CN2699258Y - Reflection type infra-red fuel transducer - Google Patents
Reflection type infra-red fuel transducer Download PDFInfo
- Publication number
- CN2699258Y CN2699258Y CN 200420051409 CN200420051409U CN2699258Y CN 2699258 Y CN2699258 Y CN 2699258Y CN 200420051409 CN200420051409 CN 200420051409 CN 200420051409 U CN200420051409 U CN 200420051409U CN 2699258 Y CN2699258 Y CN 2699258Y
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- China
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- ica
- infrared
- oil level
- positive pole
- mount pad
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- Expired - Fee Related
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Abstract
The utility model provides a reflection type infrared fuel sensor, characterized in that the utility model comprises a mounting seat, a base positioned on the mounting seat, an oil level indicating and controlling circuit in the mounting seat, an infrared transmitting tube LED and an infrared receiver tube Q1 both mounted on the base. The sensor overcomes the defects of low pointing accuracy, short service life and low reliability in the existing sensor, and has the features of high pointing accuracy, long service life and high reliability.
Description
Technical field
The utility model belongs to engine signal control device technical field, is specifically related to a kind of reflection type infrared fuel sensor.
Background technology
Existing engine fuel indicating control adopts the rheochord control of float control,, wide accommodation simple in structure, extensive employing cheap for manufacturing cost with it, and still, there are defectives such as pointing accuracy is low, serviceable life is short, reliability is low in it.
The purpose of invention
The purpose of this utility model is in order to overcome the weak point of existing product, and a kind of pointing accuracy height, long service life, fuel sensor that reliability is high are provided.
The content of invention
The purpose of this utility model is achieved in that
A kind of reflection type infrared fuel sensor is characterized in that: it by mount pad, be arranged in base on the mount pad, be installed in infrared emission tube LED on the base and infrared receiver tube Q1 and form at the oil level indication control circuit of mount pad.When using the utility model, by mount pad the infrared ray fuel sensor is installed and fixed, and switch on for the infrared ray fuel sensor, connect by oil level indicator interface and oil level indicator, infrared emission tube LED sends infrared ray, reflection by pasta, make infrared receiver tube Q1 receive infrared ray and conducting, when fuel level reduces, ultrared reflecting surface decreases, the infrared ray that infrared emission tube LED launches will increase through the infrared ray flux of pasta reflection arrival infrared receiver tube Q1 thereupon, the infrared ray flux that infrared receiver tube Q1 receives will change with the variation of oil level, the current signal that output changes with oil level through oil level indication control circuit, the variation of control oil level indicator, thus reach the purpose of this utility model.
The description of the drawings
Accompanying drawing 1 the utility model structural drawing.
Accompanying drawing 2 the utility model circuit theory diagrams.
Embodiment
As accompanying drawing 1, accompanying drawing 2, a kind of reflection type infrared fuel sensor device, it is characterized in that: it is by mount pad, be positioned at the base on the mount pad, be installed in infrared emission tube LED on the base and infrared receiver tube Q1 and in mount pad by resistance R 1, R2, R3, R4, R5, R6, R7, R8, diode D1, voltage stabilizing diode D2, D3, capacitor C 1, NPN type triode Q2, the oil level control circuit that integrated operational amplifier ICA forms is formed, wherein, the positive pole of D1 connects positive source, negative pole is connected with R1, the other end of R1 and the end and the collector of Q1 and the positive pole of C1 that meet R2 after the negative pole of D2 is connected, the other end of R2 is connected with the positive pole of LED, R3 is connected between the emitter and power supply ground of Q1, the in-phase input end that is connected termination ICA of R3 and the collector of Q1, R5 is connected between the output terminal and its inverting input of ICA, R4 is connected between the inverting input and power supply ground of ICA, R6 is connected Q2 collector and ICA in-phase input end, R7 and the positive pole that meets D3 after R8 is connected, the emitter of another termination Q2 of R7, the negative pole of D3 and the output terminal that connects oil level indicator after the output terminal of ICA is connected, the positive pole of D2, the negative pole of LED, the emitter of Q2, another termination power ground of R8.When using the utility model, by mount pad the infrared ray fuel sensor is installed and fixed, connect by oil level indicator interface and oil level indicator, by giving infrared emission tube LED and infrared receiver tube Q1 power supply after D1, R1, R2 and the D2 voltage stabilizing, infrared emission tube LED sends infrared ray, by the pasta reflection, make infrared receiver tube Q1 conducting; After fuel tank is filled it up with oil, fuel oil pasta in the fuel tank increases, the infrared ray that the infrared light that infrared emission tube LED is sent arrives infrared receiver tube Q1 reduces, on the resistance R 3 voltage reduce to minimum, the in-phase input end current potential of ICA is minimum, the output terminal current potential of ICA is minimum, and by the electric current maximum of oil level indicator, its indicating value is maximum; Behind fuel consume, oil level in the fuel tank will change, the fuel oil pasta will increase the ultrared luminous flux that reflexes to infrared receiver tube Q1 that infrared emission tube LED sends thereupon, the infrared ray amount that red line receiving tube Q1 receives will progressively become big with the variation of oil level, it is big that voltage drop on the resistance R 3 will become thereupon, the in-phase input end voltage increases of ICA, the output voltage of ICA uprises, make the electric current step-down gradually by oil level indicator, its indicating value is for will be with the variation of oil level step-down progressively, thereby indicates the variation of fuel oil; For remedying the linearity of infrared receiver tube Q1, the electronic switching circuit that adopts Q2 and resistance R 6, R7, R8 and voltage stabilizing diode D3 to form, when the output potential height of ICA arrives the voltage breakdown of D3, D3 punctures, Q2 enters magnifying state, make resistance R 3 and R6 by the Q2 parallel connection, thereby reduce the in-phase input end current potential of ICA, reach the purpose that reduces its output potential, remedy the linearity of Q1, make the output of ICA steady, oil level indicator changes steadily, make the oil level indicator operate as normal, thereby reach the purpose of this utility model.
Claims (2)
1, a kind of reflection type infrared fuel sensor is characterized in that: it by mount pad, be arranged in base on the mount pad, be installed in infrared emission tube LED on the base and infrared receiver tube Q1 and form at the oil level indication control circuit of mount pad.
2, infrared ray fuel level sensor as claimed in claim 1, it is characterized in that: oil level indication control circuit is by resistance R 1, R2, R3, R4, R5, R6, R7, R8, diode D1, voltage stabilizing diode D2, D3, NPN type triode Q2, integrated operational amplifier ICA forms, wherein, the positive pole of D1 connects positive source, negative pole is connected with R1, the other end of R1 and the end and the collector of Q1 and the positive pole of C1 that meet R2 after the negative pole of D2 is connected, the other end of R2 is connected with the positive pole of LED, R3 is connected between the emitter and power supply ground of Q1, the in-phase input end that is connected termination ICA of R3 and the collector of Q1, R5 is connected between the output terminal and its inverting input of ICA, R4 is connected between the inverting input and power supply ground of ICA, R6 is connected Q2 collector and ICA in-phase input end, R7 and the positive pole that meets D3 after R8 is connected, the emitter of another termination Q2 of R7, the negative pole of D3 and the output terminal that connects oil level indicator after the output terminal of ICA is connected, the positive pole of D2, the negative pole of LED, the emitter of Q2, another termination power ground of R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051409 CN2699258Y (en) | 2004-04-26 | 2004-04-26 | Reflection type infra-red fuel transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051409 CN2699258Y (en) | 2004-04-26 | 2004-04-26 | Reflection type infra-red fuel transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699258Y true CN2699258Y (en) | 2005-05-11 |
Family
ID=34777147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420051409 Expired - Fee Related CN2699258Y (en) | 2004-04-26 | 2004-04-26 | Reflection type infra-red fuel transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699258Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095473A (en) * | 2010-12-26 | 2011-06-15 | 河海大学常州校区 | Transmission type photoelectric liquid level meter |
| CN108759677A (en) * | 2018-06-25 | 2018-11-06 | 梁益维 | A kind of photoelectric sensor circuit and its photoelectric sensor |
| CN109945952A (en) * | 2019-04-17 | 2019-06-28 | 佛山金田申电子有限公司 | Multi-purpose sensing device |
-
2004
- 2004-04-26 CN CN 200420051409 patent/CN2699258Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095473A (en) * | 2010-12-26 | 2011-06-15 | 河海大学常州校区 | Transmission type photoelectric liquid level meter |
| CN102095473B (en) * | 2010-12-26 | 2012-06-13 | 河海大学常州校区 | Transmission type photoelectric liquid level meter |
| CN108759677A (en) * | 2018-06-25 | 2018-11-06 | 梁益维 | A kind of photoelectric sensor circuit and its photoelectric sensor |
| CN108759677B (en) * | 2018-06-25 | 2024-05-07 | 梁益维 | Photoelectric sensor circuit and photoelectric sensor thereof |
| CN109945952A (en) * | 2019-04-17 | 2019-06-28 | 佛山金田申电子有限公司 | Multi-purpose sensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |