CN109634189A - A kind of sensor Delay failure system and its control method for motor-vehicle tail-gas detection - Google Patents
A kind of sensor Delay failure system and its control method for motor-vehicle tail-gas detection Download PDFInfo
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- CN109634189A CN109634189A CN201910035830.0A CN201910035830A CN109634189A CN 109634189 A CN109634189 A CN 109634189A CN 201910035830 A CN201910035830 A CN 201910035830A CN 109634189 A CN109634189 A CN 109634189A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0073—Control unit therefor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
The present invention relates to motor-vehicle tail-gas detection technique field more particularly to a kind of sensor Delay failure systems and its control method for motor-vehicle tail-gas detection.Sensor Delay failure system includes the multiple sensors being embedded in high-temperature airflow pipeline, multiple sensor parallel connections, and is connected to control unit.Control method is that described control unit successively enables the sensor, before previous sensor failure, controls the previous sensor and deactivates, and enable latter sensor simultaneously.The present invention can guarantee seamless undertaking between multiple sensors, extend effective operating time of system, reduce because of the frequent maintenance of depletion sensor, reduce service cost.
Description
Technical field
The present invention relates to motor-vehicle tail-gas detection technique field more particularly to a kind of sensings for motor-vehicle tail-gas detection
Device Delay failure system and its control method.
Background technique
In the tail gas of vehicular emission, the pernicious gas containing there are many, such as carbon monoxide, oxynitrides and hydrocarbon
Deng seriously affecting people's health, and pollute to natural environment.So being detected to motor-vehicle tail-gas, to raising
Living standards of the people, protection environment have great importance.
It is at present usually Tail gas measuring to be carried out using sensor, but in the adverse circumstances of high-temperature high-speed airflow, sense
Device detecting head surface is effectively used operating time less than 1000 hours by high-temperature high-speed airflow accelerated weathering, serious wear, sensor,
About will in two to three months it fail.Moment sensor is unable to satisfy in the adverse circumstances of high temperature and high speed fluid, for a long time effectively
The problem of work.And new sensor is replaced, service cost is big.
Therefore, need it is a kind of for motor-vehicle tail-gas detection sensor Delay failure system and its control method to solve
Above-mentioned technical problem.
Summary of the invention
It is an object of the present invention to provide it is a kind of for motor-vehicle tail-gas detection sensor Delay failure system and
Its control method, to solve the sensor-service dimension that sensor existing in the prior art cannot work long hours and more renew
Protect the big technical problem of cost.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of sensor Delay failure system for motor-vehicle tail-gas detection, including being embedded in high-temperature airflow pipeline
Multiple sensors, multiple sensor parallel connections, and it is connected to control module.
Preferably, the branch road where each sensor is provided with switch, and by being switched on-off described in control, energy
It enough controls the enabling of the sensor and deactivates.
Preferably, the control module includes micro-control unit, storage unit, A/D converting unit and digital signal
Processing unit.
A kind of control method of the sensor Delay failure system for motor-vehicle tail-gas detection, the control module is successively
The sensor is enabled, before previous sensor failure, the previous sensor is controlled and deactivates, and enable latter sensing simultaneously
Device.
Preferably, record the operating time of the previous sensor, and will the operating time with it is described previous
Effective operating time of sensor compares, when the difference of effective operating time and the operating time reaches default
When difference, then controls the previous sensor and deactivate, and enable the latter sensor simultaneously.
Preferably, the real-time performance parameter of the acquisition previous sensor, and by the real-time performance parameter with it is described
The performance curve of previous sensor compares, when the real-time performance parameter exceeds the coverage area of the performance curve,
It then controls the previous sensor to deactivate, and enables the latter sensor simultaneously.
Preferably, recording the operating time of the previous sensor, while acquiring the real-time of the previous sensor
Performance parameter, and effective operating time of the operating time and the previous sensor is compared, while will be described
Real-time performance parameter and the performance curve of the previous sensor compare, when effective operating time is with described worked
Long difference reaches preset difference value and the real-time performance parameter exceeds the coverage area of the performance curve, the two judgements
Any one can control the previous sensor and deactivate when first reaching condition, and enable the latter sensor.
Preferably, the real-time performance parameter includes electric current and voltage, the performance curve is the curve of Current Voltage,
The range that upper limit curve and lower limit curve are enclosed in the coordinate system of the performance curve is the coverage area.
