CN105136240A - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
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- CN105136240A CN105136240A CN201510244356.4A CN201510244356A CN105136240A CN 105136240 A CN105136240 A CN 105136240A CN 201510244356 A CN201510244356 A CN 201510244356A CN 105136240 A CN105136240 A CN 105136240A
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- liquid level
- display screen
- microprocessor
- register
- sensor
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Abstract
The invention discloses a liquid level sensor which comprises a housing, a microprocessor, a dwell vessel, a display screen, a density sensor, a pressure sensor, a mini motor, a power supply module and a wire wheel, wherein the housing comprises a T-shaped pipe including a later pipe and a handheld pipe and a longitudinal pipe, the power supply module is arranged on the right side in the handheld pipe, the mini motor is arranged on the left side of the power supply module, the wire wheel is arranged on the left side of the mini motor, the display screen is arranged on the upper surface of the lateral pipe, the microprocessor and the dwell vessel are arranged under the display screen, a foraminous waterproof separator plate is arranged in the longitudinal pipe, the pressure sensor passes through the foraminous waterproof separator plate via a signal transmission line and connects with the wire wheel, and the density sensor is arranged on the longitudinal pipe. The density sensor and the pressure sensor are connected through the microprocessor, and the density sensor and the pressure sensor send real-time measured values to the microprocessor for many times. The liquid level of the detected liquid is calculated, and the liquid level change can be measured in short time.
Description
Technical field
The invention belongs to sensor technical field, be specifically related to a kind of liquid level sensor.
Background technology
Current liquid level sensor has been widely used in the measurement under various situation and environment, according to the difference of its principle of work, liquid level sensor can be divided into a variety of, comprise: ultrasonic liquid level sensor, radar level sensor and pressure liquid level sensor etc., wherein, pressure liquid level sensor is the most widely used one in above-mentioned liquid level sensor.
Existing pressure liquid level sensor is according to known scheme mostly, goes by fluid density and pressure the degree of depth measuring liquid level.
But, during controller process detection signal due to pressure liquid level sensor, the fluid density of controller inner setting and the actual density of fluid to be measured have difference, so just, the liquid level making sensor obtain creates certain error, therefore, the measuring accuracy of current pressure liquid level sensor is not high.
Summary of the invention
An object of the present invention is for solving the problems of the prior art, provides a kind of and measures accurate liquid level sensor.
The invention provides a kind of liquid level sensor, comprising: shell, microprocessor, register, display screen, density sensor, pressure transducer, micromachine, power module and line are taken turns; Described shell comprises T-shaped pipe and longitudinal tubule (L tubule), and described T-shaped pipe comprises transverse tube and hand-held pipe, and described hand-held pipe inner right side is provided with described power module, is described micromachine on the left of described power module, is connected with described line wheel on the left of described micromachine; Described transverse tube upper surface is provided with described display screen, is provided with described microprocessor and register below described display screen; Be provided with a waterproof bulkhead with holes in described longitudinal tubule (L tubule), described pressure transducer is connected to described line wheel by signal transmssion line through described waterproof bulkhead with holes; Described longitudinal tubule (L tubule) is also provided with described density sensor;
Described power module connects described microprocessor, register, display screen, density sensor, pressure transducer and micromachine, and powers;
Described density sensor connects described register, and deposits to described register by the fluid density information of measurement;
Described microprocessor connects described register, display screen and pressure transducer, described microprocessor obtains the pressure that fluid density information in described register and pressure transducer record, carry out process and obtain liquid level information, described liquid level information transmission to described display screen is shown simultaneously.
Further, described hand-held pipe is provided with a switch valve, and described switch valve is connected with described micromachine, for controlling its switch.
Further, described display screen is LED display.
Further, described power module comprises charging inlet, and described charging inlet is exposed to outside described hand-held pipe right-hand member.
Beneficial effect of the present invention is, a kind of liquid level sensor provided by the invention, density sensor is connected by microprocessor with pressure transducer, real-time measurement values repeatedly can be transferred to microprocessor by density sensor and pressure transducer, and calculate the liquid level of fluid to be measured, greatly improve the measuring accuracy of liquid level relative to prior art, the measurement of liquid level change in the short time can be applied to.
Accompanying drawing explanation
Figure 1 shows that the cut-open view of a kind of liquid level sensor of the present invention.
Figure 2 shows that the vertical view of a kind of liquid level sensor of the present invention.
