CN208818606U - A kind of automatic weighing formula digital display fluid density counter device - Google Patents
A kind of automatic weighing formula digital display fluid density counter device Download PDFInfo
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- CN208818606U CN208818606U CN201821446151.XU CN201821446151U CN208818606U CN 208818606 U CN208818606 U CN 208818606U CN 201821446151 U CN201821446151 U CN 201821446151U CN 208818606 U CN208818606 U CN 208818606U
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Abstract
The utility model provides a kind of automatic weighing formula digital display fluid density counter device, including automatic test cell, industrial personal computer unit, metal bath unit, key display unit and power supply unit；Metal bath unit includes two groups of metal bath temperature control tanks, and every group of metal bath temperature control tank includes sample test slot position, sample preheating slot position and float preheating slot position；Weighing sensor is fixed on electric pushrod in automatic test cell, and float is hung on the hook of weighing sensor；Electric pushrod, weighing sensor and temperature sensor are electrically connected with industrial personal computer unit respectively；Industrial personal computer unit is electrically connected with key display unit and power supply unit.The utility model controls electric pushrod using industrial personal computer unit, and temperature measurement and float gravity measurement during automatic measurement are realized using temperature sensor and weighing sensor, it can be quickly obtained sample liquids actual density value, improve the working efficiency of density counter device and the accuracy of measurement result.
Description
Technical field
The utility model relates to field of measuring technique, specifically, being related to a kind of automatic weighing formula digital display liquid densimeter
Device.
Background technique
Traditional Westphal balance method, bottle method isodensity detection method test operation are cumbersome, and measurement result is vulnerable to environment
Either objectively or subjectively factor influences for temperature, range estimation scale mark etc., and measurement range is narrow, amount of samples is big, test equipment cleaning is difficult
Deng.With the development of electronic technology, the development of automatic digital display liquid densimeter technology has tended to mature, automatic digital display liquid densimeter
It can be achieved easy to operate, measurement process is automatic quickly, accurate, the advantages that being repeated several times, and equipment calculates measurement result, nothing automatically
Manual conversion is needed, plant maintenance is convenient.
Utility model content
In place of solving above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of automatic weighing formulas
Digital display fluid density counter device and its Density Detection method, to overcome defect in the prior art.
To achieve the goals above, the utility model provides a kind of automatic weighing formula digital display fluid density counter device, institute
Stating automatic weighing formula digital display fluid density counter device includes that automatic test cell, industrial personal computer unit, metal bath unit, key are shown
Unit and power supply unit；Wherein, metal bath unit includes two groups of metal bath temperature control tanks, and metal bath temperature control tank described in every group includes one
A sample test slot position, a sample preheating slot position and a float preheat slot position, are coated with outside the metal bath temperature control tank
Mica thermal insulation board；There is semiconductor chilling plate and electrically heated rod, semiconductor chilling plate and electricity add inside the metal bath temperature control tank
Hot pin is electrically connected with industrial personal computer unit respectively；Automatic test cell includes electric pushrod, weighing sensor, temperature sensor and floats
Son；Electric pushrod is movably disposed at the top of sample test slot position, and weighing sensor is fixed on electric pushrod, described floating
Son is hung on the hook of weighing sensor；Temperature sensor is movably disposed at the top of sample test slot position, electric pushrod,
Weighing sensor and temperature sensor are electrically connected with industrial personal computer unit respectively；Industrial personal computer unit and key display unit and power supply list
Member electrical connection.
