CN206469934U - A kind of device of on-line measurement fluid density and liquid level - Google Patents
A kind of device of on-line measurement fluid density and liquid level Download PDFInfo
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- CN206469934U CN206469934U CN201720117683.8U CN201720117683U CN206469934U CN 206469934 U CN206469934 U CN 206469934U CN 201720117683 U CN201720117683 U CN 201720117683U CN 206469934 U CN206469934 U CN 206469934U
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Abstract
The utility model discloses a kind of on-line measurement fluid density and the device of liquid level, including body, also include power supply module, data acquisition module, data processing module, data transmission module, the output end of the data acquisition module and the input of data processing module are connected；The output end of the data processing module and the input of data transmission module are connected；Input, the input of data processing module, the input of data transmission module of the output end of the power supply module respectively with data acquisition module are connected；Wherein, the data acquisition module includes having fixed vertical drop between first pressure sensor and second pressure sensor, and the first pressure sensor and second pressure sensor.Package unit is simple in construction, safe and reliable, and can also make level gauging by measuring the self-correcting of fluid density, realization to pressure sensor measurement result more accurately and reliably, be widely used in liquid measure field.
Description
Technical field
The utility model is related to liquid measure field, the dress of specially a kind of on-line measurement fluid density and liquid level
Put.
Background technology
Liquid level emasuring device, on the market now with the design and product of many same types, main Types have tuning fork vibrating type,
Maglev type, pressure type, ultrasonic wave, sonar ripple, magnetic turnover panel, radar etc., but almost all of liquid level sensor all can not be simultaneously
Take into account the measurement to fluid density.
201110409473.3 (patents of invention) disclose a kind of pressure liquid level sensor, including density sensor, pressure
Sensor and controller.This patent will also have density sensor, somewhat expensive in addition to needing pressure sensor；It is relatively single
For sensor, not easy care when two kinds of sensor is used for a long time.
201210572031.5 (patents of invention) disclose have in a kind of Internet of Things fluid level measuring instrument, measuring instrument three it is high-precision
Degree capacitive pressure transducer is detected in real time to tested liquid level, atmospheric pressure and the second measured value, including balancer, air pressure hold
Device, check valve, gas making piston, motor, triple valve, Internet of Things net unit etc., this patent structure is complicated, somewhat expensive, inner member
Composition is excessive, reliable long-term working is low.
Therefore, the technology is necessary to improve.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of low cost, high reliability, Neng Gou
Line accurately measures the device of fluid density and liquid level.
The technical scheme that the utility model is used is：
The utility model provides the device of a kind of on-line measurement fluid density and liquid level, including body, in addition to supplies
Power supply module, data acquisition module, data processing module, data transmission module, the output end of the data acquisition module with
The input connection of data processing module；The output end of the data processing module and the input of data transmission module are connected；
The output end of power supply module input respectively with data acquisition module, the input of data processing module, data
The input connection of transport module；Wherein, the data acquisition module includes first pressure sensor and second pressure sensor,
And there is fixed vertical drop between the first pressure sensor and second pressure sensor.
As the improvement of the technical scheme, the data processing module includes signal isolation unit, information memory cell, liquid
Position computing unit, density computing unit, liquid level correction unit and communications interface unit；The output end of the signal isolation unit with
The input connection of information memory cell, the output end of described information memory cell and the input of the liquid level computing unit connect
Connect, the output end of the liquid level computing unit is connected with the input of density computing unit, the output of the density computing unit
The input for correcting unit with liquid level is held to be connected, the defeated place end of the liquid level correction unit and the input of communications interface unit connect
Connect.
As the improvement of the technical scheme, the first pressure sensor and second pressure sensor are digital pressure
Sensor.
As the improvement of the technical scheme, the signal isolation unit includes the chip with signal isolation function.
As the improvement of the technical scheme, described information memory cell includes the chip with information storage function.
Further, the data transmission module includes wire transmission and/or is wirelessly transferred.
Further, the wire transmission is carried out data transmission by serial data bus.
Further, described device is additionally provided with antenna, and the antenna is placed in body upper part, described to be wirelessly transferred by antenna
Carry out data transmission.
The beneficial effects of the utility model are：
A kind of on-line measurement fluid density and the device of liquid level that the utility model is provided, can accurately measure liquid online
Volume density and liquid level, package unit are simple in construction, safe and reliable.
On the other hand, to be used not only for impure to liquid juice, sewage etc. more or Multiple components mixed for the device
The liquid of conjunction and the density of weak erosive liquid are measured, additionally it is possible to by measuring fluid density, realizing to pressure sensing
The self-correcting of device measurement result, makes level gauging more accurately and reliably.
Brief description of the drawings
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the module connection figure of the utility model first embodiment；
Fig. 2 is the structural representation of the utility model second embodiment；
Fig. 3 is the RS485 communications interface unit schematic diagrames of the embodiment of the utility model one；
Fig. 4 is the signal isolation cell schematics of the embodiment of the utility model one；
Fig. 5 is the GPRS radio communication schematic diagrames of the embodiment of the utility model one；
Fig. 6 is the information memory cell schematic diagram of the embodiment of the utility model one；
Fig. 7 is the control flow chart of the embodiment of the utility model one.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
Reference picture 1, the utility model provides the device of a kind of on-line measurement fluid density and liquid level, including body,
Also include power supply module, data acquisition module, data processing module (including microprocessor), data transmission module, it is described
The output end of data acquisition module and the input of data processing module are connected；The output end and data of the data processing module
The input connection of transport module；The output end of power supply module input respectively with data acquisition module, data
The input connection of the input, data transmission module of processing module；Wherein, the data acquisition module is passed including first pressure
There is fixed vertical height between sensor and second pressure sensor, and the first pressure sensor and second pressure sensor
Degree is poor.
As the improvement of the technical scheme, the data processing module includes signal isolation unit, information memory cell, liquid
Position computing unit, density computing unit, liquid level correction unit and communications interface unit；The output end of the signal isolation unit with
The input connection of information memory cell, the output end of described information memory cell and the input of the liquid level computing unit connect
Connect, the output end of the liquid level computing unit is connected with the input of density computing unit, the output of the density computing unit
The input for correcting unit with liquid level is held to be connected, the defeated place end of the liquid level correction unit and the input of communications interface unit connect
Connect.
As the improvement of the technical scheme, the first pressure sensor and second pressure sensor are digital pressure
Sensor.
As the improvement of the technical scheme, the signal isolation unit includes the chip with signal isolation function.It is preferred that
, the chip model of the signal isolation unit is 74LV244APW.
As the improvement of the technical scheme, described information memory cell includes the chip with information storage function.It is preferred that
, the chip model of described information memory cell is S25FL064P0XMFI001.
Further, the data transmission module includes wire transmission and/or is wirelessly transferred.
Further, the wire transmission is carried out data transmission by serial data bus, such as RS485.
Further, described device is additionally provided with antenna, and the antenna is placed in body upper part, described to be wirelessly transferred by antenna
Carry out data transmission, such as GPRS.
The technical solution adopted in the utility model is by data processing module (including density computing unit, liquid level computing unit
Correct unit with liquid level), power supply module, data (pressure) acquisition module, the composition such as wireless transport module.
Composition and explanation：
(1) data processing module
Microprocessor EFM32GG380 is the processing core of the device, and reference picture 1 is the module composition signal of an embodiment
Figure, the microprocessor run signal isolated location, information memory cell, liquid level under embedded OS driving calculate single
Member, density computing unit, liquid level correction unit, communications interface unit.The digital quantity signal that data collecting module collected is arrived passes through
Data storage cell is stored to collection information, is gathered information and is passed through microprocessor through on off state detection module output information
Whether the pressure acquisition module that device sends a signal to continues the foundation of collection.Microprocessor is received by its communications interface unit
After on/off instruction, i.e., the voltage and communications status of data acquisition module are obtained, to determine to perform data acquisition module
Collection judges operation.
A. signal isolation unit
The unit is first isolated the data that the collection of pressure acquisition module is delivered to data processing module, level translation,
Information memory cell is passed to again after stable to be stored.
B. information memory cell
The unit is first stored the data that the collection of pressure acquisition module is delivered to data processing module, after stable again
Liquid level computing module is passed to be analyzed.
C. liquid level computing unit
The unit is by reading the data of information memory cell, with reference to liquid level algorithmic formula：With initially set
The fluid density ρ put0, the density of water is typically initially set to, primary Calculation goes out liquid level h1And h2。
D. density computing unit
The unit is by reading the data of liquid level computing unit, according to △ h=h2-h1For a determination value；With reference to fluid density
Algorithmic formula：Calculate the exact value ρ of fluid density.
E. liquid level corrects unit
The unit is by reading the data ρ of density computing unit, liquid level algorithmic formula：Calculate liquid level
Exact height
F. communications interface unit
The communications interface unit can receive the long-range acquisition instructions to pressure acquisition module by wired or wireless mode.
Wired communication mode refers mainly to RS485 communication bus, and agreement is standard MODBUS agreements；Wireless mode refers mainly to GPRS communication parties
Formula.
(2) power supply module
The module mainly provides power supply (DC5V or DC12V) to complete equipment, it is desirable to pass through certain explosion-proof criteria, energy
Realize certain overvoltage, excessively stream, overheat protective function.
(3) pressure acquisition module
The module is mainly made up of cable, pressure sensor one and pressure sensor two, wherein pressure sensor one, pressure
The hydraulic pressure collected is converted into after data signal by force snesor two respectively, can be transferred data to by RS485 data/address bus
Data processing module.
(4) data transmission module
Data processing module is mainly handled the data such as corrected fluid density and liquid level by the module, can be to have
The teletransmission of line transmission means does decision references to rear platform for administrative staff；The instruction from platform, and execution pair are received simultaneously
The actions such as the collection or stopping collection answering；Can certainly wirelessly it be transmitted, such as GPRS.
The utility model embodiment provides a kind of device of online accurate measurement fluid density and liquid level, reference picture
2, it is used as an embodiment, the density and liquid level of the measurement device sewage 7；The device is placed under the well lid 1 of bilge well 4, its
Described in device body be provided with antenna 2, in addition to mainframe box 3, the mainframe box 3 includes supplying cell module, at data
Module, wireless transport module etc. are managed, the sensor 1 and sensor 29 are connected by cable 5 with mainframe box 3, the survey
Examination hall scape also includes drainage pipeline networks 6.Mainly include supplying cell module, data processing module, wireless transport module in mainframe box 3
Deng mainframe box 3 is connected by anti-water hole and antenna 2, and data are wirelessly transferred into user platform.The mainframe box 3
Also there is waterproof anti-explosion function.The sensor 8, sensor 9 are placed in inside bilge well 4, the top of sand sediment trap 10, can be while quilt
The sewage 7 of the inside is submerged, and meet sensor 8, sensor 9 bottom level difference be a steady state value.
Reference picture 3-6, is each unit circuit diagram of the utility model embodiment.The signal isolation unit includes tool
There is the chip of signal isolation function.It is preferred that, the chip model of the signal isolation unit is 74LV244APW.
Described information memory cell includes the chip with information storage function.It is preferred that, described information memory cell
Chip model is S25FL064P0XMFI001.
The data transmission module includes wire transmission and/or is wirelessly transferred.
The wire transmission is carried out data transmission by serial data bus, such as RS485.
Data processing module is mainly handled the data such as corrected fluid density and liquid level by data transmission module, can
With teletransmission in a wired fashion to rear platform, decision references are done for administrative staff；The instruction from platform is received simultaneously, and is performed
Corresponding collection stops the action such as collection；It can also wirelessly be transmitted, such as GPRS.
Reference picture 7, is the control flow chart of the embodiment of the utility model one.On the device after electricity, entered by double water-level gauges
Row pressure data is gathered, to be collected to terminate, and the data received are decoded and obtain institute by density algorithm process by described device
Fluid density is surveyed, and the density data calculated is handled by liquid level correcting algorithm obtains surveyed liquid level, and by liquid
Density and liquid level data transfer are to user platform.
Main feature of the present utility model includes：The utility model can realize online accurate measurement fluid density and liquid level
Highly, the liquid of impure to liquid juice, sewage etc. more or Multiple components mixing and weak corrosion can not only be realized
Property liquid density measure, additionally it is possible to by measuring fluid density, realizing self-correcting to pressure sensor data, liquid level
Measurement is more accurately and reliably.Package unit is simple in construction, safe and reliable, it is adaptable to which measuring environment is complicated and to measurement accuracy requirement
Harsh occasion.
Above is preferable implementation of the present utility model is illustrated, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent changes on the premise of without prejudice to the utility model spirit
Shape or replacement, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (8)
1. the device of a kind of on-line measurement fluid density and liquid level, including body, it is characterised in that also including power supply
At module, data acquisition module, data processing module, data transmission module, the output end and data of the data acquisition module
Manage the input connection of module；The output end of the data processing module and the input of data transmission module are connected；It is described to supply
Input, the input of data processing module, the data transfer mould of the output end of power supply module respectively with data acquisition module
The input connection of block；Wherein, the data acquisition module includes first pressure sensor and second pressure sensor, and described
There is fixed vertical drop between first pressure sensor and second pressure sensor.
2. the device of on-line measurement fluid density according to claim 1 and liquid level, it is characterised in that：The data
Processing module includes signal isolation unit, information memory cell, liquid level computing unit, density computing unit, liquid level correction unit
And communications interface unit；The output end of the signal isolation unit and the input of information memory cell are connected, and described information is deposited
The output end of storage unit is connected with the input of the liquid level computing unit, the output end and densitometer of the liquid level computing unit
The input connection of unit is calculated, the output end of the density computing unit is connected with the input that liquid level corrects unit, the liquid
The defeated place end of bit correction unit and the input of communications interface unit are connected.
3. the device of on-line measurement fluid density according to claim 1 or 2 and liquid level, it is characterised in that：It is described
First pressure sensor and second pressure sensor are digital pressure sensor.
4. the device of on-line measurement fluid density according to claim 3 and liquid level, it is characterised in that：The signal
Isolated location includes the chip with signal isolation function.
5. the device of on-line measurement fluid density according to claim 4 and liquid level, it is characterised in that：Described information
Memory cell includes the chip with information storage function.
6. the device of on-line measurement fluid density according to claim 5 and liquid level, it is characterised in that：The data
Transport module includes wire transmission and/or is wirelessly transferred.
7. the device of on-line measurement fluid density according to claim 6 and liquid level, it is characterised in that：It is described wired
Transmission is carried out data transmission by serial data bus.
8. the device of on-line measurement fluid density according to claim 6 and liquid level, it is characterised in that：Described device
Antenna is additionally provided with, the antenna is placed in body upper part, and described be wirelessly transferred is carried out data transmission by antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117683.8U CN206469934U (en) | 2017-02-08 | 2017-02-08 | A kind of device of on-line measurement fluid density and liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117683.8U CN206469934U (en) | 2017-02-08 | 2017-02-08 | A kind of device of on-line measurement fluid density and liquid level |
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| CN206469934U true CN206469934U (en) | 2017-09-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279056A (en) * | 2018-03-02 | 2018-07-13 | 中山市知科应用科技研究有限公司 | A kind of signal wireless transmission and self-powered liquid level detection device |
| CN108593043A (en) * | 2018-06-28 | 2018-09-28 | 国网上海市电力公司 | The measuring apparatus of conservator liquid level for project of transmitting and converting electricity |
| CN108791722A (en) * | 2018-03-01 | 2018-11-13 | 煤炭科学技术研究院有限公司 | A kind of measurement method and device of marine hydraulic hold useful load |
| CN112798465A (en) * | 2019-11-13 | 2021-05-14 | Abb瑞士股份有限公司 | Measuring system for determining a property of a liquid in a container |
-
2017
- 2017-02-08 CN CN201720117683.8U patent/CN206469934U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791722A (en) * | 2018-03-01 | 2018-11-13 | 煤炭科学技术研究院有限公司 | A kind of measurement method and device of marine hydraulic hold useful load |
| CN108791722B (en) * | 2018-03-01 | 2020-12-29 | 煤炭科学技术研究院有限公司 | Method and device for measuring loading capacity of ship liquid tank |
| CN108279056A (en) * | 2018-03-02 | 2018-07-13 | 中山市知科应用科技研究有限公司 | A kind of signal wireless transmission and self-powered liquid level detection device |
| CN108593043A (en) * | 2018-06-28 | 2018-09-28 | 国网上海市电力公司 | The measuring apparatus of conservator liquid level for project of transmitting and converting electricity |
| CN112798465A (en) * | 2019-11-13 | 2021-05-14 | Abb瑞士股份有限公司 | Measuring system for determining a property of a liquid in a container |
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