Embodiment
Hereafter will describe the specific embodiment of the invention in detail in conjunction with concrete accompanying drawing.It should be noted that the combination of technical characteristic or the technical characteristic described in following embodiment should not be considered to isolated, they can mutually be combined thus be reached better technique effect.
As shown in Figures 1 and 2, the invention provides a kind of liquid level sensor, comprising: shell, microprocessor 1, register 2, display screen 3, density sensor 4, pressure transducer 5, micromachine 6, power module 7 and line wheel 8; Shell comprises T-shaped pipe and longitudinal tubule (L tubule), and T-shaped pipe comprises transverse tube and hand-held pipe, and hand-held pipe inner right side is provided with power module 7, is micromachine 6 on the left of power module 7, connects wiredly to take turns 8 on the left of micromachine 6; Transverse tube upper surface is provided with display screen 3, is provided with microprocessor 1 and register 2 below display screen 3; Be provided with a waterproof bulkhead 9 with holes in longitudinal tubule (L tubule), pressure transducer 5 is connected to line wheel 8 by signal transmssion line through waterproof bulkhead 9 with holes; Longitudinal tubule (L tubule) is also provided with density sensor 4;
Power module 7 connects microprocessor 1, register 2, display screen 3, density sensor 4, pressure transducer 5 and micromachine 6, and powers;
Density sensor 4 connects register 2, and deposits to register 2 by the fluid density information of measurement;
Microprocessor 1 connects register 2, display screen 3 and pressure transducer 5, microprocessor 1 obtains the pressure that fluid density information in register 2 and pressure transducer 5 record, carry out process and obtain liquid level information, liquid level information transmission is shown to display screen 3 simultaneously.
Further, hand-held pipe is provided with a switch valve 10, and switch valve 10 is connected with micromachine 6, for controlling its switch.
Further, display screen 3 is LED display.
Further, power module 7 comprises charging inlet, and charging inlet is exposed to outside hand-held pipe right-hand member.
Embodiment:
Measuring principle of the present invention is: pressure transducer 5 for while obtaining the force value in liquid to microprocessor 1 transmission pressure information, microprocessor 1 obtains the liquid level value of liquid according to force value and fluid density mean value.Pressure formula is: P=ρ gH, wherein H is the degree of depth that pressure transducer 5 drops into fluid to be measured, P is the liquid pressure of the degree of depth instantly, ρ is fluid to be measured density average, g is local gravitational acceleration, therefore, pressure transducer 5 is according to the fluid to be measured density average ρ received and measure and obtain sensor and meet the pressure P that liquid level is subject to, and calculates fluid to be measured liquid level H=Δ P/ ρ x.g.
When measuring, micromachine 6 is started by switch valve 10, micromachine 6 is with moving-wire to take turns 8 and is rotated, put down pressure transducer 5, density sensor 4 to be immersed in liquid simultaneously and real-time many groups density information is transferred to register 2 and store, after microprocessor 1 obtains density information and pressure information simultaneously, first many group density informations and pressure information are averaged; Then to carrying out process computing, shown by display screen 3, thus liquid level information can be obtained fast and accurately.After finishing using, again press switch valve 10, make micromachine 6 antiport, just recoverable pressure transducer 5.
A kind of liquid level sensor provided by the invention, density sensor 4 is connected by microprocessor 1 with pressure transducer 5, real-time measurement values repeatedly can be transferred to microprocessor 1 by density sensor 4 and pressure transducer 5, and calculate the liquid level of fluid to be measured, greatly improve the measuring accuracy of liquid level relative to prior art, the measurement of liquid level change in the short time can be applied to.
Although give some embodiments of the present invention, it will be understood by those of skill in the art that without departing from the spirit of the invention herein, can change embodiment herein.Above-described embodiment is exemplary, should using embodiment herein as the restriction of interest field of the present invention.
Claims (4)
1. a liquid level sensor, is characterized in that, comprising: shell, microprocessor, register, display screen, density sensor, pressure transducer, micromachine, power module and line are taken turns; Described shell comprises T-shaped pipe and longitudinal tubule (L tubule), and described T-shaped pipe comprises transverse tube and hand-held pipe, and described hand-held pipe inner right side is provided with described power module, is described micromachine on the left of described power module, is connected with described line wheel on the left of described micromachine; Described transverse tube upper surface is provided with described display screen, is provided with described microprocessor and register below described display screen; Be provided with a waterproof bulkhead with holes in described longitudinal tubule (L tubule), described pressure transducer is connected to described line wheel by signal transmssion line through described waterproof bulkhead with holes; Described longitudinal tubule (L tubule) is also provided with described density sensor;
Described power module connects described microprocessor, register, display screen, density sensor, pressure transducer and micromachine, and powers;
Described density sensor connects described register, and deposits to described register by the fluid density information of measurement;
Described microprocessor connects described register, display screen and pressure transducer, described microprocessor obtains the pressure that fluid density information in described register and pressure transducer record, carry out process and obtain liquid level information, described liquid level information transmission to described display screen is shown simultaneously.
2. a kind of liquid level sensor as claimed in claim 1, is characterized in that, described hand-held pipe is provided with a switch valve, and described switch valve is connected with described micromachine, and described switch valve is for controlling the switch of described micromachine.
3. a kind of liquid level sensor as claimed in claim 1, is characterized in that, described display screen is LED display.
4. a kind of liquid level sensor as claimed in claim 1, is characterized in that, described power module comprises charging inlet, and described charging inlet is exposed to outside described hand-held pipe right-hand member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244356.4A CN105136240A (en) | 2015-05-13 | 2015-05-13 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244356.4A CN105136240A (en) | 2015-05-13 | 2015-05-13 | Liquid level sensor |
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| Publication Number | Publication Date |
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| CN105136240A true CN105136240A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510244356.4A Pending CN105136240A (en) | 2015-05-13 | 2015-05-13 | Liquid level sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928825A (en) * | 2016-04-18 | 2016-09-07 | 张立臣 | Portable instrument for detecting liquid level and density of medium |
| CN107091791A (en) * | 2017-07-06 | 2017-08-25 | 青岛澳邦量器有限责任公司 | A kind of on-line automatic gauge of storage tank |
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| US4625553A (en) * | 1985-04-12 | 1986-12-02 | Dresser Industries, Inc. | System to determine the level and weight of liquid in a tank or the like |
| CN1057435A (en) * | 1991-08-03 | 1992-01-01 | 赵仕俊 | Vertical distribution of liquid and liquid level are measured in the storage tanker method and measuring instrument |
| CN102445254A (en) * | 2011-12-19 | 2012-05-09 | 北京京仪海福尔自动化仪表有限公司 | Device for measuring liquid level in tracking mode |
| CN102519542A (en) * | 2011-12-09 | 2012-06-27 | 华为技术有限公司 | Pressure liquid level sensor |
| CN202420610U (en) * | 2011-12-22 | 2012-09-05 | 中华人民共和国嘉兴出入境检验检疫局 | Water measuring device |
| CN203274844U (en) * | 2013-04-18 | 2013-11-06 | 彭根深 | Subsider mud layer and density detector |
| CN104535138A (en) * | 2014-11-18 | 2015-04-22 | 华北有色工程勘察院有限公司 | Water level observation system for achieving automatic detection |
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2015
- 2015-05-13 CN CN201510244356.4A patent/CN105136240A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625553A (en) * | 1985-04-12 | 1986-12-02 | Dresser Industries, Inc. | System to determine the level and weight of liquid in a tank or the like |
| CN1057435A (en) * | 1991-08-03 | 1992-01-01 | 赵仕俊 | Vertical distribution of liquid and liquid level are measured in the storage tanker method and measuring instrument |
| CN102519542A (en) * | 2011-12-09 | 2012-06-27 | 华为技术有限公司 | Pressure liquid level sensor |
| CN102445254A (en) * | 2011-12-19 | 2012-05-09 | 北京京仪海福尔自动化仪表有限公司 | Device for measuring liquid level in tracking mode |
| CN202420610U (en) * | 2011-12-22 | 2012-09-05 | 中华人民共和国嘉兴出入境检验检疫局 | Water measuring device |
| CN203274844U (en) * | 2013-04-18 | 2013-11-06 | 彭根深 | Subsider mud layer and density detector |
| CN104535138A (en) * | 2014-11-18 | 2015-04-22 | 华北有色工程勘察院有限公司 | Water level observation system for achieving automatic detection |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928825A (en) * | 2016-04-18 | 2016-09-07 | 张立臣 | Portable instrument for detecting liquid level and density of medium |
| CN105928825B (en) * | 2016-04-18 | 2019-03-01 | 张立臣 | A kind of portable medium liquid level density tester |
| CN107091791A (en) * | 2017-07-06 | 2017-08-25 | 青岛澳邦量器有限责任公司 | A kind of on-line automatic gauge of storage tank |
| CN107091791B (en) * | 2017-07-06 | 2023-09-22 | 青岛澳邦量器有限责任公司 | Online automatic metering instrument for storage tank |
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Application publication date: 20151209 |