CN202854166U - Portable acoustic doppler flow velocity instrument - Google Patents
Portable acoustic doppler flow velocity instrument Download PDFInfo
- Publication number
- CN202854166U CN202854166U CN 201220524084 CN201220524084U CN202854166U CN 202854166 U CN202854166 U CN 202854166U CN 201220524084 CN201220524084 CN 201220524084 CN 201220524084 U CN201220524084 U CN 201220524084U CN 202854166 U CN202854166 U CN 202854166U
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- microprocessor
- control
- extension machine
- transmit
- receive
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Disclosed in the utility model is a portable acoustic doppler flow velocity instrument that comprises an overwater extension machine and an underwater extension machine, wherein the overwater extension machine and the underwater extension machine are connected by a cable. The portable acoustic doppler flow velocity instrument is characterized in that the overwater extension machine includes a control circuit, a display screen, keys, wherein the control circuit is composed of a microprocessor, a power supply portion, an emission portion, a receiving portion, a key control portion and a display control portion and the microprocessor controls key inputting and display output; and the underwater extension machine includes a transmit-receive all-in-one energy transducer. Besides, the microprocessor generates an emission control signal; the transmit-receive all-in-one energy transducer is excited by the emission portion; the receiving portion receives an echo signal of the transmit-receive all-in-one energy transducer and returns the signal to the microprocessor for processing. When the transmit-receive all-in-one energy transducer is installed, a measurement rod is placed into water; and an included angle between the emitted supersonic wave and the tested fluid is 10 degrees to 30 degrees. According to the utility model, the transmit-receive all-in-one energy transducer and the hand-held overwater extension machine are used, so that advantages of miniaturization, integration, portability and simple and convenient operation of the acoustic doppler flow velocity instrument can be realized well.
Description
Technical field
The utility model relates to a kind of current meter, particularly about a kind of portable acoustics doppler velocimeter.
Background technology
Ultrasound wave is owing to its good water transmission characteristic is widely used in the underwater survey field.With the ultrasonic measurement water velocity a variety of methods are arranged, mainly contain acoustic beam deflection method, ultrasonic time difference method, ultrasonic Doppler method etc.
The acoustic beam deflection method is by measuring acoustic beam because the direction deviation angle that current cause obtains water velocity, only being suitable for water velocity in the measuring channel.Ultrasound wave time difference rule is to utilize the difference of sound wave velocity of propagation in the co-current flow and counter-current flow situation to measure water velocity, but this method complex structure, cost are high, should not adopt.The supersonic Doppler method utilizes Doppler effect to measure flow velocity.
Existing most of portable Flow Velocity Meter have a plurality of ultrasonic transducers, are unfavorable for miniaturization, the low cost of portable acoustics doppler velocimeter.
Summary of the invention
Therefore, for solving the problems of the technologies described above, the purpose of this utility model provides a kind of portable acoustics doppler velocimeter, adopt the very little single transceiver transducer of volume, utilize the acoustic Doppler principle to measure rate of flow of fluid, the signal ratio is easier to process, and can reach purpose easy and simple to handle.
For achieving the above object, the utility model is taked following technical scheme: a kind of portable acoustics doppler velocimeter, be divided into extension set waterborne and extension set two parts under water, connected by cable, it is characterized in that: extension set waterborne is by control circuit, display screen, button forms, described control circuit is again by microprocessor, power unit, radiating portion, receiving unit, by key control and demonstration controlling composition, described power unit, radiating portion, receiving unit, all be electrically connected with microprocessor by key control and demonstration control, described button and button control linkage, described display screen and demonstration control linkage, described microprocessor control key-press input and demonstration output; Extension set comprises the transceiver transducer under water, described radiating portion, receiving unit are electrically connected with it, and described microprocessor produces emissioning controling signal, excites the transceiver transducer by radiating portion, receiving unit receives transceiver transducer echoed signal, and loopback is to microprocessor processes.
Described transceiver transducer places under water by a sounding rod when mounted, makes the ultrasound wave of emission become 10 °～30 ° with detected fluid.
The utility model is owing to take above technical scheme, and it has the following advantages: the utility model adopts the transceiver transducer, and extension set on the handheld water, is more conducive to the miniaturization, integrated, portable, easy and simple to handle of acoustic Doppler velocimetry.
