CN106248254A - The detection method of thermometer board sample circuit precision, Apparatus and system - Google Patents
The detection method of thermometer board sample circuit precision, Apparatus and system Download PDFInfo
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- CN106248254A CN106248254A CN201610624898.9A CN201610624898A CN106248254A CN 106248254 A CN106248254 A CN 106248254A CN 201610624898 A CN201610624898 A CN 201610624898A CN 106248254 A CN106248254 A CN 106248254A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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Abstract
The present invention relates to the detection method of thermometer board sample circuit precision, Apparatus and system.Described method includes: the detection device controlling that connect, optional resistance value from thermometer board to be detected successively switches to different resistance values so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects the resistance of different resistance；Obtain the described thermometer board measured value to each resistance；According to described measured value and corresponding actual resistance, determine in described thermometer board, whether the precision of sample circuit meets the measurement requirement preset.The present invention program can verify board sample circuit precision in board burning link, it is to avoid tears machine maintenance open, advantageously reduces cost.
Description
Technical field
The present invention relates to electronic circuit technology field, particularly relate to the detection side of thermometer board sample circuit precision
Method, Apparatus and system.
Background technology
Before electronic clinical thermometer dispatches from the factory, the certainty of measurement to clinical thermometer and accuracy is needed to test and verify.Market
Upper electronic clinical thermometer mostly use NTC temperature sensor as temperature element (NTC thermistor under certain measurement power,
Resistance value rises along with temperature and declines rapidly；This characteristic is utilized NTC thermistor to be come really by measuring its resistance value
Fixed corresponding temperature, thus reach detection and control the purpose of temperature).By use the sample circuit of NTC temperature sensor, MCU,
The board circuit such as battery and plastic structure part are combined as electronic clinical thermometer complete machine, and complete machine typically uses ultra-sonic welded etc. to be difficult to
The mode of dismounting assembles, to improve the water resistance of complete machine.
When at present electronic clinical thermometer certainty of measurement and accuracy being tested and verified, typically use clinical thermometer complete machine
Put into thermostatic water bath or oil groove, compared with the temperature that clinical thermometer system test goes out by tank actual temperature, to judge
Whether clinical thermometer system test result reaches requirement.But the precision that electronic clinical thermometer is measured and accuracy mainly by sample circuit and
NTC temperature sensor is determined, if measuring accuracy or accuracy do not pass through, then needs machine of tearing open to test link to board burning, with
Just, after demonstrating board precision, again test after welding assembly NTC temperature sensor to complete machine and verify.Existing test
The problem existed with the method for verification includes:
1: if the precision of clinical thermometer complete machine temperature and accuracy test verify unsuccessfully, it is difficult to be accurately positioned problem points.Because
Affect clinical thermometer precision and accuracy because have many aspects, including the ADC of board sample circuit, equivalent resistance precision etc.,
And NTC temperature sensor whether deficient purchase etc.；
2: the complete machine that precision is bad carries out maintenance verification, operation is excessively complicated.Take apart firstly the need of by clinical thermometer complete machine,
Take down the NTC temperature sensor of complete machine material, take off battery, after getting clinical thermometer board, then to the sample circuit on board
Carry out test checking and check；To be repaired complete after, then carry out the assembling of clinical thermometer complete machine, including the NTC sensing of welding complete machine
Device, battery and complete machine face drain pan ultrasonic etc.；
3: complete machine maintenance cost is too high, if cause clinical thermometer precision and the bad factor of accuracy be board sample circuit not
Good, then complete machine face-piece drain pan can be caused to tear machine open and to damage, it is impossible to secondary uses, and some glue also can to the NTC temperature sensor of shell
Cannot use because of the damage of shell.
4: that tests and verify is inefficient.
Summary of the invention
Based on this, the embodiment of the present invention provide the detection method of thermometer board sample circuit precision, Apparatus and system,
Board sample circuit precision can be verified, it is to avoid tear machine maintenance open, advantageously reduce cost in board burning link.
One aspect of the present invention provides the detection method of thermometer board sample circuit precision, including:
The detection device controlling that connect, optional resistance value from thermometer board to be detected successively switches to different
Resistance value so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects the resistance of different resistance；
Obtain the described thermometer board measured value to each resistance；
According to described measured value and corresponding actual resistance, determine that in described thermometer board, the precision of sample circuit is
The no satisfied measurement requirement preset.
Another aspect of the present invention provides the detection device of a kind of thermometer board sample circuit precision, including:
Switching control module, for controlling the detection dress of that be connected, optional resistance value with thermometer board to be detected
Put and successively switch to different resistance values so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects
Connect the resistance of different resistance；
Measured value acquisition module, for obtaining the described thermometer board measured value to each resistance；
Determination module, for according to described measured value and corresponding actual resistance, determining in described thermometer board and adopt
Whether the precision of sample circuit meets the measurement requirement preset.
Another aspect of the invention provide a kind of thermometer board sample circuit precision detecting system, including test main frame and
The detection device of optional resistance value；
Described test main frame controls to be connected with described detection device；Described test main frame, described detection device the most respectively with
Thermometer board to be tested connects；
Described detection device, successively switches to different resistance values for the control signal according to described test main frame, makes
Obtain the NTC temperature sensing interface of sample circuit in described thermometer board and successively connect the resistance of different resistance；
Described test main frame, for obtaining the described thermometer board measured value to each resistance；And according to described survey
Value and corresponding actual resistance, determine that in described thermometer board, the most satisfied measurement preset of the precision of sample circuit is wanted
Ask.
Technique scheme, by default detection device, in board burning link, thermometer board sample circuit
NTC temperature sensor interface is not connected to NTC temperature sensor, and is coupled in the detection device of optional resistance value；Detection
Device selects different resistance to be connected to NTC temperature sensor interface, simulates the multi-temperature of NTC sensor in complete machine with this
Point；The resistance value detected by comparison sample circuit and actual resistance, it is determined that whether the precision of board sample circuit meets
Thermometric requirement.The scheme of the above embodiment of the present invention, it is possible to test link witness plate card sample circuit in board burning
Precision and accuracy, it is to avoid tear machine maintenance open, advantageously reduce cost and verification complexity.
Accompanying drawing explanation
Fig. 1 is the indicative flowchart of the detection method of the thermometer board sample circuit precision of an embodiment；
Fig. 2 is the schematic diagram of the detection device of the thermometer board sample circuit precision of an embodiment；
Fig. 3 is the schematic diagram of the detecting system of the thermometer board sample circuit precision of an embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Fig. 1 is the indicative flowchart of the detection method of the thermometer board sample circuit precision of an embodiment；Such as Fig. 1 institute
Showing, the detection method of the thermometer board sample circuit precision in the present embodiment includes step:
S11, the detection device controlling that be connected, optional resistance value with thermometer board to be detected successively switches to not
Same resistance value so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects the electricity of different resistance
Resistance；
It is understood that the present embodiment also needs pre-build thermometer board sample circuit to be detected with described can
Select the connection of the detection device of resistance value.Refer specifically to set up NTC temperature in thermometer board sample circuit to be detected
Sensor interface and the connection of described detection device.Generally in the complete machine of electronic clinical thermometer, described thermometer plate to be detected
In card sample circuit, NTC temperature sensor interface is connected with NTC temperature sensor, utilizes resistance value rapid along with temperature rising
The characteristic declined, determines corresponding temperature by measuring resistance value.In the present embodiment, before complete machine is dressed up, not by institute
State NTC temperature sensor interface in sample circuit and be connected to NTC temperature sensor, but by itself and the detection of optional resistance value
Device connects, and is connected to different resistance values, to simulate the situation of different temperature spots by detection device.
S12, obtains the described thermometer board measured value to each resistance；
For being typically based on the thermometer of NTC temperature sensor, it is tested right to be detected by the conversion between temperature-resistance
The temperature of elephant, owing to the transformational relation between temperature-resistance is set in advance, this link does not interferes with the complete machine essence of thermometer
Degree, and in the ADC transformation process of resistance-voltage/current, due to the defective effect complete machine precision of ADC modular converter.Therefore,
The present embodiment, by obtaining the described thermometer board measured value to each resistance, can effectively judge sample circuit based on this
Precision.
S13, according to described measured value and corresponding actual resistance, determines the essence of sample circuit in described thermometer board
Whether degree meets the measurement requirement preset.
In the present embodiment, determine that the mode of the most satisfied measurement requirement preset of precision of thermometer board sample circuit can
Including:
A kind of comparison being directly to carry out resistance value, i.e. measured value described in comparison and corresponding actual resistance；Examine respectively
Survey the deviation of each measured value and corresponding actual resistance whether in setting Standard resistance range；If testing result is it is, the most really
It is set to the precision of sample circuit in described thermometer board and meets default measurement requirement；Otherwise, it is determined that for described thermometer
In board, the precision of sample circuit is unsatisfactory for the measurement requirement preset.
Another kind is by the comparison of temperature value, i.e. according to the resistance v. temperature transformational relation preset by described measured value and
Actual resistance is respectively converted into the temperature value of correspondence, and the temperature value that measured value described in comparison is corresponding is corresponding with actual resistance
Temperature value；Whether detect the deviation of temperature value corresponding to each measured value temperature value corresponding with actual resistance respectively in default temperature
In the range of degree (such as ± 0.1 DEG C)；If testing result is it is, it is determined that for the precision of sample circuit in described thermometer board
Meet the measurement requirement preset；Otherwise, it is determined that be unsatisfactory for, for the precision of sample circuit in described thermometer board, the survey preset
Amount requirement.
Former mode is without carrying out the conversion of resistance v. temperature, and testing efficiency is higher；Latter is more directly perceived, it is simple to user
Understand.
Preferably, in the present embodiment, described detection device includes the selective resistance that at least 4 resistances are different, example
Such as 20k, 30k, 40k, 50k precision resister；And described resistance is precision resister, precision is more than or equal to the reference preset
Precision T0, wherein,
T0=K/C*100%
Wherein, C is the reference temperature set, and K is resistance variation with temperature amount near described reference temperature, and unit is
ohm/0.1℃。
Such as: certain NTC temperature sensor is 50k-20k the resistance variations of 20 DEG C-50 DEG C, and the resistance when 37 DEG C
For 30k, near 37 DEG C, resistance variation with temperature amount is 120ohm/0.1 DEG C.If clinical thermometer complete machine to meet ± 0.1 DEG C want
Ask, then the error requirements of precision resister at least should be:
Tolerance (resistance precision)=120/30k*100%=0.4%
I.e. resistance error or accuracy selection is better than 0.4%, and optional 30k error is 0.1% or 30k error 0.05%
Precision resister.
Preferably, the accuracy selection of each resistance is identical, reduces test error with this.Such as assume 30k resistance selection
The resistance of 0.1% precision, then the error requirements of the precision resister of 20k, 40k, 50k is also required to be 0.1%.
The detection method of the thermometer board sample circuit precision of above-described embodiment, technique scheme, by default
Detection device, in board burning link, the NTC temperature sensor interface of thermometer board sample circuit is not connected to NTC temperature and passes
Sensor, and be coupled in the detection device of optional resistance value；Detection device selects different resistance to be connected to NTC temperature sensing
Device interface, simulates the multi-temperature point of NTC sensor in complete machine with this；The resistance value detected by comparison sample circuit and
Actual resistance, it is determined that whether the precision of board sample circuit meets thermometric requirement.The side of the above embodiment of the present invention
Case, it is possible at board burning test link witness plate card sample circuit precision and accuracy, it is to avoid tear machine maintenance open, advantageously reduce
Cost and verification complexity.
It should be noted that for aforesaid embodiment of the method, in order to simplicity describes, it is all expressed as a series of dynamic
Combining, but those skilled in the art should know, the present invention is not limited by described sequence of movement, because foundation
The present invention, some step can use other order or carry out simultaneously.
Based on the thought identical with the detection method of the thermometer board sample circuit precision in above-described embodiment, the present invention
Also providing for the detection device of thermometer board sample circuit precision, this device can be used for performing said temperature meter board sample circuit
The detection method of precision.For convenience of description, the structural representation of the detection device embodiment of thermometer board sample circuit precision
In figure, illustrate only the part relevant to the embodiment of the present invention, it will be understood by those skilled in the art that schematic structure not structure
The restriction of twin installation, can include that ratio illustrates more or less of parts, or combine some parts, or different parts
Arrange.
Fig. 2 is the schematic diagram of the detection device of the thermometer board sample circuit precision of one embodiment of the invention；
As in figure 2 it is shown, the detection device of the thermometer board sample circuit precision of the present embodiment includes: switching control module 210, measurement
Value acquisition module 220 and determination module 230, carry out as described below to each module below:
Described switching control module 310, for controlling that be connected, optional resistance value with thermometer board to be detected
Detection device successively switches to different resistance values so that the NTC temperature sensing interface of sample circuit in described thermometer board
Successively connect the resistance of different resistance；
Described measured value acquisition module 220, for obtaining the described thermometer board measured value to each resistance；
Described determination module 230, for according to described measured value and corresponding actual resistance, determining described thermometer plate
In card, whether the precision of sample circuit meets the measurement requirement preset.
As a preferred implementation, described determination module 230 comprises the steps that the first identifying unit, measured value described in comparison
With corresponding actual resistance；Detect whether each measured value is setting Standard resistance range with the deviation of corresponding actual resistance respectively
In；If testing result is it is, it is determined that meet default measurement requirement for the precision of sample circuit in described thermometer board；
Otherwise, it is determined that be unsatisfactory for, for the precision of sample circuit in described thermometer board, the measurement requirement preset.
As another preferred implementation, described determination module 230 comprises the steps that the second identifying unit, for according to presetting
Resistance v. temperature transformational relation described measured value and actual resistance are respectively converted into the temperature value of correspondence, survey described in comparison
The temperature value that temperature value that value is corresponding is corresponding with actual resistance；Detect temperature value corresponding to each measured value and reality electricity respectively
Whether the deviation of the temperature value that resistance is corresponding is in the range of design temperature；If testing result is it is, it is determined that for described temperature
In meter board, the precision of sample circuit meets default measurement requirement；Otherwise, it is determined that for sampling electricity in described thermometer board
The precision on road is unsatisfactory for the measurement requirement preset.
By the detection device of the thermometer board sample circuit precision of the present embodiment, can be in burning link to thermometer plate
Card sample circuit precision carries out multi-point sampler, it is to avoid cost problem high, inefficient during system test.
Fig. 3 is the schematic diagram of the detecting system of the thermometer board sample circuit precision of an embodiment；This enforcement
Detecting system in example includes testing main frame 100 and the detection device 200 of optional resistance value.Described test main frame 100 and institute
State detection device to control to connect；Described test main frame 100, described detection device 200 the most respectively with thermometer board to be tested
300 connect.
In described detecting system, described detection device 200, for the control signal according to described test main frame 100 first
After switch to different resistance values so that NTC temperature sensor in the thermometer board 300 being connected with described detection device 200
Interface successively connects different resistance values.
Preferably, as it is shown on figure 3, described detection device 200 includes processor MCU, selects switch and multiple for choosing
The resistance selected, the resistance value of multiple resistance is different；The control signal input connecting test main frame of described processor, described
The control signal outfan of processor is connected with the described control signal input selecting switch；Described processor is main according to test
The control signal of machine controls described selection switch and carries out resistance switching, so that the resistance of correspondence selects switch connection to treat by described
The NTC temperature sensing interface of the thermometer board sample circuit of test.Described selection switch can be analog switch or relay
Deng, as long as being capable of between different resistance values switching.
Preferably, described detection device includes the selective resistance that at least 4 resistances are different, such as 20k, 30k,
40k, 50k precision resister；And described resistance is precision resister, precision is more than or equal to reference precision T0 preset, its
In,
T0=K/C*100%
Wherein, C is the reference temperature set, and K is resistance variation with temperature amount near described reference temperature, and unit is
ohm/0.1℃.And the accuracy selection of each resistance is identical, reduces test error with this.Such as assume 30k resistance selection
The resistance of 0.1% precision, then the error requirements of the precision resister of 20k, 40k, 50k is also required to be 0.1%.
Described test main frame 100, for obtaining in described thermometer board sample circuit 300 for the survey of each resistance value
Value；And according to described measured value and corresponding actual resistance, determine the essence of sample circuit 300 in described thermometer board
Whether degree meets the measurement requirement preset.
Preferably, described test main frame 100 comprises the steps that determination module, for measured value described in comparison and corresponding reality
Resistance value；Detect the deviation of each measured value and corresponding actual resistance respectively whether in set point；If testing result is equal
It is yes, it is determined that meet default measurement requirement for the precision of sample circuit in described thermometer board；Otherwise, it is determined that for institute
State the precision of sample circuit in thermometer board and be unsatisfactory for the measurement requirement preset.Or, described determination module is for according to pre-
If resistance v. temperature transformational relation described measured value and actual resistance are respectively converted into the temperature value of correspondence, described in comparison
The temperature value that temperature value that measured value is corresponding is corresponding with actual resistance；Detect temperature value corresponding to each measured value respectively with actual
The deviation of the temperature value that resistance value is corresponding whether in the range of；If testing result is it is, it is determined that for described thermometer board
The precision of middle sample circuit meets default measurement requirement；Otherwise, it is determined that for the essence of sample circuit in described thermometer board
Degree is unsatisfactory for the measurement requirement preset.
As a preferred implementation, as it is shown on figure 3, thermometer board 300 includes MCU and and adopting of being attached thereto
Sample circuit, the VDD interface voltage of the ADC of described sample circuit is fixed, by corresponding NTC temperature sensor interface IN0's
Voltage and the voltage of corresponding equivalent resistance interface IN1, the electricity connected based on electric resistance partial pressure principle detection NTC temperature sensor interface
Resistance.
Preferably, as it is shown on figure 3, described detection device 200 includes the selective resistance that at least 4 resistances are different
(R1, R2, R3, R4, respectively 20k, 30k, 40k, 50k precision resister).When needing the accuracy test to board sample circuit
Time, NTC temperature sensor interface is sequentially connected with from different precision resisters respectively.If the resistance junction tested by sample circuit
Fruit can not meet test error requirement at 4 resistance value points, and sample circuit is by gathering the resistance of different temperature points in other words, changes
The temperature error calculated exceed setting ± 0.1 DEG C, then it is believed that the precision of sample circuit can not meet use requirement.Need into
Row maintenance or calibration.If error is relatively big, then needs to consider to change ADC or equivalent resistance circuit, if error is less, then carry out
Data calibration, until the certainty of measurement of sample circuit meets requirement.
By above-mentioned detecting system, compare the existing following advantage of traditional detection method:
1, precision resister test verification sample circuit precision is utilized in clinical thermometer board burning test link increase, it is ensured that
Precision and the accuracy of board sample circuit meet requirement, it is possible to effectively reduce the difficulty of system test verification；
2, energy quickly positioning electronic clinical thermometer precision or the bad problem points of accuracy: assume that board accuracy test verifies not
Pass through, then have only to maintenance and inspection board card material, it is assumed that the verification of complete machine accuracy test is not passed through, then have only to determine whether
Bad for NTC；
3, the accuracy test calibration of board is diversifiedly variable, the most general: if occurring, complete machine NTC temperature sensor occurs
When material is changed.The inspection of board accuracy test has only to change corresponding different resistance precision resisters according to the method in example
Carry out test verifying, it is to avoid the replacing of board card material；
4, reducing complete machine maintenance loss, increasing production efficiency: complete machine precision or accuracy are still unsatisfactory for requirement if finding,
Then have only to the problem that the NTC temperature sensor in consideration complete machine is bad.Eliminate owing to board is bad and cause complete machine material
The problem of loss, too increases production efficiency simultaneously.
It should be noted that the embodiment party of the detection device/system of the thermometer board sample circuit precision of above-mentioned example
The contents such as in formula, the information between each module/unit is mutual, execution process, due to preceding method embodiment of the present invention based on
Same design, its technique effect brought is identical with preceding method embodiment of the present invention, and particular content can be found in the inventive method
Narration in embodiment, here is omitted.
Additionally, in the embodiment of the detection device/system of the thermometer board sample circuit precision of above-mentioned example, each merit
The logical partitioning of energy module is merely illustrative of, can as required in actual application, and the such as configuration for corresponding hardware is wanted
Ask or the convenient of realization of software considers, above-mentioned functions distribution is completed by different functional modules, will described thermometer
In board sample circuit precision detection device internal structure be divided into different functional modules, with complete described above entirely
Portion or partial function.The most each function mould both can realize to use the form of hardware, it would however also be possible to employ software function module
Form realizes.
It will appreciated by the skilled person that all or part of flow process realizing in above-described embodiment method, be can
Completing instructing relevant hardware by computer program, described program can be stored in an embodied on computer readable storage and be situated between
In matter, as independent production marketing or use.Described program upon execution, can perform the complete of the embodiment such as above-mentioned each method
Portion or part steps.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only
Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc..
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has the portion described in detail in certain embodiment
Point, may refer to the associated description of other embodiments.It is appreciated that the term " first " used in it, " second " etc. are at this
Literary composition is used for distinguishing object, but these objects should not be limited by these terms.
Embodiment described above only have expressed the several embodiments of the present invention, it is impossible to is interpreted as the scope of the claims of the present invention
Restriction.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise,
Can also make some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention
Should be as the criterion with claims.
Claims (10)
1. the detection method of a thermometer board sample circuit precision, it is characterised in that including:
The detection device controlling that connect, optional resistance value from thermometer board to be detected successively switches to different resistance
Value so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects the resistance of different resistance；
Obtain the described thermometer board measured value to each resistance；
According to described measured value and corresponding actual resistance, determine that in described thermometer board, the precision of sample circuit is the fullest
The measurement requirement that foot is preset.
The detection method of thermometer board sample circuit precision the most according to claim 1, it is characterised in that according to described
Measured value and corresponding actual resistance, determine in described thermometer board, whether the precision of sample circuit meets the measurement preset
The step required includes:
Measured value described in comparison and corresponding actual resistance；
Detect the deviation of each measured value and corresponding actual resistance respectively whether in setting Standard resistance range；If testing result is equal
It is yes, it is determined that meet default measurement requirement for the precision of sample circuit in described thermometer board；Otherwise, it is determined that for institute
State the precision of sample circuit in thermometer board and be unsatisfactory for the measurement requirement preset.
The detection method of thermometer board sample circuit precision the most according to claim 1, it is characterised in that according to described
Measured value and corresponding actual resistance, determine in described thermometer board, whether the precision of sample circuit meets the measurement preset
The step required includes:
According to default resistance v. temperature transformational relation, described measured value and actual resistance are respectively converted into the temperature of correspondence
Value, the temperature value that temperature value that measured value described in comparison is corresponding is corresponding with actual resistance；
Whether detect the deviation of temperature value corresponding to each measured value temperature value corresponding with actual resistance respectively at design temperature
In the range of；If testing result is it is, it is determined that meet default measurement for the precision of sample circuit in described thermometer board
Requirement；Otherwise, it is determined that be unsatisfactory for, for the precision of sample circuit in described thermometer board, the measurement requirement preset.
The detection method of thermometer board sample circuit precision the most according to claim 1, it is characterised in that described detection
Device includes multiple selective resistance, and the precision of described resistance is more than or equal to reference precision T0 preset, wherein,
T0=K/C*100%
Wherein, C is the reference temperature set, and K is resistance variation with temperature amount near described reference temperature, and unit is ohm/
0.1℃。
The detection method of thermometer board sample circuit precision the most according to claim 4, it is characterised in that described detection
Resistance selective in device is at least four, and the precision of each resistance is identical.
6. the detection device of a thermometer board sample circuit precision, it is characterised in that including:
Switching control module, for controlling the detection device of that be connected, optional resistance value with thermometer board to be detected first
After switch to different resistance values so that in described thermometer board, the NTC temperature sensing interface of sample circuit successively connects not
Resistance with resistance；
Measured value acquisition module, for obtaining the described thermometer board measured value to each resistance；
Determination module, for according to described measured value and corresponding actual resistance, determines sampling electricity in described thermometer board
Whether the precision on road meets the measurement requirement preset.
The detection device of thermometer board sample circuit precision the most according to claim 6, it is characterised in that described judgement
Module includes:
First identifying unit, measured value and corresponding actual resistance described in comparison；Detect each measured value and corresponding reality respectively
Whether the deviation of border resistance value is in setting Standard resistance range；If testing result is it is, it is determined that in described thermometer board
The precision of sample circuit meets default measurement requirement；Otherwise, it is determined that for the precision of sample circuit in described thermometer board
It is unsatisfactory for the measurement requirement preset.
The detection device of thermometer board sample circuit precision the most according to claim 6, it is characterised in that described judgement
Module includes:
Second identifying unit, is used for described measured value and actual resistance difference according to the resistance v. temperature transformational relation preset
Be converted to the temperature value of correspondence, the temperature value that temperature value that measured value described in comparison is corresponding is corresponding with actual resistance；Examine respectively
Survey the deviation of temperature value corresponding to each measured value temperature value corresponding with actual resistance whether in the range of design temperature；If inspection
Survey result and be and be, it is determined that meet default measurement requirement for the precision of sample circuit in described thermometer board；Otherwise, then
It is defined as the precision of sample circuit in described thermometer board and is unsatisfactory for the measurement requirement preset.
9. the detecting system of a thermometer board sample circuit precision, it is characterised in that include testing main frame and optional electricity
The detection device of resistance；
Described test main frame controls to be connected with described detection device；Described test main frame, described detection device are the most respectively with to be measured
The thermometer board of examination connects；
Described detection device, successively switches to different resistance values for the control signal according to described test main frame so that institute
The NTC temperature sensing interface stating sample circuit in thermometer board successively connects the resistance of different resistance；
Described test main frame, for obtaining the described thermometer board measured value to each resistance；And according to described measured value
With corresponding actual resistance, determine in described thermometer board, whether the precision of sample circuit meets the measurement requirement preset.
The detecting system of thermometer board sample circuit precision the most according to claim 9, it is characterised in that described survey
Examination main frame includes:
First test module, for measured value described in comparison and corresponding actual resistance；Detect each measured value respectively with corresponding
The deviation of actual resistance whether in setting Standard resistance range；If testing result is it is, it is determined that for described thermometer plate
In card, the precision of sample circuit meets default measurement requirement；Otherwise, it is determined that for sample circuit in described thermometer board
Precision is unsatisfactory for the measurement requirement preset；
Second test module, is used for described measured value and actual resistance difference according to the resistance v. temperature transformational relation preset
Be converted to the temperature value of correspondence, the temperature value that temperature value that measured value described in comparison is corresponding is corresponding with actual resistance；Examine respectively
Survey the deviation of temperature value corresponding to each measured value temperature value corresponding with actual resistance whether in the range of design temperature；If inspection
Survey result and be and be, it is determined that meet default measurement requirement for the precision of sample circuit in described thermometer board；Otherwise, then
It is defined as the precision of sample circuit in described thermometer board and is unsatisfactory for the measurement requirement preset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624898.9A CN106248254A (en) | 2016-07-29 | 2016-07-29 | The detection method of thermometer board sample circuit precision, Apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624898.9A CN106248254A (en) | 2016-07-29 | 2016-07-29 | The detection method of thermometer board sample circuit precision, Apparatus and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389743A (en) * | 2017-06-14 | 2017-11-24 | 广州视源电子科技股份有限公司 | The measurement accuracy detection method and blood testing instrument of a kind of blood testing instrument |
| CN109557374A (en) * | 2019-01-22 | 2019-04-02 | 云南中烟工业有限责任公司 | The test device and method of small resistive element temperature-coefficient of electrical resistance |
| CN112014641A (en) * | 2019-05-28 | 2020-12-01 | 北京新能源汽车股份有限公司 | Method and device for testing finished automobile insulation resistance detection precision of electric automobile |
| CN112834080A (en) * | 2020-12-31 | 2021-05-25 | 上海移为通信技术股份有限公司 | Calibration method and device of resistance type temperature sensor, terminal and storage medium |
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| CN104697669A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Method and device for calibrating temperature collection channel in battery management system |
| CN104931155A (en) * | 2015-05-28 | 2015-09-23 | 重庆川仪自动化股份有限公司 | Temperature transmitter automatic inspection device and method |
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| CN104697669A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Method and device for calibrating temperature collection channel in battery management system |
| CN104931155A (en) * | 2015-05-28 | 2015-09-23 | 重庆川仪自动化股份有限公司 | Temperature transmitter automatic inspection device and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389743A (en) * | 2017-06-14 | 2017-11-24 | 广州视源电子科技股份有限公司 | The measurement accuracy detection method and blood testing instrument of a kind of blood testing instrument |
| CN107389743B (en) * | 2017-06-14 | 2020-04-07 | 广州视源电子科技股份有限公司 | Measurement precision detection method of blood test instrument and blood test instrument |
| CN109557374A (en) * | 2019-01-22 | 2019-04-02 | 云南中烟工业有限责任公司 | The test device and method of small resistive element temperature-coefficient of electrical resistance |
| CN112014641A (en) * | 2019-05-28 | 2020-12-01 | 北京新能源汽车股份有限公司 | Method and device for testing finished automobile insulation resistance detection precision of electric automobile |
| CN112014641B (en) * | 2019-05-28 | 2023-09-15 | 北京新能源汽车股份有限公司 | Method and device for testing insulation resistance detection precision of whole electric automobile |
| CN112834080A (en) * | 2020-12-31 | 2021-05-25 | 上海移为通信技术股份有限公司 | Calibration method and device of resistance type temperature sensor, terminal and storage medium |
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Application publication date: 20161221 |