CN106353379A - On-line tester of handheld wide-domain oxygen sensor - Google Patents
On-line tester of handheld wide-domain oxygen sensor Download PDFInfo
- Publication number
- CN106353379A CN106353379A CN201610880964.9A CN201610880964A CN106353379A CN 106353379 A CN106353379 A CN 106353379A CN 201610880964 A CN201610880964 A CN 201610880964A CN 106353379 A CN106353379 A CN 106353379A
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- oxygen sensor
- wide
- domain oxygen
- control unit
- handheld
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses an on-line tester of a handheld wide-domain oxygen sensor. The on-line tester of the handheld wide-domain oxygen sensor comprises a shell (1) and a power supply (2), wherein the shell is connected with an oxygen sensor plughole (3); a display screen (4) is mounted in the shell and is connected with a microcomputer control unit (5); one end of the microcomputer control unit is connected with a key switch (6); the other end of the microcomputer control unit is successively connected with an AD collector (7) and a differential control circuit (8); one end of the oxygen sensor plughole is connected with the microcomputer control unit; the other end of the oxygen sensor plughole is connected with a probe (9) of the wide-domain oxygen sensor to be detected. According to the on-line tester of the handheld wide-domain oxygen sensor, the display screen is capable of directly displaying the pump current, measurement voltage and air-fuel ratio value of the wide-domain oxygen sensor; the on-line tester is high in detection accuracy, simple and convenient to connect and plug, high in operation efficiency, visual in display and convenient to carry; the quality and the yield of the products are ensured.
Description
Technical field
The present invention relates to a kind of for motor vehicle oxygen sensor, it is specifically related to a kind of tester of vehicle broad domain oxygen sensor
Device.
Background technology
At present, divide according to the characteristics of signals of vehicle oxygen sensor, it can be divided into: narrow (transition formula), wide area (wideband
Belt) oxygen sensor.Narrow oxygen sensor can only detect that air-fuel ratio has been dense or dilute, and oil spout in other words has been many or few
But, be not aware that specifically how much dense, how much dilute, electric injection system by this signal make distributive value dense dilute between knock-oning
Move and control vehicle air-fuel ratio to be about 14.7, generally use just.More and more stricter with exhausting control, broad domain oxygen sensor
Occur as soon as, broad domain oxygen sensor is known that specific air-fuel ratio, that is, how much or dilute the fuel oil spraying into cylinder dense
How many, the concrete ratio of air and fuel.Automotive oxygen sensor is crucial sensing element in BBG control system,
It is the vital part controlling motor vehicle exhaust emission, reducing automobile environmental pollution, improve automobile engine fuel oil burning quality.
Broad domain oxygen sensor is the oxygen voltage being measured using Ceramic sensible devices in each class A furnace A or discharge duct, by changing
Learn equilibrium principle and calculate corresponding oxygen concentration, reach in monitoring and control stove air-fuel ratio it is ensured that product quality and tail gas
The measuring cell of emission compliance, is widely used in the control climate of the bodies of heater such as all kinds of coal combustions, oil firing, gas burning.For electricity
Son controls the feedback control system of fuel injection equipment (FIE), for detecting the dense dilute of the oxygen concentration in aerofluxuss and air-fuel ratio, is starting
Carry out the monitoring that chemically correct fuel (14.7: 1) burns in machine, and convey feedback signal to computer.After it measures engine combustion
Aerofluxuss in the whether superfluous information of oxygen, i.e. oxygen content, and oxygen content is converted into voltage signal is delivered to electromotor meter
Calculation machine, enables the engine to realize the closed loop control with excess air factor as target.
The common detecting instrument of existing broad domain oxygen sensor is that test is desk-top, and its volume is big, weight is high, not easily shifted,
Less it is convenient for carrying use, also on the production line of oxygen sensor, random detection cannot be carried out to its semi-finished product, be oxygen sensor
Detection make troubles it is impossible to ensure product quality and yield rate.
Content of the invention
It is an object of the invention to overcoming the shortcomings of above-mentioned, and provide and a kind of be convenient for carrying, detect that simple, accuracy rate is high
The In-circiut tester of hand-held broad domain oxygen sensor.
The purpose of the present invention to be realized by following technical solution: the In-circiut tester of hand-held broad domain oxygen sensor, bag
Include shell, power supply, described shell is connected with oxygen sensor socket, described inside the shell equipped with display screen, this display screen and micro computer
Control unit connects；One end of described microcomputer control unit connects key switch, its other end is sequentially connected ad harvester, difference
Sub-control circuit.
One end of described oxygen sensor socket connects difference control circuit, its other end and the wide area oxygen of required detection and passes
The probe of sensor connects.
After the present invention, described display screen, microcomputer control unit, ad harvester, difference control circuit are module
Change (miniaturization) and design connected and cased portion, be easy to hand-held carrying；Microcomputer control unit (mcu) senses to wide area oxygen
The probe of device is heated, until its temperature is raised to desired value 700 degrees centigrade and keeps temperature constant state, wide by detection
The ri internal resistance numerical value of domain oxygen sensor finished product is drawn；Difference control circuit controls the pump electric current of detection broad domain oxygen sensor, should
The oxygen concentration of the gas that the size of pump electric current is gathered with broad domain oxygen sensor becomes certain ratio, then is transmitted by ad harvester
To microcomputer control unit, then pump electric current, the measurement being directly displayed out this broad domain oxygen sensor after data processing by display screen
Voltage and air-fuel ratio numerical value.Its Detection accuracy is high, patch simplicity, operation actual effect, intuitive display, easy to carry it is ensured that producing
Quality and yield rate.
Brief description
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the contour structures schematic diagram of the present invention.
Fig. 2 is the circuit block diagram (being connected with the probe of broad domain oxygen sensor) of the present invention.
Specific embodiment
Understand with reference to Fig. 1, Fig. 2, the In-circiut tester of hand-held broad domain oxygen sensor of the present invention, including shell 1, power supply 2,
Described shell 1 is connected with oxygen sensor socket 3, described shell 1 built with display screen 4, this display screen 4 and microcomputer control unit
5 (i.e. mcu) connects；One end of described microcomputer control unit 5 connects key switch 6 (being contained on shell 1), its other end successively
Connect ad harvester 7, difference control circuit 8.
One end of described oxygen sensor socket 3 connects the wide area oxygen of difference control circuit 8, its other end and required detection
The probe 9 (its socket) of sensor 10 connects.As shown in Fig. 2 the operation principle of the present invention is: power supply 2 work and first by micro- electricity
The probe 9 of brain control unit (mcu) 5 pairs of broad domain oxygen sensors 10 heats, until its temperature is raised to 700 degrees Celsius of desired value
Left and right and keep temperature constant state, this target temperature can by detect broad domain oxygen sensor finished product ri internal resistance numerical value be drawn.
Then, broad domain oxygen sensor is started working, and according to this special principle of energy, controls detection broad domain oxygen sensor by difference control circuit 8
Pump electric current, the oxygen concentration of the gas that the size of this pump electric current is gathered with broad domain oxygen sensor becomes certain ratio, then passes through
This analogue signal is converted into digital signal and sends microcomputer control unit (mcu) to by ad harvester 7, more defeated after data processing
Go out signal to display screen 4, thus shown the number of the pump electric current, measurement voltage and air-fuel ratio of this broad domain oxygen sensor by display screen
With this, value, judges whether broad domain oxygen sensor finished product is qualified.This detection mode is easy, quick, practical.Can also pass in wide area oxygen
On the production line of sensor, direct random detection is carried out to broad domain oxygen sensor semi-finished product, can at once do over again again for defective work
Do.
Claims (2)
1. the In-circiut tester of hand-held broad domain oxygen sensor, including shell (1), power supply (2) it is characterised in that: described shell
(1) it is connected with oxygen sensor socket (3), described shell (1) controls single built with display screen (4), this display screen (4) and micro computer
First (5) connect；One end of described microcomputer control unit (5) connects key switch (6), its other end is sequentially connected ad harvester
(7), difference control circuit (8).
2. hand-held broad domain oxygen sensor according to claim 1 In-circiut tester it is characterised in that: described oxygen sensing
One end of device socket (3) connects the probe of the broad domain oxygen sensor of difference control circuit (8), its other end and required detection
(9) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880964.9A CN106353379A (en) | 2016-09-30 | 2016-09-30 | On-line tester of handheld wide-domain oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880964.9A CN106353379A (en) | 2016-09-30 | 2016-09-30 | On-line tester of handheld wide-domain oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353379A true CN106353379A (en) | 2017-01-25 |
Family
ID=57866878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610880964.9A Pending CN106353379A (en) | 2016-09-30 | 2016-09-30 | On-line tester of handheld wide-domain oxygen sensor |
Country Status (1)
| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005052604A1 (en) * | 2003-11-29 | 2005-06-09 | G-Auto Co., Ltd | Portable electric testing equipment |
| US7090806B1 (en) * | 2000-05-01 | 2006-08-15 | Peter Lenehan | Portable oxygen sensor analyzer |
| CN101025385A (en) * | 2007-04-02 | 2007-08-29 | 吉林大学 | Portable detecting device for detecting automobile oil-consumption quantity and tail-gas quality and exhaust quantity |
| CN203011836U (en) * | 2012-12-25 | 2013-06-19 | 北京农业智能装备技术研究中心 | Dissolved oxygen concentration detecting device |
| CN105142789A (en) * | 2013-03-15 | 2015-12-09 | 纳诺拜希姆公司 | Systems and methods for mobile device analysis of nucleic acids and proteins |
| CN206114580U (en) * | 2016-09-30 | 2017-04-19 | 温州百岸汽车零部件有限公司 | Wide territory oxygen sensor's of hand -held type online tester |
-
2016
- 2016-09-30 CN CN201610880964.9A patent/CN106353379A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7090806B1 (en) * | 2000-05-01 | 2006-08-15 | Peter Lenehan | Portable oxygen sensor analyzer |
| WO2005052604A1 (en) * | 2003-11-29 | 2005-06-09 | G-Auto Co., Ltd | Portable electric testing equipment |
| CN101025385A (en) * | 2007-04-02 | 2007-08-29 | 吉林大学 | Portable detecting device for detecting automobile oil-consumption quantity and tail-gas quality and exhaust quantity |
| CN203011836U (en) * | 2012-12-25 | 2013-06-19 | 北京农业智能装备技术研究中心 | Dissolved oxygen concentration detecting device |
| CN105142789A (en) * | 2013-03-15 | 2015-12-09 | 纳诺拜希姆公司 | Systems and methods for mobile device analysis of nucleic acids and proteins |
| CN206114580U (en) * | 2016-09-30 | 2017-04-19 | 温州百岸汽车零部件有限公司 | Wide territory oxygen sensor's of hand -held type online tester |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |
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| RJ01 | Rejection of invention patent application after publication |