CN202182873U - Emulsion concentration online detector - Google Patents
Emulsion concentration online detector Download PDFInfo
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- CN202182873U CN202182873U CN 201120254614 CN201120254614U CN202182873U CN 202182873 U CN202182873 U CN 202182873U CN 201120254614 CN201120254614 CN 201120254614 CN 201120254614 U CN201120254614 U CN 201120254614U CN 202182873 U CN202182873 U CN 202182873U
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Abstract
The utility model discloses an emulsion concentration online detector, which comprises a microprocessor, a temperature sensor, a temperature detection circuit, an ultrasonic emission circuit, an ultrasonic receiving circuit, an ultrasonic emission probe and an ultrasonic receiving probe. The emulsion concentration online detector is characterized in that the ultrasonic receiving circuit comprises an amplitude limiting and preamplification circuit, a deformation double integrating circuit, a comparing circuit and an opposition and amplitude limiting circuit, wherein the amplitude limiting and preamplification circuit receives signals emitted by the ultrasonic receiving probe, the signals are performed by double limiting and preamplification to be output to the deformation double integrating circuit, the deformation double integrating circuit receives signals output by the amplitude limiting and preamplification circuit to convert the signals into double integrating ultrasonic signals to emit to the comparing circuit, the comparing circuit compares the received signals with standard signals to send square signals to the opposition and amplitude limiting circuit, and the received square signals is performed opposition and amplitude limiting by the opposition and amplitude limiting circuit to be sent to the microprocessor. The emulsion concentration online detector is suitable for industries of our country such as coal, oil, chemistry, machinery and the like.
Description
Technical field
The utility model relates to concentration of emulsion used and detects, and is specifically related to the concentration of emulsion used on-line detector.
Background technology
At coal mine fully-mechanized mining working, emulsion is the actuating medium that hydraulic support and hydraulic prop adopt, and in hydraulic system, plays a part blood.It not only plays transferring power, lubricated, cooling, but also corrosion and corrosion are played inhibiting effect.Traditional mining concentration of emulsion used detection means is relatively backward, and most of factories and miness all are to use refractometer method and breakdown of emulsion method to detect the concentration of emulsion, and these two kinds of methods all need hand sampling and range estimation reading, and the precision that causes concentration of emulsion used to detect is relatively poor; Because the detection method that is adopted is all carried out under off-line state, detected concentration and actual concentrations exist the mistiming, can not accurately reflect the momentary status value of emulsion, thereby control accuracy are relatively poor, can not satisfy production requirement.
The utility model content
The utility model technical matters to be solved is to provide a kind of concentration of emulsion used on-line detector.
In order to address the above problem; Technical scheme according to the utility model; The concentration of emulsion used on-line detector comprises microprocessor, temperature sensor, temperature sensing circuit, ultrasonic transmit circuit, ultrasound wave receiving circuit, ultrasonic emitting probe and ultrasound wave receiving transducer, wherein:
Temperature sensing circuit receives the emulsion temperature signal of temperature sensor output, outputs to microprocessor after the processing;
Microprocessor sends start pulse signal to ultrasonic transmit circuit;
Ultrasonic transmit circuit receives the start pulse signal that microprocessor sends, and exports high-voltage pulse signal after treatment to the ultrasonic emitting probe;
Launch ultrasound wave behind the high-voltage pulse signal that ultrasonic emitting probe reception ultrasonic transmit circuit sends;
The ultrasound wave receiving transducer receives ultrasonic emitting probe ultrasonic waves transmitted, outputs to the ultrasound wave receiving circuit;
The ultrasound wave receiving circuit outputs to microprocessor after with the signal Processing of receiving;
Microprocessor receives the signal of ultrasound wave receiving circuit and temperature sensing circuit output, outputs to display circuit or host computer after the processing;
Be characterized in:
The ultrasound wave receiving circuit comprises amplitude limit and pre-amplification circuit, distortion double integration circuit, comparator circuit and anti-phase and amplitude limiter circuit;
Wherein: amplitude limit and pre-amplification circuit receive the signal of ultrasound wave receiving transducer emission, after double limiting and preposition amplification, output to the distortion double integration circuit;
The distortion double integration circuit receives the signal of amplitude limit and pre-amplification circuit output, converts the double integrator ultrasonic signal to, outputs to comparator circuit;
Comparator circuit is relatively exported square-wave signal to anti-phase and amplitude limiter circuit in the back with signal of receiving and standard signal;
Anti-phase and amplitude limiter circuit carry out the square-wave signal of receiving to output to microprocessor behind anti-phase and the amplitude limit.
According to the preferred version of the described concentration of emulsion used on-line detector of said the utility model, the signal after said microprocessor also will be handled sends to host computer through communicating circuit; Simultaneously, microprocessor also receives the control signal that host computer sends through communicating circuit.
According to the preferred version of the described concentration of emulsion used on-line detector of said the utility model, this concentration of emulsion used on-line detector also comprises telepilot and infrared remote control receiving circuit;
Said infrared remote control receiving circuit receives the infrared remote-controlled signal that telepilot sends, and outputs to microprocessor after handling.
According to the preferred version of the described concentration of emulsion used on-line detector of said the utility model, ultrasonic transmit circuit comprises that photoelectric isolating circuit, Drive and Control Circuit and high-voltage pulse produce circuit; Wherein:
Photoelectric isolating circuit receives the start pulse signal that microprocessor sends, and carries out Signal Spacing and handles, and the signal after handling is outputed to Drive and Control Circuit;
Drive and Control Circuit receives the signal of photoelectric isolating circuit output, produces drive control signal and outputs to high-voltage pulse generation circuit;
High-voltage pulse produces the drive control signal that circuit receives Drive and Control Circuit output, produces high-voltage pulse signal and outputs to the ultrasonic emitting probe.
Preferred version according to the described concentration of emulsion used on-line detector of said the utility model; The distortion double integration circuit comprises fast recovery diode, integrating capacitor and discharge resistance; Wherein, the positive pole of fast recovery diode connects the output terminal of amplitude limit and pre-amplification circuit, and integrating capacitor and discharge resistance are connected in parallel; End after being connected in parallel connects the negative pole of fast recovery diode and one of them input end of comparator circuit, the other end ground connection after being connected in parallel.
Preferred version according to the described concentration of emulsion used on-line detector of said the utility model; Comparator circuit comprises high-speed comparator; Wherein, The positive input of high-speed comparator connects the output terminal of distortion double integration circuit, and the negative input of high-speed comparator connects direct supply through adjustable resistance.
The beneficial effect of the described concentration of emulsion used on-line detector of the utility model is: the utility model is through the test travel-time of ultrasound wave in emulsion; Utilize microprocessor to carry out data processing and calculating, and temperature variation is compensated, concentration data is shown through display circuit; Utilize communicating circuit that concentration data is transferred to host computer; Simultaneously, can also control, realize continuous automatic telemetering through telepilot; The utility model has realized that the concentration of emulsion used automatic on-line detects, intuitive display, and system architecture is simple, and measurement is rapid, and test accuracy is high, and is easy to use, and the ultrasound wave receiving circuit is simple, reliable, accurate; The utility model is fit to industries such as China's coal-mine, oil, chemical industry, machinery very much to be used, and has great economic benefit and social benefit.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the described concentration of emulsion used on-line detector of the utility model.
Fig. 2 is the schematic block circuit diagram of the described ultrasound wave receiving circuit 5 of the utility model.
Fig. 3 is the schematic block circuit diagram of the described ultrasonic transmit circuit 4 of the utility model.
Fig. 4 is the circuit theory diagrams of the described ultrasound wave receiving circuit 5 of the utility model.
Fig. 5 is the described concentration of emulsion used on-line detector of a utility model principle of work synoptic diagram.
Fig. 6 is the program flow chart of the described microprocessor 1 of the utility model.
Embodiment
Referring to Fig. 1 to Fig. 3; The described concentration of emulsion used on-line detector of the utility model; Constitute by microprocessor 1, temperature sensor 2, temperature sensing circuit 3, ultrasonic transmit circuit 4, ultrasound wave receiving circuit 5, ultrasonic emitting probe 6, ultrasound wave receiving transducer 7, telepilot 8, infrared remote control receiving circuit 9, communicating circuit 10, display 15 and host computer 16; Wherein: temperature sensor 2, ultrasonic emitting probe 6 and ultrasound wave receiving transducer 7 are placed in the emulsion to be measured; Temperature sensor 2, temperature sensing circuit 3, microprocessor 1, ultrasonic transmit circuit 4, ultrasonic emitting probe 6 are linked in sequence; And with the output terminal of ultrasound wave receiving transducer 7 connect the input end of ultrasound wave receiving circuit 5, the output terminal of ultrasound wave receiving circuit 5 connects one of them input end of microprocessor 1; Simultaneously; Wherein another input end of microprocessor 1 also connects the output terminal of infrared remote control receiving circuit 9, and the input end of infrared remote control receiving circuit 12 connects the output terminal of telepilot 8, and one of them output terminal of microprocessor 1 also connects the input end of display 15; In addition, microprocessor 1 also is connected with communicating circuit 10, and communicating circuit 10 is connected with host computer 16, and signal is transmitted in both directions between microprocessor 1 and the communicating circuit 10 and between communicating circuit 10 and the host computer 16; Wherein:
Microprocessor 1 sends start pulse signal to ultrasonic transmit circuit 4; Simultaneously, microprocessor 1 receives the signal of ultrasound wave receiving circuit 5 and temperature sensing circuit 3 outputs, outputs to display circuit after the processing or sends to host computer through communicating circuit 10; Microprocessor 1 also receives the control signal that host computer sends through communicating circuit 10; And microprocessor 1 receives the infrared remote-controlled signal that said infrared remote control receiving circuit 9 sends;
Launch ultrasound wave behind the high-voltage pulse signal that ultrasonic emitting probe 6 reception ultrasonic transmit circuits 4 send;
Ultrasound wave receiving transducer 7 receives ultrasonic emitting 6 ultrasonic waves transmitted of popping one's head in, and outputs to ultrasound wave receiving circuit 5;
Ultrasound wave receiving circuit 5 outputs to microprocessor 1 after with the signal Processing of receiving;
Ultrasound wave receiving circuit 5 comprises amplitude limit and pre-amplification circuit 11, is out of shape double integration circuit 12, comparator circuit 13 and anti-phase and amplitude limiter circuit 14;
Wherein: amplitude limit and pre-amplification circuit 11 receive the signal of ultrasound wave receiving transducer emission, after double limiting and preposition amplification, output to distortion double integration circuit 12;
Distortion double integration circuit 12 receives the signal of amplitude limit and pre-amplification circuit 11 outputs, converts the double integrator ultrasonic signal to, outputs to comparator circuit 13;
Anti-phase and amplitude limiter circuit 14 carry out the square-wave signal of receiving to output to microprocessor 1 behind anti-phase and the amplitude limit;
Said infrared remote control receiving circuit 9 receives the infrared remote-controlled signal that telepilot 8 sends, and outputs to microprocessor 1 after handling.
In the specific embodiments of the described concentration of emulsion used on-line detector of the utility model, ultrasonic transmit circuit 4 comprises that photoelectric isolating circuit 21, Drive and Control Circuit 22 and high-voltage pulse produce circuit 23; Wherein:
Drive and Control Circuit 22 receives the signal of photoelectric isolating circuit 21 outputs, produces drive control signal and outputs to high-voltage pulse generation circuit 23;
High-voltage pulse produces the drive control signal that circuit 23 receives Drive and Control Circuit 22 outputs, produces high-voltage pulse signal and outputs to ultrasonic emitting probe 6.
Referring to Fig. 4; In the specific embodiments of the described concentration of emulsion used on-line detector of the utility model; Distortion double integration circuit 12 comprises fast recovery diode D4, integrating capacitor C13 and discharge resistance R19; Wherein, the positive pole of fast recovery diode D4 connects the output terminal of amplitude limit and pre-amplification circuit 11, and integrating capacitor C13 and discharge resistance R19 are connected in parallel; End after being connected in parallel connects the negative pole of fast recovery diode D4 and one of them input end of comparator circuit 13, the other end ground connection after being connected in parallel.
And, in microprocessor 1, being provided with program shown in Figure 6, the SCM program workflow is following:
When system brings into operation, at first read working method, demarcate temperature, systematic parameter such as during sound, judged whether communication disruption, if having, then carry out interrupt service routine and host computer to communicate; If there is not a communication disruption, detected temperatures and send start pulse signal then, simultaneously according to the parameter that reads, and the concentration of utilizing the Pressure, Concentration, Temperature that stores and time relation formula to calculate emulsion.If appearance temperature detects unusual or ultrasonic emitting receives situation such as unusual in the concentration testing process, system produces warning automatically; If check is normal, then display density.Whether in procedure for displaying, detecting has remote signal to receive, if having, then produces and interrupts, and carries out corresponding distant control function, returns temperature, sound speed detection after executing.
In concrete scheme, temperature sensor can be selected DS18B20 for use; Ultrasonic probe adopts the resonant vibration type supersonic wave sensor, and adopts the sending and receiving independent mode, reaches to get rid of the purpose that emission is disturbed.Simultaneously, adopting centre frequency is the ultrasonic probe of 2.5MHz, improves hyperacoustic Propagation of Energy; Adopt the high single-chip microcomputer of processing speed, make toggle rate can reach 32MHz, the resolution during raising sound; And in the ultrasound wave receiving circuit, adopt the distortion integral way that ultrasonic signal is handled, improved the noise margin ability of circuit, reduced requirement, make that the ultrasonic velocity of measuring is more accurate circuit component.
The principle of work of ultrasound wave receiving circuit 5 is: after the reception ultrasonic probe received and transmits, through diode D9, after the D11 double limiting, the broad band amplifier of forming through amplifier U19, resistance R 16, R17, R31 carried out preposition amplification; Preposition amplifying signal is sent into the distortion double integration circuit 12 that the input impedance by fast recovery diode D4, discharge resistance R19, integrating capacitor C13 and high-speed comparator U17 constitutes; Here replace the resistance in the integrating circuit with fast recovery diode D4, and, constitute double integration circuit integrating capacitor C13 parallel discharge resistance R 19; Because the forward resistance of fast recovery diode D4 is little; So forward integration slope is big, it is fast to rise, and discharge time is because the existence of discharge resistance R19 becomes slower; Thereby it is steep to obtain rising edge, the integrated waveform that amplitude is big; This waveform comprises ultrasonic pulse beam characteristics value, and has removed undesired signal, so relative fixed; And it is different with the pulse extraction circuit of routine through detecting ultrasound wave master ripple; Need not zero cross detection circuit, do as a whole the processing to ultrasound beamformer, make circuit succinct, reliable, accurate; The double integrator ultrasonic signal becomes square wave behind the high speed comparator circuit, behind anti-phase and amplitude limit, send into microprocessor 1 counting mouth.
