CN201622097U - Ultrasonic gasoline tank oil level sensor - Google Patents
Ultrasonic gasoline tank oil level sensor Download PDFInfo
- Publication number
- CN201622097U CN201622097U CN2009202281907U CN200920228190U CN201622097U CN 201622097 U CN201622097 U CN 201622097U CN 2009202281907 U CN2009202281907 U CN 2009202281907U CN 200920228190 U CN200920228190 U CN 200920228190U CN 201622097 U CN201622097 U CN 201622097U
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model provides an ultrasonic gasoline tank oil level sensor comprising a probe, a signal generator, a data acquisition device and a data processing device, wherein the probe is provided with an inversed signal generator and the data acquisition device which are respectively connected with the data processing device; the probe is provided with an inversed ultrasonic emitting/receiving device; the sensor also comprises a filter, an amplifier, a wave detector and a CPU which are connected in sequence; the ultrasonic emitting/receiving device is used as the signal generator and the data acquisition device; and the filter, the amplifier, the wave detector and the CPU are used as the data processing devices. The sensor has lower cost, high non-contact measuring accuracy, programmable height and strong anti-interference capability.
Description
Technical field
The utility model relates to a kind of sensor, particularly relates to a kind of petrol tank fuel level sensor.
Background technology
The application of Level Detection is very wide in jar.The method of Level Detection has the hand gauging method in jar, uses methods such as machined steel belt liquid level instrument, servo-type liquid level instrument or radar level gauge, and the method that detects liquid level by laser, gamma-rays.The hand gauging method is to utilize immersion scale metallic tape measuring liquid level, and operating personnel need climb to the top of storage tank and measure; The shortcoming of this method is that measuring accuracy is low, and speed is slow, and labour intensity is big, is not easy to computer management.Machined steel belt liquid level instrument drive disk assembly is many, and reliability is relatively poor, and is because of installing in the needs jar, difficult in maintenance again.Servo-type liquid level instrument belongs to the mechanical type measurement mechanism, and mechanical wear can directly influence its measuring accuracy, needs periodic maintenance and demarcation again, and mission life is not very long, and the repeatable accuracy of measurement is lower, and difficulty is installed.The measuring accuracy of radar level gauge is higher, but comparatively complexity is installed, and prices are rather stiff.The velocity of propagation of laser is very fast, is not easy to signal Processing.Gamma-rays liquid level instrument has used radioactive source, easily causes the pollution to environment.
Existing petrol tank oil level detection has adopted above-mentioned the whole bag of tricks, and its corresponding shortcoming is all arranged:
1. the liquid level in the small area in real time, the error of measurement is bigger automatically.
Cost height, volume ratio big, trouble is installed.
3. the response time is grown and makes measured value often produce hysteresis quality.
4. performance is stable inadequately, and is relatively poor to the adaptability of the physicochemical property of liquid.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of ultrasonic gasoline fuel level in tank sensor is provided, and this sensor price is lower, non-cpntact measurement precision height, and highly able to programme, antijamming capability is strong.
The technical scheme that the utility model adopted is: ultrasonic gasoline fuel level in tank sensor comprises probe, signal generator, data collector and data processing equipment.The signal generator and the data collector of reversal connection are housed on the probe, and signal generator is connected with data processing equipment respectively with data collector.Signal generator sends ultrasound wave by probe, obtains echoed signal by data collector, by data processing equipment echoed signal is handled then.
Ultrasonic emitting/the receiving trap of reversal connection is housed on the probe, and described sensor also comprises wave filter, amplifier, wave detector, CPU, and they join successively; Ultrasonic emitting/receiving trap is as signal generator and data collector, and wave filter, amplifier, wave detector, CPU are as data processing equipment.CPU can comprise the PWM module, and external CAN bus, fuel oil instrument and temperature sensor.Ultrasonic emitting/receiving trap can adopt MOSFET to drive.
The utility model is big in order to overcome traditional fuel tank level gauging error, and environment for use requires high shortcoming, proposes a kind of ultrasonic gasoline fuel level in tank sensor, and it compared with prior art mainly contains following remarkable result:
1. adopt untouchable detection method, the measuring accuracy height;
2. highly able to programme;
3. adopt special-purpose filtering algorithm, have than strong anti-interference ability;
4.CAN bus output, it is more efficient to transmit data;
5. temperature compensation makes the working environment requirement lower;
6. emission is shared with receiver module, makes one-piece construction compacter;
Emission time receiving transducer signal not, in order to improve its reliability;
8. under-voltage output alarm, safer when making work;
9. the electric current that drives instrument can be adjusted;
10. aanalogvoltage output is provided;
11. adopt energy-conservation MOSFET (metal oxide semiconductor field effect tube) to drive, low in energy consumption.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model.
Fig. 2 is the utility model user mode synoptic diagram.
Fig. 3 is the ultrasonic sensor structured flowchart.
Among the figure: 1. ultrasonic transmitter; 2. ultrasonic receiver; 3. end cap; 4. oil tank wall; 5. ultrasonic emitting/receiving trap; 6. plug cock; 7. oily; 8. fuel tank.
Embodiment
The principle of ultrasonic liquid level measuring method is based on the aerial velocity of propagation of ultrasound wave and runs into the testee surface and produces the principle of reflection.Ultrasonic gasoline fuel level in tank sensor comprises probe, signal generator, data collector and data processing equipment, its annexation is: the signal generator (for example ultrasonic transmitter 1) and the data collector (for example ultrasonic receiver 2) of reversal connection are housed on the probe, and signal generator is connected with data processing equipment respectively with data collector.
Ultrasonic gasoline fuel level in tank working sensor process is: signal generator sends ultrasound wave by probe, obtains echoed signal by data collector, by data processing equipment echoed signal is handled then.
As shown in Figure 3, the ultrasonic emitting/receiving trap 5 of reversal connection can be housed on the probe, described sensor also comprises wave filter, amplifier, wave detector, CPU, and they join successively; Ultrasonic emitting/receiving trap 5 is as signal generator and data collector, and wave filter, amplifier, wave detector, CPU are as data processing equipment.
Described CPU comprises the PWM module, and external CAN bus, fuel oil instrument and temperature sensor.
Ultrasonic emitting/receiving trap 5 of the present utility model can adopt energy-conservation MOSFET to drive.
Ultrasonic emitting/receiving trap 5 comprises ultrasonic transmitter 1 and ultrasonic receiver 2; Ultrasonic transmitter 1 is amplified to 20V to satisfy the driving requirement of ultrasonic emitting with the pulse signal of the 40KHz that CPU sends here; Ultrasonic receiver 2 is transferred to data processing equipment with the echo that receives, and by data processing equipment echoed signal is amplified and shaping, is converted to the look-at-me of CPU at last.
The utility model can be applicable on the petrol tank oil-level measurement.The utility model adopts the transit time detection method, and concrete using method is: ultrasonic transmitter 1 is 20V in amplitude, and frequency is under the square wave drive of 40KHz, sends the ultrasound wave that frequency is 40KHz; Ultrasound wave is met the barrier back reflection, receives echo by ultrasonic receiver 2; Measure the ultrasonic pulse string and be emitted to and receive the required time T of echoed signal, can calculate the distance L of popping one's head between the barrier according to formula L=uT/2, wherein u is hyperacoustic velocity of propagation.
The utility model height is able to programme, and adopts special-purpose filtering algorithm, has than strong anti-interference ability; The output of CAN bus makes that the transmission data are more efficient; The utility model also has temperature compensation function, makes the working environment requirement lower; Emission is shared with receiver module, makes one-piece construction compacter; In order to improve the reliability of ultrasonic emitting/receiving trap, receiving transducer signal not in the time of emission; The utility model also has under-voltage output alarm function, and is safer when making work; The electric current that drives instrument can be adjusted, and aanalogvoltage output is provided; The utility model adopts energy-conservation MOSFET (metal oxide semiconductor field effect tube) to drive, and is low in energy consumption.Echo analysis height of the present utility model intellectuality can filter out various interference, the identification multiple echo, can also analyte signal intensity and environment temperature etc. for information about, even if reading also is accurate under the disturbed conditions having like this.
Embodiment:
CPU of the present utility model can adopt single-chip microcomputer, and its main task is that the train of impulses that 1. sends 40KHz is used for driving ultrasonic transmitter 1 and sends ultrasound wave; 2. by the single-chip microcomputer second timer hyperacoustic transmission time is carried out timing; 3. go out data such as distance, volume with relevant calculation of parameter according to the time of measuring; 4. the demonstration of the input of controlled variable and data.Transmitter 1 in described ultrasonic emitting/receiving trap 5, the pulse signal of the 40KHz that single-chip microcomputer can be sent here are amplified to 20V to satisfy the driving requirement of ultrasonic emitting.Receiver 2 in described ultrasonic emitting/receiving trap 5 comprises that amplification, voltage ratio and part such as look-at-me output, are used for the echo that receives is amplified and shaping, is about to the look-at-me that echoed signal converts single-chip microcomputer to.
It is the core circuit of whole ultrasonic ripple petrol tank fuel level sensor that single-chip microcomputer and peripheral circuit thereof are formed.It drives ultrasonic transmitter 1 emission ultrasound wave by the pulse signal that the single-chip microcomputer first timer sends 40KHz; It also measures hyperacoustic transmission time by the single-chip microcomputer second timer; Measure the data that calculate various needs after the time as requested.
As depicted in figs. 1 and 2, ultrasonic transmitter 1 is 20V in amplitude, and frequency is under the square wave drive of 40KHz, sends the ultrasound wave that frequency is 40KHz, meets barrier (top of oil 7) back reflection, receives echo by ultrasonic receiver 2.Because ultrasound wave is constant with the velocity of propagation in a kind of medium, therefore can measure the ultrasonic pulse string by the single-chip microcomputer second timer is emitted to and receives the required time T of echoed signal, can calculate the distance L of popping one's head between the barrier according to formula L=uT/2, wherein u is hyperacoustic velocity of propagation.Among Fig. 1, ultrasonic emitting/receiving trap 5 be positioned at end cap 3 on, H be the bottom of oil tank wall 4 to the distance of end cap 3, h be oily 7 height.Among Fig. 2, plug cock 6 is equipped with on the top, side of end cap 3, and oil 7 is positioned at fuel tank 8.This sensor is not only on the petrol tank oil-level measurement, and is also similar in the measuring method of oil tank oil level, cistern water level.
Claims (5)
1. ultrasonic gasoline fuel level in tank sensor, it is characterized in that: it comprises probe, signal generator, data collector and data processing equipment; The signal generator and the data collector of reversal connection are housed on the probe, and signal generator is connected with data processing equipment respectively with data collector.
2. sensor according to claim 1 is characterized in that: the ultrasonic emitting/receiving trap of reversal connection is housed on the probe, and described sensor also comprises wave filter, amplifier, wave detector, CPU, and they join successively; Ultrasonic emitting/receiving trap is as signal generator and data collector, and wave filter, amplifier, wave detector, CPU are as data processing equipment.
3. sensor according to claim 2 is characterized in that: described CPU comprises the PWM module, and external CAN bus, fuel oil instrument and temperature sensor.
4. sensor according to claim 2 is characterized in that: ultrasonic emitting/receiving trap adopts MOSFET to drive.
5. sensor according to claim 2 is characterized in that: ultrasonic emitting/receiving trap comprises ultrasonic transmitter and ultrasonic receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202281907U CN201622097U (en) | 2009-09-18 | 2009-09-18 | Ultrasonic gasoline tank oil level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202281907U CN201622097U (en) | 2009-09-18 | 2009-09-18 | Ultrasonic gasoline tank oil level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622097U true CN201622097U (en) | 2010-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202281907U Expired - Fee Related CN201622097U (en) | 2009-09-18 | 2009-09-18 | Ultrasonic gasoline tank oil level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622097U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297715A (en) * | 2011-05-18 | 2011-12-28 | 西安定华电子有限公司 | Self-correcting measurement system and method of outside measurement liquid level switch |
| CN104390678A (en) * | 2014-11-21 | 2015-03-04 | 广西智通节能环保科技有限公司 | Oil level measuring sensor |
| CN105067082A (en) * | 2015-07-31 | 2015-11-18 | 广州华凌制冷设备有限公司 | Dehumidifier and water level detection method and device thereof |
| CN106595812A (en) * | 2016-12-22 | 2017-04-26 | 滁州市康达叉车零部件制造有限公司 | Liquid level sensor based on resonance sound frequency of closed container cavity |
| CN106706077A (en) * | 2016-11-18 | 2017-05-24 | 郑州格兰高环境工程有限公司 | Method for using ultrasonic wave liquid level gauge to accurately measure liquid level |
| CN112504395A (en) * | 2020-11-30 | 2021-03-16 | 中建八局轨道交通建设有限公司 | Receiving and transmitting integrated ultrasonic oil level gauge |
| CN113588045A (en) * | 2021-07-08 | 2021-11-02 | 浙江新图维电子科技有限公司 | System and method for detecting oil level of cable oil filling terminal based on ultrasonic ranging |
-
2009
- 2009-09-18 CN CN2009202281907U patent/CN201622097U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297715A (en) * | 2011-05-18 | 2011-12-28 | 西安定华电子有限公司 | Self-correcting measurement system and method of outside measurement liquid level switch |
| CN102297715B (en) * | 2011-05-18 | 2012-09-19 | 西安定华电子有限公司 | Self-correcting measurement system and method of outside measurement liquid level switch |
| CN104390678A (en) * | 2014-11-21 | 2015-03-04 | 广西智通节能环保科技有限公司 | Oil level measuring sensor |
| CN105067082A (en) * | 2015-07-31 | 2015-11-18 | 广州华凌制冷设备有限公司 | Dehumidifier and water level detection method and device thereof |
| CN106706077A (en) * | 2016-11-18 | 2017-05-24 | 郑州格兰高环境工程有限公司 | Method for using ultrasonic wave liquid level gauge to accurately measure liquid level |
| CN106595812A (en) * | 2016-12-22 | 2017-04-26 | 滁州市康达叉车零部件制造有限公司 | Liquid level sensor based on resonance sound frequency of closed container cavity |
| CN112504395A (en) * | 2020-11-30 | 2021-03-16 | 中建八局轨道交通建设有限公司 | Receiving and transmitting integrated ultrasonic oil level gauge |
| CN113588045A (en) * | 2021-07-08 | 2021-11-02 | 浙江新图维电子科技有限公司 | System and method for detecting oil level of cable oil filling terminal based on ultrasonic ranging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20110918 |