measurement of vertical line each point flow velocity.Meanwhile, the Water depth measuring sensor volume is as far as possible little, thereby guarantees that stream field does not produce disturbance, is independent of each other with the measurement of guaranteeing both.
Flow sensor can be selected current version, can be the rotary propeller type flow sensor of commonly using, and also can be the flow sensor of other type.The utility model adopts two tiny tinsels as water depth sensor, cooperates resistance between suitable circuit measuring two tinsels, indirectly realizes bathymetric survey.Two tinsels are fixed on the bakelite plate, each other at a distance of 10 to 20mm.Two tinsel height are less than 4mm, and bakelite plate thickness is not more than 2mm, and water depth sensor is installed overall height and is no more than 6mm.The bakelite plate width is no more than the thickness of flow sensor frame beam.It is very little that institute adds the water depth sensor volume, effectively reduced disturbance and the additional fluid-velocity survey blind area of stream field.
The technical solution of the utility model is:
A kind of water depth flow speed self-operated measuring unit comprises a measuring staff, is slidingly connected by power wheel and cabinet, and the cabinet built-in motor is by the rotation of driving-belt control power wheel;
Measuring staff lower end fixed flow rate sensor, flow sensor bottom adhesive glue plank, bakelite plate thickness is not more than 2mm; Two tinsels are fixed on the bakelite plate, and two tinsel height are less than 4mm, each other at a distance of 10 to 20mm.
The built-in metering circuit of cabinet and control circuit, metering circuit that two tinsels are connected with cabinet connects, and indirectly realizes the measurement of the depth of water by measuring resistance between two tinsels; Control circuit is according to the needs of measuring, and the control measuring staff moves up and down.
Described flow sensor can be rotary propeller type, electromagnetic type, hot wire type, the ultrasonic formula flow sensor of strangling.
Described tinsel can be for stainless steel wire, copper wire or through other tinsel of antirust processing.
The principle of bathymetric survey: when two tinsels were positioned at water surface top, two interelectrode media were air, and the resistance between two tinsels is very high, bridge circuit output this moment high level VH, as shown in Figure 2.When two tinsels move down when touching the water surface, because the electric conductivity of water body is more much better than than air, so resistance sharply reduces between two tinsels, output voltage fast-descending VL district in the figure.According to this catastrophe characteristics of voltage, instrument can judge that two tinsels touch the water surface and record current water surface site, and subsequently device control measuring staff continues to move downward, and the resistance between two tinsels can further reduce, and circuit output voltage also can descend gradually; When two tinsels during near bed surface, the electric conductivity of bed surface solid dielectric is significantly different from water body, can cause the again sudden change of voltage.Usually the resistance of the resistance ratio water body of bed surface is much bigger, so the resistance when touching bed surface between two tinsels can significantly increase, cause circuit output voltage obviously to rise, can judge that according to this variation characteristic of output voltage two tinsels touch bed surface, device records current location and subtracts each other with water surface site, obtain the depth of water of current point, thereby finish the vertical line bathymetric survey.
After finishing bathymetric survey, water depth flow speed self-operated measuring unit of the present utility model can be according to the measurement rule of prior setting, and the flow sensor that automatically will be fixed on same measuring staff rises to the depth of water place of appointment, finishes the collection of corresponding point flow velocity.The fluid-velocity survey process is finished from bottom to top successively.
The utility model is realized the Automatic continuous measurement of water depth flow speed first, has significantly improved automaticity, measurement efficient and the bearing accuracy of fluid-velocity survey, for the Fast synchronization collection that realizes the multiple spot flow velocity provides effectively technical support.Indirectly realize bathymetric survey by measuring resistance, design ingeniously, reduced to greatest extent the impact on current.
Description of drawings
Fig. 1, the utility model water depth flow speed self-operated measuring unit structural representation.Wherein, 1-measuring staff, 2-power wheel, 3-cabinet, 4-motor, 5-driving-belt, 6-flow sensor, 7-bakelite plate, 8-tinsel.
The change in voltage situation of Fig. 2, different water depth.
Embodiment
As shown in Figure 1, a kind of water depth flow speed self-operated measuring unit comprises a measuring staff, is slidingly connected by power wheel wheel and cabinet, and the cabinet built-in motor is by the rotation of driving-belt control power wheel;
Measuring staff lower end fixed flow rate sensor, flow sensor bottom adhesive glue plank, bakelite plate thickness is not more than 2mm; Two tinsels are fixed on the bakelite plate, and two tinsel height are less than 4mm, each other at a distance of 10 to 20mm.
The built-in metering circuit of cabinet and control circuit, metering circuit that two tinsels are connected with cabinet connects, and indirectly realizes the measurement of the depth of water by measuring resistance between two tinsels; Control circuit is according to the needs of measuring, and the control measuring staff moves up and down.
