CN108844664A - Measurement of bldy temperature circuit automatic calibrating method and device - Google Patents
Measurement of bldy temperature circuit automatic calibrating method and device Download PDFInfo
- Publication number
- CN108844664A CN108844664A CN201810948583.9A CN201810948583A CN108844664A CN 108844664 A CN108844664 A CN 108844664A CN 201810948583 A CN201810948583 A CN 201810948583A CN 108844664 A CN108844664 A CN 108844664A
- Authority
- CN
- China
- Prior art keywords
- measurement
- resistance
- voltage
- calibrator
- ter
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
Abstract
The present invention relates to field of medical technology, more particularly to a kind of measurement of bldy temperature circuit automatic calibrating method and device, the measurement of bldy temperature circuit includes probe for detecting temperature, first resistor and second resistance, which connects and in parallel with second resistance with first resistor, and this method includes：Probe for detecting temperature is simulated using calibrator (-ter) unit, and pass through communication interface and measurement of bldy temperature circuit communication, and then it controls calibrator (-ter) unit and exports a variety of different size of resistance values, and measurement of bldy temperature circuit is sent to by communication interface, at this time, the voltage of calibrator (-ter) unit two sides is measured, and calculates separately out first resistor value and second resistance value according to a variety of different size of resistance values and voltage, to be calibrated to the resistance in measurement of bldy temperature circuit.
Description
Technical field
The present invention relates to field of medical technology, in particular to a kind of measurement of bldy temperature circuit automatic calibrating method and dress
It sets.
Background technique
The instrument of big measurement body temperature used at present, such as thermometer, clinical thermometer, inside be both provided with measurement of bldy temperature
Circuit includes probe for detecting temperature and multiple resistance in the measurement of bldy temperature circuit, which is generally thermistor, is used for basis
Different resistance is presented in human body different temperatures, and comes out the temperature display of human body after calculating.But it is dispatching from the factory
When, the resistance value for the multiple resistance for including in the measurement of bldy temperature circuit can only determine general range, can not exact knowledge
The specific resistance value size of each resistance, and the resistance value of multiple resistance determines usually there are error, usually 5% or 1%,
The resistance of higher precision can accomplish one thousandth error or smaller, but price is more expensive, that is to say, that even with one thousandth
The resistance of error still remains biggish error, therefore, if directly calculating the electricity of probe for detecting temperature according to the resistance value obtained roughly
Resistance value, will lead to calculate it is not accurate so that it is inaccurate finally to measure obtained human body temperature.Therefore it provides a kind of measurement of bldy temperature
Circuit automatic calibrating method, it is very necessary for carrying out calibration to the resistance value of the resistance in measurement of bldy temperature circuit.
Summary of the invention
The purpose of the present invention is to provide a kind of measurement of bldy temperature circuit automatic calibrating methods, to realize to measurement of bldy temperature circuit
The resistance value of middle resistance is determined, so that temperature measurement is accurate.
Another object of the present invention is to provide a kind of measurement of bldy temperature circuit self-checking devices, to realize to measurement of bldy temperature
The resistance value of resistance is determined in circuit, so that temperature measurement is accurate.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows：
In a first aspect, the embodiment of the invention provides a kind of measurement of bldy temperature circuit automatic calibrating method, the measurement of bldy temperature
Circuit includes probe for detecting temperature, first resistor and second resistance, the probe for detecting temperature connect with first resistor and with second resistance simultaneously
Connection, the method includes：The probe for detecting temperature is simulated using calibrator (-ter) unit, and passes through communication interface and the measurement of bldy temperature circuit
Communication；It controls the calibrator (-ter) unit and exports a variety of different size of resistance values, and the body is sent to by the communication interface
Temperature measurement circuit；Measure the voltage of the calibrator (-ter) unit two sides；Distinguish according to a variety of different size of resistance values and voltage
Calculate the first resistor value of the first resistor and the second resistance value of second resistance.
