CN108344486B - The infusion test method and device on charged state automatic correcting measuring basis - Google Patents
The infusion test method and device on charged state automatic correcting measuring basis Download PDFInfo
- Publication number
- CN108344486B CN108344486B CN201810271711.0A CN201810271711A CN108344486B CN 108344486 B CN108344486 B CN 108344486B CN 201810271711 A CN201810271711 A CN 201810271711A CN 108344486 B CN108344486 B CN 108344486B
- Authority
- CN
- China
- Prior art keywords
- tare weight
- infusion monitor
- charged state
- infusion
- zero point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/14—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated
- G01G23/16—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated electrically or magnetically operated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to the infusion test method and device on charged state automatic correcting measuring basis, device realizes whether the auto zero of tare weight, detection infusion monitor are in whether charged state, infusion monitor are in longitudinal suspension status by step once；It is identified as light condition when infusion monitor is in charging and longitudinal suspension, infusion monitor carries out the tare weight rezero operation of weighing sensor automatically.The present invention is directed to the infusion monitor by gravity sensor principle monitoring transfusion surplus, sensor tare weight zero migration value can be made timely to be zeroed amendment, the alarm accuracy being infused every time obtains basic guarantee, reduces artificial intervention operation, facilitates clinical quick use.
Description
Technical field
The present invention relates to the tare weight resetting methods and related device of infusion monitor.
Background technique
Hospital's ambulatory infusion supervisory system of closed is monitored by the gravity real-time change to infusion bag, infusion bottle, from
And the warning function of Residual liquid and drop speed is provided to current patient's transfusion condition for nurse, it can mitigate to the maximum extent
Nurse, which beats up and down, checks the cumbersome workload of transfusion condition, accomplishes precisely to nurse, and improves working efficiency.And how accurately to obtain
The real-time weight of infusion syrup is a ring of most critical in transfusion monitoring system, the accurate title of infusion monitor in this link
Weight function is the most key.
The principle of current weighing sensor weighing is the gravity ADC value and zero load tare weight ADC value (return-to-zero) of carry object
Difference, the real-time weight of current object is then obtained multiplied by the linear scale factor of weighing sensor.But weighing sensor
Because being influenced by the creep of stress, environment temperature, humidity, zero load tare weight ADC value can be generated with the accumulation of time
Difference is necessary so current unloaded tare weight is zeroed again before weighing.Existing weighing sensor tare weight zero
Method, substantially before each weighing, when weighing unloaded, confirmation carries out the movement of tare weight zero point zero by hand, then
The measurement of real-time weight can be just carried out with carry weight.
Have the disadvantage in that needs when value nurse is being infused using the infusion monitor that traditional weighing sensor tare weight is zeroed
Preceding craft key carries out the movement of tare weight zero, and the additional workload for increasing nurse, step becomes cumbersome, while nurse also has something lost
Forget to do the case where generation that tare weight zero point is zeroed, the influence of inaccuracy can be generated to the alarm of Residual liquid.If using title
Before retransmitting sensor, without the operating procedure of manual intervention zero, as the tare weight zero point of the accumulation sensor of time will
Deviate increasing, so that the alarm of infusion surplus can not be carried out accurately.
Summary of the invention
The technical problem to be solved in the present invention is that providing the infusion test method and practice of a kind of automatic calibration zero
The device of this method.
The technical solution adopted by the present invention to solve the technical problems is: the infusion on charged state automatic correcting measuring basis
Monitoring method, tare weight zero of this method for weighing sensor in infusion monitor, method includes the following contents:
Whether detection infusion monitor is in charged state；
Whether detection infusion monitor is in longitudinal suspension status；
Infusion monitor is identified as light condition when being in charging and longitudinal suspension, and the infusion monitor is claimed automatically
Retransmit the tare weight rezero operation of sensor.