Embodiment one
Flow sensor has adopted the structure of photoelectricity rotary propeller type, and water movement promotes to revolve oar and rotates, and the speed of revolving the oar rotation is directly proportional with flow velocity, just can obtain corresponding flow velocity so measure the rotating speed that revolves oar.The edge side that revolves the blade of oar is coated with high reflecting material, when the bright blade edge of plating rotates bottom to photoelectricity side head, to produce a reflection light pulse signal, convert an electric impulse signal to through metering circuit, install interior counting circuit with the umber of pulse of recording prescribed correspondence in the time, and calculate corresponding flow velocity according to the relation that prior rate is reserved.
Its course of work is: after the water depth flow speed self-operated measuring unit start of the present utility model, the control measuring staff automatically resets to zero point, and instrument is ready.When beginning to measure, device control electric machine rotation drives measuring staff and moves downward, and the metering circuit in the cabinet records the distance that measuring staff moves at any time.When two tinsels touched the water surface, the resistance between two tinsels sharply descended so that the bridge circuit output voltage sharply descends, and after metering circuit captures voltage reduction signal, writes down immediately current location, i.e. the position of the water surface.Measuring staff continues to move downward subsequently, when potential electrode during near to or in contact with bed surface, resistance significantly increases between two tinsels, bridge voltage also significantly rises thereupon, after metering circuit captures the remarkable rising of voltage signal, stop immediately moving downward of measuring staff, record the position of current bed surface, and calculate the corresponding depth of water according to bed surface and water surface site.According to the fluid-velocity survey rule of default, position and carry out the collection of flow velocity to revolving the oar gauge head again.For example, when measuring rule and be chosen to be 1 method, device navigates to flow sensor automatically apart from 0.6 times of depth of water place of the water surface, automatically according to the sampling time of setting in advance, counts revolving the number of turns that oar rotates, and carries out altogether 5 duplicate measurementss.Device automatically calculated corresponding flow velocity and is kept in the storer in the device after counting was finished.If be chosen to be 3 methods, then successively flow sensor navigated to apart from 0.8 times of the water surface, 0.6 times and 0.2 times of depth of water place and gather and preserve the flow speed value of respective point.
The utility model device can link to each other with computing machine by communication interface.When host computer needed reading out data, host computer sent the order of calling and uploading data to device, and device is passed to host computer with measurement data after receiving calling and uploading data instruction.Device can adopt serial communication or network interface communication mode with the communication mode of host computer.Host computer can directly be controlled the work of this device and read measurement data by communication mode.
For the ease of the expansion of system, device has adopted point-to-points communication pattern, adopts RS485(or network service) interface, can realize a computing machine to the control of many water depth flow speed self-operated measuring units, thereby consist of multichannel water depth flow speed measuring system.Hardware during simultaneously for the ease of system extension connects, and the power interface of device and communication interface have all adopted the pattern of one-in-and-one-out, and system extension is very convenient.
Claims (3)
1. a water depth flow speed self-operated measuring unit comprises measuring staff (1), is slidingly connected by power wheel (2) and cabinet (3), and cabinet (3) built-in motor (4) is by the rotation of driving-belt (5) control power wheel (2);
Measuring staff (1) lower end fixed flow rate sensor (6), flow sensor bottom adhesive glue plank (7), bakelite plate thickness is not more than 2mm; Two tinsels (8) are fixed on the bakelite plate (7), and two tinsel height are less than 4mm, each other at a distance of 10 to 20mm.
2. water depth flow speed self-operated measuring unit according to claim 1 is characterized in that, flow sensor is rotary propeller type, electromagnetic type or ultrasonic Doppler formula flow sensor.
3. water depth flow speed self-operated measuring unit according to claim 1 is characterized in that, described tinsel is stainless steel wire or copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220443042 CN202770444U (en) | 2012-09-03 | 2012-09-03 | Water depth flow velocity self-operated measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220443042 CN202770444U (en) | 2012-09-03 | 2012-09-03 | Water depth flow velocity self-operated measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN202770444U true CN202770444U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220443042 Expired - Fee Related CN202770444U (en) | 2012-09-03 | 2012-09-03 | Water depth flow velocity self-operated measuring device |
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| CN (1) | CN202770444U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891541A (en) * | 2016-06-13 | 2016-08-24 | 南京世海声学科技有限公司 | ADCP surface layer blind area flow velocity estimation method based on interlayer correlation |
| CN111024979A (en) * | 2019-12-09 | 2020-04-17 | 河海大学 | Depth-measurable current meter |
| CN112284337A (en) * | 2020-11-25 | 2021-01-29 | 武汉大学 | River model multi-parameter measuring device and walking control method thereof |
-
2012
- 2012-09-03 CN CN 201220443042 patent/CN202770444U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891541A (en) * | 2016-06-13 | 2016-08-24 | 南京世海声学科技有限公司 | ADCP surface layer blind area flow velocity estimation method based on interlayer correlation |
| CN111024979A (en) * | 2019-12-09 | 2020-04-17 | 河海大学 | Depth-measurable current meter |
| CN111024979B (en) * | 2019-12-09 | 2021-06-25 | 河海大学 | Depth-measurable current meter |
| CN112284337A (en) * | 2020-11-25 | 2021-01-29 | 武汉大学 | River model multi-parameter measuring device and walking control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20170903 |