Referring to Fig. 5; The principle of work of concentration of emulsion used on-line detector is: the concentration of emulsion used on-line detector adopts the ultrasonic velocity method to realize the on-line real time monitoring of mining concentration of emulsion used; For the emulsion of variable concentrations, ultrasound wave is inequality in the speed of its propagation.But in practical application, because the variation of other state of emulsion such as temperature, pressure also can make the velocity of sound change, the influence of therefore necessary account temperature and pressure compensates them.The pressure of considering emulsion changes little, and pressure is very little to the influence of the velocity of sound, can ignore, thus only account temperature to the influence of the velocity of sound.Because the velocity of sound is to calculate promptly the time through measuring the travel-time of ultrasound wave on fixing sound path; Therefore; The measurement of ultrasound wave velocity of propagation in emulsion finally is summed up as the measurement to the travel-time; Promptly measure ultrasonic pulse from being transmitted into the used time
that receives; Distance between transmitting probe and the receiving transducer is that the sound path of ultrasonic propagation is for
for
; Because the sound path
of ultrasonic propagation is certain; As long as therefore measure the time
of ultrasonic propagation, just can obtain the velocity of propagation of ultrasound wave in emulsion.As long as therefore measure from launching ultrasonic signal, go out the speed that ultrasound wave is propagated in emulsion through distance and Time Calculation to receiving the needed time of ultrasonic signal.Simultaneously, during owing to the emulsion temperature variation, ultrasonic propagation velocity also can change; Therefore when the concentration of test emulsion; Also need detect the temperature of emulsion with temperature sensor, so that the influence that compensates causes sonic velocity change guarantees test accuracy.Pressure, Concentration, Temperature and time relation formula are following:
N=f（T，t）
Wherein: N representes the concentration of emulsion; T representes the temperature of emulsion; T representes ultrasonic pulse from being transmitted into the used time that receives, and promptly ultrasound wave is propagated the used time of L distance in emulsion; L representes the distance between ultrasonic emitting probe 6 and the ultrasound wave receiving transducer 7;
Before concentration of emulsion used is detected in real time, on the one hand, need be in the laboratory compound concentration value between the emulsion that needs the test concentrations scope; On the other hand, the temperature that also will guarantee emulsion changes to some extent.On this basis, at first, measure the travel-time that the emulsion of variable concentrations changes with temperature variation with microprocessor and ultrasonic transmit circuit, receiving circuit in the laboratory.Then, the data according to experiment obtains draw the function relation curve between concentration of emulsion used, ultrasonic propagation time and the temperature three.At last,, and it is deposited in microprocessor 1 chip, use as the experimental formula that follow-up concentration of emulsion used detects in real time with the program of software programming function expression.
Claims (6)
1. concentration of emulsion used on-line detector; Comprise microprocessor (1), temperature sensor (2), temperature sensing circuit (3), ultrasonic transmit circuit (4), ultrasound wave receiving circuit (5), ultrasonic emitting probe (6) and ultrasound wave receiving transducer (7), wherein:
Temperature sensing circuit (3) receives the emulsion temperature signal of temperature sensor (2) output, outputs to microprocessor (1) after the processing;
Microprocessor (1) sends start pulse signal to ultrasonic transmit circuit (4);
Ultrasonic transmit circuit (4) receives the start pulse signal that microprocessor (1) sends, and exports high-voltage pulse signal after treatment to ultrasonic emitting probe (6);
Launch ultrasound wave behind the high-voltage pulse signal that ultrasonic emitting probe (6) reception ultrasonic transmit circuit (4) sends;
Ultrasound wave receiving transducer (7) receives ultrasonic emitting probe (6) ultrasonic waves transmitted, outputs to ultrasound wave receiving circuit (5);
Ultrasound wave receiving circuit (5) outputs to microprocessor (1) after with the signal Processing of receiving;
Microprocessor (1) receives the signal of ultrasound wave receiving circuit (5) and temperature sensing circuit (3) output, outputs to display circuit or host computer after the processing;
It is characterized in that:
Ultrasound wave receiving circuit (5) comprises amplitude limit and pre-amplification circuit (11), is out of shape double integration circuit (12), comparator circuit (13) and anti-phase and amplitude limiter circuit (14);
Wherein: amplitude limit and pre-amplification circuit (11) receive the signal of ultrasound wave receiving transducer emission, after double limiting and preposition amplification, output to distortion double integration circuit (12);
Distortion double integration circuit (12) receives the signal of amplitude limit and pre-amplification circuit (11) output, converts the double integrator ultrasonic signal to, outputs to comparator circuit (13);
Comparator circuit (13) is relatively exported square-wave signal to anti-phase and amplitude limiter circuit (14) in the back with signal of receiving and standard signal;
Anti-phase and amplitude limiter circuit (14) carry out the square-wave signal of receiving to output to microprocessor (1) behind anti-phase and the amplitude limit.
