CN108613756A - A kind of method of temperature classes test mass control - Google Patents
A kind of method of temperature classes test mass control Download PDFInfo
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- CN108613756A CN108613756A CN201810306480.2A CN201810306480A CN108613756A CN 108613756 A CN108613756 A CN 108613756A CN 201810306480 A CN201810306480 A CN 201810306480A CN 108613756 A CN108613756 A CN 108613756A
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- 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
- G01K15/007—Testing
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Abstract
The invention discloses a kind of methods of temperature classes test mass control, are related to Quality Control Technology field, specifically include following steps：Test specimen is first placed in the inside of chamber for the component of measuring temperature；Chamber test is opened, chamber measures the temperature that test specimen is used for the component of measuring temperature according to previously selected temperature measurement method, after completing test, the operating temperature of record test completion；It repeatedly tests, seeks the average value of operating temperatureRecord start time, end time and initial temperature；Test carries out data processing after completing, and E is calculated using formulanNumerical value；If EnNumerical value be satisfaction in (1,1) interval range；Otherwise it is unsatisfied with.Therefore when guide for method temperature classes experiment using the present invention, it can be ensured that equipment, personnel and method etc. keep good confidence level, also ensure that accurate, the reliable and validity of temperature classes testing inspection result, and at low cost, easy to operate.
Description
Technical field
The present invention relates to a kind of methods that Quality Control Technology field more particularly to temperature classes test mass control.
Background technology
Currently, temperature classes test no preferable Quality Control control mode, leads to testing equipment, personnel, method etc., can not
Good confidence level is remain, accurate, the reliable and validity of temperature classes testing inspection result are also just unable to ensure.
For example, the characteristic of thermal resistance (such as PT100) is that resistance value changes with the change of temperature.Using temperature test box
The mode of detection thermal resistance includes low temperature detection and high temperature detection, when low temperature detects, a designated value is first set, as resistance value is
92.16 when Ω, corresponding temperature should be -20 DEG C.When the actually measured temperature of temperature test box is less than or equal to designated value (- 20 DEG C)
When, the indicator light on temperature test box is bright；When high temperature detects, a designated value is first set, it is corresponding when such as resistance value being 123.24 Ω
Temperature should be 60 DEG C.When the actually measured temperature of temperature test box is more than or equal to designated value (60 DEG C), on temperature test box
Indicator light is bright.This temperature test box is equivalent to a flight data recorder, only sponsor or sponsors laboratory and knows designated value, participates in ratio
To laboratory be not aware that this value, can only be obtained by temperature test box an indicator light it is bright when operating temperature value, cause
The control of temperature test box test mass can not ensure.
Invention content
Against the above deficiency, the object of the present invention is to provide a kind of method of temperature classes test mass control, this method can
Ensure accuracy, the reliability of temperature classes testing inspection result, and at low cost, easy to operate.
In order to solve the above technical problems, the technical scheme is that：
A kind of method of temperature classes test mass control, includes the following steps：
S1, the chamber with measuring temperature function is selected, test specimen is arranged in the outside of the chamber, experiment
Sample is placed in the inside of the chamber for the component of measuring temperature；
S2, the chamber is opened, the chamber measures the test sample according to previously selected temperature measurement method
Temperature of the product for the component of measuring temperature；After completing primary test, record tests the operating temperature completed；Repeatable test,
Seek the average value X for the operating temperature repeatedly testedT；
S3, before opening the chamber, record initial time, end time and the initial temperature of test；
S4, data processing, utilize formulaCalculate E nNumerical value；
U in formulaTFor expanded uncertainty, the expanded uncertaintyIt can be according to the operating temperature meter of test
It obtains, or is obtained according to previously selected confidence level；
S5, test result is judged, if E nNumerical value in (- 1, -1) interval range, result be satisfaction；Otherwise it is unsatisfied with.
Preferred embodiment is that the length that the test specimen stretches into the chamber for the component of measuring temperature is more than
200mm。
Preferred embodiment is, in the step S4, when previously selected confidence level is 95.45%, and K 2.
Preferred embodiment is, in the step S4, the expanded uncertainty UTCalculation formula be：
Preferred embodiment is that the test specimen is temperature test box, and the temperature test box is used for the component of measuring temperature
For temperature-sensing probe.
Preferred embodiment is that the temperature test box has high temperature, low temperature, temperature cycles, temperature shock and/or fast temperature
Measurement function.
Preferred embodiment is that the temperature test box is for when measuring low temperature, the step S2 to be specially：Circuit is connected to open
The chamber, cools down since room temperature, observes the state of the indicator light of the chamber, complete until indicator light extinguishing
At primary test, the operating temperature that the indicator light extinguishes moment is recorded after testing,
Preferred embodiment is that in the step S4, the data area of acquisition is
Preferred embodiment is, the chamber is equipped with temperature display unit, and the operating temperature is from the temperature display
Component is read.
After adopting the above technical scheme, the beneficial effects of the invention are as follows：
Due to the method for the temperature classes test mass control of the present invention, include the following steps：First selecting has measuring temperature
Test specimen, is located at the outside of chamber by the chamber of function, and component of the test specimen for measuring temperature is placed in chamber
Inside；It is then turned on chamber, chamber measures test specimen for measuring temperature according to previously selected temperature measurement method
The temperature of the component of degree, after completing primary test, record tests the operating temperature completed；Repeatable test, acquires multiple test
Operating temperature average valueBefore test, initial time, end time and the initial temperature of test are recorded；It tests
Data processing is carried out at the rear data to acquisition, mainly calculates E using formula nNumerical value；If E nNumerical value (- 1 ,-
1) in interval range, result is satisfaction；Otherwise it is unsatisfied with.As it can be seen that by the method for the present invention for instructing temperature classes test mass
When control, it can be ensured that equipment, personnel and method etc. remain good confidence level, also ensure temperature classes testing inspection result
Accurate, reliable and validity, and the method for the present invention have the advantages that it is at low cost, easy to operate.
Since test specimen stretches into the length of chamber more than 200mm for the component of measuring temperature；Ensure test sample
Product can be placed in the temperature sensing area of chamber for the component of measuring temperature, make measurement result more accuracy, reliable
Property.
Since chamber is equipped with temperature display unit, make operating temperature that can directly be read from temperature display component,
Further simplify operation.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, following embodiment carries out the present invention
It is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit
The present invention.
A kind of method of temperature classes test mass control, includes the following steps：
S1, the chamber with temperature measurement function is first selected, test specimen is arranged in the outside of chamber, will be tested
Sample is placed in the inside of chamber for the component of measuring temperature；Test specimen is stretched for the component of measuring temperature in the present embodiment
The length for entering chamber is more than 200mm, and this ensures that, the components that test specimen is used for measuring temperature, can be placed in chamber
Temperature measurement area in, further ensure temperature measurement accuracy, reliability.
S2, chamber is opened, chamber measures test specimen for measuring temperature according to previously selected temperature measurement method
The temperature of the component of degree；After completing primary test, record tests the operating temperature completed；Retest is sought repeatedly testing
The average value of operating temperatureWhereinOperating temperature average value is measured to be practical；
Before S3, test, initial time, end time and the initial temperature of chamber of experiment are recorded；
S4, data processing, utilize formulaCalculate E nValue；
In formula：
It is the designated value (i.e. pre-set operating temperature value) of the operating temperature of test specimen.
U PIt is the expanded uncertainty (being obtained by sponsor's measurement) of operating temperature designated value.
It is the practical measurement operating temperature value in laboratory for participating in comparing.
U TIt is the expanded uncertainty for the laboratory measurement operating temperature value for participating in comparing；Expanded uncertaintyIt can root
It is calculated according to the operating temperature of test, or is obtained according to previously selected confidence level；Confidence level in this example is
When 95.45%, k=2.
Calculate U TFormula be：WhereinRefer to sample value,It refer to practical measurement action temperature
The average value of degree, n are the number of retest in step S2.
S5, test result is judged, if E nNumerical value in (- 1, -1) interval range, that is, -1≤EnResult is when≤1
It is satisfied；Otherwise it is unsatisfied with.
In the present embodiment, test specimen is temperature test box, and component of the temperature test box for measuring temperature is visited for temperature-sensitive
Head.Certainly unlimited above-mentioned cited temperature test box, as long as test specimen has high temperature, low temperature, temperature cycles, temperature shock
And/or the measurement function of fast temperature, the method for the present invention can be used to instruct temperature to measure experiment.
Below by taking the low-temperature test of temperature test box as an example, it is described：
This test specimen is that temperature test box is forbidden disassembling test specimen during the test；
Temperature test box is placed on to the outside of chamber, its temperature-sensing probe is put into the inside of chamber, and is entered
The length of chamber should be greater than 200mm；
Circuit is connected, chamber is opened；Cool down since room temperature, observe the LED status in chamber, until instruction
Lamp extinguishes, and completes primary test；And before test, it records the starting and ending time of experiment, record rising in chamber
Beginning temperature and indicator light extinguish the operating temperature X of momentT.The repeatable test of this example is multiple, takes the average value of operating temperatureThe expanded uncertainty U of this result is calculated in the manner described above T。
The data result finally provided isAnd UTRetain to 2 significant digits.
E is calculated according to above-mentioned formula n, and judging result, as -1≤EnResult is satisfaction when≤1；Otherwise it is unsatisfied with.
In addition in the present embodiment, chamber is equipped with temperature display unit, and operating temperature is read from temperature display component,
Further simplify operation.Temperature display unit can be display screen, charactron etc..
In conclusion the method for the temperature classes test mass control of the present invention, solves existing middle temperature classes test mass
The technical issues of control mode be not suitble to, preferable, and the method for the present invention is easy to operate, it is at low cost, for instructing temperature
When spending the control of class test mass, it is ensured that equipment, personnel and method etc. remain good confidence level, also ensure that temperature classes are tried
Test accurate, the reliable and validity of testing result.
The preferred embodiment of present invention described above, is not intended to limit the invention, it is all the present invention spirit and
Any modification made by within principle, etc. the method structure of same temperature classes test mass control improvement etc., should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of method of temperature classes test mass control, which is characterized in that include the following steps：
S1, the chamber with measuring temperature function is selected, test specimen is arranged in the outside of the chamber, test specimen
Component for measuring temperature is placed in the inside of the chamber；
S2, the chamber is opened, the chamber measures the test specimen and use according to previously selected temperature measurement method
In the temperature of the component of measuring temperature；After completing primary test, record tests the operating temperature completed；Repeatable test, seeks
The average value for the operating temperature repeatedly tested
S3, before opening the chamber, record initial time, end time and the initial temperature of test；
S4, data processing, utilize formulaCalculate EnNumerical value；
U in formulaTFor expanded uncertainty, the expanded uncertaintyIt can be calculated according to the operating temperature of test
Go out, or is obtained according to previously selected confidence level；
S5, test result is judged, if EnNumerical value in (- 1, -1) interval range, result be satisfaction；Otherwise it is unsatisfied with.
2. the method for temperature classes test mass control according to claim 1, which is characterized in that the test specimen is used for
The length that the component of measuring temperature stretches into the chamber is more than 200mm.
3. the method for temperature classes test mass control according to claim 1, which is characterized in that in the step S4, in advance
When first selected confidence level is 95.45%, K 2.
4. the method for temperature classes test mass control according to claim 1, which is characterized in that in the step S4, institute
State expanded uncertainty UTCalculation formula be：
5. the method for temperature classes test mass control according to any one of claims 1 to 4, which is characterized in that the examination
It is temperature test box to test sample, and the temperature test box is temperature-sensing probe for the component of measuring temperature.
6. the method for temperature classes test mass control according to claim 5, which is characterized in that the temperature test box tool
There is the measurement function of high temperature, low temperature, temperature cycles, temperature shock and/or fast temperature.
7. the method for temperature classes test mass control according to claim 6, which is characterized in that the temperature test box is used
When measuring low temperature, the step S2 is specially：It connects circuit and opens the chamber, cool down since room temperature, described in observation
The state of the indicator light of temperature test box, until the indicator light extinguishes, the primary test of completion records the instruction after testing
Lamp extinguishes the operating temperature of moment.
8. the method for temperature classes test mass control according to claim 7, which is characterized in that in the step S4, obtain
The data area taken is
9. the method for temperature classes test mass control according to claim 1, which is characterized in that the chamber is equipped with
Temperature display unit, the operating temperature are read from the temperature display component.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596246A (en) * | 2018-12-07 | 2019-04-09 | 姚佳爱 | A kind of method of temperature shock test quality control |
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| CN106017727A (en) * | 2016-05-16 | 2016-10-12 | 合肥市芯海电子科技有限公司 | Multi-chip temperature testing and calibrating system and method |
| CN205843847U (en) * | 2016-06-29 | 2016-12-28 | 西安东仪综合技术实验室有限责任公司 | Verification/comparison device during weather class environmental test chamber |
| CN107515379A (en) * | 2017-07-28 | 2017-12-26 | 歌尔股份有限公司 | The method of inspection of combined high low temperature low air pressure testing chamber test mass |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030028345A1 (en) * | 1999-12-20 | 2003-02-06 | Watkins Arthur D. | Device for self-verifying temperature measurement and control |
| US20070025412A1 (en) * | 2005-07-30 | 2007-02-01 | Rolls-Royce Plc | Sensor measurement error |
| CN105092087A (en) * | 2015-03-20 | 2015-11-25 | 深圳市迅捷光通科技有限公司 | Photoelectric conversion module, temperature compensation method for photoelectric conversion module, and distributed light sensing system |
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