CN102705079A - Automobile oil-water separation alarm with short circuit protection function - Google Patents
Automobile oil-water separation alarm with short circuit protection function Download PDFInfo
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- CN102705079A CN102705079A CN2012101745366A CN201210174536A CN102705079A CN 102705079 A CN102705079 A CN 102705079A CN 2012101745366 A CN2012101745366 A CN 2012101745366A CN 201210174536 A CN201210174536 A CN 201210174536A CN 102705079 A CN102705079 A CN 102705079A
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Abstract
The invention relates to an automobile oil-water separation alarm with a short circuit protection function. The alarm comprises an oil-water separation detection sensor and an alarm indicating lamp externally connected to the oil-water separation detection sensor, wherein the oil-water separation detection sensor comprises a polyamide shell formed at one time, a direct current power supply external interface, an alarm indicating lamp external interface and a power supply ground external interface which are embedded into the top of the shell, an alarm probe embedded into the lower end of the shell, and a short circuit protection circuit embedded into the shell. Through the design of the short circuit protection circuit, the oil-water separation detection sensor quickly detects short circuit change under the adverse conditions that an external load is short-circuited and the like, and cuts off conveyed current in short time, so that the short circuit protection function is realized, and high practicability is achieved.
Description
Technical field
The present invention relates to automotive oil water separation alarm, specifically relate to a kind of automotive oil water separation alarm with short-circuit protection design.
Background technique
Flourish along with automotive industry, the application standard of motor car engine further improves.Under the overall trend that economizes on resources, protects environment, along with the compulsory execution of Europe III motor standard, to the also further lifting of requirement of fuel oil filtration system.The gasoline separator is the most important components of fuel filter, and it mainly acts on is the moisture of removing in the fuel oil, to reduce the oil nozzle fault, prolongs the working life of motor.
Under gasoline separator proper functioning, fuel oil is through after the oil-water separation, and clean fuel oil gets into the oil-way system of automobile, and the moisture of separating then gets into the ponding cup of fuel filter.When isolated moisture was accumulated to certain limit in the fuel oil oil and water seperator, too much moisture possibly cause the oil-water separation decrease in efficiency, even caused oil circuit and stop up.Therefore adopt the oil-water separation detecting sensor that the moisture of separating is detected; When the oil-water separation detecting sensor detects isolated moisture and is accumulated to certain limit; Triggering driving tutorial light, buzzer, motormeter etc. reminds; Thereby the generation alarm signal, the guiding driver gets rid of too much ponding.
At present, in the automobile using process, automotive oil water separation alarm usually is short-circuited by the extraneous factor effect, and the short-circuit conditions that possibly exist is following:
1. in sensor when assembling, is owing to misoperation causes short circuit with supporting warning light wrong plug.
During working sensor because automobile bumpiness causes supporting warning light wire harness bonding short circuit.
3. supporting warning light, buzzer damage and cause short circuit sensor.
4. the short circuit sensor that causes of other accidentalia.
When above-mentioned short-circuit conditions occurs; Traditional automotive oil water separation alarm is not because of possessing short-circuit protection function; Can occur burning and can't recover the situation of proper functioning, even also possibly cause serious consequences such as the car load wire harness burns, the vehicle fuel oil circuit burns, car accumulator burns.
Therefore, design a kind of automotive oil water separation alarm to above-mentioned situation, just the problem that faces of inventor with short-circuit protection design.
Summary of the invention
The purpose of this invention is to provide a kind of automotive oil water separation alarm with short-circuit protection design; When rough sledding such as short circuit occurring when external load; The oil-water separation detecting sensor detects short circuit rapidly and changes, and cuts off at short notice and carries electric current, thereby reach the effect of short-circuit protection.
The technological scheme that the present invention adopted is: a kind of automotive oil water separation alarm with short-circuit protection design comprises the oil-water separation detecting sensor and is external in the alarm indicator lamp on the oil-water separation detecting sensor.Said oil-water separation detecting sensor comprises one-time formed polyamide shell; Be embedded in DC electrical source external tapping, alarm indicator lamp external tapping, the power supply ground external tapping on shell top, be embedded in the alarm probe of shell lower end and the short-circuit protection circuit that embeds enclosure.
Further, said short-circuit protection circuit is by circuit input power supply VCC, alarm control signal SIG, alarm output signal OUT, capacitor C 1, triode Q1, Q2, Q3, resistance R 6, R7 composition.Said capacitor C 1 one end connecting circuits input power supply VCC, the other end links to each other with the base stage of triode Q1; Said resistance R 6 one end ground connection, the other end are connected with the collector electrode of triode Q1, the base stage of triode Q2 respectively; The emitter of said triode Q1 links to each other with the emitter of triode Q2; The collector electrode of said triode Q2 is connected to the emitter of resistance R 7 and triode Q3; The base stage of said triode Q3 links to each other with alarm control signal SIG, alarm output signal OUT respectively with collector electrode.
Further, said triode Q1, Q3 are the positive-negative-positive pipe.
Beneficial effect of the present invention:
Traditional automotive oil water separation alarm internal circuit that does not possess short-circuit protection function mainly is to comprise triode Q3 and produce alarm signal output through alarm control signal SIG control triode Q3.When rough sledding such as short circuit occurring when automotive oil water separation alarm external loading; The CE that the supply voltage that circuit input power supply VCC produces all is carried in triode Q3 ties; Because the excessive triode Q3 that causes of electric current burns, thereby cause the inefficacy of automotive oil water separation alarm.Simultaneously, because automotive oil water separation alarm is installed in the vehicle fuel system, automotive oil water separation alarm produces a large amount of heats in the process of burning, and this heat possibly ignited the vehicle fuel system, thereby causes fire disaster.
A kind of automotive oil water separation alarm with short-circuit protection design of the present invention, its enclosure embeds short-circuit protection circuit.When the short circuit of automotive oil water separation alarm external loading, triode Q2 and Q3 share the supply voltage that circuit input power supply VCC produces jointly, and this moment, the BE of triode Q1 tied because of resistance R 7 network conductings; Thereby triode Q1 is opened, make the BE of triode Q2 bear existing high level, triode Q2 closes; There is not electric current output to supply with triode Q3 from triode Q2 thus; Not conducting of triode Q3, cut-off current output, thus protection automotive oil water separation alarm safety can not burnt.After this be on state because of resistance R 7 always, thereby continue to realize the short-circuit protection state.Have only automotive oil water separation alarm is re-powered, could eliminate the short-circuit protection state.
In sum; When rough sledding such as short circuit occurring when external load; The oil-water separation detecting sensor detects short circuit rapidly and changes, and cuts off at short notice and carries electric current, thereby reach the effect of short-circuit protection; Unshorting re-powers behind the source, and automotive oil water separation alarm recovers proper functioning again.
Description of drawings
Fig. 1 is an oil-water separation detecting sensor plan view of the present invention.
Fig. 2 is an oil-water separation detecting sensor right elevation of the present invention.
Fig. 3 is an oil-water separation detecting sensor front elevation of the present invention.
Fig. 4 is that the present invention protects the short circuit current schematic representation.
Description of reference numerals: 1-shell; 2-DC electrical source external tapping; 3-alarm indicator lamp external tapping; 4-power supply ground external tapping; The 5-alarm probe.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values drop on application appended claims institute restricted portion equally.
Like Fig. 1,2, shown in 3, a kind of automotive oil water separation alarm with short-circuit protection design comprises the oil-water separation detecting sensor and is external in the alarm indicator lamp on the oil-water separation detecting sensor.Said oil-water separation detecting sensor comprises one-time formed polyamide shell (1); Be embedded in DC electrical source external tapping (2), alarm indicator lamp external tapping (3), the power supply ground external tapping (4) on shell (1) top, be embedded in the alarm probe (5) of shell (1) lower end and embed the inner short-circuit protection circuit of shell (1).
As shown in Figure 4, said short-circuit protection circuit is by circuit input power supply VCC, alarm control signal SIG, alarm output signal OUT, capacitor C 1, triode Q1, Q2, Q3, resistance R 6, R7 composition.Said capacitor C 1 one end connecting circuits input power supply VCC, the other end links to each other with the base stage of triode Q1; Said resistance R 6 one end ground connection, the other end are connected with the collector electrode of triode Q1, the base stage of triode Q2 respectively; The emitter of said triode Q1 links to each other with the emitter of triode Q2; The collector electrode of said triode Q2 is connected to the emitter of resistance R 7 and triode Q3; The base stage of said triode Q3 links to each other with alarm control signal SIG, alarm output signal OUT respectively with collector electrode.
Traditional automotive oil water separation alarm internal circuit that does not possess short-circuit protection function mainly is to comprise triode Q3 and produce alarm signal output through alarm control signal SIG control triode Q3.When rough sledding such as short circuit occurring when automotive oil water separation alarm external loading; The CE that the supply voltage that circuit input power supply VCC produces all is carried in triode Q3 ties; Because the excessive triode Q3 that causes of electric current burns, thereby cause the inefficacy of automotive oil water separation alarm.Simultaneously, because automotive oil water separation alarm is installed in the vehicle fuel system, automotive oil water separation alarm produces a large amount of heats in the process of burning, and this heat possibly ignited the vehicle fuel system, thereby causes fire disaster.
A kind of automotive oil water separation alarm of the present invention with short-circuit protection design, the inner short-circuit protection circuit that embeds of its shell (1).When the short circuit of automotive oil water separation alarm external loading, triode Q2 and Q3 share the supply voltage that circuit input power supply VCC produces jointly, and this moment, the BE of triode Q1 tied because of resistance R 7 network conductings; Thereby triode Q1 is opened, make the BE of triode Q2 bear existing high level, triode Q2 closes; There is not electric current output to supply with triode Q3 from triode Q2 thus; Not conducting of triode Q3, cut-off current output, thus protection automotive oil water separation alarm safety can not burnt.After this be on state because of resistance R 7 always, thereby continue to realize the short-circuit protection state.Have only automotive oil water separation alarm is re-powered, could eliminate the short-circuit protection state.
When rough sledding such as short circuit occurring when external load; The oil-water separation detecting sensor detects short circuit rapidly and changes, and cuts off at short notice and carries electric current, thereby reach the effect of short-circuit protection; Unshorting re-powers behind the source, and automotive oil water separation alarm recovers proper functioning again.
Claims (4)
1. the automotive oil water separation alarm with short-circuit protection design comprises the oil-water separation detecting sensor and is external in the alarm indicator lamp on the oil-water separation detecting sensor.It is characterized in that: said oil-water separation detecting sensor comprises one-time formed polyamide shell; Be embedded in DC electrical source external tapping, alarm indicator lamp external tapping, the power supply ground external tapping on shell top, be embedded in the alarm probe of shell lower end and the short-circuit protection circuit that embeds enclosure.
2. a kind of automotive oil water separation alarm according to claim 1 with short-circuit protection design; It is characterized in that: said short-circuit protection circuit is by circuit input power supply VCC, alarm control signal SIG, alarm output signal OUT; Capacitor C 1; Triode Q1, Q2, Q3, resistance R 6, R7 form.
3. a kind of automotive oil water separation alarm with short-circuit protection design according to claim 2 is characterized in that: said capacitor C 1 one end connecting circuits input power supply VCC, and the other end links to each other with the base stage of triode Q1; Said resistance R 6 one end ground connection, the other end are connected with the collector electrode of triode Q1, the base stage of triode Q2 respectively; The emitter of said triode Q1 links to each other with the emitter of triode Q2; The collector electrode of said triode Q2 is connected to the emitter of resistance R 7 and triode Q3; The base stage of said triode Q3 links to each other with alarm control signal SIG, alarm output signal OUT respectively with collector electrode.
4. a kind of automotive oil water separation alarm with short-circuit protection design according to claim 2, it is characterized in that: said triode Q1, Q3 are the positive-negative-positive pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101745366A CN102705079A (en) | 2012-05-31 | 2012-05-31 | Automobile oil-water separation alarm with short circuit protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101745366A CN102705079A (en) | 2012-05-31 | 2012-05-31 | Automobile oil-water separation alarm with short circuit protection function |
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| CN102705079A true CN102705079A (en) | 2012-10-03 |
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| CN2012101745366A Pending CN102705079A (en) | 2012-05-31 | 2012-05-31 | Automobile oil-water separation alarm with short circuit protection function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5065139A (en) * | 1990-05-22 | 1991-11-12 | Joseph Shefsky | Portable level sensing apparatus |
| CN201470159U (en) * | 2009-08-03 | 2010-05-19 | 蚌埠森瑟尔测控系统工程有限公司 | A liquid level alarm for an oil-water separating filter |
| CN201661398U (en) * | 2010-03-12 | 2010-12-01 | 王蓉兰 | Electric heating diesel oil filter |
| CN102284196A (en) * | 2011-06-13 | 2011-12-21 | 三一重工股份有限公司 | Drainage device, draining method and oil water separator for oil and water separation |
| CN202659346U (en) * | 2012-05-31 | 2013-01-09 | 上海四通仪表股份有限公司 | Automobile oil-water separation alarming apparatus with short-circuit protection design |
-
2012
- 2012-05-31 CN CN2012101745366A patent/CN102705079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5065139A (en) * | 1990-05-22 | 1991-11-12 | Joseph Shefsky | Portable level sensing apparatus |
| CN201470159U (en) * | 2009-08-03 | 2010-05-19 | 蚌埠森瑟尔测控系统工程有限公司 | A liquid level alarm for an oil-water separating filter |
| CN201661398U (en) * | 2010-03-12 | 2010-12-01 | 王蓉兰 | Electric heating diesel oil filter |
| CN102284196A (en) * | 2011-06-13 | 2011-12-21 | 三一重工股份有限公司 | Drainage device, draining method and oil water separator for oil and water separation |
| CN202659346U (en) * | 2012-05-31 | 2013-01-09 | 上海四通仪表股份有限公司 | Automobile oil-water separation alarming apparatus with short-circuit protection design |
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Application publication date: 20121003 |