The transfusion monitoring method on foregoing charged state automatic correcting measuring basis, the tare weight rezero operation packet
It includes,
The tare weight zero point sample value of weighing sensor, monitoring infusion when multi collect is in light condition in certain period of time
Device to the collected multiple sample values of institute carries out that new tare weight zero point sample average is calculated；
By new tare weight zero point sample average compared with old tare weight zero point sample value；
If the difference of the two is beyond the default error range allowed, then with new tare weight zero point sample average be weighing benchmark into
Row tare weight zero；
If the difference of the two is in the default error range allowed, then still with old tare weight zero point sample value be weighing benchmark into
Row tare weight zero.
The transfusion monitoring method on foregoing charged state automatic correcting measuring basis, new tare weight zero point sample average
The following steps are included: judging whether the fluctuation between multiple sample values collected is in preset normal range (NR) before calculating, sentence
Whether the difference between disconnected maximum sample value, smallest sample value is in preset normal range (NR)；
If judging result is preset normal range (NR) at aforementioned two, then reject maximum sample value, smallest sample value it
Mean value computation is carried out to remaining sample value afterwards.
The transfusion monitoring method on foregoing charged state automatic correcting measuring basis, the longitudinal direction of the infusion monitor
Suspension status including plumbness and with vertical direction formed 30 degree of inclinations angle including state.
The transfusion monitoring method on foregoing charged state automatic correcting measuring basis, infusion monitor fill its own
Electrical interface is monitored to learn charged state；Infusion monitor learns its own tilt angle by triaxial accelerometer sensor
To judge whether in longitudinal suspension status.
The transfusion detection device on charged state automatic correcting measuring basis, device include controlling and receiving and handling each submodule
The main control MCU of signal data handles chip, and the submodule includes charging module, angled state detection module, Weight acquisition biography
Feel module, wherein
The charging module charges for device, and is formed with charging status signal and feeds back to main control MCU processing chip；
The angled state detection module is used for acquisition device azimuth information, and generates orientation mode signal and feed back to master
It controls MCU and handles chip；
The main control MCU handles chip, and whether judgment means are in empty after receiving charging status signal, orientation mode signal
Load state；
The main control MCU handles chip, and whether judgment means are in empty after receiving charging status signal, orientation mode signal
Load state；
The Weight acquisition sensing module, the tare weight data of acquisition device when device is in light condition, and feed back to
Main control MCU handles chip to calibrate weighing measurement basis.
Implement technical solution of the present invention, at least with below the utility model has the advantages that completing using the idle state of charging defeated
Liquid monitor automatically updates tare weight zero point, eliminates and needs the artificial movement for forcing tare weight zero, improves work efficiency,
And it also can avoid medical-risk caused by human negligence.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is apparatus of the present invention pcb board embodiment schematic diagram；
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Weighing sensor is mainly made of sensing element, inverting element, measuring cell and four major part of accessory power supply,
In, sensing element is for directly experiencing the weight of testee and exporting other amounts relevant to its quality；Transformation member
Part is used to for the output quantity of sensing element to be transformed to certain easily to survey signal；The easy survey that measuring cell is used to export inverting element is believed
Number be converted to electric signal；Accessory power supply, which is used to export electric signal for measuring cell, provides energy source.
Weighing sensor principle is told about by taking resistance strain weighing transducer as an example.In resistance strain weighing transducer
In, sensing element is elastomer, and inverting element is capacitor, and measuring cell is bridge circuit, its working principle is that: firstly, by
Testee gravity influences elastomer and generates deformation；Secondly, elastomer deformation makes resistance strain gage, deformation occurs in turn by it
Be converted to the variation of resistance；Finally, the variation of resistance is converted to electric signal through bridge circuit, so far just complete object
Weight be changed into the process of electric signal.And sensing element is affected by environment in practice will appear difference.
A kind of existing infusion monitor is to be carried out by weighing sensor to infusion bag, infusion bottle being suspended over etc.
Real-time monitoring weight, precisely to be monitored to infusion process, to ensure that the accuracy of weighing sensor work can be by people
Work carries out tare weight zero to it.It has disadvantage: manual operation low efficiency and easily carelessness, and weighing sensor is originally experienced when using
Between, the influence of environment its return-to-zero will appear error, will lead to the accumulation of error in the case where human negligence, seriously affect title
The precision of weight.
In view of the drawbacks of the prior art, the application now proposes following scheme: charged state automatic correcting measuring basis it is defeated
Liquid monitoring method, method include the following contents:
Detection infusion monitor whether be in charged state, as infusion monitor to its own charging interface be monitored with
It knows whether charging；
Whether detection infusion monitor is in longitudinal suspension status, and longitudinal suspension status of infusion monitor is preferably vertical
State further includes the location status formed including 30 degree of inclinations angle with vertical direction, specifically, infusion monitor can pass through three axis
Accelerometer sensor learns its own tilt angle to judge whether in longitudinal suspension status；
Infusion monitor is identified as light condition when being in charging and longitudinal suspension, and the infusion monitor is claimed automatically
Retransmit the tare weight rezero operation of sensor.
The infusion monitor that this method charges mainly for existing unloaded and suspension status carries out using the category
Infusion monitor generally concentrates wireless charging mode using in nurse station, has shallow grooves that monitor is facilitated to paste at charging panel upper hook
Charging panel suspension, monitor can not hang infusion bag at this time, otherwise monitor will be lifted off charging panel influence charging flow,
It is exactly under regular operation, such infusion monitor must be in unloaded, longitudinal suspension status in charging.Therefore when inspection
Measuring infusion monitor is to be in charging and longitudinal suspension placement it is determined that currently empty load state, can carry out zero behaviour
Make, infusion monitor controls weighing sensor and carries out auto zero.
In tare weight rezero operation, infusion monitor passes through title within a certain period of time (such as in 10 seconds to 2,3 minutes)
The tare weight zero point sample value (tare weight ADC value when unloaded) when sensor multi collect is in light condition is retransmitted, to being collected
Multiple sample values carry out that new tare weight zero point sample average (tare weight ADC mean value when unloaded in certain period of time) is calculated；
By new tare weight zero point sample average compared with old tare weight zero point sample value；
If the difference of the two is beyond the default error range allowed, it is biggish to illustrate that current unloaded tare weight ADC value occurs
It changes, if not being updated to this numerical value, will affect subsequent weighing results and calculate, therefore infusion monitor is with new tare weight zero
Point sample average is that weighing benchmark carries out tare weight zero.The default error range allowed can be carried out according to existing medicine common sense
Control, such as when difference will lead to the infusion weight error that finally occurs and be greater than 1g or more, then it is assumed that tare weight zero point ADC value has more
New necessity.Further, if the difference of the two is super as default error range is excessive, for example, beyond value even result in 10g or
Above error, infusion monitor can be generated warning message and issue the so big change so that person on duty is handled in time at this time
Change may be not the normal effects due to factors such as weighing sensor itself creep under variable stress, environment temperatures, need to do outside
Disturb, the accidental situations such as faults itself are taken into account, need to be excluded if any unexpected disturbing factor person on duty so as to monitoring infusion
Device continues rezero operation, avoids occurring mistake instead according to new tare weight zero point sample average progress tare weight zero.
If the difference of the two is in the default error range allowed (error calculated such as eventually led to is within 1g),
Then weighing sensor is still that weighing benchmark carries out tare weight zero with old tare weight zero point sample value, can be to avoid tare weight zero point ADC value
It is frequent to update.
Preferably, further comprising the steps of before the calculating of new tare weight zero point sample average: to judge multiple samples collected
Whether the fluctuation between this value is in preset normal range (NR), judges whether is difference between maximum sample value, smallest sample value
In preset normal range (NR).Normal range (NR) at aforementioned two can be obtained according to common sense, for example, acquired in the case of zero load
Error result caused by sample value is within 1g, it is believed that is currently normal fluctuation, acquired sample value is reliable, such as remote
Far beyond the normal range (NR) having, such as the difference of 10g is reached, may indicate that weighing sensor receives external factor at this time
Interference or itself break down etc., can be generated at this time accordingly warning message sending, so that person on duty is clear in time
Manage failure.Judging result is normal range (NR) at such as aforementioned two, then to residue after rejecting maximum sample value, smallest sample value
Sample value carries out mean value computation.Thus obtained mean value can more reflect unloaded tare weight ADC value, it is ensured that infusion monitor it is accurate
Monitoring.
A kind of transfusion detection device on charged state automatic correcting measuring basis is provided according to aforementioned schemes, device includes control
System receives and handles the main control MCU processing chip of each submodule signal data, and the submodule includes handling chip with main control MCU
Charging module, angled state detection module, the Weight acquisition sensing module of connection.
Wherein, the charging module meets the charge requirement of device, and charged state handles chip monitoring by main control MCU；
The angled state detection module is used for acquisition device azimuth information, and generates orientation mode signal and feed back to main control MCU processing
Chip；The main control MCU handles chip, whether is in unloaded according to judgment means after charging status signal, orientation mode signal
State；The Weight acquisition sensing module, the tare weight data of acquisition device when device is in light condition, and feed back to master control
MCU handles chip to calibrate weighing measurement basis.
Specific pcb board 1 as shown in Fig. 1, main control MCU processing chip preferably use the bluetooth of model CC2540 wireless
Intelligent MCU is responsible for sending and receiving for blue-teeth data, responds the control command sended over by bluetooth, and control receives and locates
Manage signal, the data of each submodule.
Current charged state is supplied to master control CC2540, master control CC2540 by GPIO by the charging module of wireless mode
It can control charge status indicating light and show different colours to indicate current different charged state, and voltameter and master control
CC2540 reads the remaining electricity percentage of current lithium battery by I2C interface.Device (infusion monitor) passes through GPIO mouthfuls
(at wireless charging), which interrupts, detects that the I/O instruction state of charging IC is known into charged state, carries out and carries out tare weight zero point certainly
The initial work of dynamic zero sampling.
Accelerometer, by I2C interface, sends the weight component of the current X, Y, Z axis of infusion monitor with master control CC2540
Data, CC2540 is so as to calculating the location status of present infusion monitor.Specifically, detection mode mainly passes through PCB
Triaxial accelerometer sensor on plate 1 reads X, Y, the component of acceleration of gravity G when Z axis is static, to calculate X, Y, Z axis
The component of gravity G acceleration and ideal plumbness acceleration of gravity ratio, calculate the inclination of the X, Y, Z axis on pcb board
Angle, judges whether tilt angle carries out the sampling work of tare weight zero point in allowed limits, avoids charging panel installation excessively
When inclination causes transfusion monitor to hang over charging sampling tare weight zero point on charging panel, the tare weight zero point essence of gravity sensor is influenced
Degree.
Infusion monitor detects in charged state, and its be closely located to it is vertical after, begin through Weight acquisition sensing
Tare weight ADC value sampling operation when module (generally weighing sensor) carries out unloaded, data collected are cached to simultaneously
In memory.Weight acquisition sensing module incudes current stress variation in real time, by analog signal that current pressure is corresponding
Voltage passes to analog-to-digital conversion (chip CS1231 can be used), and modulus conversion chip CS1231 is converted into the voltage received
Adc data is feeding data back to master control CC2540 processing by SPI mouthfuls.
After acquiring sufficient amount of tare weight zero point sample value, judge whether stable between each sample value, whether fluctuation is compared
Smaller, maximal and minmal value difference is in the range of rational regulation.After tare weight zero point sample value fluctuates requirement up to specification, then go
Fall maximum and minimum value, calculates the average value of current tare weight zero point sample value.New tare weight zero point sample average is calculated with old skin
Difference between weight zero point updates the tare weight zero point value of transfusion monitor if difference reaches the error range for needing to update.
The application is directed to the infusion monitor by gravity sensor principle monitoring transfusion surplus, can make sensor skin
Zero migration value is timely zeroed amendment again, and the alarm accuracy being infused every time obtains basic guarantee, is reduced artificial dry
Pre-operation facilitates clinical quick use.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the present invention can have various changes, combination and variation.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should be included within scope of the presently claimed invention.
Claims (5)
1. the transfusion monitoring method on charged state automatic correcting measuring basis, this method is for weighing sensor in infusion monitor
Tare weight zero, which is characterized in that method includes the following contents:
Whether detection infusion monitor is in charged state；
Whether detection infusion monitor is in longitudinal suspension status；
Infusion monitor is identified as light condition when being in charging and longitudinal suspension, and the infusion monitor carries out weighing biography automatically
The tare weight rezero operation of sensor.
2. the transfusion monitoring method on charged state automatic correcting measuring basis as described in claim 1, it is characterised in that: described
Tare weight rezero operation includes,
The tare weight zero point sample value of weighing sensor, infusion monitor pair when multi collect is in light condition in certain period of time
The collected multiple sample values of institute carry out that new tare weight zero point sample average is calculated；
By new tare weight zero point sample average compared with old tare weight zero point sample value；
It is then that weighing benchmark carries out skin with new tare weight zero point sample average if the difference of the two is beyond the default error range allowed
Return zero；
If the difference of the two is in the default error range allowed, then skin is still carried out for weighing benchmark with old tare weight zero point sample value
Return zero.
3. the transfusion monitoring method on charged state automatic correcting measuring basis as claimed in claim 2, which is characterized in that new
It is further comprising the steps of before the calculating of tare weight zero point sample average: to judge whether the fluctuation between multiple sample values collected is located
In preset normal range (NR), judge whether the difference between maximum sample value, smallest sample value is in preset normal range (NR)；
Judging result is preset normal range (NR) at such as aforementioned two, then right after rejecting maximum sample value, smallest sample value
Remaining sample value carries out mean value computation.
4. the transfusion monitoring method on charged state automatic correcting measuring basis as described in claim 1, it is characterised in that: infusion
Monitor is monitored to learn charged state its own charging interface；Infusion monitor is obtained by triaxial accelerometer sensor
Its own tilt angle is known to judge whether in longitudinal suspension status.
5. the transfusion detection device on charged state automatic correcting measuring basis, it is characterised in that: device includes controlling and receiving and locating
Manage each submodule signal data main control MCU processing chip, the submodule include charging module, angled state detection module,
Weight acquisition sensing module, wherein
The charging module charges for device, and is formed with charging status signal and feeds back to main control MCU processing chip；
The angled state detection module is used for acquisition device azimuth information, and generates orientation mode signal and feed back to main control MCU
Handle chip；
The main control MCU handles chip, whether is in unloaded shape according to judgment means after charging status signal, orientation mode signal
State；
The Weight acquisition sensing module, the tare weight data of acquisition device when device is in light condition, and feed back to master control
MCU handles chip to calibrate weighing measurement basis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271711.0A CN108344486B (en) | 2018-03-29 | 2018-03-29 | The infusion test method and device on charged state automatic correcting measuring basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271711.0A CN108344486B (en) | 2018-03-29 | 2018-03-29 | The infusion test method and device on charged state automatic correcting measuring basis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108344486A CN108344486A (en) | 2018-07-31 |