Second aspect, the embodiment of the invention also provides a kind of measurement of bldy temperature circuit self-checking device, the body temperature is surveyed
Measuring circuit includes probe for detecting temperature, first resistor and second resistance, and the probe for detecting temperature is connected with first resistor and and second resistance
Parallel connection, described device include：Analog module, for simulating the probe for detecting temperature using calibrator (-ter) unit, and by communication interface with
The measurement of bldy temperature circuit communication；Control module exports a variety of different size of resistance values for controlling the calibrator (-ter) unit, and
The measurement of bldy temperature circuit is sent to by the communication interface；Measurement module, for measuring the electricity of the calibrator (-ter) unit two sides
Pressure；Computing module, for calculating separately out the of the first resistor according to a variety of different size of resistance values and voltage
The second resistance value of one resistance value and second resistance.
A kind of measurement of bldy temperature circuit automatic calibrating method and device provided in an embodiment of the present invention, the measurement of bldy temperature circuit packet
Probe for detecting temperature, first resistor and second resistance are included, which connects with first resistor and, this method in parallel with second resistance
Including：Probe for detecting temperature is simulated using calibrator (-ter) unit, and by communication interface and measurement of bldy temperature circuit communication, and then controls calibration and set
It is standby to export a variety of different size of resistance values, and measurement of bldy temperature circuit is sent to by communication interface, at this point, measurement calibrator (-ter) unit
The voltage of two sides, and first resistor value and second resistance value are calculated separately out according to a variety of different size of resistance values and voltage,
To be calibrated to the resistance in measurement of bldy temperature circuit.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of flow diagram of measurement of bldy temperature circuit automatic calibrating method provided in an embodiment of the present invention.
Fig. 2 shows a kind of structural schematic diagrams of measurement of bldy temperature circuit provided in an embodiment of the present invention.
Fig. 3 shows the structural schematic diagram of another measurement of bldy temperature circuit provided in an embodiment of the present invention.
Fig. 4 shows a kind of functional module signal of measurement of bldy temperature circuit self-checking device provided in an embodiment of the present invention
Figure.
Diagram：100- measurement of bldy temperature circuit self-checking device；110- analog module；120- control module；130- measurement
Module；140- computing module；150- determining module.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Fig. 1 is please referred to, is a kind of process signal of measurement of bldy temperature circuit automatic calibrating method provided in an embodiment of the present invention
Figure, this method include：
Step S110 simulates the probe for detecting temperature using calibrator (-ter) unit, and passes through communication interface and measurement of bldy temperature electricity
Road communication.
It referring to figure 2., is a kind of structural schematic diagram of measurement of bldy temperature circuit provided in an embodiment of the present invention, the measurement of bldy temperature
For circuit for calibrating to first resistor, the R1 in the measurement of bldy temperature circuit is first resistor, which is probe for detecting temperature, the V1
For the voltage of probe for detecting temperature two sides, which is the voltage of the two sides R1, wherein the first resistor and probe for detecting temperature series connection.It please refers to
Fig. 3, is the structural schematic diagram of another measurement of bldy temperature circuit provided in an embodiment of the present invention, which is used for the
Two resistance are calibrated, and the R2 in the measurement of bldy temperature circuit is second resistance, i other words, two electricity on the right side of probe for detecting temperature R
Resistance is equivalent to a second resistance, and the probe for detecting temperature and second resistance are in parallel, which is the voltage after parallel connection.
It should be noted that only include a measurement of bldy temperature circuit in a clinical thermometer or body temperature instrument, the two electricity
Road figure is respectively two kinds of different shapes of measurement of bldy temperature circuit.It is opened i other words being provided with a simulation on the measurement of bldy temperature circuit
It closes, when controlling analog switch closing, then state shown in Fig. 2 is presented in measurement of bldy temperature circuit, i.e. R2 is not connected into circuit
In, first resistor is calibrated at this time；When controlling analog switch opening, then measurement of bldy temperature circuit presents as shown in Figure 3
State, i.e. R2 connects in circuit, calibrates at this time to second resistance.
In turn, probe for detecting temperature R is simulated using calibrator (-ter) unit, which is resistance box, passes through communication interface and body
Temperature measurement circuit communication.The calibrator (-ter) unit can switch the resistance value for exporting a variety of known dimensions, and be sent by communication interface
Into measurement of bldy temperature circuit, in other words, the resistance value of probe for detecting temperature R can pass through calibrator (-ter) unit in the measurement of bldy temperature circuit
It is simulated, to regard resistance sizes as it is known that facilitate the specific resistance value for accurately calculating first resistor and second resistance.
Step S120 controls the calibrator (-ter) unit and exports a variety of different size of resistance values, and sent out by the communication interface
It send to the measurement of bldy temperature circuit.
Specifically, the calibrator (-ter) unit is adjusted to export a variety of different size of resistance values in user, and is sent out by communication interface
It send to measurement of bldy temperature circuit.
Step S130 measures the voltage of the calibrator (-ter) unit two sides.
Specifically, firstly, the analog switch that control is set on measurement of bldy temperature circuit, which closes measurement, obtains the calibrator (-ter) unit
The first voltage of two sides, state as shown in Figure 2 is presented in measurement of bldy temperature circuit at this time, if the resistance of calibrator (-ter) unit setting at this time
Value is respectively Ra and Rb, then the corresponding voltage measured in the calibrator (-ter) unit two sides is respectively V1a and V1b.
Secondly, the analog switch that is set on measurement of bldy temperature circuit of control, which opens measurement, obtains the of the calibrator (-ter) unit two sides
Two voltages, state as shown in Figure 3 is presented in measurement of bldy temperature circuit at this time, if the resistance value of calibrator (-ter) unit setting at this time is respectively
Ra and Rb, then the corresponding voltage measured in the calibrator (-ter) unit two sides is respectively V2a and V2b.
Step S140, according to a variety of different size of resistance values and voltage calculate separately out the first resistor value and
Second resistance value.
Specifically, measurement obtains the resistance value difference of the calibrator (-ter) unit at this time when the measurement of bldy temperature circuit is as shown in Figure 2
For Ra and Rb, and the corresponding voltage measured in the calibrator (-ter) unit two sides is respectively V1a and V1b, can accurately calculate the first electricity at this time
The resistance value of R1 is hindered, to calibrate to first resistor.Its calculation is：
V1a=Ra/ (Ra+R1) * VDD
V1b=Rb/ (Rb+R1) * VDD
In turn, the first resistor value of first resistor R1 can be obtained, by the solution to equation to realize to first resistor
Accurate calibration.
When the measurement of bldy temperature circuit is as shown in Figure 3, it is Ra that measurement, which obtains the resistance value of the calibrator (-ter) unit at this time,
And Rb, and the corresponding voltage measured in the calibrator (-ter) unit two sides is respectively V2a and V2b, can accurately calculate second resistance R2 at this time
Resistance value, to be calibrated to second resistance.Its calculation is：
It is obtained after R is in parallel with R2：R simultaneously=R*R2/ (R+R2)
V2=R simultaneously/(R2+R is simultaneously) * VDD
To sum up two formula are eliminated R and are obtained：
V2=R*R2/ (R+R2)/(R2+R*R2/ (R+R2)) * VDD
In turn, two the resistance values Ra and Rb of R are brought to the second resistance value that second resistance R2 can be calculated into, with reality
Now to the accurate calibration of second resistance R2.
Step S150 determines the resistance value of the probe for detecting temperature according to calculated first resistor value and second resistance value.
Specifically, due to the precise resistance value for defining first resistor and second resistance by actual operation, therefore can root
The precise resistance value of probe for detecting temperature R is calculated according to formula.After the resistance value of the probe for detecting temperature determines, this can be accurately determined
The human body temperature that measurement of bldy temperature circuit measuring goes out, avoids measurement error.
It can be seen that a kind of measurement of bldy temperature circuit automatic calibrating method provided in an embodiment of the present invention, by being surveyed to body temperature
Resistance in amount circuit is calibrated when leaving the factory, accurately to determine the resistance value of probe for detecting temperature, since the probe for detecting temperature is more
For thermistor, therefore after determining the resistance value of the probe for detecting temperature, the thermometer where measurement of bldy temperature circuit can be accurately determined
The human body problem of device measurement, avoids error.
It referring to figure 4., is a kind of function mould of measurement of bldy temperature circuit self-checking device 100 provided in an embodiment of the present invention
Block schematic diagram, the device include analog module 110, control module 120, measurement module 130, computing module 140 and determine mould
Block 150.
Analog module 110 for simulating the probe for detecting temperature using calibrator (-ter) unit, and passes through communication interface and the body temperature
Measuring circuit communication.
In embodiments of the present invention, step S110 can be executed by analog module 110.
Control module 120 exports a variety of different size of resistance values for controlling the calibrator (-ter) unit, and by described logical
Letter interface is sent to the measurement of bldy temperature circuit.
In embodiments of the present invention, step S120 can be executed by control module 120.
Measurement module 130, for measuring the voltage of the calibrator (-ter) unit two sides.
In embodiments of the present invention, step S130 can be executed by measurement module 130.
Computing module 140, for calculating separately out described first according to a variety of different size of resistance values and voltage
The first resistor value of resistance and the second resistance value of second resistance.
In embodiments of the present invention, step S140 can be executed by computing module 140.
Determining module 150, for determining the probe for detecting temperature according to the first resistor value and second resistance value that are calculated
Resistance value.
In embodiments of the present invention, step S150 can be executed by determining module 150.
Due to having been described in measurement of bldy temperature circuit automatic calibrating method part, details are not described herein.
In conclusion a kind of measurement of bldy temperature circuit automatic calibrating method provided in an embodiment of the present invention and device, the body temperature
Measuring circuit includes probe for detecting temperature, first resistor and second resistance, which connects with first resistor and and second resistance
Parallel connection, this method include：Probe for detecting temperature is simulated using calibrator (-ter) unit, and passes through communication interface and measurement of bldy temperature circuit communication, into
And control calibrator (-ter) unit and export a variety of different size of resistance values, and measurement of bldy temperature circuit is sent to by communication interface, at this point,
Measure calibrator (-ter) unit two sides voltage, and according to a variety of different size of resistance values and voltage calculate separately out first resistor value and
Second resistance value, to be calibrated to the resistance in measurement of bldy temperature circuit.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
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 invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Claims (10)
1. a kind of measurement of bldy temperature circuit automatic calibrating method, which is characterized in that the measurement of bldy temperature circuit includes probe for detecting temperature,
One resistance and second resistance, the probe for detecting temperature are connected and in parallel with second resistance with first resistor, the method includes：
The probe for detecting temperature is simulated using calibrator (-ter) unit, and passes through communication interface and the measurement of bldy temperature circuit communication；
It controls the calibrator (-ter) unit and exports a variety of different size of resistance values, and the body temperature is sent to by the communication interface
Measuring circuit；
Measure the voltage of the calibrator (-ter) unit two sides；
The first resistor value and of the first resistor is calculated separately out according to a variety of different size of resistance values and voltage
The second resistance value of two resistance.
2. the method as described in claim 1, which is characterized in that the step of voltage of the measurement calibrator (-ter) unit two sides wraps
It includes：
It controls the analog switch closing measurement being set on the measurement of bldy temperature circuit and obtains the voltage of the calibrator (-ter) unit two sides
For first voltage；
Controlling the voltage that the analog switch opening measurement being set on the measurement of bldy temperature circuit obtains on the calibrator (-ter) unit is
Second voltage.
3. method according to claim 2, which is characterized in that described according to a variety of different size of resistance values and voltage
Calculate separately out the first resistor first resistor value and second resistance second resistance value the step of include：
First resistor value is calculated according to a variety of different size of resistance values and first voltage；
Second resistance value is calculated according to a variety of different size of resistance values and second voltage.
4. the method as described in claim 1, which is characterized in that the method also includes：
The resistance value of the probe for detecting temperature is determined according to the first resistor value and second resistance value being calculated.
5. the method as described in claim 1, which is characterized in that the calibrator (-ter) unit is resistance box.
6. a kind of measurement of bldy temperature circuit self-checking device, which is characterized in that the measurement of bldy temperature circuit includes probe for detecting temperature,
One resistance and second resistance, the probe for detecting temperature are connected and in parallel with second resistance with first resistor, and described device includes：
Analog module for simulating the probe for detecting temperature using calibrator (-ter) unit, and passes through communication interface and measurement of bldy temperature electricity
Road communication；
Control module exports a variety of different size of resistance values for controlling the calibrator (-ter) unit, and passes through the communication interface
It is sent to the measurement of bldy temperature circuit；
Measurement module, for measuring the voltage of the calibrator (-ter) unit two sides；
Computing module, for calculating separately out the of the first resistor according to a variety of different size of resistance values and voltage
The second resistance value of one resistance value and second resistance.
7. device as claimed in claim 6, which is characterized in that the measurement module is specifically used for：
It controls the analog switch closing measurement being set on the measurement of bldy temperature circuit and obtains the voltage of the calibrator (-ter) unit two sides
For first voltage；
Controlling the voltage that the analog switch opening measurement being set on the measurement of bldy temperature circuit obtains on the calibrator (-ter) unit is
Second voltage.
8. device as claimed in claim 7, which is characterized in that the computing module is specifically used for：According to a variety of differences
The resistance value and first voltage of size calculate first resistor value；
Second resistance value is calculated according to a variety of different size of resistance values and second voltage.
9. device as claimed in claim 6, which is characterized in that described device further includes：
Determining module, for determining the resistance of the probe for detecting temperature according to the first resistor value and second resistance value that are calculated
Value.
10. device as claimed in claim 6, which is characterized in that the calibrator (-ter) unit is resistance box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948583.9A CN108844664B (en) | 2018-08-20 | 2018-08-20 | Automatic calibration method and device for body temperature measurement circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810948583.9A CN108844664B (en) | 2018-08-20 | 2018-08-20 | Automatic calibration method and device for body temperature measurement circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844664A true CN108844664A (en) | 2018-11-20 |
| CN108844664B CN108844664B (en) | 2020-11-24 |
Family
ID=64189081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810948583.9A Active CN108844664B (en) | 2018-08-20 | 2018-08-20 | Automatic calibration method and device for body temperature measurement circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844664B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075551A (en) * | 1992-02-21 | 1993-08-25 | Abb动力T&D公司 | The method and apparatus of measuring voltage |
| CN101696991A (en) * | 2009-10-14 | 2010-04-21 | 苏州阿特斯阳光电力科技有限公司 | Method and device for detecting contact resistance of probe |
| CN102707146A (en) * | 2012-06-05 | 2012-10-03 | 江南大学 | Experimental apparatus for determining resistance of resistor |
| CN203259263U (en) * | 2013-04-18 | 2013-10-30 | 海尔集团公司 | Temperature detection device with compensation |
| CN104198091A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Intelligent platinum resistor temperature measuring calibration instrument and calibration method thereof |
| CN106771822A (en) * | 2017-01-13 | 2017-05-31 | 北京航天自动控制研究所 | A kind of modified carrier rocket electrical system leakage testses result computational methods |
| CN107590342A (en) * | 2017-09-19 | 2018-01-16 | 无锡中微亿芯有限公司 | A kind of impedance calibration circuit of area-saving design |
| CN108303589A (en) * | 2017-01-13 | 2018-07-20 | 旺玖科技股份有限公司 | Measuring circuit and method for internal resistance of battery |
-
2018
- 2018-08-20 CN CN201810948583.9A patent/CN108844664B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075551A (en) * | 1992-02-21 | 1993-08-25 | Abb动力T&D公司 | The method and apparatus of measuring voltage |
| CN101696991A (en) * | 2009-10-14 | 2010-04-21 | 苏州阿特斯阳光电力科技有限公司 | Method and device for detecting contact resistance of probe |
| CN102707146A (en) * | 2012-06-05 | 2012-10-03 | 江南大学 | Experimental apparatus for determining resistance of resistor |
| CN203259263U (en) * | 2013-04-18 | 2013-10-30 | 海尔集团公司 | Temperature detection device with compensation |
| CN104198091A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Intelligent platinum resistor temperature measuring calibration instrument and calibration method thereof |
| CN106771822A (en) * | 2017-01-13 | 2017-05-31 | 北京航天自动控制研究所 | A kind of modified carrier rocket electrical system leakage testses result computational methods |
| CN108303589A (en) * | 2017-01-13 | 2018-07-20 | 旺玖科技股份有限公司 | Measuring circuit and method for internal resistance of battery |
| CN107590342A (en) * | 2017-09-19 | 2018-01-16 | 无锡中微亿芯有限公司 | A kind of impedance calibration circuit of area-saving design |
Non-Patent Citations (1)
| Title |
|---|
| 刘杨 等: "《生物医学检测技术》", 30 September 2014, 同济大学出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108844664B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7642788B2 (en) | Voltage measurement instrument and method having improved automatic mode operation | |
| US7088108B2 (en) | Method for detecting an offset drift in a wheatstone measuring bridge | |
| CN110296773B (en) | Method for calibrating short-branch temperature measuring equipment by using dry body temperature calibrator | |
| JP2010511894A (en) | Detection of temperature sensor configuration in a process variable transmitter | |
| CN109142876A (en) | Resistance measuring circuit and resistivity-measuring devices | |
| EP3032230A2 (en) | Flow meter and a method of calibration | |
| CN104970776B (en) | A kind of body temperature detection method and a kind of Dynamic High-accuracy calibration electric body-temperature counter device | |
| CN106199166A (en) | A kind of method and device of current measurement | |
| CN106289563A (en) | Temperature checking method, system and device | |
| US10359321B2 (en) | On-chip circuit and method for accurately measuring die temperature of an integrated circuit | |
| CN103604525A (en) | Thermal resistor temperature measuring instrument based on verification data | |
| CN107132417B (en) | A kind of precision resister measurement method of reactive circuit parameter drift | |
| CN103411699B (en) | A kind of high precision measuring temperature instrument | |
| CN106092375A (en) | The method of calibration of airborne equipment surface temperature sensor and tester | |
| CN108844664A (en) | Measurement of bldy temperature circuit automatic calibrating method and device | |
| CN208598395U (en) | A kind of bio-impedance analog meter | |
| CN114111873B (en) | Online calibration system and method for refrigerator detector | |
| KR20190001506A (en) | Electronic Flow Meter and The Measurement Error Correcting Methode | |
| US2886776A (en) | Multiple testing meter | |
| US5485100A (en) | Automatically balanced and tested bridge measurement circuit, and method | |
| CN108195481B (en) | Strain fermentation temperature measuring device with self-diagnosis function and strain fermentation temperature measuring method | |
| GB2256051A (en) | Temperature measuring apparatus. | |
| Rietveld et al. | Accurate high-ohmic resistance measurement techniques up to 1 PΩ | |
| CN216013480U (en) | Voltage measurement chip and voltage measurement circuit | |
| CN1041235C (en) | Unbalance/balance electric bridge temperature measuring method and its 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 |