2. concentration of emulsion used on-line detector according to claim 1 is characterized in that: the signal after said microprocessor (1) also will be handled sends to host computer through communicating circuit (10); Simultaneously, microprocessor (1) also receives the control signal that host computer sends through communicating circuit (10).
3. concentration of emulsion used on-line detector according to claim 1 and 2 is characterized in that: this concentration of emulsion used on-line detector also comprises telepilot (8) and infrared remote control receiving circuit (9);
Said infrared remote control receiving circuit (9) receives the infrared remote-controlled signal that telepilot (8) sends, and outputs to microprocessor (1) after handling.
4. concentration of emulsion used on-line detector according to claim 3 is characterized in that: ultrasonic transmit circuit (4) comprises that photoelectric isolating circuit (21), Drive and Control Circuit (22) and high-voltage pulse produce circuit (23); Wherein:
Photoelectric isolating circuit (21) receives the start pulse signal that microprocessor (1) sends, and carries out Signal Spacing and handles, and the signal after handling is outputed to Drive and Control Circuit (22);
Drive and Control Circuit (22) receives the signal of photoelectric isolating circuit (21) output, produces drive control signal and outputs to high-voltage pulse generation circuit (23);
High-voltage pulse produces the drive control signal that circuit (23) receives Drive and Control Circuit (22) output, produces high-voltage pulse signal and outputs to ultrasonic emitting probe (6).
5. concentration of emulsion used on-line detector according to claim 4; It is characterized in that: distortion double integration circuit (12) comprises fast recovery diode (D4), integrating capacitor (C13) and discharge resistance (R19); Wherein, The positive pole of fast recovery diode (D4) connects the output terminal of amplitude limit and pre-amplification circuit (11); Integrating capacitor (C13) and discharge resistance (R19) are connected in parallel, and the end after being connected in parallel connects the negative pole of fast recovery diode (D4) and one of them input end of comparator circuit (13), the other end ground connection after being connected in parallel.
6. concentration of emulsion used on-line detector according to claim 5; It is characterized in that: comparator circuit (13) comprises high-speed comparator (U17); Wherein, The positive input of high-speed comparator (U17) connects the output terminal of distortion double integration circuit (12), and the negative input of high-speed comparator U17 connects direct supply through adjustable resistance (R33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120254614 CN202182873U (en) | 2011-07-19 | 2011-07-19 | Emulsion concentration online detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120254614 CN202182873U (en) | 2011-07-19 | 2011-07-19 | Emulsion concentration online detector |
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| Publication Number | Publication Date |
|---|---|
| CN202182873U true CN202182873U (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120254614 Expired - Lifetime CN202182873U (en) | 2011-07-19 | 2011-07-19 | Emulsion concentration online detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253119A (en) * | 2011-07-19 | 2011-11-23 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
| CN107462630A (en) * | 2017-08-16 | 2017-12-12 | 中国石油化工股份有限公司 | A kind of polymer concentration detection method and equipment based on sound velocity method |
| CN109115717A (en) * | 2018-07-16 | 2019-01-01 | 中国矿业大学 | A kind of concentration of emulsion used detection method and detection device |
-
2011
- 2011-07-19 CN CN 201120254614 patent/CN202182873U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253119A (en) * | 2011-07-19 | 2011-11-23 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
| CN102253119B (en) * | 2011-07-19 | 2013-03-06 | 中煤科工集团重庆研究院 | Emulsion concentration online detection system and ultrasonic receiving circuit thereof |
| CN107462630A (en) * | 2017-08-16 | 2017-12-12 | 中国石油化工股份有限公司 | A kind of polymer concentration detection method and equipment based on sound velocity method |
| CN109115717A (en) * | 2018-07-16 | 2019-01-01 | 中国矿业大学 | A kind of concentration of emulsion used detection method and detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120404 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |