CN108387688A - Sensor calibration and gas detection method, device and equipment, readable storage medium storing program for executing - Google Patents
Sensor calibration and gas detection method, device and equipment, readable storage medium storing program for executing Download PDFInfo
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Abstract
A kind of sensor calibration of offer of the embodiment of the present invention and gas detection method, device and equipment, readable storage medium storing program for executing, the bearing calibration include：Obtain the multiple influence values exported after gas sensor preheating predetermined period；Determine the difference degree between acquired each influence value；If identified difference degree meets scheduled threshold value update condition, the average value of acquired each influence value is updated to the threshold value of the gas sensor.Implement the embodiment of the present invention, every time after gas sensor preheats predetermined period and starts, obtain multiple sensing values of gas sensor, and when the difference degree of acquired each influence value and its average value meets scheduled threshold value update condition, the average value of each influence value is updated to the threshold value of gas sensor, it is run with the startup of gas sensor, the threshold value of reflection gas sensor degree of aging can be obtained, and then effectively reduce negative effect of the gas sensor aging to gas detection result.
Description
Technical field
The present invention relates to field of sensing technologies more particularly to sensor calibration and gas detection method, device and equipment, can
Read storage medium.
Background technology
In order to improve the air quality in environment, many occasions can use the correlation of gas in gas sensor monitors environment
Information, specifically when monitoring, gas sensor can be converted into electric signal by gaseous species and its with concentration dependent information.So
Afterwards, these electric signals can be compared by relevant gas detecting system with threshold value, be obtained under test gas in the environment
There are the related information of situation, i.e. gas-monitoring as a result, type, concentration and the ingredient of such as gas.
But gas sensor is in use for some time, it, can due to it forms performance degradation of device itself etc.
The phenomenon that gas sensor aging can occur, the electric signal exported before the electric signal of the gas sensor output after aging and aging
Concrete numerical value have different, for the size of difference by being determined depending on the degree of aging of gas sensor, degree of aging is bigger,
Difference is also bigger, so that the accuracy for the gas detection result that relevant gas detecting system obtains is lower.
Invention content
In view of this, the embodiment of the present invention provides a kind of sensor calibration and gas detection method, device and equipment, readable
Storage medium, to solve the problems, such as that gas sensor aging causes gas detection result precision relatively low.
According to the first aspect of the invention, a kind of sensor calibration method, including step are provided：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, by being averaged for acquired each influence value
Value is updated to the threshold value of the gas sensor.
In one embodiment, the difference degree includes at least one of following：
Error amount, Error Absolute Value, variance yields, mean square deviation.
In one embodiment, the influence value is voltage value or current value.
In one embodiment, the method is further comprising the steps of：
After the threshold value for updating the gas sensor, in the gas sensor in running order period, every pre-
The fixed update period executes primary following first iterative operation：
Multiple influence values of the gas sensor output are obtained in real time；
Determine the difference degree between each influence value obtained in real time；
If identified difference degree meets the threshold value update condition, by being averaged for each influence value obtained in real time
Value, is updated to the threshold value of the gas sensor.
In one embodiment, if identified difference degree is unsatisfactory for the threshold value update condition, the method is also
Include the following steps；
The influence value of the predetermined number of the gas sensor output is obtained in real time, and executes following secondary iteration operation：
By vertical output sequence, sequentially with the instead preceding influence value obtained of the influence value obtained in real time；
Obtain the average value of the influence value after the influence value not substituted and replacement；
Redefine the difference degree between each influence value in the influence value after the influence value not substituted and replacement；
If the difference degree redefined meets the threshold value update condition, acquired average value is updated to institute
The threshold value of gas sensor is stated, and terminates the secondary iteration operation；
If the difference degree redefined meets the threshold value update condition, it is defeated that the gas sensor is obtained in real time
The influence value of the predetermined number gone out, and execute the secondary iteration operation.
According to the second aspect of the invention, a kind of gas detection method, including step are provided：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, by being averaged for acquired each influence value
Value is updated to the threshold value of the gas sensor；
It obtains the gas and turns influence value after sensor, and compare the influence value of acquisition and updated threshold value, obtain
Gas detection result.
According to the third aspect of the invention we, a kind of sensor calibration device is provided, including：
Influence value acquisition module, for obtaining the multiple influence values exported after gas sensor preheating predetermined period；
Difference determining module, for determining the difference degree between acquired each influence value；
Threshold value update module will be acquired for when identified difference degree meets scheduled threshold value update condition
The average value of each influence value be updated to the threshold value of the gas sensor.
According to the fourth aspect of the invention, a kind of gas-detecting device is provided, including：
Influence value acquisition module, for obtaining the multiple influence values exported after gas sensor preheating predetermined period；
Difference determining module, for determining the difference degree between acquired each influence value；
Threshold value update module will be acquired for when identified difference degree meets scheduled threshold value update condition
The average value of each influence value be updated to the threshold value of the gas sensor；
Gas detection module, for obtaining the influence value after the gas turns sensor, and compare the influence value of acquisition with
Updated threshold value obtains gas detection result.
According to the fifth aspect of the invention, a kind of terminal device is provided, including：
Processor；
Store the memory of processor-executable instruction；
Wherein, the processor is coupled in the memory, the program instruction for reading the memory storage, and makees
For response, the operation in sensor calibration method as described above is executed.
According to the sixth aspect of the invention, a kind of terminal device is provided, including：
Processor；
Store the memory of processor-executable instruction；
Wherein, the processor is coupled in the memory, the program instruction for reading the memory storage, and makees
For response, the operation in gas detection method as described above is executed.
According to the seventh aspect of the invention, one or more machine readable storage mediums are provided, instruction is stored thereon with, when
When being executed by one or more processors so that terminal device executes the operation in sensor calibration method as described above.
According to the eighth aspect of the invention, one or more machine readable storage mediums are provided, instruction is stored thereon with, when
When being executed by one or more processors so that terminal device executes the operation in gas detection method as described above.
Implement embodiment provided by the invention, every time after gas sensor preheats predetermined period and starts, obtains gas
Multiple sensing values of sensor, and meet scheduled threshold value in the difference degree of acquired each influence value and its average value and update
When condition, the average value of each influence value is updated to the threshold value of gas sensor, runs, can obtain with the startup of gas sensor
To the threshold value of reflection gas sensor degree of aging.
If the sensing after more updated threshold value and gas sensor is worth to gas detection as a result, can be in turn
Negative effect of the gas sensor aging to testing result itself is effectively reduced, gas detection accuracy is improved.
Description of the drawings
Fig. 1 is the flow chart of the sensor calibration method shown in an exemplary embodiment of the invention；
Fig. 2 is the flow chart of the sensor calibration method shown in another exemplary embodiment of the present invention；
Fig. 3 is the flow chart of the sensor calibration method shown in another exemplary embodiment of the present invention；
Fig. 4 is the flow chart of the gas detection method shown in an exemplary embodiment of the invention；
Fig. 5 is the block diagram of the sensor calibration device shown in an exemplary embodiment of the invention；
Fig. 6 is the block diagram of the gas-detecting device shown in an exemplary embodiment of the invention；
Fig. 7 is the hardware structure diagram of the terminal device shown in an exemplary embodiment of the invention.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
It is the purpose only merely for description specific embodiment in terminology used in the present invention, is not intended to limit the invention.
It is also intended to including majority in the present invention and "an" of singulative used in the attached claims, " described " and "the"
Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps
Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
The present embodiments relate to gas sensor (or be gas sensor), semiconductor-type gas sensing can be referred to
Device, catalytic combustion type gas sensor or electrochemical gas sensor etc..If gas sensor is placed in detecting head, monitoring
In equipment, smart home device or other gas detecting systems, it can be used for industry into fields such as production, communications and transportation, smart homes
Scape detects flammable, inflammable, toxic gas concentration or its presence or absence, or the consumption etc. of detection oxygen.