Description of drawings
Fig. 1 is portable acoustics doppler velocimeter schematic appearance;
Fig. 2 is composition and the control graph of a relation of portable acoustics doppler velocimeter;
Fig. 3 is transceiver transducer mounting means figure.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, this portable acoustics doppler velocimeter mainly by extension set waterborne and under water extension set two parts form employing on-line outward appearance.Extension set waterborne is respectively two stand-alone products with extension set under water, connects by cable each other.
As shown in Figure 2, extension set waterborne is comprised of control circuit 11, display screen 12, button 13.
Control circuit 11 mainly finish emissioning controling signal generation, receive that signal is processed, display screen control, by functions such as key control.Control circuit 11 is by microprocessor 111, power unit 112, radiating portion 113, receiving unit 114, by key control 115 with show that control 116 forms.Microprocessor 111 is mainly finished and is produced emissioning controling signal, receives signal and processes, shows control output and key-press input response; Power unit 112 main completing circuit power supplies; Radiating portion 113 is mainly finished and is produced the electric pulse excitation transceiver transducer 21 with certain output power, one fixed width; Receiving unit 114 is mainly finished the signal that with faint echoed signal amplification, filtering, shaping, relatively is met requirement; Show that controlling 115 finishes 12 demonstrations of control display screen; Mainly finish the input of response button 13 by key control 116.
Extension set mainly is comprised of transceiver transducer 21 under water.It is ultrasound wave that transceiver transducer 21 is mainly finished electric energy conversion, and echoed signal is converted to the functions such as electric flux.Transceiver transducer mounting means as shown in Figure 3, transceiver transducer 21 is installed on the sounding rod 22 with fixed angle (becoming 10 °～30 ° with level), during flow measurement, the ultrasound wave of transceiver transducer 21 emissions becomes fixed angle θ (namely 10 °～30 °) with detected fluid, the instrument stream field produces interference hardly.
Measuring process:
1) connects extension set waterborne, extension set under water with cable;
2) hand-held sounding rod stretches into the transceiver transducer in the water;
3) the upper Exgt Bat extension battery of fetching boiling water shows starting-up interface;
4) by " numbering " button, input current measurement point numbering;
5) press " determining " key, begin to measure display screen display measurement flow speed value;
6) press " preservation " key, preserve current measuring point measured value;
7) change the measurement place, repeat 4)～6) operation, duplicate measurements;
8) measurement is complete, save data, shutdown.
Claims (1)
1. portable acoustics doppler velocimeter is divided into extension set waterborne and extension set two parts under water, is connected by cable, it is characterized in that:
Extension set waterborne is comprised of control circuit, display screen, button, described control circuit again by microprocessor, power unit, radiating portion, receiving unit, by key control with show controlling composition, described power unit, radiating portion, receiving unit, by key control with show that control all is electrically connected with microprocessor, described button and button control linkage, described display screen and demonstration control linkage, described microprocessor control key-press input and demonstration output;
Extension set comprises the transceiver transducer under water, and described radiating portion, receiving unit are electrically connected with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524084 CN202854166U (en) | 2012-10-14 | 2012-10-14 | Portable acoustic doppler flow velocity instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524084 CN202854166U (en) | 2012-10-14 | 2012-10-14 | Portable acoustic doppler flow velocity instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854166U true CN202854166U (en) | 2013-04-03 |
Family
ID=47985349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220524084 Expired - Fee Related CN202854166U (en) | 2012-10-14 | 2012-10-14 | Portable acoustic doppler flow velocity instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630707A (en) * | 2013-11-19 | 2014-03-12 | 长安大学 | Device and method for detecting flow speed and depth of water flow on road surface in rainy days |
| CN103995147A (en) * | 2014-05-05 | 2014-08-20 | 河海大学 | Data postprocessing system applicable to acoustic Doppler current meter and application thereof |
-
2012
- 2012-10-14 CN CN 201220524084 patent/CN202854166U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630707A (en) * | 2013-11-19 | 2014-03-12 | 长安大学 | Device and method for detecting flow speed and depth of water flow on road surface in rainy days |
| CN103995147A (en) * | 2014-05-05 | 2014-08-20 | 河海大学 | Data postprocessing system applicable to acoustic Doppler current meter and application 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 |
Granted publication date: 20130403 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |