CN102507650A - Method and system for testing parameters of gas-sensitive element - Google Patents
Method and system for testing parameters of gas-sensitive element Download PDFInfo
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- CN102507650A CN102507650A CN2011102947680A CN201110294768A CN102507650A CN 102507650 A CN102507650 A CN 102507650A CN 2011102947680 A CN2011102947680 A CN 2011102947680A CN 201110294768 A CN201110294768 A CN 201110294768A CN 102507650 A CN102507650 A CN 102507650A
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Abstract
The invention discloses a method and system for testing parameters of a gas-sensitive element. The method comprises the following steps of: simulating a working environment of the gas-sensitive element, and outputting an analogue voltage signal obtained through conversion from gas information in a sensing environment; carrying out analogue-digital conversion on the analogue voltage signal so as to convert the analogue voltage signal into a digital signal; analyzing and calculating the digital signal to obtain test parameters of the gas-sensitive element; and dynamically displaying the test parameters of the gas-sensitive element in text and graph manners. According to the method or system for testing the parameters of the gas-sensitive element, the parameters of the gas-sensitive element can be auxiliarily tested in combination with a computer, so that the complicated operation and calculation processing can be changed into intelligent processing through the computer, therefore the development and production efficiency of the gas-sensitive element is improved, and the manpower and material costs are decreased in the test process.
Description
Technical field
The present invention relates to field tests, in particular, relate to a kind of method and system of gas sensor parameter testing.
Background technology
Gas sensor is a kind of element that detects specific gas; The main application has: the detection of ethanol and the detection of human oral cavity halitosis etc. in the detection of the detection of CO gas, the detection of methane gas, coal gas, the detection of freon, the expiration; It becomes electric signal with gaseous species and concentration dependent information translation thereof; Just can obtain in environment, to have the relevant information of situation according to the power of these electric signal, thereby can detect, monitor and report to the police with gas to be measured; Can also form automatic detection, control and warning system through interface circuit and computing machine, so parameter testings such as the sensitivity of gas sensor are very important to the quality of gas sensor.
At present; In the research and production of gas sensor, need carry out a large amount of tests and calculating to the parameter of gas sensor, and these work major parts are repetitions and loaded down with trivial details; These need of work manual works go to accomplish; The staff is in loaded down with trivial details data test, analysis and the calculating, and the poor efficiency of processing mode has restricted the exploitation and the production of gas sensor to a great extent, makes that also gas sensor parameter test method cost consumption on the man power and material is excessive in the prior art.
Summary of the invention
In view of this, the invention provides a kind of gas sensor parameter test method and system, to overcome in the prior art since the extensive work of parameter testing analyze and calculate by manual work, the exploitation of the poor efficiency restriction gas sensor of processing mode and the problem of production.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of method of gas sensor parameter testing, this method comprises:
The working environment of simulation gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
Said analog voltage signal is carried out analog to digital conversion, said analog voltage signal is converted into digital signal;
Said digital signal is analyzed and calculated, to obtain the test parameter of said gas sensor.
Wherein, said analog voltage signal comprises: the humiture voltage signal of the gas sensor voltage signal that the environmental information of said gas sensor perception is converted and temperature, humidity sensor conversion.
Wherein, said said modulus voltage signal is carried out analog to digital conversion, said analog voltage signal is converted into digital signal comprises:
Said analog voltage signal is carried out signal transformation, output demodulation and filtered voltage signal;
The A/D analog to digital conversion circuit is passed through in said demodulation and filtered voltage signal, convert digital signal into.
Wherein, this method also comprises:
The test parameter of said gas sensor is shown with literal, figure dynamically.
Wherein, said said digital signal analyzed and calculated, comprise with the test parameter that obtains said gas sensor:
In said digital signal input processor, carry out reacting value calculating, sensitivity calculations, response time calculating, element stepping and calculating release time, thereby obtain the test parameter of said gas sensor.
A kind of system of gas sensor parameter testing comprises:
Test Host is used to simulate the working environment of gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
Data conversion module is used for said analog voltage signal is carried out analog to digital conversion, converts said analog voltage signal into digital signal;
Processor is used to install supporting testing software, said digital signal is analyzed and is calculated, to obtain the test parameter of said gas sensor.
Wherein, the analog voltage signal of said Test Host output is the gas sensor voltage signal and humiture voltage signal warm, that humidity sensor transforms that gas information is converted in the said gas sensor perception environment.
Wherein, said data conversion module comprises:
Signal conversion circuit is used for said analog voltage signal is carried out signal transformation, output demodulation and filtered voltage signal;
The A/D analog to digital conversion circuit is used for converting said demodulation and filtered voltage signal into digital signal.
Wherein, this system also comprises:
The test result display module is used for the test parameter of said gas sensor is shown with literal, figure dynamically.
Wherein, said processor comprises:
The reacting value computing module is used to calculate the numerical value that reaction is obtained;
The sensitivity calculations module is used for calculating sensor sensitivity;
The response time computing module is used for the calculating sensor response time;
Element stepping module is used for according to the parameter of setting the demonstration of classifying of a batch testing sensor;
Release time, computing module was used for calculating sensor release time.
Can know via above-mentioned technical scheme; Compared with prior art; The invention discloses a kind of method and system of gas sensor parameter testing, can combine computer-aided test gas sensor parameter, change troublesome operation and computing into computing machine and carry out intellectuality and handle; Improve the exploitation and the production efficiency of gas sensor, also made simultaneously manpower and the reduction of material resources cost in test process.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is the process flow diagram of the method for the disclosed a kind of gas sensor test of the embodiment of the invention;
Fig. 2 is the process flow diagram of the method for the disclosed another kind of gas sensor test of the embodiment of the invention;
Fig. 3 is system's picture group of the disclosed a kind of gas sensor test of the embodiment of the invention;
Fig. 4 is the concrete picture group of the disclosed a kind of gas sensor parameter test system of the embodiment of the invention;
Fig. 5 is the concrete picture group in the production of the disclosed a kind of gas sensor parameter test system of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also accompanying drawing 1, be the process flow diagram of the method for a kind of gas sensor test disclosed by the invention.
Step 101: the working environment of simulation gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
According to sensor type modelled signal Acquisition Circuit; Process sensor test plate (grafting sensor), make test board (for test board provides connector and condition of work such as voltage is provided), be furnished with special-purpose air chest on the test board according to test board specification and sensor signal characteristic; Through the vacuum rubber sealing gas tank build-in test gas is isolated from the outside; Be one and make that the cuboid container that volume is known is that configuration certain concentration gas uses with organic glass; Be provided with temperature sensing device, humidity sensing device in the air chest, can monitor the temperature inside the box, humidity in real time; Also have gas injection, stirring, exhaust apparatus, reflect, simulate, control gas sensor environmental aspect on every side more really; The heating arrangement of evaporator during as tracer liquid steam, making liquid evaporation is gas.
Data acquisition module is inserted in the idle PCI slot of adapted processor; Fixing intact, Test Host is placed on the smooth worktable of firmly being convenient to operate, connect Test Host data port and processor data acquisition module data port with subsidiary at random communication cable; The Test Host power supply is inserted in the satisfactory supply socket; Open the power switch on the panel, panel shows gas sensor heating voltage and loop voltage, regulates the correspondent voltage adjusting knob and obtains the test voltage condition; According to container volume; Dispose the gas of certain concentration on request, in test panel, select feeler switch to begin test, handle the data that test obtains; Through regulating knob and the on & off switch on the test board control panel; Gas in test loop WV, heating circuit WV and the air chest is regulated, and data acquisition module is accepted the analog voltage signal that gas information is converted in the perception environment, wherein the analog voltage signal humiture voltage signal that to be the gas sensor voltage signal that is converted of the environmental information of gas sensor perception transform with temperature, humidity sensor.
According to above-mentioned content, the gas sensor that the present invention can be used for detecting comprises but is not limited to detect semiconductor type, galvanochemistry class, infrared type of gas sensor, can design single batch of test quantity by software and hardware configuration.
Step 102: said analog voltage signal is carried out analog to digital conversion, said analog voltage signal is converted into digital signal;
Test board with the analog voltage signal process data conversion module that collects, carries out analog to digital conversion to analog voltage signal through data collecting card, and analog voltage signal is converted into digital signal.
Step 103: said digital signal is analyzed and calculated, to obtain the test parameter of said gas sensor.
In said digital signal input processor, carry out reacting value calculating, sensitivity calculations, calculate between seasonable, element stepping and calculating release time, thereby obtain the test parameter of said gas sensor.Embedded software in the processor comes out information exhibition with the interface form, realizes various operations through windows system.
Present embodiment can combine computer-aided test gas sensor parameter; Changing troublesome operation and computing into computing machine carries out intellectuality and handles; Improve the exploitation and the production efficiency of gas sensor, also made simultaneously manpower and the reduction of material resources cost in test process.
On the basis of the disclosed embodiment of the invention described above, to consult shown in the accompanying drawing 2, the further process flow diagram for the method for a kind of gas sensor test disclosed by the invention is applied to the test of gas sensor parameter, and this method can also comprise:
Step 201: the working environment of simulation gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
This step is identical with the step 101 of last embodiment, and particular content has here just repeated no more referring to the detailed description of step 101.
Step 202: said analog voltage signal is carried out signal transformation, output demodulation and filtered voltage signal;
Signal conversion circuit; Be used for analog voltage signal is carried out signal transformation; Output demodulation and filtered voltage signal; The analog voltage signal that the perception environmental information is converted is for instability and be doped with some unwanted signal ripples, so will separate mediation filtering to resulting analog voltage signal through signal conversion circuit, obtains testing needed voltage signal.
Step 203: the A/D analog to digital conversion circuit is passed through in said demodulation and filtered voltage signal, convert digital signal into;
The A/D analog to digital conversion circuit; Be used for converting demodulation and filtered voltage signal into digital signal; Be input to and analyze in the processor and calculate, processor can not be handled simulating signal, so will design an A/D analog to digital conversion circuit; With analog signal conversion is the digital signal that processor can be discerned, and then it is analyzed and calculates.
Step 204: said digital signal is analyzed and calculated, to obtain the test parameter of said gas sensor;
In said digital signal input processor, carry out reacting value calculating, sensitivity calculations, response time calculating, element stepping and calculating release time, thereby obtain the test parameter of said gas sensor.Embedded software in the processor machine comes out information exhibition with the interface form, realizes various operations through windows system.
Step 205: the test parameter of said gas sensor is shown with literal, figure dynamically.
The test parameter of gas sensor is shown on the interface with literal, the dynamic computer man-machine interacting of figure.
Present embodiment can combine computer-aided test gas sensor parameter; Changing troublesome operation and computing into computing machine carries out intellectuality and handles; Improved the exploitation and the production efficiency of gas sensor, also made simultaneously manpower and the reduction of material resources cost in test process, present embodiment add the computer man-machine interacting interface test parameter of gas sensor is shown with literal, figure dynamically; More intuitively parameter is shown, be convenient to the analysis and the classification of data.
Describe method in detail among the disclosed embodiment of the invention described above, can adopt the system of various ways to realize, therefore the invention also discloses a kind of system of gas sensor parameter testing, provide concrete embodiment below and be elaborated for method of the present invention.
The embodiment of the invention also discloses a kind of system of gas sensor parameter testing, see also accompanying drawing 3, be system's picture group of the disclosed a kind of gas sensor test of the embodiment of the invention; Comprise: Test Host (301) is used to simulate the working environment of gas sensor, the analog voltage signal that gas information is converted in the output perception environment; Data conversion module (302) is used for said analog voltage signal is carried out analog to digital conversion, converts said analog voltage signal into digital signal; Processor (303) is used to install supporting testing software, said digital signal is analyzed and is calculated, to obtain the test parameter of said gas sensor.
Present embodiment can combine computer-aided test gas sensor parameter; Changing troublesome operation and computing into computing machine carries out intellectuality and handles; Improve the exploitation and the production efficiency of gas sensor, also made simultaneously manpower and the reduction of material resources cost in test process.
See also accompanying drawing 4, be the concrete picture group of gas sensor parameter test system disclosed by the invention; Wherein, data conversion module (402) comprising: signal conversion circuit (405) is used for said analog voltage signal is carried out signal transformation output demodulation and filtered voltage signal; A/D analog to digital conversion circuit (406) is used for converting said demodulation and filtered voltage signal into digital signal.Processor module (403) comprising: reacting value computing module (407) is used to calculate the numerical value that reaction is obtained; Sensitivity calculations module (408) is used to calculate gas sensor sensitivity; Response time computing module (409) is used to calculate the gas sensor response time; Element stepping module (410) is used for according to the parameter of setting the demonstration of classifying of a batch test gas sensor; Computing module release time (411) is used to calculate gas sensor release time.
This system is based on the test to gas sensor parameter of software and hardware in one; See also accompanying drawing 5; Be the concrete picture group in the production of a kind of gas sensor parameter test system disclosed by the invention, hardware designs comprises: Test Host hardware (501) (power supply, air distributing device (504), mixing arrangement (505), vaporising device (506), temperature sensing device (507), humidity sensing device (508)), A/D change-over circuit (502), PC (503).Software design comprises: family curve computing machine display module, family curve enlarged and displayed module, gas sensor reacting value computing module, gas sensor sensitivity calculations module, response time computing module, element stepping module, release time, computing module, test result were preserved print module.
The air chest inner sensor socket of Test Host (501) inserts the gas sensor test board of setting; Air chest is sealed; Charge into test gas; Opening power; Import the data-signal cable of analog voltage signal through special use of test into data conversion module (502), convert the voltage signal of simulating into digital signal, by telecommunication cable digital signal is input in CPU (513), storer (514) and the input-output device (515) of processor (503) through I/O mouth (512) again through signal conversion circuit (510) and analog to digital conversion circuit (511); Analyze, calculate and store at processor embedded software and special-purpose display module, and the parameter testing result is exported through input-output device.
The test macro basic function comprises the multiple parameter of the gas sensor of required detection in experiment and the production run, as: the resistance in the aerial resistance of gas sensor, the appearance gas atmosphere, output voltage values, sensitivity, response time, release time etc.Simultaneously, software through the operation of mouse to button, gets final product the family curve of display element with the virtual gas sensor of button.
When producing gas sensor in batches, will carry out category filter to every batch of element, this system can classify to sensor according to sorting condition, scope that the user sets, and classification results shows with the various colors image, and is very directly perceived.The user can preserve, print the data that obtain, and data available software handles, and generates various abundanter material of picture and text.
In sum: this area of computer aided gas sensor parameter test system, can improve accuracy, the convenience of gas sensor parameter testing, the staff is freed from loaded down with trivial details data test, analysis, calculating.This system is through producing and actual uses of R&D institution, the usability of its function, and reliability and stability have all obtained sufficient sure, have promotional value widely.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
For the disclosed system of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the method for a gas sensor parameter testing is characterized in that, this method comprises:
The working environment of simulation gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
Said analog voltage signal is carried out analog to digital conversion, said analog voltage signal is converted into digital signal;
Said digital signal is analyzed and calculated, to obtain the test parameter of said gas sensor.
2. method according to claim 1 is characterized in that, said analog voltage signal comprises: the humiture voltage signal of the gas sensor voltage signal that the environmental information of said gas sensor perception is converted and temperature, humidity sensor conversion.
3. method according to claim 1 is characterized in that, said said modulus voltage signal is carried out analog to digital conversion, said analog voltage signal is converted into digital signal comprises:
Said analog voltage signal is carried out signal transformation, output demodulation and filtered voltage signal;
The A/D analog to digital conversion circuit is passed through in said demodulation and filtered voltage signal, convert digital signal into.
4. method according to claim 1 is characterized in that, this method also comprises:
The test parameter of said gas sensor is shown with literal, figure dynamically.
5. method according to claim 1 is characterized in that, said said digital signal is analyzed and calculated, and comprises with the test parameter that obtains said gas sensor:
In said digital signal input processor, carry out reacting value calculating, sensitivity calculations, response time calculating, element stepping and calculating release time, thereby obtain the test parameter of said gas sensor.
6. the system of a gas sensor parameter testing is characterized in that, comprising:
Test Host is used to simulate the working environment of gas sensor, the analog voltage signal that gas information is converted in the output perception environment;
Data conversion module is used for said analog voltage signal is carried out analog to digital conversion, converts said analog voltage signal into digital signal;
Processor is used to install supporting testing software, said digital signal is analyzed and is calculated, to obtain the test parameter of said gas sensor.
7. system according to claim 6; It is characterized in that the analog voltage signal of said Test Host output is the gas sensor voltage signal and humiture voltage signal warm, that humidity sensor transforms that gas information is converted in the said gas sensor perception environment.
8. system according to claim 6 is characterized in that, said data conversion module comprises:
Signal conversion circuit is used for said analog voltage signal is carried out signal transformation, output demodulation and filtered voltage signal;
The A/D analog to digital conversion circuit is used for converting said demodulation and filtered voltage signal into digital signal.
9. system according to claim 6 is characterized in that, this system also comprises:
The test result display module is used for the test parameter of said gas sensor is shown with literal, figure dynamically.
10. system according to claim 6 is characterized in that, said processor comprises:
The reacting value computing module is used to calculate the numerical value that reaction is obtained;
The sensitivity calculations module is used for calculating sensor sensitivity;
The response time computing module is used for the calculating sensor response time;
Element stepping module is used for according to the parameter of setting the demonstration of classifying of a batch testing sensor;
Release time, computing module was used for calculating sensor release time.
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| CN105388187A (en) * | 2015-11-13 | 2016-03-09 | 大连民族大学 | Measuring method of humidity-controllable semiconductor gas sensitive element |
| CN106377906A (en) * | 2016-08-24 | 2017-02-08 | 广东乐博士教育装备有限公司 | Intelligent electronic brick signal generation and adjusting method and hardware module thereof |
| CN107643368A (en) * | 2017-09-15 | 2018-01-30 | 深圳市卡普瑞环境科技有限公司 | A kind of sensor sensitivity factor acquisition method and terminal device |
| CN108897268A (en) * | 2018-07-02 | 2018-11-27 | 深圳市佳运通电子有限公司 | Heating furnace fault diagnosis system |
| CN113109516A (en) * | 2021-04-21 | 2021-07-13 | 江南大学 | Humidity sensor response and recovery time measuring device and method |
| CN113252734A (en) * | 2021-06-22 | 2021-08-13 | 电子科技大学 | Resistance type gas sensor flexible circuit and gas concentration calculation method |
| CN114388905A (en) * | 2021-12-16 | 2022-04-22 | 上万清源智动车有限公司 | Novel battery box battery leakage sensor model selection method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105388187A (en) * | 2015-11-13 | 2016-03-09 | 大连民族大学 | Measuring method of humidity-controllable semiconductor gas sensitive element |
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| CN108897268A (en) * | 2018-07-02 | 2018-11-27 | 深圳市佳运通电子有限公司 | Heating furnace fault diagnosis system |
| CN113109516A (en) * | 2021-04-21 | 2021-07-13 | 江南大学 | Humidity sensor response and recovery time measuring device and method |
| CN113252734A (en) * | 2021-06-22 | 2021-08-13 | 电子科技大学 | Resistance type gas sensor flexible circuit and gas concentration calculation method |
| CN113252734B (en) * | 2021-06-22 | 2021-09-24 | 电子科技大学 | Resistance type gas sensor flexible circuit and gas concentration calculation method |
| CN114388905A (en) * | 2021-12-16 | 2022-04-22 | 上万清源智动车有限公司 | Novel battery box battery leakage sensor model selection method |
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Application publication date: 20120620 |