CN105334261A - Liquid oxygen content detection system and method - Google Patents
Liquid oxygen content detection system and method Download PDFInfo
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- CN105334261A CN105334261A CN201410330776.XA CN201410330776A CN105334261A CN 105334261 A CN105334261 A CN 105334261A CN 201410330776 A CN201410330776 A CN 201410330776A CN 105334261 A CN105334261 A CN 105334261A
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Abstract
The present invention provides a liquid oxygen content detection system and method. The system includes an image detection device, an image processing device and a high intensity ultrasonic generator. The high intensity ultrasonic generator is used for generating high intensity ultrasound; and the high intensity ultrasound generated by the high intensity ultrasonic generator irradiates the liquid to be measured, so that oxygen dissolved in the liquid to be measured absorbs ultrasonic energy, expands, and forms bubbles. The image detection device is used for collecting the image signal of the bubbles formed by the gas in the liquid to be measured. The image processing device is used for calculating the bubble content per unit area according to the image signal collected by the image detection device, so as to determine the oxygen content of the liquid to be measured. The scheme can make the oxygen dissolved in the water form bubbles, and make the bubble detection easier, so as to improve the detection precision. The scheme does not need additional chemical drugs or electrification for water, and has the advantages of fast, safe and convenient detection, and low detection cost.
Description
Technical field
The present invention relates to ultrasonic detecting technology field, be specifically related to a kind of utilize ultrasonic technique to realize liquid containing oxygen amount detection systems and method.
Background technology
High-strength focusing ultrasonic therapy needs WATER AS FLOW MEDIUM ultrasonic to propagate, and utilizes transducer to send ultrasound wave and enters human foci area to implement treatment.Treat safely and effectively to reach, require higher to WATER AS FLOW MEDIUM, the molten amount of oxygen of General Requirements WATER AS FLOW MEDIUM is less than certain value, otherwise when carrying out high-strength focusing ultrasonic therapy, energy attenuation is larger, the ultrasonic energy entering focus greatly reduces, not only affect result for the treatment of, also can the extended treatment time, increase Operative risk.Therefore, when high-strength focusing ultrasonic therapy, need to utilize water disposal facility to carry out degassed (deoxidation) process to water, and then using through degassed treated water as ultrasound conductive medium during high-strength focusing ultrasonic therapy, i.e. WATER AS FLOW MEDIUM.
A kind of detection scheme of WATER AS FLOW MEDIUM oxygen level is, regularly adopt third party's testing tool to WATER AS FLOW MEDIUM by checker, such as dissolved oxygen meter, detects.But dissolved oxygen meter generally adopts electrochemical process to measure dissolved oxygen in water, and detection speed is slow, and accuracy of detection is easy to the impact being subject to manual operation, and the price of dissolved oxygen meter is not cheap yet.
Also have a kind of ultrasonic bubble to detect the detection scheme of WATER AS FLOW MEDIUM oxygen level at present, utilize the bubble in supersonic sounding WATER AS FLOW MEDIUM, detect the echoed signal that bubble produces, and this echoed signal is processed, calculated, obtain the oxygen level of WATER AS FLOW MEDIUM.But, not only containing bubble in WATER AS FLOW MEDIUM, some oxygen be dissolved in the water, and the detection scheme of this WATER AS FLOW MEDIUM oxygen level can only detect the bubble in WATER AS FLOW MEDIUM, the oxygen be dissolved in the water then cannot detect, therefore, accuracy of detection is poor.
Therefore, a kind of liquid containing oxygen amount detection scheme is needed badly, to solve the problems of the technologies described above.
Summary of the invention
The present invention is directed to above shortcomings in prior art, a kind of liquid containing oxygen amount detection systems and method are provided, in order to solve WATER AS FLOW MEDIUM measurement of oxygen content low precision, detection speed is slow, testing cost is high problem.
The present invention, for solving the problems of the technologies described above, adopts following technical scheme:
The invention provides a kind of liquid containing oxygen amount detection systems, comprising: image detection device, image processing apparatus and high strength supersonic wave generating device;
High strength supersonic wave generating device is used for, and produces high-strength ultrasonic, and the high-strength ultrasonic utilizing high strength supersonic wave generating device to produce irradiates testing liquid, forms bubble to make the gas in described testing liquid;
Image detection device is used for, and gathers the picture signal of the bubble that the gas in described testing liquid is formed;
Image processing apparatus is connected with image detection device, for the picture signal gathered according to image detection device, and the air bubble content of unit of account area.
Preferably, described high strength supersonic wave generating device comprises: ultrasonic energy controller and transducer;
Ultrasonic energy controller is connected with described image processing apparatus with transducer respectively, for generation of high-frequency current, and described high-frequency current is sent to transducer;
Transducer is arranged in the container for storing described testing liquid, and below the liquid level being arranged at described testing liquid, high frequency current transitions for being sent by ultrasonic energy controller is high-strength ultrasonic, and utilizes described high-strength ultrasonic to irradiate described testing liquid.
Preferably, described image processing apparatus is also connected with described high strength supersonic wave generating device, is preset with the first timer and the first timing duration in described image processing apparatus;
Described image processing apparatus is used for, and sends the first enabling signal to described high strength supersonic wave generating device, and when sending the first enabling signal to described high strength supersonic wave generating device, the first timer starts timing; And, when the first timing duration arrives, send the first stop signal to described high strength supersonic wave generating device;
Described high strength supersonic wave generating device specifically for, receive described image processing apparatus send the first enabling signal time, produce high-strength ultrasonic; And, when receiving the first stop signal that described image processing apparatus sends, stop producing high-strength ultrasonic.
Preferably, described image detection device comprises: ultrasonic probe and supersonic imaging apparatus, and ultrasonic probe is arranged at below the liquid level of described testing liquid;
Ultrasonic probe is connected with described image processing apparatus with supersonic imaging apparatus respectively, for, according to the control of described image processing apparatus, produce detecting ultrasonic ripple, utilize detecting ultrasonic ripple to irradiate described testing liquid; And receive echoed signal, and described echoed signal is sent to supersonic imaging apparatus, wherein, described echoed signal is that the bubble that described detecting ultrasonic ripple runs in testing liquid produces; And, according to the control of described image processing apparatus, stop producing detecting ultrasonic ripple;
Supersonic imaging apparatus is connected with described image processing apparatus, for the echoed signal received is converted to ultrasound image signal, and described ultrasound image signal is sent to described image processing apparatus;
Described image processing apparatus specifically for, according to supersonic imaging apparatus send ultrasonic imaging signal, the air bubble content of unit of account area.
Further, be also preset with the second timer, the 3rd timer, the second timing duration and the 3rd timing duration in described image processing apparatus, wherein, the first timing duration is greater than the 3rd timing duration and is greater than the second timing duration;
Described image processing apparatus also for, when first timing duration arrive time, the second timer starts timing; When the second timing duration arrives, the 3rd timer starts timing, and sends the second enabling signal to ultrasonic probe, produces detecting ultrasonic ripple to control ultrasonic probe; When the 3rd timing duration arrives, send the second stop signal to ultrasonic probe, stop producing detecting ultrasonic ripple to control ultrasonic probe.
Preferably, described first timing duration is 2-5S, and described second timing duration is 0.1-0.5S.
Preferably, described image detection device is optical image acquisition device;
Described optical image acquisition device is arranged at below the liquid level of described testing liquid, specifically for, when described high strength supersonic wave generating device utilizes the high-strength ultrasonic produced to irradiate described testing liquid, in the direction of the plane-parallel with described testing liquid, gather the optical image signal of the bubble that the gas in described testing liquid is formed;
Described image processing apparatus specifically for, according to optical image acquisition device gather optical image signal, the air bubble content of unit of account area.
Further, described image processing apparatus also for, when sending the first enabling signal to described high strength supersonic wave generating device, send the 3rd enabling signal to described optical image acquisition device; And, when the first timing duration arrives, send the 3rd stop signal to described optical image acquisition device;
Described optical image acquisition device specifically for, when receiving the 3rd enabling signal that described image processing apparatus sends, in the direction of the plane-parallel with described testing liquid, gather the optical image signal of the bubble that gas in described testing liquid is formed; When receiving the 3rd stop signal that described image processing apparatus sends, stop the optical image signal gathering the bubble that the gas in described testing liquid is formed.
Further, the air bubble content of unit area and the corresponding relation of the molten amount of oxygen is also preset with in described image processing apparatus;
Described image processing apparatus also for, inquire about the air bubble content of described unit area and the corresponding relation of the molten amount of oxygen according to the air bubble content of the unit area calculated, obtain the molten amount of oxygen that the air bubble content of described unit area is corresponding.
Further, also first threshold is preset with in described image processing apparatus; Described image processing apparatus also for, by the air bubble content of unit area that calculates compared with described first threshold, when the air bubble content of described unit area is greater than described first threshold, report to the police; Or,
Also Second Threshold is preset with in described image processing apparatus; Described image processing apparatus also for, by the molten amount of oxygen corresponding for the air bubble content of the described unit area obtained compared with described Second Threshold, when the molten amount of the oxygen that the air bubble content of described unit area is corresponding is greater than described Second Threshold, report to the police.
The present invention also provides a kind of liquid containing oxygen quantity measuring method, comprises the following steps: to liquid propellant high-strength ultrasonic to be measured, forms bubble to make the gas in described testing liquid;
In selection testing liquid, an alveolate region is as region to be measured, and calculates the air bubble content of the unit area in region to be measured.
Preferably, in described selection testing liquid, an alveolate region is as region to be measured, and calculates the air bubble content of unit area in region to be measured, specifically comprises:
Gather the image of the bubble that the gas in described testing liquid is formed, on the image gathered, a selected region that bubble is the most concentrated is as region to be measured, and calculates the total number of pixels in described region to be measured;
Identify the bubble in described region to be measured, and calculate the summation of the number of pixel shared by the bubble in described region to be measured;
By calculating total number of pixels in described region to be measured and the ratio of the summation of the number of pixel shared by the bubble in described region to be measured, obtain the air bubble content of unit area.
The present invention can utilize high strength supersonic wave generating device to produce high-strength ultrasonic, and high-strength ultrasonic is irradiated testing liquid, expand after making the being dissolved in oxygen absorption ultrasound intensity amount in testing liquid, and form bubble, image detection device can be utilized to gather the picture signal of bubble, and image processing apparatus can be utilized according to the air bubble content of the picture signal unit of account area of bubble, thus determine the oxygen level of testing liquid, the program not only can detect the gas having formed bubble original in testing liquid, the oxygen be dissolved in the water can also be made to form bubble, make the detection of bubble more easy and more accurate, thus raising accuracy of detection, this programme is without the need to additionally applying chemicals, and also without the need to being energized to water, detection speed is fast, and safe ready, testing cost is cheap.
Accompanying drawing explanation
The structural representation of the liquid containing oxygen amount detection systems that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the liquid containing oxygen amount detection systems that Fig. 2 provides for the embodiment of the present invention 1;
The structural representation of the liquid containing oxygen amount detection systems that Fig. 3 provides for the embodiment of the present invention 2.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, carry out clear, complete description to the technical scheme in the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
The present invention is by applying the ultrasonic energy of higher-strength to liquid, because dissolved gases in liquid has very strong blocking reflected effect to ultrasonic, the portion gas be wherein dissolved in liquid can absorb ultrasonic energy and expand, form bubble, and existing bubble can expand into enough large in liquid, even make bubble naked eyes visible, now, by detecting the content through the postradiation bubble in liquid of high strength supersonic, to detect the oxygen level of testing liquid.Image detection device such as can be utilized to detect the liquid irradiated through high strength supersonic, if a certain amount of bubble can be detected on generated image, then show that bubble is more containing a certain amount of gas in liquid, then illustrate that liquid air content is higher.
The invention provides a kind of liquid containing oxygen quantity measuring method, it comprises the following steps:
To liquid propellant high-strength ultrasonic to be measured, form bubble to make the gas in described testing liquid;
Select to form an alveolate region as region to be measured in testing liquid, and calculate the air bubble content of unit area in region to be measured.
The present invention also provides a kind of liquid containing oxygen amount detection systems, especially detects the oxygen level of the WATER AS FLOW MEDIUM for high-strength focusing ultrasonic therapy, thus determines whether this WATER AS FLOW MEDIUM reaches the oxygen level requirement of high-strength focusing ultrasonic therapy.The liquid containing oxygen amount detection systems configuration diagram that Fig. 1 provides for the embodiment of the present invention, this liquid containing oxygen amount detection systems can comprise: image detection device 1, image processing apparatus 2 and high strength supersonic wave generating device 3, high strength supersonic wave generating device 3 for, produce high-strength ultrasonic, the high-strength ultrasonic utilizing high strength supersonic wave generating device to produce irradiates testing liquid, to make the gas in testing liquid form bubble, wherein, testing liquid can be water.Image detection device 1 for, the gas gathered in testing liquid forms the picture signal of bubble.Image processing apparatus 2 is connected with image detection device 1, for the picture signal gathered according to image detection device 1, and the air bubble content of unit of account area.
Preferably, image processing apparatus 2 can adopt image processing algorithm (such as, adopt edge detection algorithm or Binarization methods etc.) air bubble content of unit of account area, namely on the image of image detection device 1 collection, a region that bubble is the most concentrated is set as region to be measured, extract this region to be measured, calculate the total number of pixels in this region to be measured, be designated as sumAll, then the bubble in this region to be measured is identified out, and calculate the summation of the number of pixel shared by bubble, be designated as sumP, and the percentage composition pRate=sumP/sumAll*100% of bubble.
Display unit and input block can be included in preferred image treating apparatus, described display unit is connected with image detection device 1, picture signal for gathering image detection device 1 shows, select subregion as region to be measured in the image that user is shown at display unit by input block, image processing apparatus 2 calculates the air bubble content of unit area in region to be measured.Preferably, display unit can be display screen, and input block can be the equipment such as mouse, keyboard.
Certainly, if the position in region to be measured can be determined, also image detection device 1 can be made only to gather (such as can be realized by arranging of the position to image detection device) the image in region to be measured, like this, the picture signal that graphics processing unit gathers according to image detection device, just directly can calculate the air bubble content of unit area in this region to be measured.
In embodiments of the present invention, high-strength ultrasonic refers to sound intensity >10W/cm
2ultrasound wave.
The present invention utilizes high strength supersonic wave generating device to produce high-strength ultrasonic, and high-strength ultrasonic is irradiated testing liquid, expand after making the ultrasonic energy of this high-strength ultrasonic of oxygen absorption be dissolved in testing liquid, and form bubble, image detection device is utilized to gather the picture signal of bubble, and utilize image processing apparatus according to the air bubble content in the picture signal unit of account area of bubble, thus determine the oxygen level of testing liquid, the program not only can detect bubble original in testing liquid, the oxygen be dissolved in testing liquid (water) can also be made to form bubble, make the detection of bubble more easy, and improve accuracy of detection, this programme is without the need to additionally applying chemicals to testing liquid, and also without the need to being energized to testing liquid, detection speed is fast, and safe ready, testing cost is cheap.
Preferably, high strength supersonic wave generating device 3 can comprise: ultrasonic energy controller 31 and transducer 32.
Ultrasonic energy controller 31 is connected with image processing apparatus 2 with transducer 32 respectively, for generation of high-frequency current, and the high-frequency current of generation is sent to transducer 32, to make transducer 32 by the high-frequency ultrasonic of different high frequency current transitions for different acoustic energy.
Transducer 32 can be arranged at for storing in the container of testing liquid, and below the liquid level being arranged at testing liquid, high frequency current transitions for being sent by ultrasonic energy controller 31 is high-strength ultrasonic, and utilizes described high-strength ultrasonic to irradiate testing liquid.
Below liquid level transducer 32 being arranged at testing liquid, be to enable the high-strength ultrasonic useful effect of generation in testing liquid, to ensure that the ultrasound wave that transducer 32 sends can act on testing liquid completely.High-strength ultrasonic is irradiated testing liquid, to allow the oxygen of the dissolving in testing liquid or bubble absorb ultrasound wave, occur to separate out and expand, can more easily be detected, above-mentioned region to be measured is usually located at the position of below the center liquid level in ultrasonic irradiation district.Therefore, transducer 32 can be arranged at the bottom of the container storing testing liquid.
Larger in order to allow air bubble expansion obtain, be more easily detected, transducer 32 can be preferably high-intensity focusing ultrasonic wave transducer.The wave beam of high-intensity focusing ultrasonic wave converges, and high-strength ultrasonic may be parallel, high-strength ultrasonic can be converged by focusing on, thus obtain higher ultrasound intensity.
In order to ensure the Detection results of oxygen level, need to ensure that areas accept to be measured is to hyperacoustic sound intensity >10W/cm
2(10 watts every square centimeter), is preferably 20W ~ 50W/cm
2.
The He Ne laser scope of high-intensity focusing ultrasonic wave is between 0.7MHz-1.6Mhz, to ensure that in water, gas has higher absorption rate to ultrasonic energy.
Accordingly, selected ultrasonic energy controller 31 and transducer 32 are the equipment can supporting the above-mentioned sound intensity and high-strength ultrasonic frequency.
The high-strength ultrasonic irradiating liquids produced owing to utilizing high-intensity focusing ultrasonic wave transducer, cavitation phenomenon can be there is in the focal position of high intensity focused ultrasound, namely cavity is produced, and cavity may to be mistaken as be bubble, thus have influence on accuracy of detection, therefore, preferred region to be measured may be selected in transducer 32 axis on and in the scope of 2 ~ 5cm below focus.The bubble observed within the scope of this is maximum, and can not be subject to the impact of cavitation effect.
Preferably, in actual use, operator can by controlling image processing apparatus 2, control the start and stop of high strength supersonic wave generating device 3, therefore, image processing apparatus 2 is connected with high strength supersonic wave generating device 3, is preset with the first timer and the first timing duration in image processing apparatus 2.
Image processing apparatus 2 for, when receiving the instruction of the open system that user sends, the first enabling signal is sent to high strength supersonic wave generating device 3, open to control high strength supersonic wave generating device 3, now (when namely sending the first enabling signal to high strength supersonic wave generating device 3), the first timer starts timing.And when the first timing duration arrives, image processing apparatus 2, for sending the first stop signal to high strength supersonic wave generating device 3, stops controlling high strength supersonic wave generating device 3.
High strength supersonic wave generating device 3 specifically for, receive image processing apparatus 2 send the first enabling signal time, produce high-strength ultrasonic, and, receive image processing apparatus 2 send the first stop signal time, stop produce high-strength ultrasonic.
Preferably, the first timing duration can be set to 2-5s.
If do not need to know oxygen content accurately, then can after the air bubble content calculating unit area, directly according to the air bubble content of unit area as the whether satisfactory basis for estimation of WATER AS FLOW MEDIUM, thus determine whether to need to change WATER AS FLOW MEDIUM.
Therefore, can also be preset with first threshold in image processing apparatus 2, first threshold may be used for the basis for estimation of the air bubble content as unit area, to judge the height of WATER AS FLOW MEDIUM oxygen level, for the difference of application scenarios, first threshold can be chosen in the scope of 3%-20%.
Image processing apparatus 2 also for, by the air bubble content of unit area that calculates compared with first threshold, when the air bubble content of described unit area is greater than first threshold, illustrate that the oxygen level of now WATER AS FLOW MEDIUM is too high, do not meet the requirement of high-strength focusing ultrasonic therapy, can report to the police, to inform that user changes WATER AS FLOW MEDIUM.
Under the application scenarios of high-strength focused treatment, if higher to the accuracy requirement of WATER AS FLOW MEDIUM measurement of oxygen content, then need after the air bubble content of the unit area calculated, determine the molten amount of the oxygen of WATER AS FLOW MEDIUM further, this just needs to demarcate the air bubble content of unit area and the corresponding relation of the molten amount of oxygen.
The corresponding relation of the air bubble content of unit area and the molten amount of oxygen can obtain by experiment, the molten amount of oxygen under namely utilizing main precision dissolved oxygen detector to detect the air bubble content of different unit area respectively, sets up the air bubble content of unit area and the curve map of the molten amount of oxygen.
The corresponding relation of the air bubble content of unit area and the molten amount of oxygen can be as shown in table 1:
Table 1
| Numbering | Air bubble content (%) | The molten amount ppm of oxygen |
| P1 | 0 | 0 |
| P2 | 1 | 1 |
| P3 | 2 | 2.5 |
| P4 | 3 | 4 |
| P5 | 5 | 10 |
In Table 1, have detected 5 groups of data, the air bubble content of unit area is respectively: 0%, 1%, 2%, 3%, 5% time the molten amount of oxygen be respectively 0,1,2.5,4,10.Those skilled in the art are known, and can get group arbitrarily and detect data, the air bubble content of the unit area often organized also can be chosen according to actual needs voluntarily.
The air bubble content of unit area in table 1 can be divided into multiple segment (being such as divided into 4 segments), in each segment, the air bubble content of the molten amount of oxygen and unit area is linear relationship.
The air bubble content of unit area and the corresponding relation of the molten amount of oxygen is preset with in image processing apparatus 2.
Image processing apparatus 2 also for, the air bubble content of described unit area and the corresponding relation of the molten amount of oxygen is inquired about according to the air bubble content of the unit area calculated, obtain the molten amount of oxygen that the air bubble content of described unit area is corresponding, namely according to the air bubble content question blank 1 of the unit area calculated, obtain the corresponding molten amount of oxygen, thus determine the oxygen level of testing liquid.
If the air bubble content of the unit area calculated inquire about in Table 1 less than, then first determine that the air bubble content of the unit area calculated falls into the air bubble content interval of which unit area of table 1, then according to the air bubble content of the unit area in this interval and the linear relationship of the molten amount of oxygen, by linear interpolation algorithm, the molten amount of oxygen that the air bubble content of this unit area is corresponding can be obtained.
Such as, if the air bubble content of unit area is x=1.5%, if adopt linear interpolation, i.e. the air bubble content of the unit area in the air bubble content interval of same unit area is identical with the slope of a curve of the molten amount of oxygen.The air bubble content 1.5% of unit area falls into the segment of P2-P3, therefore, slope k=(y-p2.y)/(x-p2.x)=(p3.y-p2.y)/(p3.x-p2.x)=(2.5-1)/(2-1)=1.5, then the molten amount of the oxygen of air bubble content corresponding to 1.5% obtaining unit area is:
y＝k*(x-p2.x)+p2.y＝1.5*(1.5-1)+1＝1.75ppm
It should be noted that; the embodiment of the present invention is only described for linear interpolation algorithm; but; those skilled in the art are known; any can realization calculates the algorithm of the molten amount of corresponding oxygen all within protection scope of the present invention according to the air bubble content of unit area; such as; curve interpolation algorithm can also be adopted to calculate the molten amount of oxygen; or; the interpolation algorithm of more than 2 times can also be adopted; as B-spline interpolation algorithm calculates, curve interpolation algorithm and B-spline interpolation algorithm belong to prior art, do not repeat them here.
Further, can also be preset with Second Threshold in image processing apparatus 2, Second Threshold may be used for the basis for estimation of the molten amount of oxygen as the bubble of unit area, to judge the height of WATER AS FLOW MEDIUM oxygen level, for the difference of application scenarios, Second Threshold can be chosen in the scope of 3-6ppm.
Image processing apparatus 2 also for, by molten for oxygen corresponding for the air bubble content of the unit area obtained amount compared with Second Threshold, when the molten amount of the oxygen that the air bubble content of unit area is corresponding is greater than Second Threshold, illustrate that the oxygen level of now WATER AS FLOW MEDIUM is too high, do not meet the requirement of high-strength focusing ultrasonic therapy, can report to the police, to inform that user changes WATER AS FLOW MEDIUM.
In order to clearly demonstrate technical scheme of the present invention, respectively the structure of liquid containing oxygen amount detection systems and detection method are described in detail below by way of 3 embodiments.
Embodiment 1
See Fig. 2, for the structural representation of the liquid containing oxygen amount detection systems that the embodiment of the present invention 1 provides, as shown in the figure, WATER AS FLOW MEDIUM for ultrasound thermal therapy is stored in container 4, this detection system can comprise: image detection device 1, image processing apparatus 2 and high strength supersonic wave generating device 3, and high strength supersonic wave generating device 3 comprises: ultrasound intensity amount controller 31 and transducer 32.
Image processing apparatus 2 is connected with ultrasonic energy controller 31 with image detection device 1 respectively, and ultrasonic energy controller 31 is also connected with transducer 32, and transducer 32 is arranged at the bottom of the container 4 storing WATER AS FLOW MEDIUM, and below the water surface being positioned at WATER AS FLOW MEDIUM.
In embodiment 1, image detection device 1 is optical image acquisition device, specifically can adopt camera, as CCD (Charge-coupledDevice, charge coupled cell) camera.CCD camera is positioned at below the surface level of WATER AS FLOW MEDIUM, can be arranged on the sidewall of container 4, can gather optical image signal in the direction of the plane-parallel with WATER AS FLOW MEDIUM.The sidewall of container 4 is if transparent, CCD camera can be contained on outer wall, if the sidewall of container 4 is opaque, then needs the inner side of sidewall CCD camera being arranged on container 4, such CCD camera can directly contact with WATER AS FLOW MEDIUM, and therefore CCD camera needs to possess water-proof function.When high strength supersonic wave generating device 3 utilizes the high-strength ultrasonic produced to irradiate WATER AS FLOW MEDIUM, the optical image signal of the bubble that described CCD camera synchronous acquisition WATER AS FLOW MEDIUM is formed.
Be preset with in image processing apparatus 2: the first timer and the first timing duration.
Image processing apparatus 2 for, when the instruction of open system receiving user, the first enabling signal is sent to ultrasonic energy controller 31, high-frequency current is produced to control ultrasonic energy controller 31, and send the 3rd enabling signal to camera (image detection device), start to gather optical image signal to control camera, now, the first timer starts timing.When the first timing duration arrives, send the first stop signal to ultrasonic energy controller 31, stop producing high-frequency current to control ultrasonic energy controller 31, and send the 3rd stop signal to camera, stop gathering optical image signal to control camera; And, according to the optical image signal of camera collection, the air bubble content of unit of account area.
Ultrasonic energy controller 31 for, when receiving the first enabling signal that image processing apparatus 2 sends, producing high-frequency current, and the high-frequency current of generation being sent to transducer 32, producing high-frequency ultrasonic to make transducer 32.And, when receiving the first stop signal that image processing apparatus 2 sends, stop producing high-frequency current.
Transducer 32 for, the high frequency current transitions sent by ultrasonic energy controller 31 is high-strength ultrasonic, and utilizes described high-strength ultrasonic to irradiate described WATER AS FLOW MEDIUM, allows the gas absorption energy in WATER AS FLOW MEDIUM expand.
Image detection device 1 for, when receiving the 3rd enabling signal that image processing apparatus 2 sends, in the direction of the plane-parallel with WATER AS FLOW MEDIUM, the optical image signal of the bubble that gas in collection medium water is formed; When receiving the 3rd stop signal that image processing apparatus 2 sends, stop the optical image signal gathering the bubble that the gas in described WATER AS FLOW MEDIUM is formed.
Further, image processing apparatus 2 can also demarcate the air bubble content of unit area and the corresponding relation of the molten amount of oxygen in advance, and determine the corresponding molten amount of oxygen according to the air bubble content of the unit area calculated, and, judge whether further to need to change WATER AS FLOW MEDIUM according to the molten amount of oxygen.Determine the molten amount of oxygen that the air bubble content of the unit area calculated is corresponding, and the process judging whether to need to change WATER AS FLOW MEDIUM as previously mentioned, do not repeat them here.
Image detection device 1 adopts the technical scheme of optical image acquisition device to be applicable to the less demanding scene of liquid containing oxygen amount accuracy of detection, as the bubble in woven hose detects and the detection of WATER AS FLOW MEDIUM air content of ultrasound thermal therapy.
Embodiment 2
See Fig. 3, for the structural representation of the liquid containing oxygen amount detection systems that the embodiment of the present invention 2 provides, as shown in the figure, WATER AS FLOW MEDIUM for high-strength focusing ultrasonic therapy is stored in container 4, this detection system can comprise: image detection device 1, image processing apparatus 2 and high strength supersonic wave generating device 3, and high strength supersonic wave generating device 3 comprises: ultrasonic energy controller 31 and transducer 32.
Embodiment 2 is with the difference of embodiment 1, and image detection device 1 adopts different equipment, and the control procedure of image detection device 1 in image processing apparatus 2 pairs of embodiments 2, different to the control procedure of the image processing apparatus 1 in embodiment 1.
In example 2, image detection device 1 can comprise: ultrasonic probe 11 and supersonic imaging apparatus 12, and supersonic imaging apparatus 12 can select B ultrasonic machine, and ultrasonic probe 11 is arranged at below the water surface of the WATER AS FLOW MEDIUM in container.
Ultrasonic probe 11 is connected with image processing apparatus 2 with supersonic imaging apparatus 12 respectively, for the control according to image processing apparatus 2, produces detecting ultrasonic ripple, in order to utilize the WATER AS FLOW MEDIUM in detecting ultrasonic ripple exposure cage 4; And receive echoed signal, and echoed signal is sent to supersonic imaging apparatus 12, wherein, described echoed signal produces after described detecting ultrasonic ripple that ultrasonic probe 11 is launched runs in WATER AS FLOW MEDIUM bubble; And, according to the control of image processing apparatus 1, stop producing detecting ultrasonic ripple.
Detecting ultrasonic ripple is the ultrasound wave that a kind of energy is lower, preferably, and the sound intensity <1W/cm of detecting ultrasonic ripple
2.
Ultrasonic probe 11 can be arranged at the middle part of transducer 32, better to focus on.
Supersonic imaging apparatus 12 is connected with image processing apparatus 1, for the echoed signal received is converted to ultrasound image signal, and described ultrasound image signal is sent to image processing apparatus 1.
In example 2, the second timer, the 3rd timer, the second timing duration and the 3rd timing duration is also preset with in image processing apparatus 2.Preferably, the first timing duration can be set to 2-5s, and the 3rd timing duration can be set to 1s.
Image processing apparatus 2 for, when first timing duration arrive time, the second timer starts timing; When the second timing duration arrives, the 3rd timer starts timing, and sends the second enabling signal to ultrasonic probe 11, produces detecting ultrasonic ripple to control ultrasonic probe 11; When the 3rd timing duration arrives, send the second stop signal to ultrasonic probe 11, stop producing detecting ultrasonic ripple to control ultrasonic probe 11; And, according to the ultrasonic imaging signal that supersonic imaging apparatus 12 sends, the air bubble content of unit of account area.
Because supersonic imaging apparatus 12 (B ultrasonic machine) is also utilize ultrasound works, and ultrasonic probe 11 also can send the detecting ultrasonic ripple of certain frequency, in order to not produce interference to the high-strength ultrasonic that transducer 32 sends, after high strength supersonic wave generating device 3 stops after certain interval of time, just control image detection device 1 (i.e. ultrasonic probe 11) and start.Image detection device 1 starts and high strength supersonic wave generating device 3 stop between time period (i.e. the second timing duration) can not arrange long, can not be too short, if the second timing duration is long, the bubble then formed can reduce, if the second timing duration is too short, then can produce interference to high-strength ultrasonic, affect the accuracy of testing result, therefore, preferably, the second timing duration can be set to 0.1-0.5s.
Further, image processing apparatus 2 can also demarcate the air bubble content of unit area and the corresponding relation of the molten amount of oxygen in advance, and determine the corresponding molten amount of oxygen according to the air bubble content of the unit area calculated, and, judge further to need to change WATER AS FLOW MEDIUM according to the molten amount of oxygen.Determine the molten amount of oxygen that the air bubble content of the unit area calculated is corresponding, and the process judging whether to need to change WATER AS FLOW MEDIUM as previously mentioned, do not repeat them here.
In example 2, image detection device 1 adopts ultrasonic probe and B ultrasonic machine, because B ultrasonic machine is used for ultrasonic imaging, imaging effect is relative to the better effects if of optical imagery, and therefore, accuracy of detection is higher, go for the application scenarios that air content in liquid is strictly controlled, as high-strength focused treatment.
Embodiment 3
The embodiment of the present invention 3 provides a kind of liquid containing oxygen quantity measuring method, and the method comprises the following steps:
Step a, to liquid propellant high-strength ultrasonic to be measured, namely utilize high-strength ultrasonic to irradiate testing liquid, form bubble to make gas in described testing liquid.
Concrete, the transducer in high strength supersonic wave generating device can be adopted liquid propellant high-strength ultrasonic to be measured.
Gas in step b, selection testing liquid forms certain region alveolate as region to be measured, and calculates the air bubble content of unit area in region to be measured.
The region that bubble is comparatively concentrated to be commonly referred to as on the axis being in transducer of testing liquid and the regional extent of 2 ~ 5cm below focus.Because the bubble observed in this regional extent is maximum, and this region can not be subject to the impact of cavitation effect.Thus region to be measured can be chosen within the scope of above-mentioned zone.
Preferably, step b specifically can comprise the following steps:
The image of the bubble that step b1, the gas gathered in described testing liquid are formed, on the image gathered, a selected region that bubble is the most concentrated is as region to be measured, and calculates the total number of pixels in described region to be measured;
Step b2, the bubble identified in described region to be measured, and the summation calculating the number of bubble this image pixel shared in described region to be measured;
Preferably, the image of the regional extent that the described bubble that the gas that can be gathered in testing liquid by image detection device is formed comparatively is concentrated, and from this image, select the most concentrated region of certain bubble as region to be measured.Specifically, image detection device can be arranged on the position corresponding to the regional extent that above-mentioned bubble is comparatively concentrated, with the image making image detection device can collect the bubble in this regional extent, user can select a region that bubble is the most concentrated as region to be measured from the image that this collects;
Step b3, by calculating total number of pixels in described region to be measured and the ratio of the summation of the number of pixel shared by the bubble in described region to be measured, obtain the air bubble content of unit area.
Concrete, can be calculated by image processing apparatus also can by manually calculating the air bubble content of the unit area in region to be measured.
Because the air bubble content of unit area and the molten measurer of oxygen have corresponding relation, specifically as shown in table 1.Therefore, preferably, the method is further comprising the steps of:
The air bubble content of the unit area that step c, basis calculate, determines the molten amount of oxygen that the air bubble content of described unit area is corresponding.
Specifically, the air bubble content of described unit area and the corresponding relation of the molten amount of oxygen can be inquired about according to the air bubble content of the unit area calculated, thus the molten amount of oxygen that the air bubble content obtaining described unit area is corresponding, thus determine the oxygen level of testing liquid.
In high-strength focusing ultrasonic therapy process, the oxygen level of WATER AS FLOW MEDIUM can constantly change, therefore, WATER AS FLOW MEDIUM needs timing to change water, namely at set intervals, the WATER AS FLOW MEDIUM being used for high-strength focusing ultrasonic therapy conduction is bled off, then again the WATER AS FLOW MEDIUM after degassed is introduced, as high intensity focused ultrasound conductive medium water.But at different ambient temperatures, the speed that oxygen dissolves in water is also different, therefore, changing the water time interval is difficult to control, and changes the water time interval and shortly can cause waste, change the water time interval and grown that then the molten amount of oxygen is too high, the requirement of high-strength focusing ultrasonic therapy cannot be reached.Existing scheme normally human at periodic intervals detects the oxygen level of WATER AS FLOW MEDIUM, can bring thus detection not in time, time-consuming, effort problem.
By utilizing liquid containing oxygen amount detection systems of the present invention and method, can realize changing water management to WATER AS FLOW MEDIUM.Concrete, can arrange sense cycle in image processing apparatus 2, image processing apparatus 2 according to this sense cycle, can control high strength supersonic wave generating device 3 and produces high-strength ultrasonic.
Arranging of this sense cycle can be different and different according to the model of degassing equipment, environment, and preferably, sense cycle can be set to 20-30min.
When sense cycle arrives, liquid containing oxygen amount detection systems detects the oxygen level of WATER AS FLOW MEDIUM, and when the air bubble content of unit area is greater than 20%, or when the molten amount of oxygen is greater than 5ppm, think and need to change WATER AS FLOW MEDIUM, liquid containing oxygen amount detection systems can be reported to the police.
Utilize the oxygen level of liquid containing oxygen amount detection systems cycle detection WATER AS FLOW MEDIUM, can labor cost be reduced, avoid undetected generation, guarantee to change water in time in high-strength focusing ultrasonic therapy process.
Liquid containing oxygen amount detection systems of the present invention and method can also be used to the deaeration capacity detecting water disposal facility, if the WATER AS FLOW MEDIUM after water disposal facility is degassed still has more bubble, then show that water disposal facility has fault, this WATER AS FLOW MEDIUM is discontented with the requirement of foot therapy water.
After having changed WATER AS FLOW MEDIUM, liquid containing oxygen amount detection systems is utilized to detect WATER AS FLOW MEDIUM oxygen level immediately, if oxygen level exceeds standard, then water disposal facility fault (degassed not up to standard) is described, such as, when the air bubble content of unit area is greater than 3%, or, when the molten amount of oxygen is greater than 3ppm, think that oxygen level exceeds standard, liquid containing oxygen amount detection systems of the present invention sends warning, to notify that maintenance personal processes in time.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (12)
1. a liquid containing oxygen amount detection systems, is characterized in that, comprising: image detection device, image processing apparatus and high strength supersonic wave generating device;
High strength supersonic wave generating device is used for, and produces high-strength ultrasonic, and the high-strength ultrasonic utilizing high strength supersonic wave generating device to produce irradiates testing liquid, forms bubble to make the gas in described testing liquid;
Image detection device is used for, and gathers the picture signal of the bubble that the gas in described testing liquid is formed;
Image processing apparatus is connected with image detection device, for the picture signal gathered according to image detection device, and the air bubble content of unit of account area.
2. the system as claimed in claim 1, is characterized in that, described high strength supersonic wave generating device comprises: ultrasonic energy controller and transducer;
Super-strength energy controller is connected with described image processing apparatus with transducer respectively, for generation of high-frequency current, and described high-frequency current is sent to transducer;
Transducer is arranged in the container for storing described testing liquid, and below the liquid level being arranged at described testing liquid, high frequency current transitions for being sent by ultrasonic energy controller is high-strength ultrasonic, and utilizes described high-strength ultrasonic to irradiate described testing liquid.
3. the system as claimed in claim 1, is characterized in that, described image processing apparatus is also connected with described high strength supersonic wave generating device, is preset with the first timer and the first timing duration in described image processing apparatus;
Described image processing apparatus is used for, and sends the first enabling signal to described high strength supersonic wave generating device, and when sending the first enabling signal to described high strength supersonic wave generating device, the first timer starts timing; And, when the first timing duration arrives, send the first stop signal to described high strength supersonic wave generating device;
Described high strength supersonic wave generating device specifically for, receive described image processing apparatus send the first enabling signal time, produce high-strength ultrasonic; And, when receiving the first stop signal that described image processing apparatus sends, stop producing high-strength ultrasonic.
4. system as claimed in claim 3, it is characterized in that, described image detection device comprises: ultrasonic probe and supersonic imaging apparatus, and ultrasonic probe is arranged at below the liquid level of described testing liquid;
Ultrasonic probe is connected with described image processing apparatus with supersonic imaging apparatus respectively, for, according to the control of described image processing apparatus, produce detecting ultrasonic ripple, utilize detecting ultrasonic ripple to irradiate described testing liquid; And receive echoed signal, and described echoed signal is sent to supersonic imaging apparatus, wherein, described echoed signal is that the bubble that described low-intensity ultrasonic runs in testing liquid produces; And, according to the control of described image processing apparatus, stop producing detecting ultrasonic ripple;
Supersonic imaging apparatus is connected with described image processing apparatus, for the echoed signal received is converted to ultrasound image signal, and described ultrasound image signal is sent to described image processing apparatus;
Described image processing apparatus specifically for, according to supersonic imaging apparatus send ultrasonic imaging signal, the air bubble content of unit of account area.
5. system as claimed in claim 4, it is characterized in that, also be preset with the second timer, the 3rd timer, the second timing duration and the 3rd timing duration in described image processing apparatus, wherein, the first timing duration is greater than the 3rd timing duration and is greater than the second timing duration;
Described image processing apparatus also for, when first timing duration arrive time, the second timer starts timing; When the second timing duration arrives, the 3rd timer starts timing, and sends the second enabling signal to ultrasonic probe, produces detecting ultrasonic ripple to control ultrasonic probe; When the 3rd timing duration arrives, send the second stop signal to ultrasonic probe, stop producing detecting ultrasonic ripple to control ultrasonic probe.
6. system as claimed in claim 5, it is characterized in that, described first timing duration is 2-5S, and described second timing duration is 0.1-0.5S.
7. system as claimed in claim 3, it is characterized in that, described image detection device is optical image acquisition device;
Described optical image acquisition device is arranged at below the liquid level of described testing liquid, specifically for, when described high strength supersonic wave generating device utilizes the high-strength ultrasonic produced to irradiate described testing liquid, in the direction of the plane-parallel with described testing liquid, gather the optical image signal of the bubble that the gas in described testing liquid is formed;
Described image processing apparatus specifically for, according to optical image acquisition device gather optical image signal, the air bubble content of unit of account area.
8. system as claimed in claim 7, is characterized in that, described image processing apparatus also for, when sending the first enabling signal to described high strength supersonic wave generating device, send the 3rd enabling signal to described optical image acquisition device; And, when the first timing duration arrives, send the 3rd stop signal to described optical image acquisition device;
Described optical image acquisition device specifically for, when receiving the 3rd enabling signal that described image processing apparatus sends, in the direction of the plane-parallel with described testing liquid, gather the optical image signal of the bubble that gas in described testing liquid is formed; When receiving the 3rd stop signal that described image processing apparatus sends, stop the optical image signal gathering the bubble that the gas in described testing liquid is formed.
9. the system as described in any one of claim 1-8, is characterized in that, is also preset with the air bubble content of unit area and the corresponding relation of the molten amount of oxygen in described image processing apparatus;
Described image processing apparatus also for, inquire about the air bubble content of described unit area and the corresponding relation of the molten amount of oxygen according to the air bubble content of the unit area calculated, obtain the molten amount of oxygen that the air bubble content of described unit area is corresponding.
10. as right wants the system as described in 9, it is characterized in that, in described image processing apparatus, be also preset with first threshold; Described image processing apparatus also for, by the air bubble content of unit area that calculates compared with described first threshold, when the air bubble content of described unit area is greater than described first threshold, report to the police; Or,
Also Second Threshold is preset with in described image processing apparatus; Described image processing apparatus also for, by the molten amount of oxygen corresponding for the air bubble content of the described unit area obtained compared with described Second Threshold, when the molten amount of the oxygen that the air bubble content of described unit area is corresponding is greater than described Second Threshold, report to the police.
11. 1 kinds of liquid containing oxygen quantity measuring methods, is characterized in that, comprise the following steps:
To liquid propellant high-strength ultrasonic to be measured, form bubble to make the gas in described testing liquid;
In selection testing liquid, an alveolate region is as region to be measured, and calculates the air bubble content of the unit area in region to be measured.
12. methods as claimed in claim 11, is characterized in that, form an alveolate region as region to be measured, and calculate the air bubble content of unit area in region to be measured, specifically comprise in described selection testing liquid:
Gather the image of the bubble that the gas in described testing liquid is formed, on the image gathered, a selected region that bubble is the most concentrated is as region to be measured, and calculates the total number of pixels in described region to be measured;
Identify the bubble in described region to be measured, and calculate the summation of the number of pixel shared by the bubble in described region to be measured;
By calculating total number of pixels in described region to be measured and the ratio of the summation of the number of pixel shared by the bubble in described region to be measured, obtain the air bubble content of unit area.
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| CN102526895A (en) * | 2010-12-29 | 2012-07-04 | 重庆微海软件开发有限公司 | Ultrasonic therapy equipment and medium water control method thereof |
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