Through the above technical solutions, metal bath unit uses two groups of independent temperature control tanks, and temperature control tank uses metal bath
As thermostat, have the function of quickly adjusting temperature control tank temperature up and down；Using high temperature resistant, low heat conductivity mica every
Hot plate realizes effective heat-insulated, heat insulation function, effectively raises the accuracy of measurement result；Temperature control tank is partly led using refrigeration
Body piece realizes refrigerating function, by adjusting the size of operating current, conveniently adjusted refrigerating speed, semiconductor chip speed of action
Fastly, work is quiet, long service life；Heating function is realized using electrically heated rod, electrically heated rod heating speed is fast, is easy and fast to rise
Temperature control system；In measurement process, electric pushrod is controlled using industrial personal computer unit, and using high-precision temperature sensor and
Weighing sensor realizes the temperature measurement and float gravity measurement during automatic measurement, is based on the industry control of Archimedes buoyancy principle
Machine unit can be quickly obtained sample liquids actual density value, observed temperature value, standard density value, volume factor value etc., improve
The working efficiency of density counter device and the accuracy of measurement result.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, industrial personal computer unit is electrically connected by GPIO interface with electric pushrod and signal is connect, to control the start and stop of electric pushrod sliding
And direction, and industrial personal computer unit exports the sliding speed of control electric pushrod by pwm pulse.
Through the above technical solutions, carrying out start and stop and direction controlling to electric pushrod using industrial personal computer unit, and it is based on PWM
Pulse data output, realizes the adjusting of the sliding speed of electric pushrod, makes the motor of electric pushrod that bracket be driven to slide up and down, into
And realize that the automatic of float lifts speed regulation function up and down, to guarantee that measurement is more accurate, more stable and reliable.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, industrial personal computer unit are connect with semiconductor chilling plate and electrically heated rod electrical connection and signal by GPIO interface, are partly led with control
The start and stop of start and stop and the electrically heated rod heating of body cooling piece refrigeration, and industrial personal computer unit passes through pwm pulse output control described half
The heating speed of the refrigerating speed of conductor cooling piece and the electrically heated rod.
Through the above technical solutions, start-up and shut-down control is carried out to semiconductor chilling plate and electrically heated rod using industrial personal computer unit,
And the control of the refrigeration and heating speed of semiconductor chilling plate and heating rod is realized, according to output to guarantee perseverance based on PWM pulse number
Warm slot can be rapidly heated and freeze.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, is provided with driven stirring rod above sample test slot position, and industrial personal computer unit is electrically connected by GPIO interface and driven stirring rod
It connects and is connected with signal, to control the start and stop of driven stirring rod stirring, and industrial personal computer unit exports control electric mixing by pwm pulse
Mix the mixing speed of stick.
Through the above technical solutions, sample test slot configures driven stirring rod, using industrial personal computer unit to driven stirring rod
It is controlled, before testing, automatic stirring is carried out to liquid, realize that fluid to be measured temperature is uniform, reduce measurement error.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground moves between the sample test slot position of electric pushrod metal bath temperature control tank described in two groups, and electric pushrod is in every a sample
It is moved up and down above test groove.
Through the above technical solutions, two groups of temperature control tanks share an electric pushrod, can after a test trough is measured,
It is engraved in another test trough to measure, saves time and cost.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, sample test slot position are configured with sealing cover, and the top ring of sample test slot position is equipped with inductor, and the sealing cover lid is located at institute
It states on inductor, the inductor is electrically connected with industrial personal computer unit.
Through the above technical solutions, test trough configures sealing cover when measurement volatile liquid, realization prevents volatile liquid
Volatilization leads to the function of measurement error.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, industrial personal computer unit is electrically connected by RS422 interface with weighing sensor and signal is connect, and industrial personal computer unit reads weighing and sensing
The gravity survey data of device；Industrial personal computer unit is electrically connected by UART interface with temperature sensor and signal is connect, industrial personal computer list
Member reads the temperature detection data of temperature sensor.
Through the above technical solutions, being realized using industrial personal computer unit logical to the data of weighing sensor and temperature sensor
Letter realizes temperature measurement and float gravity measurement during automatic measurement.
As the further explanation to automatic weighing formula digital display fluid density counter device described in the utility model, preferably
Ground, power supply unit include that AC220 turns DC12V power regulator module and power supply monitoring control circuit.
It is each unit through the above technical solutions, turning DC12V power regulator module using high-effect, low-power consumption AC220
Reliable and stable DC12V operating voltage is provided；Using power supply monitoring control circuit, real-time automatic monitoring function is provided, work is worked as
When current anomaly, the power supply to other units in addition to industrial personal computer unit will be stopped immediately.
In order to realize the another object of the utility model, the utility model, which additionally provides, a kind of utilizes the automatic weighing
1) the Density Detection method of formula digital display fluid density counter device, the Density Detection method include the following steps: in sample test
20ml pure water is respectively added in slot position and sample preheating slot position, float is put into the float preheating slot position of corresponding metal bath and is added
Temperature preheating；2) fluid sample that volume is 350ml is poured into beaker, and to be placed in sample pre- by the beaker equipped with fluid sample
Heat channel is preheated in position；Alternatively, 3) beaker equipped with fluid sample is placed in sample test slot position, electric pushrod is moved
It moves right above the sample test slot position for needing to measure, the float for being up to temperature requirement hangs over weighing and sensing on electric pushrod
On the hook of device；4) mobile temperature sensor is into beaker, and starts driven stirring rod stirring fluid sample, makes liquid-like product temperature
Degree is uniform；5) industrial personal computer unit control electric pushrod sequence lifts float 3 times, lifts float 3 times again, and float is waited to be in quiet
Only equilibrium state, weighing sensor carry out gravity measurement, are measured for the first time, repeat second of progress and measure, survey twice
Amount is completed, and electric pushrod rises to position when beginning automatically；6) industrial personal computer unit calculates two according to gravity measurement numerical value twice
Secondary standard density difference and average standard density value, volume factor value.
The utility model has the beneficial effects that
1, the utility model is based on Archimedes buoyancy principle, drives the automatic of float to lift up and down using electric pushrod,
And the temperature measurement and float gravity measurement of temperature sensor and weighing sensor in measurement process, and it is based on WinCE work
The automatic control of control machine and high-speed data processing technique realize the data processing for being measured rear high speed, can be quickly obtained sample
Liquid actual density value, observed temperature value, standard density value, volume factor value etc., improve the working efficiency of density counter device
With the accuracy of measurement result；
2, the utility model has the function for quickly adjusting the up and down of temperature control tank temperature using metal bath as thermostat
Can, and two groups of independent temperature control tanks are set, it can be measured twice simultaneously；
3, temperature control tank realizes effective heat-insulated, heat insulation function, effectively using high temperature resistant, the mica thermal insulation board of low heat conductivity
The accuracy for improving measurement result；
4, temperature control tank realizes heating function using electrically heated rod, and electrically heated rod heating speed is fast, is easy and fast to heating control；
Temperature control tank using refrigeration semiconductor piece realize refrigerating function, by adjust operating current size, conveniently adjusted refrigerating speed,
Semiconductor chip work fast, work is quiet, long service life.
Detailed description of the invention
Fig. 1 is the general frame figure of the automatic weighing formula digital display fluid density counter device of the utility model；
Fig. 2 is the structural schematic diagram of the automatic weighing formula digital display fluid density counter device of the utility model；
Fig. 3 is that the interface of the industrial personal computer unit of the utility model connects block diagram.
Specific embodiment
In order to further appreciate that the structure, feature and other purposes of the utility model, now in conjunction with appended preferable implementation
Example is accompanied by attached drawing, and detailed description are as follows, this attached drawing embodiment described is merely to illustrate the technical solution of the utility model, and
Non-limiting the utility model.
As depicted in figs. 1 and 2, Fig. 1 is the overall frame of the automatic weighing formula digital display fluid density counter device of the utility model
Composition；Fig. 2 is the structural schematic diagram of the automatic weighing formula digital display fluid density counter device of the utility model；The automatic weighing formula
Digital display fluid density counter device includes automatic test cell 1, industrial personal computer unit 2, metal bath unit 3, key display unit 4 and electricity
Source unit 5；Wherein, metal bath unit 3 includes two groups of metal bath temperature control tanks, and metal bath temperature control tank described in every group includes a sample
31, sample preheating slot positions 32 of test groove and a float preheat slot position 33, and metal bath unit uses two groups of independent controls
Warm slot, and temperature control tank uses metal bath as thermostat, has the function of quickly adjusting temperature control tank temperature up and down；It opens
After dynamic temperature control tank temperature control, heating preheating is carried out to float using preheating float slot, realizes and more accurately measures function；In addition, surveying
When measuring volatile liquid, sample test slot position 31 is configured with sealing cover, and realization prevents volatile liquid volatilization from leading to measurement error
Function, the top ring of sample test slot position 31 is equipped with inductor, and the sealing cover lid is located on the inductor, the induction
Device is electrically connected with industrial personal computer unit 2, and when not having sealing cover in sample test slot position 31, industrial personal computer unit 2 can be reminded, and avoids testing
Evaporating in the process influences result.Mica thermal insulation board 34, and mica thermal insulation board 34 are coated with outside the metal bath temperature control tank
Sample test slot position 31, sample preheating slot position 32 and a float preheating slot position 33 are separated, using high temperature resistant, low heat conductivity
Mica thermal insulation board, realize effective heat-insulated, heat insulation function, effectively raise the accuracy of measurement result, and sample is surveyed
Temperature control between experimental tank position 31, sample preheating slot position 32 and a float preheating slot position 33 is independent of each other；The metal bath temperature control
There is semiconductor chilling plate 35 and electrically heated rod 36 (not showing in Fig. 2), semiconductor chilling plate 35 and electrically heated rod 36 inside slot
It is electrically connected respectively with industrial personal computer unit 2, temperature control tank realizes heating function using electrical bar, and electrical bar heating speed is fast, is easy to fast
Speed heating control；And it is based on Peltier principle, the material with thermoelectric energy transfer characteristic has refrigeration when passing through direct current
Function, semiconductor material have optimal thermoelectric energy conversion performance characteristic, and temperature control tank realizes refrigeration using semiconductor chilling plate
Function, by adjusting the size of operating current, conveniently adjusted refrigerating speed, semiconductor chip work fast, work is quiet, makes
It is long with the service life.Semiconductor chip work fast, work is quiet, and long service life realizes quick temperature controlling function, reduces maintenance
Cost solves the problems such as bring condensing agent leakage in conventional refrigeration equipment process of refrigerastion, compressor vibration.It is particularly suitable for surveying
Amount crude oil, lubricating oil, residual oil etc. need the liquid of vicidity of constant temperature and needs to measure under the conditions of specific low temperature temperature
The liquid density measurement of volatile oil product.
Fig. 2 is please referred to, automatic test cell 1 includes electric pushrod 11, driven stirring rod 12, weighing sensor 13, temperature
Sensor 14 and float；Electric pushrod 11 is movably disposed at the top of sample test slot position 31, and electric pushrod 11 is at two groups
It is moved between the sample test slot position 31 of the metal bath temperature control tank, and electric pushrod 11 is in the upper of each sample test slot position 31
Side moves up and down, and two groups of temperature control tanks share a set of measurement component, can be engraved in another test after a test trough is measured
Slot measures, and saves time and cost；Weighing sensor 13 is fixed on electric pushrod 11, and the float is hung on weighing and sensing
On the hook of device 13, the motor control electric pushrod 11 of electric pushrod 11 is slided up and down, so that float lifts up and down automatically；It is electronic
Stirring rod 12 is movably erected at 31 top of sample test slot position, and before testing, driven stirring rod 12 is displaced downwardly to sample test
Automatic stirring is carried out to liquid in slot position 31, realizes that fluid to be measured temperature is uniform, reduces measurement error, electric mixing at the end of test
It mixes stick 12 and moves up reset；Temperature sensor 14 is movably disposed at the top of sample test slot position 31, and in test, temperature is passed
Sensor 14 is displaced downwardly in sample test slot position 31, and temperature sensor 14 moves up reset at the end of test；Electric pushrod 11, electric mixing
It mixes stick 12, weighing sensor 13 and temperature sensor 14 to be electrically connected with industrial personal computer unit 2 respectively, industrial personal computer unit passes through PWM arteries and veins
The punching output control sliding speed of electric pushrod 11, the mixing speed of driven stirring rod, semiconductor chilling plate refrigerating speed with
And the heating speed of electrically heated rod.
Fig. 3 is please referred to, Fig. 3 is that the interface of the industrial personal computer unit of the utility model connects block diagram；Industrial personal computer unit 2 is using high
Efficiency, low-power consumption WinCE industrial personal computer (be purchased from Ying Chuan Information Technology Co., Ltd, model EM9281).WinCE industrial personal computer is adopted
With AMR core microprocessor, support that Windows CE operating system, Windows CE operating system are the one of Microsoft's exploitation
A general-purpose operating system for small device, operation dominant frequency reach as high as 1GHz, support 256M DDR2 memory and large capacity
SD storage card integrates UART serial ports, RS422 interface, RS232 interface, USB interface etc., supports GPS, GPRS, sensor, acquisition
The Function Extensions such as module, product are surveyed by -40 DEG C~+85 DEG C stringent technical grade the high and low temperature test, industrial four level electromagnetic compatibles
Examination, meets the industrial application of various environmental condition harshnesses.Meet the measurement of density counter device fast density, measurement result processing
With mass data storage demand, the working efficiency and measurement accuracy of density counter device are improved.
Fig. 3 is please referred to, rgb interface and UART serial ports are based on, industrial personal computer unit 2 is electrically connected with key display unit 4, is realized
The crystal display and realization touch-screen button scanning function of video and picture and text, key display unit 4 is using high-resolution
Color liquid crystal touch display screen realizes the presentation of liquid crystal display low-power consumption and high performance image quality, realizes the people of convenient close friend
Machine exchanges interface, realizes that conveniently liquid density measurement operates, and realizes that clearly measurement process is shown, realizes measurement result
The operation such as quick search, deletion and printing of record.Setting temperature control button, starting measurement key, starting density conversion are pressed
Key is to start metal bath temperature control.
Fig. 3 is please referred to, based on PWM pulse number according to output, the adjusting of the sliding speed of electric pushrod is realized, is connect based on GPIO
Mouthful, industrial personal computer unit 2 is electrically connected with electric pushrod 11, realizes start and stop and the direction controlling of the sliding of electric pushrod, and then realize
Float is lifted in measurement process up and down；Based on PWM pulse number according to output, realizes the adjusting of the mixing speed of stirring rod, be based on
GPIO interface, industrial personal computer unit 2 are electrically connected with driven stirring rod 12, realize the start and stop of stirring rod stirring, before realizing that measurement starts
Stirring to liquid；Based on PWM pulse number according to output, the control of the refrigeration and heating speed of semiconductor chilling plate and heating rod is realized
System is based on GPIO interface, and industrial personal computer unit 2 is electrically connected with semiconductor chilling plate 35 and electrically heated rod 36, realizes refrigeration and heating
Start and stop；Based on RS422 interface, industrial personal computer unit 2 is electrically connected with weighing sensor 13, is realized logical with the data of weighing sensor
Letter, realizes the reading of gravity survey data；Based on UART serial ports, industrial personal computer unit 2 is electrically connected with temperature sensor 14, realize with
The data communication of temperature sensor realizes the reading of the measurement data of fluid temperature in metal bath temperature control tank.
Fig. 3 and Fig. 1 are please referred to, UART serial ports is based on, industrial personal computer unit 2 is electrically connected with power supply unit 5, is realized and power supply list
The real time monitoring function to power supply unit is realized in the communication of member；Power supply unit 5 is turned using high-effect, low-power consumption AC220
DC12V power supply pressure stabilizing mould 51 provides reliable and stable DC12V work for automatic weighing formula digital display fluid density counter device each unit
Voltage；Real-time automatic monitoring function is realized using power supply monitoring control circuit, when operating current exception, will be stopped immediately to removing
The power supply of other units outside industrial personal computer unit, and industrial personal computer unit is notified to carry out circulation sound fault alarm.
Fig. 3 is please referred to, IIS interface is based on, industrial personal computer unit 2 is electrically connected with SD card, realizes the write-in and reading of SD card；Base
In RS422 interface, industrial personal computer unit 2 and printing mechatronics realize the data communication with printer, realize beating for measurement record
Function is printed, printer function is optional function；Based on USB interface, industrial personal computer unit 2 and calculating mechatronics are realized and are calculated
The data communication of machine realizes the program maintenance function of arm processor, realizes the parameter setting and query function of equipment, realizes and surveys
Measure record queries and read functions；Based on digital power amplifier technology, industrial personal computer unit 2 is electrically connected with loudspeaker, is raised using high-quality
Sound device realizes the broadcasting of digit synthesis voice and prompt tone.
The utility model additionally provides a kind of density inspection using the automatic weighing formula digital display fluid density counter device
Survey method.
The sample that test is sampled and prepared according to standard requirements, in sample test slot position 31 and sample preheating slot position 32
It is each that 20ml pure water is added, float is put into the float preheating slot position 33 of corresponding metal bath and carries out heating preheating；By what is prepared
Fluid sample pours into test beaker, the volume of fluid sample about 350ml (at a temperature of measurement), and fluid sample will be housed
Beaker is placed in sample preheating slot position 32 and is preheated, and after the completion of preheating, the beaker equipped with sample is put into corresponding sample
In test trough 31；If beaker can be directly placed in sample test slot 31 by sample without preheating；To volatile sample,
After being put into test trough, need to cover sealing cover, then carry out the work such as temperature control, measurement.
Electric pushrod 11 is moved to right above the sample test slot position 31 for needing to measure, the float of temperature requirement is up to
On the hook for hanging over the weighing sensor 13 on electric pushrod 11；Liquid density measurement process point several stages carry out: moving for the first time
Secondly dynamic temperature sensor 14 starts driven stirring rod 12 and stirs fluid sample, keep fluid sample temperature uniform into beaker；It stirs
After mixing, industrial personal computer unit 2 controls electric pushrod 11 and sequentially lifts float 3 times, lifts float 3 times again, waits at float
In rest equilibrium state, weighing sensor 13 carries out gravity measurement, is measured for the first time, repeats second of progress and measures,
It is measured twice, electric pushrod 11 rises to position when beginning automatically.
After the completion of test, industrial personal computer unit 2 is according to the calculating standard twice density difference of gravity measurement numerical value twice and averagely
Standard density value, volume factor value.Wherein, Archimedes buoyancy principle, F are based onIt is floating=ρLiquidgVRow, ρ liquid is fluid density, and g attaches most importance to
Force constant, V row are the volume that immerses the float of liquid, and F floats as float suffered buoyancy in a liquid.Liquid is submerged in float
And gravity measurement, F are carried out after stable stateIt is floating=GObject-GWeight, F floats as float suffered buoyancy in a liquid, and G object is floating
The weight of son, G weight are that float submerges the weight claimed after liquid.Test terminates, and removes float, is put into after scrubbing with group gold
In the pre- heat channel of float for belonging to bath.Refer to table 1 carries out the experimental data interface that density measure obtains by sample of crude oil.
Table 1
The range that this density counter device measures fluid density is 600.00kg/m3~1100.00kg/m3.
Temperature-measuring range: 0 DEG C~120 DEG C；
Thermometric resolving power: 0.1 DEG C；
Temperature control range: 2 DEG C~100 DEG C；
Temperature-controlled precision: ± 0.2 DEG C；
High-precision weighing module uses 0.1~1mg precision module, and density accuracy reaches ± 0.3kg/m3(room temperature ±
0.2kg/m3)。
It is to be understood that above-mentioned utility model content and specific embodiment are intended to prove the provided skill of the utility model
The practical application of art scheme should not be construed as the restriction to scope of protection of the utility model.Those skilled in the art are practical at this
In novel spirit and principle, when can various modifications may be made, equivalent replacement or improvement.The protection scope of the utility model is with appended power
Subject to sharp claim.
Claims (8)
1. a kind of automatic weighing formula digital display fluid density counter device, which is characterized in that the automatic weighing formula digital display fluid density
Counter device includes automatic test cell (1), industrial personal computer unit (2), metal bath unit (3), key display unit (4) and power supply list
First (5)；Wherein,
Metal bath unit (3) includes two groups of metal bath temperature control tanks, and metal bath temperature control tank described in every group includes a sample test slot
Position (31), sample preheating slot position (32) and a float preheat slot position (33), are coated with outside the metal bath temperature control tank
Mica thermal insulation board (34)；There is semiconductor chilling plate (35) and electrically heated rod (36), semiconductor inside the metal bath temperature control tank
Cooling piece (35) and electrically heated rod (36) are electrically connected with industrial personal computer unit (2) respectively；
Automatic test cell (1) includes electric pushrod (11), weighing sensor (13), temperature sensor (14) and float；It is electronic
Push rod (11) is movably disposed at the top of sample test slot position (31), and weighing sensor (13) is fixed on electric pushrod (11)
On, the float is hung on the hook of weighing sensor (13)；Temperature sensor (14) is movably disposed at sample test slot
The top of position (31), electric pushrod (11), weighing sensor (13) and temperature sensor (14) are electric with industrial personal computer unit (2) respectively
Connection；
Industrial personal computer unit (2) is electrically connected with key display unit (4) and power supply unit (5).
2. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that industrial personal computer unit (2)
It is electrically connected by GPIO interface with electric pushrod (11) and signal is connect, to control the start and stop and side of electric pushrod (11) sliding
To, and industrial personal computer unit (2) exports the sliding speed of control electric pushrod (11) by pwm pulse.
3. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that industrial personal computer unit (2)
It is connect by GPIO interface with semiconductor chilling plate (35) and electrically heated rod (36) electrical connection and signal, to control semiconductor refrigerating
The start and stop of start and stop and electrically heated rod (36) heating of piece (35) refrigeration, and industrial personal computer unit (2) passes through pwm pulse output control half
The refrigerating speed of conductor cooling piece (35) and the heating speed of electrically heated rod (36).
4. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that in sample test slot position
(31) top is provided with driven stirring rod (12), and industrial personal computer unit (2) is electrically connected by GPIO interface with driven stirring rod (12)
It is connected with signal, to control the start and stop of driven stirring rod (12) stirring, and industrial personal computer unit (2) is exported by pwm pulse and controlled
The mixing speed of driven stirring rod (12).
5. automatic weighing formula digital display fluid density counter device as claimed in claim 2, which is characterized in that electric pushrod (11) exists
It is moved between the sample test slot position (31) of metal bath temperature control tank described in two groups, and electric pushrod (11) is in each sample test slot
It is moved up and down above position (31).
6. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that sample test slot position
(31) it is configured with sealing cover, the top ring of sample test slot position (31) is equipped with inductor, and the sealing cover lid is located at the induction
On device, the inductor is electrically connected with industrial personal computer unit (2).
7. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that industrial personal computer unit (2)
It is electrically connected by RS422 interface with weighing sensor (13) and signal is connect, industrial personal computer unit (2) reads weighing sensor (13)
Gravity survey data；Industrial personal computer unit (2) is electrically connected by UART interface with temperature sensor (14) and signal is connect, industry control
Machine unit (2) reads the temperature detection data of temperature sensor (14).
8. automatic weighing formula digital display fluid density counter device as described in claim 1, which is characterized in that power supply unit (5) packet
It includes AC220 and turns DC12V power regulator module (51) and power supply monitoring control circuit (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821446151.XU CN208818606U (en) | 2018-09-05 | 2018-09-05 | A kind of automatic weighing formula digital display fluid density counter device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821446151.XU CN208818606U (en) | 2018-09-05 | 2018-09-05 | A kind of automatic weighing formula digital display fluid density counter device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872010A (en) * | 2018-09-05 | 2018-11-23 | 泉州市全通光电科技有限公司 | A kind of automatic weighing formula digital display fluid density counter device and its Density Detection method |
-
2018
- 2018-09-05 CN CN201821446151.XU patent/CN208818606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872010A (en) * | 2018-09-05 | 2018-11-23 | 泉州市全通光电科技有限公司 | A kind of automatic weighing formula digital display fluid density counter device and its Density Detection method |
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