CN109708780A - A kind of high-precision fiducial temperature acquisition device and its method - Google Patents
A kind of high-precision fiducial temperature acquisition device and its method Download PDFInfo
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- CN109708780A CN109708780A CN201811579570.5A CN201811579570A CN109708780A CN 109708780 A CN109708780 A CN 109708780A CN 201811579570 A CN201811579570 A CN 201811579570A CN 109708780 A CN109708780 A CN 109708780A
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Abstract
A kind of high-precision fiducial temperature acquisition device and its method, warm conductor is passed including being equipped between thermostatic equipment A, thermostatic equipment B, thermostatic equipment A and thermostatic equipment B, it passes warm conductor and is equipped with multiple temperature sensors, multiple temperature sensors are connected with processor, processor is connected with test mechanical arm, processor includes sensor temperature logging modle, obtains module and datum mark computing module closest to reference temperature sensor, and sensor temperature logging modle is used to record the temperature of each temperature sensor；Module is obtained closest to reference temperature sensor to be used to find two adjacent temperature sensors closest to fiducial temperature；Datum mark computing module is used to calculate the datum mark for passing that temperature on warm conductor is benchmark temperature；Test mechanical arm under the control of a processor, trial product to be measured is placed on the datum mark for passing warm conductor.The present invention can effectively reduce the equipment cost of producing line, can effectively improve production efficiency.
Description
Technical field
The present invention relates to fiducial temperature acquisition device and its methods, are specifically related to a kind of high-precision fiducial temperature acquisition
Devices and methods therefor.
Background technique
As mercurial thermometer is gradually withdrawn from the market, the demand of electronic thermometer is increasing.Regardless of contact, infrared type
Electronic thermometer or temperature patch, require the calibration and test of completing temperature in process of production, clinical thermometer it is substantially smart
Degree is 0.1 degree Celsius, therefore calibration in production process or test need the temperature reference source of higher precision.
There is the equipment of many constant temperature on existing market, the equilibrium temperature of different accuracy can be provided, but precision is got over
The system of height, thermostatic equipment is more complicated, and price also exponential rising, factory mass produces bring equipment purchase and dimension
Shield cost increases.
Using the thermostatic equipment of low precision, although can also avoid the time transfinited within its period of waves, selection works as it
Calibration test is carried out when reaching in requirement temperature range, but production efficiency will reduce.
Therefore a kind of low cost is needed on production line, efficient method and apparatus provide high-precision temperature reference
Source is calibrated and is tested to temperature product to facilitate.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of above-mentioned background technique, provide a kind of high-precision base
Quasi- temperature acquisition device and its method, high-precision temperature reference is generated with the temperature control of low precision, can effectively reduce producing line
Equipment cost can effectively improve production efficiency.
The technical solution used to solve the technical problems of the present invention is that a kind of high-precision fiducial temperature acquisition device, packet
Thermostatic equipment A, thermostatic equipment B, processor and test mechanical arm are included, is equipped between the thermostatic equipment A and thermostatic equipment B and passes temperature
Conductor passes warm conductor and is equipped with multiple temperature sensors, and multiple temperature sensors are connected with processor, processor and test machine
Tool arm be connected, the processor include sensor temperature logging modle, closest to reference temperature sensor obtain module, datum mark
Computing module, sensor temperature logging modle is connected with closest to reference temperature sensor acquisition module, closest to fiducial temperature
Sensor obtains module and is connected with datum mark computing module, and the sensor temperature logging modle is for recording each temperature sensor
Temperature；It is described to obtain two adjacent temperature biographies of the module for finding closest to fiducial temperature closest to reference temperature sensor
Sensor；The datum mark computing module is used to calculate the datum mark for passing that temperature on warm conductor is benchmark temperature；The test machine
Tool arm under the control of a processor, trial product to be measured is placed on the datum mark for passing warm conductor.
Further, the warm conductor of the biography is metal bar conductor.
Further, the middle section for passing warm conductor is enclosed with heat preserving and insulating material.
A kind of high-precision fiducial temperature acquisition methods, comprising the following steps:
(1) the thermostatic equipment A and thermostatic equipment B that temperature accuracy is D are chosen, a biography temperature end conductor A is placed in thermostatic equipment A
On, the temperature end conductor B will be passed and be placed on thermostatic equipment B；
(2) it passes warm conductor interlude and places multiple temperature sensors, set and need obtained fiducial temperature as TBenchmark, constant temperature is set
The temperature of standby A is set as TA, TA≤TBenchmark-D；The temperature of thermostatic equipment B is set as TB, TB≥TBenchmark+D；
(3) it finds on passing warm conductor closest to fiducial temperature TBenchmarkTwo adjacent temperature sensor SiAnd Si+1, read temperature
Sensor SiTemperature be Ti, position Li, LiFor temperature sensor SiWith a distance from the biography temperature end conductor A；Read temperature sensor
Si+1Temperature be Ti+1, position Li+1, Li+1For temperature sensor S i+1With a distance from the biography temperature end conductor A；
(4) setting passes the upper point on the basis of being set to the point of L of warm conductor, and datum mark temperature is TBenchmark, L is the benchmark passed on warm conductor
Point is with a distance from the biography temperature end conductor A；According to pass warm conductor intermediate portion present it is dull linear or close to linear TA~TBBetween
Temperature Distribution can be obtained:
(L-Li)/(Li+1-Li)=(TBenchmark-Ti)/(T i+1-Ti),
That is L=Li+ (Li+1-Li) × (TBenchmark-Ti)/(T i+1-Ti), then acquiring temperature on the warm conductor of biography is TBenchmarkDatum mark；
(5) trial product to be measured is placed in the warm conductor temperature of biography is TBenchmarkDatum mark on, get high-precision fiducial temperature, open
Begin starting calibration or testing process.
Further, the temperature accuracy D of the thermostatic equipment A and thermostatic equipment B is one at least lower than required temperature accuracy
The order of magnitude.
Further, the spacing distance between adjacent temperature sensor is identical.
Compared with prior art, advantages of the present invention is as follows:
The present invention is generated high-precision temperature reference with the temperature control of low precision, can effectively be dropped using the thermostatic equipment of low cost
The equipment cost of low yield line；It is hardly influenced, is dynamically locked optimal by thermostatic equipment temperature control fluctuation in production process
Fiducial temperature point, meets uninterrupted batch production requirements, can effectively improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high-precision fiducial temperature acquisition device of the embodiment of the present invention.
Fig. 2 is the structural block diagram of the processor of embodiment illustrated in fig. 1.
In figure: 1-thermostatic equipment A, 2-thermostatic equipment B, 3-long metals pass warm conductors,
4-temperature sensors, 5-processors, 5-1-sensor temperature logging modle, 5-2-are closest to reference temperature sensor
Obtain module, 5-3-datum mark computing module, 6-test mechanical arms, 7-trial products to be measured.
Specific embodiment
With reference to the accompanying drawing and specific embodiment present invention is further described in detail.
Referring to Fig.1, the high-precision fiducial temperature acquisition device of the present embodiment includes thermostatic equipment A 1, thermostatic equipment B
2, processor 5 and test mechanical arm 6 are equipped with long metal and pass warm conductor 3, long metal between thermostatic equipment A 1 and thermostatic equipment B 2
It passes warm conductor 3 and is equipped with multiple temperature sensors 4, multiple temperature sensors 4 are connected with processor 5, processor 5 and test machine
Tool arm 6 is connected.
Referring to Fig. 2, processor 5 obtains module including sensor temperature logging modle 5-1, closest to reference temperature sensor
5-2, datum mark computing module 5-3, sensor temperature logging modle 5-1 obtain module 5-2 with closest to reference temperature sensor
It is connected, obtains module 5-2 closest to reference temperature sensor and be connected with datum mark computing module 5-3, sensor temperature records mould
Block 5-1 is used to record the temperature of each temperature sensor 4；Module 5-2 is obtained closest to reference temperature sensor most to connect for finding
Two adjacent temperature sensors of nearly fiducial temperature；Datum mark computing module 5-3 passes temperature on warm conductor 3 for calculating long metal
Degree is the datum mark of benchmark temperature.
Trial product 7 to be measured can be placed in the benchmark that long metal passes warm conductor 3 under the control of processor 5 by test mechanical arm 6
Point on.
In the present embodiment, it is metal bar that long metal, which passes warm conductor 3, and the middle section that long metal passes warm conductor 3 is enclosed with guarantor
Warm heat-barrier material, to reduce the influence of outer bound pair temperature.
The high-precision fiducial temperature acquisition methods of the present embodiment, comprising the following steps:
(1) a root long metal is passed warm conductor by the thermostatic equipment A 1 and thermostatic equipment B 2 for choosing low precision (temperature accuracy D)
3 one end (end A) are placed on thermostatic equipment A 1, and long metal is passed warm 3 other end of conductor (end B) and is placed on thermostatic equipment B 2；
(2) long metal passes warm 3 interlude of conductor and places multiple temperature sensors 4, sets and needs obtained fiducial temperature as TBenchmark,
The temperature of thermostatic equipment A 1 is set as TA, TA≤TBenchmark-D；The temperature of thermostatic equipment B 2 is set as TB, TB≥TBenchmark+D；Long metal
Passing warm 3 both ends temperature of conductor is T respectivelyAAnd TB, it is based on good heating conduction, long metal passes 3 middle section of warm conductor and then presents
It is dull linear or close to linear TA~TBBetween Temperature Distribution；
(3) processor 5 is passed in long metal and is found on warm conductor 3 closest to fiducial temperature TBenchmarkTwo adjacent temperature sensor Si
And Si+1, read temperature sensor SiTemperature be Ti, position Li, LiFor temperature sensor Si3 end A of warm conductor is passed from long metal
Distance；Read temperature sensor Si+1Temperature be Ti+1, position Li+1, Li+1For temperature sensor S i+1Temperature is passed from long metal
The distance at 3 end A of conductor；
(4) it sets long metal and passes the upper point on the basis of being set to the point of L of warm conductor 3, datum mark temperature is TBenchmark, L is that long metal passes temperature
Datum mark on conductor 3 passes with a distance from 3 end A of warm conductor from long metal；Warm 3 middle section of conductor is passed according to long metal, and list is presented
Adjust linear or close to linear TA~TBBetween Temperature Distribution, can be obtained:
(L-Li)/(Li+1-Li)=(TBenchmark-Ti)/(T i+1-Ti),
That is L=Li+ (Li+1-Li) × (TBenchmark-Ti)/(T i+1-Ti), then acquiring long metal and passing temperature on warm conductor 3 is TBenchmarkBase
On schedule；
(5) processor 5 controls the movement of test mechanical arm 6, and it is T that trial product 7 to be measured, which is placed in long metal to pass warm 3 temperature of conductor,Benchmark's
On datum mark, high-precision fiducial temperature is got, starts starting calibration or testing process.Due to low precision thermostatic equipment temperature
Certain fluctuation is had, the temperature value of each temperature sensor 4 of 5 continuous Query of processor, it is T that temperature is readjusted when changingBenchmark
Datum mark position so that trial product 7 to be measured available one high-precision temperature reference source always in production process.
It is explained below with reference to high-precision fiducial temperature acquisition methods of the specific numerical value to the present embodiment.
One accurately 25 DEG C degrees Celsius are needed on the production line of set temperature product, the base as temperature correction and test
It is quasi-.There is the thermostatic equipment of low precision, can reach ± 1 degree of precision.Then by the temperature T of thermostatic equipment A 1AIt is adjusted to: TA≤25-1
DEG C i.e. TA≤24℃；By the temperature T of thermostatic equipment B 2BIt is adjusted to: TB>=25+1 DEG C i.e. TB≥26℃。
One root long metal is passed warm 3 one end of conductor (end A) to be placed on thermostatic equipment A 1, it is another that long metal is passed warm conductor 3
End (end B) is placed on thermostatic equipment B 2；The end A that metal long in this way passes warm conducting bar is fluctuated at 24 DEG C or so, and long metal passes warm conductor
3 end B is fluctuated at 26 DEG C or so, but the precision controlling based on thermostatic equipment, is not in while being all higher than 25 DEG C or being below
25 DEG C of the case where.Metal long in this way, which passes warm conductor 3, just will appear from low to high, be distributed comprising 25 DEG C of continuous temperatures.
It is passed in long metal and is spaced apart multiple temperature sensors 4 on warm conductor 3, for example put one every 100mm, processing
Device 5 can get the distribution situation that entire long metal passes temperature on warm conductor 3；Processor 5 is first from each temperature sensor 4
In, it obtains closest to two adjacent sensors before and after 25 DEG C of temperature, it is assumed that long metal passes the 6th sensor on warm conductor 3
Temperature be 24.93 DEG C, the temperature of the 7th sensor is 25.17 DEG C, due to that can be line in this section by temperature apart from short
Property variation to handle, then pass through calculating:
N=(25-24.93)/(25.17-24.93) × 100mm=29.17mm；
N indicates that long metal passes the distance of the 6th sensor of distance between reference on warm conductor 3, i.e., in the 6th and the 7th sensor
Between, the place of the 6th sensor 29.17mm of distance is closest to 25 DEG C of temperature.Test mechanical arm 6 can be by trial product to be measured
7 are placed on and are calibrated or tested herein.
Assuming that the positioning accuracy maximum deviation of mechanical arm has 2mm, then it can calculate under this condition, theoretic precision can also be with
Reach:
(25.17-24.93)/100×2≈0.005℃；
As long as being able to satisfy the needs of production test completely for the clinical thermometer of 0.1 DEG C of precision.
Meanwhile when the reading of temperature sensor 4 starts variation, processor 5 can be handled in real time, redefine benchmark
Point guarantees precision not with the influence of fluctuations of low precision thermostatic equipment.
In specific practical application, between adjacent temperature sensor can equidistantly can also be with non-equidistant.
The temperature accuracy D of thermostatic equipment A and thermostatic equipment B of the present invention can at least reduce a number than required temperature accuracy
Magnitude requirement, temperature accuracy as required are 0.1 DEG C, then the temperature accuracy D of the thermostatic equipment A and thermostatic equipment B that use can be 1
℃。
The present invention is generated high-precision temperature reference with the temperature control of low precision, can be had using the thermostatic equipment of low cost
Effect reduces the equipment cost of producing line；It is hardly influenced, is dynamically locked most by thermostatic equipment temperature control fluctuation in production process
Good fiducial temperature point, meets uninterrupted batch production requirements.
Those skilled in the art can carry out various modifications to the present invention and modification, if these modifications and variations are at this
Within the scope of invention claim and its equivalent technologies, then these modifications and variations are also within protection scope of the present invention.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (6)
1. a kind of high-precision fiducial temperature acquisition device, it is characterised in that: including thermostatic equipment A, thermostatic equipment B and processor
It with test mechanical arm, is equipped between the thermostatic equipment A and thermostatic equipment B and passes warm conductor, passed warm conductor and be equipped with multiple temperature
Sensor, multiple temperature sensors are connected with processor, and processor is connected with test mechanical arm, and the processor includes sensing
Device thermograph module obtains module, datum mark computing module, sensor temperature logging modle closest to reference temperature sensor
It is connected with module is obtained closest to reference temperature sensor, obtains module closest to reference temperature sensor and datum mark calculates mould
Block is connected, and the sensor temperature logging modle is used to record the temperature of each temperature sensor；It is described to be passed closest to fiducial temperature
Sensor obtains module and is used to find two adjacent temperature sensors closest to fiducial temperature；The datum mark computing module is used for
Calculate the datum mark for passing that temperature on warm conductor is benchmark temperature；The test mechanical arm under the control of a processor, will be to be measured
Trial product is placed on the datum mark for passing warm conductor.
2. high-precision fiducial temperature acquisition device as described in claim 1, it is characterised in that: the warm conductor of the biography is metal
Stick conductor.
3. high-precision fiducial temperature acquisition device as claimed in claim 1 or 2, it is characterised in that: the warm conductor of biography
Middle section is enclosed with heat preserving and insulating material.
4. a kind of high-precision fiducial temperature acquisition methods, which comprises the following steps:
(1) the thermostatic equipment A and thermostatic equipment B that temperature accuracy is D are chosen, a biography temperature end conductor A is placed in thermostatic equipment A
On, the temperature end conductor B will be passed and be placed on thermostatic equipment B；
(2) it passes warm conductor interlude and places multiple temperature sensors, set and need obtained fiducial temperature as TBenchmark, constant temperature is set
The temperature of standby A is set as TA, TA≤TBenchmark-D；The temperature of thermostatic equipment B is set as TB, TB≥TBenchmark+D；
(3) it finds on passing warm conductor closest to fiducial temperature TBenchmarkTwo adjacent temperature sensor SiAnd Si+1, read temperature and pass
Sensor SiTemperature be Ti, position Li, LiFor temperature sensor SiWith a distance from the biography temperature end conductor A；Read temperature sensor Si+1
Temperature be Ti+1, position Li+1, Li+1For temperature sensor S i+1With a distance from the biography temperature end conductor A；
(4) setting passes the upper point on the basis of being set to the point of L of warm conductor, and datum mark temperature is TBenchmark, L is the benchmark passed on warm conductor
Point is with a distance from the biography temperature end conductor A；According to pass warm conductor intermediate portion present it is dull linear or close to linear TA~TBBetween
Temperature Distribution can be obtained:
(L-Li)/(Li+1-Li)=(TBenchmark-Ti)/(T i+1-Ti),
That is L=Li+ (Li+1-Li) × (TBenchmark-Ti)/(T i+1-Ti), then acquiring temperature on the warm conductor of biography is TBenchmarkDatum mark；
(5) trial product to be measured is placed in the warm conductor temperature of biography is TBenchmarkDatum mark on, get high-precision fiducial temperature, open
Begin starting calibration or testing process.
5. high-precision fiducial temperature acquisition methods as claimed in claim 4, it is characterised in that: the thermostatic equipment A and perseverance
The temperature accuracy D of warm equipment B an order of magnitude at least lower than required temperature accuracy.
6. high-precision fiducial temperature acquisition methods as described in claim 4 or 5, it is characterised in that: adjacent temperature sensor
Between spacing distance it is identical.
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| CN201811579570.5A CN109708780B (en) | 2018-12-24 | 2018-12-24 | High-precision reference temperature acquisition device and method thereof |
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| CN201811579570.5A CN109708780B (en) | 2018-12-24 | 2018-12-24 | High-precision reference temperature acquisition device and method thereof |
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