| CN108344486B true CN108344486B (en) | 2019-10-11 |
Family
ID=62957392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271711.0A Active CN108344486B (en) | 2018-03-29 | 2018-03-29 | The infusion test method and device on charged state automatic correcting measuring basis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108344486B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368339B (en) * | 2020-03-10 | 2022-08-26 | 山东亚华电子股份有限公司 | Automatic zero calibration method and device for weighing type infusion alarm |
| CN113074801A (en) * | 2021-03-25 | 2021-07-06 | 梅特勒-托利多(常州)精密仪器有限公司 | Real-time monitoring device and method for weighing sensor of aerial work platform |
| CN115016334B (en) * | 2022-02-18 | 2024-08-20 | 浙江绍兴苏泊尔生活电器有限公司 | Method for starting zero-resetting calibration and household equipment |
| CN115219009A (en) * | 2022-09-05 | 2022-10-21 | 深圳市晨北科技有限公司 | Zero correction method and device for electronic scale |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201308688Y (en) * | 2009-04-23 | 2009-09-16 | 中国人民解放军济南军区联勤部药品仪器检验所 | Low power consumption unattended operation transfusion monitor |
| US9228886B2 (en) * | 2007-10-04 | 2016-01-05 | Metryx Limited | Semiconductor wafer weight metrology apparatus |
| CN206876280U (en) * | 2017-02-28 | 2018-01-12 | 东莞标帆塑胶五金制品有限公司 | A kitchen scale with tare weighing function |
| CN207101587U (en) * | 2017-01-24 | 2018-03-16 | 中国人民解放军第306医院 | A kind of intelligent transfusion warning device and system |
-
2018
- 2018-03-29 CN CN201810271711.0A patent/CN108344486B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9228886B2 (en) * | 2007-10-04 | 2016-01-05 | Metryx Limited | Semiconductor wafer weight metrology apparatus |
| CN201308688Y (en) * | 2009-04-23 | 2009-09-16 | 中国人民解放军济南军区联勤部药品仪器检验所 | Low power consumption unattended operation transfusion monitor |
| CN207101587U (en) * | 2017-01-24 | 2018-03-16 | 中国人民解放军第306医院 | A kind of intelligent transfusion warning device and system |
| CN206876280U (en) * | 2017-02-28 | 2018-01-12 | 东莞标帆塑胶五金制品有限公司 | A kitchen scale with tare weighing function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108344486A (en) | 2018-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108344486B (en) | The infusion test method and device on charged state automatic correcting measuring basis | |
| US9278014B2 (en) | Method for aligning a prosthesis | |
| CN201653608U (en) | High-intelligent resistance strain gage sensor | |
| CN108801427A (en) | The weighing device and its adjusting method of levelness automatic adjustment | |
| CN105973440A (en) | IoT-based weighing device used for industrial production | |
| CN201548315U (en) | Crane scale remote proofreading diagnostic detection device | |
| CN101187805B (en) | Storage battery intelligent detection and control device and method | |
| KR102587235B1 (en) | Apparatus and method for measuring residual fluid for correcting motion of fluid container | |
| CN107830972A (en) | Flexible force sensor caliberating test platform and method | |
| US8670951B2 (en) | Electronic scale having function of compensating for air pressure changes in glove box | |
| CN108744148B (en) | Monitoring method and device for automatic calibration weighing basis in no-load state | |
| CN212512878U (en) | Wall leveling device | |
| CN202033073U (en) | Semi-physical simulation platform for digital fuel oil measuring system | |
| CN119079367A (en) | Intelligent medicine cabinet, control method and storage medium | |
| CN117686178A (en) | A strain sensor fault diagnosis device and method for wind tunnel strain balance | |
| CN216319262U (en) | High-precision medical feeding weighing control module | |
| CN112577585A (en) | Weighing equipment, and state detection device and method of weighing sensor group | |
| CN211717573U (en) | Novel electronic balance | |
| CN211022717U (en) | Full-automatic urine meter | |
| CN213158488U (en) | Infusion tube clamping induction device for infusion alarm | |
| CN113368339B (en) | Automatic zero calibration method and device for weighing type infusion alarm | |
| CN111634801A (en) | Synchronous detection system and method for double-hook smelting crane hook | |
| CN109549628A (en) | Portable type measurement unit and degree of balance measurement method of parameters based on the device | |
| CN216309198U (en) | Food detects uses novel weighing device | |
| CN219935072U (en) | Portable liquid level meter calibration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |