CN213274472U - Ultrasonic liquid level meter with inclination angle detection function - Google Patents
Ultrasonic liquid level meter with inclination angle detection function Download PDFInfo
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- CN213274472U CN213274472U CN202022365825.7U CN202022365825U CN213274472U CN 213274472 U CN213274472 U CN 213274472U CN 202022365825 U CN202022365825 U CN 202022365825U CN 213274472 U CN213274472 U CN 213274472U
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Abstract
The utility model discloses a take ultrasonic wave level gauge of inclination detection function, including casing, outer power supply, external device, the upper end surface including the casing is provided with liquid crystal display, inside including the casing is provided with singlechip, inclination sensor, transmission drive circuit, receiving circuit, memory, receiving circuit's output port is connected with filter circuit, filter circuit's output is connected with logarithmic amplifier. A take ultrasonic wave level gauge of inclination detection function, can show current ultrasonic wave level gauge and the inclination of surveyed the liquid level surface in real time, measure more accurately, convenience of customers makes corresponding adjustment.
Description
Technical Field
The utility model relates to a level gauge technical field, in particular to take ultrasonic wave level gauge of inclination detection function.
Background
The height of a liquid medium in a container is called as a liquid level, along with the increasing of the production automation level, the measurement and control of the liquid level in industrial production are increasingly common, an instrument for continuously measuring the height of the liquid medium in the container is a liquid level meter, and the liquid level meter is suitable for the liquid level measurement of various media in systems and industries such as petrochemical industry, metallurgy, electric power, pharmacy, water supply and drainage, environmental protection and the like.
The ultrasonic liquid level meter is a digital liquid level meter controlled by a microprocessor, high-frequency ultrasonic pulses are sent out by an ultrasonic transducer, sound waves are reflected when encountering the surface of the liquid level to be measured, partial reflected echoes are received by the ultrasonic transducer and converted into electric signals, the ultrasonic liquid level meter calculates the height of the liquid level by utilizing the time difference between sound wave transmission and reception and the sound wave propagation speed, and the measured medium is almost not limited due to non-contact measurement, so that the ultrasonic liquid level meter can be stably and reliably applied to various open type tanks and can be used for measuring the heights of various liquid and solid materials;
because the ultrasonic liquid level meter utilizes sound wave reflection to determine the liquid level height, if ultrasonic transducer does not have perpendicular to the measured liquid level when the installation, the sound wave of launching can form certain angle with the liquid level, just so make the distance that the sound wave retroreflected to ultrasonic transducer lengthen, cause liquid level height measurement's error, can make the sound wave of retroreflection weaken simultaneously, influence ultrasonic transducer and receive the transmission echo, cause losing of data, current ultrasonic liquid level meter does not have the function of detecting the angle, can only rely on manual operation to make ultrasonic transducer perpendicular to the measured liquid level as far as possible, the installation is loaded down with trivial details, the precision can't be guaranteed, produce very big influence to ultrasonic liquid level meter's normal use, in order to solve above-mentioned problem, we have provided an ultrasonic liquid level meter of taking the inclination to detect the.
Disclosure of Invention
The utility model discloses a main aim at provides a take inclination to detect ultrasonic wave level gauge of function can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a take ultrasonic wave level gauge of inclination to detect function, includes casing, outer power supply, external device, upper end surface including the casing is provided with liquid crystal display, inside including the casing is provided with singlechip, inclination sensor, transmission drive circuit, receiving circuit, memory, receiving circuit's output port is connected with filter circuit, filter circuit's output is connected with logarithmic amplifier.
Preferably, the outer surface of the upper end of the shell is provided with a control key close to the front of the liquid crystal display screen, and the input port of the single chip microcomputer is electrically connected with the output port of the control key.
Preferably, still be provided with temperature sensor, piezoelectric crystal including the inside of casing, all be provided with I2C bus between tilt sensor, temperature sensor and the singlechip, tilt sensor, temperature sensor all are connected with the singlechip through I2C bus, piezoelectric crystal's input port and transmission drive circuit's output port electric connection.
Preferably, a signal port of the memory is connected with a signal port of the single chip microcomputer, and an input port of the single chip microcomputer is electrically connected with an output port of the external power supply.
Preferably, an optical isolator is installed between the internal single chip microcomputer including the housing and the emission driving circuit, an input port of the emission driving circuit is electrically connected with an output port of the optical isolator, and an input port of the optical isolator is electrically connected with an output port of the single chip microcomputer.
Preferably, the input port of the receiving circuit is electrically connected to the output port of the piezoelectric crystal, the input port of the filter circuit is electrically connected to the output port of the receiving circuit, the input port of the logarithmic amplifier is electrically connected to the output port of the filter circuit, and the input port of the single chip microcomputer is electrically connected to the output port of the logarithmic amplifier.
Preferably, be provided with RS485 signal output circuit, alarm signal circuit, current signal output circuit between singlechip and the external equipment, through RS485 signal output circuit, alarm signal circuit, current signal output circuit electric connection between external equipment and the singlechip, the external equipment includes computer, secondary instrument.
Compared with the prior art, the utility model discloses following beneficial effect has: this take ultrasonic wave level gauge of inclination to detect function, send control command to the singlechip through the control button and begin work, through the inclination of inclination sensor measurement liquid level, then with inclination signal transmission to singlechip through I2C bus, the singlechip shows received signal transmission to liquid crystal display, can show current ultrasonic wave level gauge and the inclination of being surveyed the liquid level surface in real time, it is more accurate to measure, convenience of customers makes corresponding adjustment, the effect of use is better for traditional mode.
Drawings
FIG. 1 is a circuit block diagram of an ultrasonic level gauge with a dip angle detection function according to the present invention;
FIG. 2 is a schematic sectional view of an ultrasonic level gauge with a dip angle detection function according to the present invention;
FIG. 3 is a schematic view of the connection between the ultrasonic level gauge with the tilt angle detection function and the external device of the present invention;
fig. 4 is a schematic view of a top view of the ultrasonic level meter with an inclination angle detection function of the present invention.
In the figure: 1. comprises a shell; 2. a single chip microcomputer; 3. a tilt sensor; 4. a temperature sensor; 5. a piezoelectric crystal; 6. an emission drive circuit; 7. a photoelectric isolator; 8. a receiving circuit; 9. a filter circuit; 10. a logarithmic amplifier; 11. a liquid crystal display screen; 12. a control key; 13. a memory; 14. an RS485 signal output circuit; 15. an alarm signal circuit; 16. an external power supply; 17. a current signal output circuit; 18. and (5) externally connecting equipment.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-4, an ultrasonic liquid level meter with a tilt angle detection function comprises a housing 1, an external power supply 16 and an external device 18, wherein a liquid crystal display screen 11 is arranged on the outer surface of the upper end of the housing 1, a single chip microcomputer 2, a tilt angle sensor 3, an emission driving circuit 6, a receiving circuit 8 and a memory 13 are arranged in the housing 1, an output port of the receiving circuit 8 is connected with a filter circuit 9, and an output end of the filter circuit 9 is connected with a logarithmic amplifier 10.
The outer surface of the upper end of the shell 1 is provided with a control key 12 close to the front of the liquid crystal display screen 11, and the input port of the single chip microcomputer 2 is electrically connected with the output port of the control key 12.
Specifically, the single chip microcomputer 2 can be controlled through the control key 12.
Still be provided with temperature sensor 4, piezoelectric crystal 5 including the inside of casing 1, all be provided with I2C bus between tilt sensor 3, temperature sensor 4 and the singlechip 2, tilt sensor 3, temperature sensor 4 all are connected with singlechip 2 through I2C bus, piezoelectric crystal 5's input port and transmission drive circuit 6's output port electric connection.
Specifically, the angle of the liquid level and the temperature of the working environment can be measured through the tilt sensor 3 and the temperature sensor 4, and the high-frequency electric energy input by the emission driving circuit 6 is converted into ultrasonic waves through the piezoelectric crystal 5 and transmitted out.
The signal port of the memory 13 is connected with the signal port of the single chip microcomputer 2, and the input port of the single chip microcomputer 2 is electrically connected with the output port of the external power supply 16.
Specifically, the single chip microcomputer 2 can be powered by the external power supply 16, and the measured data can be stored by the memory 13.
The photoelectric isolator 7 is installed between the single chip microcomputer 2 and the emission driving circuit 6 in the shell 1, the input port of the emission driving circuit 6 is electrically connected with the output port of the photoelectric isolator 7, and the input port of the photoelectric isolator 7 is electrically connected with the output port of the single chip microcomputer 2.
In particular, the communication equipment can be protected from interference and damage from power ground loops and surges by the opto-isolator 7.
The input port of the receiving circuit 8 is electrically connected with the output port of the piezoelectric crystal 5, the input port of the filter circuit 9 is electrically connected with the output port of the receiving circuit 8, the input port of the logarithmic amplifier 10 is electrically connected with the output port of the filter circuit 9, and the input port of the single chip microcomputer 2 is electrically connected with the output port of the logarithmic amplifier 10.
Be provided with RS485 signal output circuit 14, alarm signal circuit 15, current signal output circuit 17 between singlechip 2 and the external device 18, through RS485 signal output circuit 14, alarm signal circuit 15, current signal output circuit 17 electric connection between external device 18 and the singlechip 2, external device 18 includes computer, secondary instrument.
Specifically, the single chip microcomputer 2 outputs signals to the external device 18 through the RS485 signal output circuit 14, the current signal output circuit 17 and the alarm signal circuit 15, and the measured liquid level inclination angle and the measured distance can be seen remotely through the external device 18.
It should be noted that, the utility model relates to an ultrasonic wave level gauge with dip angle detection function, the user presses control button 12 to send control command to singlechip 2 to begin working, the dip angle of liquid level is measured through dip angle sensor 3, then dip angle signal transmission is to singlechip 2 through I2C bus, singlechip 2 sends the received signal to liquid crystal display 11 to show, simultaneously, temperature sensor 4 can measure the temperature of working environment, then temperature signal transmission is to singlechip 2 through I2C bus, singlechip 2 automatically revises the sound velocity error that environmental temperature changes and produces, ensure that real-time measurement is accurate, photoelectric isolator 7 is installed between singlechip 2 and emission drive circuit 6, can protect communication equipment from the interference and damage of power ground wire return circuit and surge, emission drive circuit 6 transmits high-frequency electric energy to piezoelectric crystal 5, the piezoelectric crystal 5 converts the input high-frequency electric energy into mechanical power, i.e. ultrasonic wave, and then transmits the mechanical power, the receiving circuit 8 receives the reflected echo and converts the reflected echo into an electric signal, the electric signal effectively filters the frequency point of the specific frequency in the electric signal or the frequencies except the frequency point through the filter circuit 9 to obtain an electric signal of the specific frequency, the logarithmic amplifier 10 is connected with the filter circuit 9, amplifies the electric signal and transmits the amplified signal to the singlechip 2, the ultrasonic wave is transmitted to be received again, the time is in direct proportion to the distance between the sensor and the measured object, the singlechip 2 detects the time, calculates the measured distance according to the known sound velocity, sends the distance to the liquid crystal display screen 11 for displaying, signals are output to the external equipment 18 through the RS485 signal output circuit 14, the current signal output circuit 17 and the alarm signal circuit 15, and the measurement result can be seen remotely through the external equipment 18.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a take ultrasonic wave level gauge of inclination detection function, includes casing (1), outer power supply (16), external device (18), its characterized in that: the liquid crystal display device is characterized in that a liquid crystal display screen (11) is arranged on the outer surface of the upper end of the shell (1), a single chip microcomputer (2), an inclination angle sensor (3), a transmitting driving circuit (6), a receiving circuit (8) and a storage (13) are arranged in the shell (1), an output port of the receiving circuit (8) is connected with a filter circuit (9), and an output end of the filter circuit (9) is connected with a logarithmic amplifier (10).
2. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 1, wherein: the liquid crystal display screen is characterized in that a control key (12) is arranged on the outer surface of the upper end of the shell (1) in front of the liquid crystal display screen (11), and an input port of the single chip microcomputer (2) is electrically connected with an output port of the control key (12).
3. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 1, wherein: still be provided with temperature sensor (4), piezoelectric crystal (5) including the inside of casing (1), all be provided with the I2C bus between inclination sensor (3), temperature sensor (4) and singlechip (2), inclination sensor (3), temperature sensor (4) all are connected with singlechip (2) through the I2C bus, the input port of piezoelectric crystal (5) and the output port electric connection of transmission drive circuit (6).
4. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 1, wherein: the signal port of the memory (13) is connected with the signal port of the single chip microcomputer (2), and the input port of the single chip microcomputer (2) is electrically connected with the output port of the external power supply (16).
5. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 1, wherein: a photoelectric isolator (7) is arranged between the internal single chip microcomputer (2) and the emission driving circuit (6) of the shell (1), an input port of the emission driving circuit (6) is electrically connected with an output port of the photoelectric isolator (7), and an input port of the photoelectric isolator (7) is electrically connected with an output port of the single chip microcomputer (2).
6. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 3, wherein: the input port of the receiving circuit (8) is electrically connected with the output port of the piezoelectric crystal (5), the input port of the filter circuit (9) is electrically connected with the output port of the receiving circuit (8), the input port of the logarithmic amplifier (10) is electrically connected with the output port of the filter circuit (9), and the input port of the singlechip (2) is electrically connected with the output port of the logarithmic amplifier (10).
7. The ultrasonic liquid level gauge with the inclination angle detection function according to claim 1, wherein: be provided with RS485 signal output circuit (14), alarm signal circuit (15), current signal output circuit (17) between singlechip (2) and external device (18), through RS485 signal output circuit (14), alarm signal circuit (15), current signal output circuit (17) electric connection between external device (18) and singlechip (2), external device (18) are the computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022365825.7U CN213274472U (en) | 2020-10-22 | 2020-10-22 | Ultrasonic liquid level meter with inclination angle detection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022365825.7U CN213274472U (en) | 2020-10-22 | 2020-10-22 | Ultrasonic liquid level meter with inclination angle detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624299A (en) * | 2021-09-03 | 2021-11-09 | 朱玉坤 | Automatic liquid level detection device of calibration |
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2020
- 2020-10-22 CN CN202022365825.7U patent/CN213274472U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624299A (en) * | 2021-09-03 | 2021-11-09 | 朱玉坤 | Automatic liquid level detection device of calibration |
| CN113624299B (en) * | 2021-09-03 | 2024-03-01 | 大庆市宝润达石油科技开发有限公司 | Automatic liquid level detection device of calibration |
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