Gas detecting system is usually to pass the influence value (may also be referred to as electric signal) that gas sensor exports with gas
The threshold value of sensor is compared, and obtains gas detection result.Wherein, the threshold value of gas sensor is that gas sensor is initially put into
Using the threshold value of preceding acquisition, degree of aging that can not be in reaction gas sensor use, and gas sensor degree of aging is got over
Greatly, the difference of the electric signal exported before the electric signal (may also be referred to as influence value) of output and aging is also bigger.If relevant
Gas detecting system in application scenarios still will be unable to the threshold value of the sensor ageing degree of reaction gas and the gas of aging pass
The electric signal of sensor output is compared, it is likely that obtains the low-down gas detection result of accuracy.
User can be caused to ignore harmful components in scene without accurate gas detection result, so be likely to
Greater loss is caused at family, in view of this, the present invention provides a kind of sensor calibration methods, starts simultaneously in gas sensor every time
After preheating predetermined period, multiple sensing values of gas sensor are obtained, and in the difference of acquired each influence value and its average value
When off course degree meets scheduled threshold value update condition, the average value of each influence value is updated to the threshold value of gas sensor, with
The startup of gas sensor is run, and can obtain the threshold value of reflection gas sensor degree of aging.
In addition, the present invention also provides a kind of gas detection method, the detection method by comparing updated threshold value and
Sensing after gas sensor is worth to gas detection and is tied to detection as a result, gas sensor aging itself can be reduced effectively
The negative effect of fruit improves gas detection accuracy.Introduce the sensor school of the lower embodiment of the present invention respectively below in conjunction with attached drawing
Correction method and gas detection method.
Referring to Fig. 1, Fig. 1 is the flow chart of the sensor calibration method shown in an exemplary embodiment of the invention, the reality
It applies example to can be applied on terminal device, includes the following steps S101-S103：
Step S101, the multiple influence values exported after gas sensor preheating predetermined period are obtained.
Step S102, the difference degree between each influence value acquired in determining.
If step S103, identified difference degree meets scheduled threshold value update condition, by acquired each sense
The average value that should be worth is updated to the threshold value of the gas sensor.
The terminal device that the embodiment of the present application is applied can be that there are the various computers of sensor calibration function to set
It is standby, such as personal computer, laptop computer, smart mobile phone etc., can also be detecting head with gas detection function or
Environment monitoring equipment, smart home device equipped with gas detecting system or other computer equipments.
If gas sensor is fitted together with gas detecting system, the operation of the embodiment of the present invention can be examined by gas
Examining system executes.When needing detection gas, after gas detecting system powers on and opens gas detection function, in gas sensing
Also upper electric preheating, gas detecting system can start timing to device, and after timing reaches predetermined period, gas sensor launches into surely
Determine working condition, multiple influence values that gas sensor exports after gas detecting system can be reached by reception timing obtain
The gas sensor starts and preheats multiple influence values after predetermined period.Predetermined period mentioned herein can be with this programme
Designer or sensor production side, according to the type set of gas sensor, for making gas sensor reach stable state.
Such as it is set as 3 minutes, in other examples, other numerical value can also be set as, the embodiment of the present invention is without limitation.
In practical application, due to gas sensor type difference when, by gaseous species and its with concentration dependent information
The electric signal being converted into is also different, and the influence value is determined by the operation principle of gas sensor, can be that gas sensor is defeated
The current value gone out can also be the voltage value of gas sensor output.
In addition, updating efficiency to improve threshold value, multiple influence values that the embodiment of the present invention obtains, can be gas sensings
The influence value that device continuously exports, such as：30 influence values continuously exported in 30 seconds.In other examples, in order to make update
The degree of aging of threshold value energy reaction gas sensor within the longer period afterwards, can be from gas sensor in preheating predetermined period
And in a large amount of influence values exported after starting, discrete multiple influence values are selected, such as：120 inductions exported out of 2 minute
Discrete 60 influence values are selected in value.
If gas sensor is independently of isolated operation except gas detecting system, by its influence value to gas detecting system
It sends, the detection of supplied gas detecting system uses.The operation of the embodiment of the present invention can be led by other except gas detecting system
Body executes, such as personal computer, laptop computer, smart mobile phone equipment, gas sensor can be connect with these equipment.
These equipment can be ordered by sending, and control gas sensor preheating predetermined period simultaneously starts, and then can receive gas biography
The influence value that sensor is exported in preheating predetermined period and after starting, and the time for receiving influence value is recorded, it then can be from reception
Influence value in choose the multiple influence values continuously received.
For multiple influence values of acquisition, it is contemplated that when gas sensor degree of aging temporary stabilization, multiple senses of output
Should be worth in Stable distritation, the difference between each influence value in a certain range, so the embodiment of the present invention, and it is indirect will be acquired
The average value of multiple influence values be updated to sensor and be updated to threshold value, but it needs to be determined that between acquired multiple influence values
Difference degree within a predetermined range, that is, when meeting scheduled threshold value update condition, just by the average value of multiple influence values of acquisition
It is updated to the threshold value of gas sensor, so, the difference degree of each influence value of the threshold value update condition for that will obtain here
It limits within a predetermined range.
In one example, with the difference of each influence value and its average value of acquisition, carry out response difference degree, it can be by following
It operates to determine the difference degree between acquired each influence value：
Calculate the average value of acquired each influence value.
Calculate the difference of acquired each influence value and the average value.
Compare each difference for calculating gained and scheduled difference range.
If comparison result indicates each difference for calculating gained in the difference range, identified difference is judged
Degree meets the threshold value update condition.Difference range mentioned herein can be according to actual demand and the class of gas sensor
Type set, as influence value be voltage when, difference range is set as -0.2V to the numerical value between 0.2V.
In another example, with the variance of each influence value of acquisition, carry out response difference degree, it can be by following operation come really
Difference degree between fixed acquired each influence value：
Calculate the variance of each influence value；
If the variance is within the scope of scheduled variance, judge that identified difference degree meets the threshold value
Update condition.Variance range mentioned herein can be according to actual demand and the type set of gas sensor.
In another example, with the mean square deviation of each influence value of acquisition, carry out response difference degree, can by it is following operation come
Determine the difference degree between acquired each influence value：
Calculate the mean square deviation of each influence value；
If the mean square deviation is within the scope of scheduled mean square deviation, judge described in identified difference degree satisfaction
Threshold value update condition.Mean square deviation range mentioned herein can be according to actual demand and the type set of gas sensor.
In other examples, with other parameters the difference degree, such as the absolute value of difference, deviation can be reacted,
The difference degree can be reacted at least two in difference, variance, absolute difference, mean square deviation.
According to either type in above-described embodiment, determine that the difference degree between acquired each influence value meets the threshold value
When update condition, the average value of each influence value that can be acquired is updated to the threshold value of the gas sensor.
It is newer when due to the threshold value being gas sensor degree of aging temporary stabilization, so the threshold value can only reaction gas
Degree of aging in sensor limited period of time, if gas sensor is when the working time after updating threshold value is limited no more than this
Section, then before newer threshold value to a certain extent can be after the effecting reaction limited period of time degree of aging, be not necessarily to frequent updating
Threshold value carries out gas detection according to newer threshold value before.
If gas sensor updates the working time superelevation limited period of time after threshold value, degree of aging may reach more
High degree, before newer threshold value be difficult to the degree of aging after the effecting reaction limited period of time, according to newer threshold value before
The accuracy for carrying out the gas detection result obtained by gas detection has decline by a relatively large margin again, so, for updating threshold value
Gas sensor in running order for a long time afterwards, every the scheduled update period, it is necessary to execute primary acquisition institute in real time
The operation of multiple influence values of gas sensor output is stated, and determines the difference degree between each influence value obtained in real time；Institute
When determining difference degree meets the threshold value update condition, the average value of each influence value obtained in real time is updated to described
The threshold value of gas sensor.Referring specifically to Fig. 2, sensor calibration method shown in Fig. 2 can be applied to terminal device, including with
Lower step S201-S206：
Step S201, start after control gas sensor preheating predetermined period.
Step S202, multiple influence values of the gas tactility apparatus output are obtained.
Step S203, the difference degree between each influence value acquired in determining.
If step S204, identified difference degree meets scheduled threshold value update condition, by acquired each sense
The average value that should be worth is updated to the threshold value of the gas sensor.
Step S205, the operating time of gas sensor described in start recording.
Step S206, judge whether the operating time of record reaches the scheduled update period, if reached, return to step
S202, if not up to the scheduled update period when, terminate working condition, then stop correct sensor operation.
The present embodiments relate to content it is corresponding to the content in the embodiment that Fig. 1 is related to, details are not described herein.
The update period that the embodiment of the present invention is mentioned can set according to the type of gas sensor and actual demand,
Such as it is set as 10 minutes.
In certain scenes, the embodiment involved by embodiment or Fig. 2 involved by either Fig. 1, if determined
Difference degree be unsatisfactory for the threshold value update condition, for example, calculate any difference not in scheduled difference range, or
The variance of calculating either mean square deviation not within the scope of scheduled variance range or mean square deviation, it is possible to determine that identified difference
Degree is unsatisfactory for the threshold value update condition.
For the situation for being unsatisfactory for the threshold value update condition, the embodiment of the present invention can obtain the gas sensing in real time
The influence value of the predetermined number of device output, and execute following iterative operation：
By vertical output sequence, sequentially with the instead preceding influence value obtained of the influence value obtained in real time；
Redefine the difference degree between each influence value in the influence value after the influence value not substituted and replacement.
Redefine the difference degree between each influence value in the influence value after the influence value not substituted and replacement.
If the difference degree redefined meets the threshold value update condition, acquired average value is updated to institute
The threshold value of gas sensor is stated, and terminates the secondary iteration operation.
If the difference degree redefined meets the threshold value update condition, it is defeated that the gas sensor is obtained in real time
The influence value of the predetermined number gone out, and execute the iterative operation.
Under certain scenes, concrete implementation process may refer to Fig. 3, and sensor calibration method shown in Fig. 3 can be applied
In terminal device, including following step S301-S311：
Step S201, start after control gas sensor preheating predetermined period.
Step S302, multiple influence values of the gas tactility apparatus output are obtained.
Step S303, the difference degree between each influence value acquired in determining.
Step S304, whether difference degree determined by judgement meets scheduled threshold value update condition, if it is satisfied, then holding
Row step S305, if conditions are not met, thening follow the steps S306.
Step S305, the average value of multiple influence values of acquisition is updated to the threshold value of the gas sensor.
Step S306, the influence value of the predetermined number of the gas sensor output is obtained.
Step S307, vertical output sequence is pressed, sequentially with the instead preceding induction obtained of the influence value obtained again
Value.
Step S308, the average value of the influence value after the influence value not substituted and replacement is obtained.
Step S309, the difference journey between each influence value in the influence value after the influence value not substituted and replacement is redefined
Degree.
Step S310, judge whether the difference degree redefined meets the threshold value update condition, held if meeting
Row step S311, the return to step S306 if being unsatisfactory for.
Step S311, acquired average value is updated to the threshold value of the gas sensor.
In the embodiment of the present invention, influence value is obtained, difference degree is determined, judges whether difference degree meets the threshold value more
The content of New Terms, corresponding to the content in the embodiment that Fig. 1 or Fig. 2 are related to, details are not described herein.
For step S306, the predetermined number can be numerical value 1, or other numerical value, such as 30, it specifically can root
It is set according to actual scene demand.
For step S307, with the influence value newly obtained, when substituting old influence value, when can be according to the output of influence value
Between or receiving time, be temporally worth sequence from small to large and determine the old influence value substituted.
It, can be with by above-described embodiment it is found that the present invention program is every time after gas sensor preheats predetermined period and starts
Multiple sensing values of gas sensor are obtained, and are met in the difference degree of acquired each influence value and its average value scheduled
When threshold value update condition, the average value of each influence value is updated to the threshold value of gas sensor, with the startup of gas sensor
Operation can obtain the threshold value of reflection gas sensor degree of aging.
After updating threshold value, the equipment equipped with gas detecting system can more updated threshold value and gas sensing
Sensing after device is worth to gas detection as a result, effectively reducing negative shadow of the gas sensor aging to testing result itself
It rings, improves gas detection accuracy.Specific detection process may refer to Fig. 4, gas detection method shown in Fig. 4, Ke Yiying
For in the equipment equipped with gas detecting system, including the following steps S401-S404：
Step S401, the multiple influence values exported after gas sensor preheating predetermined period are obtained.
Step S402, the difference degree between each influence value acquired in determining.
If step S403, identified difference degree meets scheduled threshold value update condition, by acquired each sense
The average value that should be worth is updated to the threshold value of the gas sensor.
Step S404, obtain the gas and turn the influence value after sensor, and compare the influence value of acquisition with it is updated
Threshold value obtains gas detection result.
The present embodiments relate to content it is corresponding to the content that any embodiment is related in Fig. 1 to 3, it is no longer superfluous herein
It states.
The gas detection that the embodiment of the present invention obtains is as a result, can be type, concentration and ingredient of gas etc..
For step S404, the operation that gas detection result is specifically taken is obtained, it can be by the type of gas sensor
Or it is expected that the gas data (type, concentration and the ingredient of such as gas) of detection determines that details are not described herein.
In other examples, the gas detection method of the embodiment of the present invention, can also be in any reality that Fig. 1 to Fig. 3 is related to
It after applying example update threshold value, obtains the gas and turns influence value after sensor, and compare the influence value of acquisition and updated threshold
Value, obtains gas detection result.
Corresponding with the embodiment of preceding method, the present invention also provides the embodiments of device.
It is the block diagram of the gas sensor means for correcting shown in an exemplary embodiment of the invention, the dress referring to Fig. 5, Fig. 5
It sets and can be applied to terminal device, including：Influence value acquisition module 510, difference determining module 520 and threshold value update module 530.
Wherein, influence value acquisition module 510, for obtaining the multiple inductions exported after gas sensor preheating predetermined period
Value.
Difference determining module 520, for determining the difference degree between acquired each influence value.
Threshold value update module 530, for when identified difference degree meets scheduled threshold value update condition, will be obtained
The average value of each influence value taken is updated to the threshold value of the gas sensor.
In some examples, the difference degree includes at least one of following：
Error amount, Error Absolute Value, variance yields, mean square deviation.
In other examples, the influence value is voltage value or current value.
In other examples, the gas sensor means for correcting of the present embodiment can also include：
First iteration module is used for after the threshold value for updating the gas sensor, and the gas sensor is in work
During making state, every the scheduled update period, primary following first iterative operation is executed：
Multiple influence values of the gas sensor output are obtained in real time；
Determine the difference degree between each influence value obtained in real time；
If identified difference degree meets the threshold value update condition, by being averaged for each influence value obtained in real time
Value, is updated to the threshold value of the gas sensor.
In other examples, the gas sensor means for correcting of the present embodiment can also include：
Secondary iteration module, for when identified difference degree is unsatisfactory for the threshold value update condition, obtaining in real time
The influence value of the predetermined number of the gas sensor output, and execute following secondary iteration operation：
By vertical output sequence, sequentially with the instead preceding influence value obtained of the influence value obtained in real time；
Obtain the average value of the influence value after the influence value not substituted and replacement；
Redefine the difference degree between each influence value in the influence value after the influence value not substituted and replacement；
If the difference degree redefined meets the threshold value update condition, acquired average value is updated to institute
The threshold value of gas sensor is stated, and terminates the secondary iteration operation；
If the difference degree redefined meets the threshold value update condition, it is defeated that the gas sensor is obtained in real time
The influence value of the predetermined number gone out, and execute the secondary iteration operation.
It is the block diagram of the gas-detecting device shown in an of the invention exemplary embodiment referring to Fig. 6, Fig. 6, which can be with
Applied to the terminal device with gas detection function, including：Influence value acquisition module 610, difference determining module 620, threshold value
Update module 630 and gas detection module 640.
Wherein, influence value acquisition module 610, for obtaining the multiple inductions exported after gas sensor preheating predetermined period
Value.
Difference determining module 620, for determining the difference degree between acquired each influence value.
Threshold value update module 630, for when identified difference degree meets scheduled threshold value update condition, will be obtained
The average value of each influence value taken is updated to the threshold value of the gas sensor.
Gas detection module 640 for obtaining the influence value after the gas turns sensor, and compares the influence value of acquisition
With updated threshold value, gas detection result is obtained.
The influence value acquisition module 610, difference determining module 620 and threshold value update module 630 of the present embodiment, respectively and scheme
The content of 5 embodiments being related to is corresponding, and details are not described herein.
The function of each unit (or module) and the realization process of effect specifically refer to right in the above method in above-mentioned apparatus
The realization process of step is answered, details are not described herein.
For device embodiments, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separating component
The unit or module of explanation may or may not be physically separated, and the component shown as unit or module can be with
It is or may not be physical unit or module, you can be located at a place, or may be distributed over multiple network lists
In member or module.Some or all of module therein can be selected according to the actual needs to realize the mesh of the present invention program
's.Those of ordinary skill in the art are without creative efforts, you can to understand and implement.
The embodiment of inventive sensor means for correcting and/or gas-detecting device can be applied on the terminal device.Tool
Body can be realized by computer chip or entity, or be realized by the product with certain function.In the typical realization of one kind,
Terminal device is computer, and the concrete form of computer can be personal computer, laptop computer, smart phone, navigation
It is arbitrary in equipment, E-mail receiver/send equipment, game console, tablet computer, smart home device or these equipment
The combination of several equipment.
Device embodiment can also be realized by software realization by way of hardware or software and hardware combining.With
For software realization, as the device on a logical meaning, being will be non-volatile by the processor of electronic equipment where it
Corresponding computer program instructions read what operation in memory was formed in the readable storage medium storing program for executing such as memory.From hardware view
Speech, as shown in fig. 7, for a kind of hardware knot of terminal device where inventive sensor means for correcting and/or gas-detecting device
Composition, other than processor shown in Fig. 7, memory, network interface and nonvolatile memory, device institute in embodiment
Terminal device generally according to the terminal device actual functional capability, can also include other hardware, this is repeated no more.Its
In, memory and nonvolatile memory are computer-readable memories, and the memory of terminal device can store processor can
The program instruction of execution；Processor can with coupled memory,
In one embodiment, the processor is used to read the program instruction of the storage medium storage, and in response,
Execute following operation：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, by being averaged for acquired each influence value
Value is updated to the threshold value of the gas sensor.
In another embodiment, the processor is used to read the program instruction of the storage medium storage, and as sound
It answers, executes following operation：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, by being averaged for acquired each influence value
Value is updated to the threshold value of the gas sensor；
It obtains the gas and turns influence value after sensor, and compare the influence value of acquisition and updated threshold value, obtain
Gas detection result.
In other embodiments, the operation performed by processor can refer to sensor calibration method described above and/or
Relevant description in the embodiment of gas detection method, it will not be described here.
In addition, the embodiment of the present invention also provides a kind of machine readable storage medium (or memory for terminal device),
Have program stored therein instruction in the readable storage medium storing program for executing, and described program instruction includes above institute's sensor calibration method and/or gas
The corresponding instruction of each step of body detecting method.When executed by one or more processors so that more than terminal device executes
The operation of the sensor calibration method and/or gas detection method.
The embodiment of the present invention can be used one or more wherein include program code readable storage medium storing program for executing (including but
Be not limited to magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.Computer is available
Readable storage medium storing program for executing includes permanent and non-permanent, removable and non-removable media, can by any method or technique Lai
Realize information storage.Information can be computer-readable instruction, data structure, the module of program or other data.It is machine readable
The example of storage medium includes but not limited to：Phase transition internal memory (PRAM), static RAM (SRAM), dynamic random are deposited
Access to memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electrically erasable are only
Read memory (EEPROM), fast flash memory bank or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM), the more work(of number
Can CD (DVD) or other optical storages, magnetic tape cassette, tape magnetic disk storage or other magnetic storage apparatus or it is any its
His non-transmission medium, can be used for storing and can be accessed by a computing device information.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.
Claims (12)
1. a kind of sensor calibration method, which is characterized in that including step：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, more by the average value of acquired each influence value
It is newly the threshold value of the gas sensor.
2. according to the method described in claim 1, it is characterized in that, the difference degree includes at least one of following：
Difference, the absolute value of difference, variance yields, mean square deviation.
3. according to the method described in claim 1, it is characterized in that, the influence value is voltage value or current value.
4. according to the method described in claim 1, it is characterized in that, the method is further comprising the steps of：
After the threshold value for updating the gas sensor, in the gas sensor in running order period, every it is scheduled more
The new period executes primary following first iterative operation：
Multiple influence values of the gas sensor output are obtained in real time；
Determine the difference degree between each influence value obtained in real time；
If identified difference degree meets the threshold value update condition, by the average value of each influence value obtained in real time,
It is updated to the threshold value of the gas sensor.
5. method according to claim 1 to 4, which is characterized in that if identified difference degree is discontented
The foot threshold value update condition, the method are further comprising the steps of；
The influence value of the predetermined number of the gas sensor output is obtained in real time, and executes following secondary iteration operation：
By vertical output sequence, sequentially with the instead preceding influence value obtained of the influence value obtained in real time；
Obtain the average value of the influence value after the influence value not substituted and replacement；
Redefine the difference degree between each influence value in the influence value after the influence value not substituted and replacement；
If the difference degree redefined meets the threshold value update condition, acquired average value is updated to the gas
The threshold value of body sensor, and terminate the secondary iteration operation；
If the difference degree redefined meets the threshold value update condition, the gas sensor output is obtained in real time
The influence value of predetermined number, and execute the secondary iteration operation.
6. a kind of gas detection method, which is characterized in that including step：
Obtain the multiple influence values exported after gas sensor preheating predetermined period；
Determine the difference degree between acquired each influence value；
If identified difference degree meets scheduled threshold value update condition, more by the average value of acquired each influence value
It is newly the threshold value of the gas sensor；
It obtains the gas and turns influence value after sensor, and compare the influence value of acquisition and updated threshold value, obtain gas
Testing result.
7. a kind of sensor calibration device, which is characterized in that including：
Influence value acquisition module, for obtaining the multiple influence values exported after gas sensor preheating predetermined period；
Difference determining module, for determining the difference degree between acquired each influence value；
Threshold value update module will be acquired each for when identified difference degree meets scheduled threshold value update condition
The average value of influence value is updated to the threshold value of the gas sensor.
8. a kind of gas-detecting device, which is characterized in that including：
Influence value acquisition module, for obtaining the multiple influence values exported after gas sensor preheating predetermined period；
Difference determining module, for determining the difference degree between acquired each influence value；
Threshold value update module will be acquired each for when identified difference degree meets scheduled threshold value update condition
The average value of influence value is updated to the threshold value of the gas sensor；
Gas detection module for obtaining the influence value after the gas turns sensor, and compares influence value and the update of acquisition
Threshold value afterwards obtains gas detection result.
9. a kind of terminal device, which is characterized in that including：
Processor；
Store the memory of processor-executable instruction；
Wherein, the processor is coupled in the memory, the program instruction for reading the memory storage, and as sound
It answers, executes such as the operation in any one of claim 1-5 the method.
10. a kind of terminal device, which is characterized in that including：
Processor；
Store the memory of processor-executable instruction；
Wherein, the processor is coupled in the memory, the program instruction for reading the memory storage, and as sound
It answers, executes the operation in method as claimed in claim 6.
11. one or more machine readable storage mediums, which is characterized in that instruction is stored thereon with, when by one or more
When managing device execution so that terminal device is executed such as the operation in any one of claim 1-5 the method.
12. one or more machine readable storage mediums, which is characterized in that instruction is stored thereon with, when by one or more
When managing device execution so that terminal device executes the operation in method as claimed in claim 6.
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| CN108387688B (en) | 2021-02-09 |
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