The present invention compared with the prior art the utility model has the advantages that
It is including more provided by the present invention for the sensor Delay failure system and its control method of motor-vehicle tail-gas detection
A to be embedded in the sensor in high-temperature airflow pipeline and being connected in parallel, control unit successively enables sensor, in previous sensor
Before failure, controls previous sensor and deactivate, and enable latter sensor simultaneously, so that multiple sensors can be realized seamless hold
It connects, extends effective operating time of system, reduce because of the frequent maintenance of depletion sensor, reduce service cost.
Detailed description of the invention
Fig. 1 is the schematic illustration of inventive sensor Delay failure system；
Fig. 2 is the performance chart of inventive sensor.
In figure:
10- sensor；20- switch；30- control module；31- micro-control unit；32- storage unit；33-A/D conversion is single
Member；34- digital signal processing unit.
Specific embodiment
Technical solution of the present invention is further illustrated with embodiment with reference to the accompanying drawing.It is understood that this place
The specific embodiment of description is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to
Convenient for description, in attached drawing, only the parts related to the present invention are shown and it is not all.
As shown in Figure 1, the present invention provides a kind of sensor Delay failure system for motor-vehicle tail-gas detection, including pre-
The multiple sensors 10 being embedded in high-temperature airflow pipeline, multiple sensors 10 are connected in parallel, and are connected to control module
30.The control method of the sensor Delay failure system is that the control module 30 successively enables the sensor 10, previous
Before sensor 10 fails, controls previous sensor 10 and deactivate, and enable latter sensor 10 simultaneously.It, can by above-mentioned setting
Guarantee seamless undertaking between multiple sensors 10, extend effective operating time of system, reduces because sensor 10 is lost frequently
Maintenance reduces service cost.In the present embodiment, ten sensors 10 have been arranged in parallel, if each sensor 10
Effective operating time in high-temperature severe environment is 1000 hours, then ten sensors 10 be capable of providing effective work when
Length is 10000 hours, works 8 hours and calculates daily by motor vehicle, then the system can satisfy motor vehicle having within two years
Imitate Tail gas measuring.The quantity of certain sensor 10 is not limited thereto, and particular number can be configured according to actual needs.
Specifically, the operating time of previous sensor 10 is recorded, and by operating time and the previous sensor 10
Effective operating time compares, and when the difference of effective operating time and the operating time reaches preset difference value, then controls
It makes previous sensor 10 to deactivate, and enables latter sensor 10 simultaneously.Wherein preset difference value can be some values, or one
Value range specifically can according to need and be configured.
Alternatively, acquire the real-time performance parameter of previous sensor 10, and by the real-time performance parameter and previous sensor 10
Performance curve compare, when real-time performance parameter exceed performance curve coverage area when, then control previous sensor 10
It deactivates, and enables latter sensor 10 simultaneously.
Again alternatively, recording the operating time of previous sensor 10, while acquiring the real-time performance of previous front sensor 10
Parameter, and effective operating time of operating time and previous sensor 10 is compared, at the same by real-time performance parameter with
The performance curve of previous sensor 10 compares, the difference of effective operating time and operating time reach preset difference value and
Real-time performance parameter exceeds the coverage area of performance curve, the two Rule of judgment any one when first reaching, before controlling
One sensor 10 deactivates, and enables latter sensor 10 simultaneously.The judgment method of the sensor failure is both above method
In conjunction with can detect the failure of sensor 10 much sooner, detect more accurate.
As shown in Fig. 2, in the present embodiment, real-time performance parameter includes electric current and voltage, performance curve is Current Voltage
Curve, curve A is standard curve, and curve A1 is upper limit curve, and curve A2 is lower limit curve, in the coordinate system of performance curve on
The range (Fig. 2 section line part) that limit curve and lower limit curve are enclosed is the coverage area of performance curve.Acquisition
Electric current and voltage are corresponding with coordinate points in the coordinate system of performance curve, when the coordinate points are located in the coverage area of performance curve
When, then illustrate that sensor 10 is effective；When the coordinate points exceed the coverage area of performance curve, then illustrate that sensor 10 fails.
Branch road where each sensor 10 is provided with switch 20, can by controlling the on-off of the switch 20
It controls the enabling of the sensor 10 and deactivates.
Control module 30 includes micro-control unit 31, storage unit 32, A/D converting unit 33 and Digital Signal Processing list
Member 34, storage unit 32 are used for the effective operating time and/or performance degradation curve of storage sensor 10, A/D converting unit 33
For the analog quantity of the operating time of the sensor 10 of reading and/or real-time performance parameter to be converted into digital quantity, number letter
Number processing unit 34 will be located for handle the operating time for being converted into digital quantity and/or real-time performance parameter is handled
Reason result is transferred to micro-control unit 31, and micro-control unit 31 controls the on-off of sensor 10 according to processing result.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (8)
1. a kind of sensor Delay failure system for motor-vehicle tail-gas detection, which is characterized in that including being embedded in High Temperature Gas
Multiple sensors (10) in flow tube road, multiple sensors (10) are connected in parallel, and are connected to control module (30).
2. the sensor Delay failure system according to claim 1 for motor-vehicle tail-gas detection, which is characterized in that every
Branch road where one sensor (10) is provided with switch (20), by controlling the on-off of the switch (20), can control
The enabling of the sensor (10) and deactivate.
3. the sensor Delay failure system according to claim 1 for motor-vehicle tail-gas detection, which is characterized in that institute
Stating control module (30) includes micro-control unit (31), storage unit (32), A/D converting unit (33) and Digital Signal Processing
Unit (34).
4. a kind of sensor Delay failure system according to claim 1-3 for motor-vehicle tail-gas detection
Control method, which is characterized in that the control module (30) successively enables the sensor (10), in previous sensor failure
Before, it controls previous sensor and deactivates, and enable latter sensor simultaneously.
5. control method according to claim 4, which is characterized in that the operating time of the previous sensor is recorded,
And effective operating time of the operating time and the previous sensor is compared, when effective operating time with
When the difference of the operating time reaches preset difference value, then control the previous sensor deactivate, and enable simultaneously it is described after
One sensor.
6. control method according to claim 4, which is characterized in that the real-time performance ginseng of the acquisition previous sensor
Number, and the real-time performance parameter and the performance curve of the previous sensor are compared, when the real-time performance parameter
When coverage area beyond the performance curve, then controls the previous sensor and deactivate, and enable the latter sensing simultaneously
Device.
7. control method according to claim 4, which is characterized in that the operating time of the previous sensor is recorded,
Acquire the real-time performance parameter of the previous sensor simultaneously, and by the effective of the operating time and the previous sensor
Operating time compares, while the real-time performance parameter and the performance curve of the previous sensor being compared, institute
The difference for stating effective operating time and the operating time reaches preset difference value and the real-time performance parameter beyond described
The coverage area of performance curve, the two Rule of judgment any one when first reaching, can control the previous sensor and deactivate,
And enable the latter sensor.
8. control method according to claim 6 or 7, which is characterized in that the real-time performance parameter includes electric current and electricity
Pressure, the performance curve are the curve of Current Voltage, and upper limit curve is enclosed with lower limit curve in the coordinate system of the performance curve
The range of synthesis is the coverage area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035830.0A CN109634189A (en) | 2019-01-15 | 2019-01-15 | A kind of sensor Delay failure system and its control method for motor-vehicle tail-gas detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035830.0A CN109634189A (en) | 2019-01-15 | 2019-01-15 | A kind of sensor Delay failure system and its control method for motor-vehicle tail-gas detection |
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| CN109634189A true CN109634189A (en) | 2019-04-16 |
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| CN203455642U (en) * | 2013-09-25 | 2014-02-26 | 向智勇 | Multi-sensor control circuit |
| CN105699979A (en) * | 2016-03-04 | 2016-06-22 | 余晓鹏 | Parking radar system without host and control method |
| CN205484259U (en) * | 2016-01-19 | 2016-08-17 | 长沙职业技术学院 | Automobile exhaust gas checking apparatus |
| CN107576346A (en) * | 2017-08-31 | 2018-01-12 | 广东美的制冷设备有限公司 | Detection method, device and the computer-readable recording medium of sensor |
| CN108692942A (en) * | 2018-05-24 | 2018-10-23 | 奇瑞汽车股份有限公司 | A kind of engine sensor detecting system and detection method |
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2019
- 2019-01-15 CN CN201910035830.0A patent/CN109634189A/en active Pending
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| CN102678330A (en) * | 2012-05-08 | 2012-09-19 | 联合汽车电子有限公司 | Diagnostic method for pressure sensors in turbocharging system |
| CN203455642U (en) * | 2013-09-25 | 2014-02-26 | 向智勇 | Multi-sensor control circuit |
| CN205484259U (en) * | 2016-01-19 | 2016-08-17 | 长沙职业技术学院 | Automobile exhaust gas checking apparatus |
| CN105699979A (en) * | 2016-03-04 | 2016-06-22 | 余晓鹏 | Parking radar system without host and control method |
| CN107576346A (en) * | 2017-08-31 | 2018-01-12 | 广东美的制冷设备有限公司 | Detection method, device and the computer-readable recording medium of sensor |
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Application publication date: 20190416 |