CN201210099Y - Electronic automobile machine oil pressure sensor - Google Patents
Electronic automobile machine oil pressure sensor Download PDFInfo
- Publication number
- CN201210099Y CN201210099Y CNU2008200370418U CN200820037041U CN201210099Y CN 201210099 Y CN201210099 Y CN 201210099Y CN U2008200370418 U CNU2008200370418 U CN U2008200370418U CN 200820037041 U CN200820037041 U CN 200820037041U CN 201210099 Y CN201210099 Y CN 201210099Y
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Abstract
The utility model relates to an electronic type vehicle engine oil pressure sensor which is used for detecting the vehicle engine oil pressure, belonging to the technical field of the sensor detection device. In the main technical proposal, an outer casing is connected with an outer cover to form an integrative body; a printed board component is connected with a control circuit and then arranged in the outer casing; a metal ring is arranged in the outer casing; a connecting circuit is connected with the printed board component; the output end of the printed board component is connected with a four-core connector and a two-core connector; and the four-core connector and the two-core connector are respectively connected with the outer cover. The structure of the utility model is simple, compact and reasonable. Because the sensor integrates European second-level standards and European third-level standards, the utility model has the advantages of high temperature resistance, corrosion resistance, no contact, capability of matching an engine ECU and a digital instrument, long service life, high performance-price ratio and the like. The utility model ensures the reliable realization of product functions, effectively guarantees the performance and quality of the product, thus achieving the quality requirement of the vehicle manufacturer.
Description
Technical field
The utility model relates to a kind of Electronical Oil Pressure Sensor for Diesel Engine, is used for the detection of the engine oil pressure of automobile, belongs to the sensor detecting device technical field.
Background technology
The automobile engine oil pressure transducer is an important automobile sensor of measuring the engine lubrication system engine oil pressure, is a kind of of large usage quantity in the existing sensor.The domestic automobile industry still extensively adopts slip formula or bimetallic strip structure electrothermal oil pressure gauge at present.This mechanical structure type oil pressure gauge exists that precision is low, quality of production poor stability, the life-span is short, sealing is poor, output signal can not with shortcomings such as digital instrumentation is complementary.Along with developing of automobile industry, can not satisfy the needs of new automobile, be badly in need of the novel automobile of development and substitute with engine oil pressure pickup.Engine oil pressure pickup mainly by outer cover, shell, printing pull, ground loop and connector etc. form.It has only single track electric current and voltage output the pressure transducer of this kind structure, can only match with machinery instrument.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thereby a kind of Electronical Oil Pressure Sensor for Diesel Engine is provided, and can improve the precision of oil pressure gauge, can prolong the serviceable life of oil pressure gauge; Can guarantee that product function reliably realizes, effectively ensure the performance and the quality of product, thereby reach the quality requirements of auto vendor.
Main solution of the present utility model is achieved in that
The utility model mainly adopts shell and outer cover to connect to form integral body, and the printed board parts connect control circuit to be installed in the enclosure, and ground loop is installed in the enclosure, and O-ring seal is installed in the enclosure, and the O RunddichtringO is installed in the outer cover; Feature is that connecting circuit is connected with the printed board parts, and printed board parts output terminal connects the four-core connector and two core connectors connect, and four-core connector and two core connectors are connected on the outer cover.
Pressure difference input pressure induction special chip and thermistor that described control circuit is produced by machine oil, thermistor output resistance signal; Pressure sensitive special chip output terminal connects the single-chip microcomputer input end by lead, and the single-chip microcomputer output terminal is connected with first filter rectifier, the first optocoupler transmission circuit and the second optocoupler transmission circuit respectively by lead; The first filter rectifier output voltage signal; The first optocoupler transmission circuit output terminal connects the second filter rectifier input end by lead, the second filter rectifier output current signal; The second optocoupler transmission circuit output terminal connects stabilivolt input end, stabilivolt output alarm signal by lead;
The induction of described pressure sensitive special chip is converted into electric signal, and the electric signal of output is exported voltage pulse signal, current pulse signal and the warning pulse signal of corresponding engine oil pressure size respectively as the input of single-chip microcomputer after Single Chip Microcomputer (SCM) program is handled;
Described optocoupler transmission circuit is through the photoelectricity coupling, and output signal is converted into the alerting signal that automobile instrument can be discerned to the pulse signal by stabilivolt circuit arrangement output;
Described filter rectifier is that the pulse signal of different duty passes through the rectification of RC circuit filtering, can export the continuous signal of certain limit, and this continuous signal can be discerned by automobile instrument;
Described automobile instrument is meant and is installed on the automobile, pointer gauge that can the pickup data, and it is converted into pointer data by the signal of receiving sensor output, can directly be read by people.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Because this sensor integrated Europe two standards and Europe three standards, have high temperature resistant, corrosion-resistant, contactless, can be complementary with digital instrumentation, characteristics such as life-span length, ratio of performance to price height; The precision of oil pressure gauge can be improved, the serviceable life of oil pressure gauge can be prolonged; Can guarantee that product function reliably realizes, effectively ensure the performance and the quality of product, thereby reach the quality requirements of auto vendor.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model connector structure synoptic diagram.
Fig. 3 is the utility model connecting circuit frame principle figure.
Fig. 4 is the utility model control circuit frame principle figure.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1 and Figure 2: it mainly is made up of printed board parts 1, shell 2, outer cover 3, ground loop 4, connecting circuit 5, O-ring seal 6, O RunddichtringO 7, four-core connector 8 and two core connectors 9.
The utility model will adopt shell 2 and outer cover 3 to connect to form integral body, and printed board parts 1 connect control circuit and are installed in the shell 2, and ground loop 4 is installed in shell 2, O-ring seal 6 is installed in the shell 2, guarantee the contact sealing, O RunddichtringO 7 is installed in the outer cover 3, guarantees the contact sealing; Connecting circuit 5 is connected with printed board parts 1, has solved safe problem easy for installation.Printed board parts 1 output terminal connects four-core connector 8 and two core connectors 9 connect, and four-core connector 8 and two core connectors 9 are connected on the outer cover 3.Connecting circuit 5 replaces the function of lead; Four-core connector 8 and two core connectors 9 are connected on the outer cover 3.
As shown in Figure 3:
Connecting circuit 5 substitutes the lead functions, the input of the DC voltage of printed board parts 1,, six tunnel input and output of resistance output, voltage output, electric current output, alarm pressure output are connected on the connector on the outer cover 3, have solved the stable problem of installing.
As shown in Figure 4:
Whole sensor is to be dipped in the machine oil, by detecting the pressure of machine oil, be converted into the voltage signal that instrument can be discerned then, and resistance signal, current signal come work.The pressure that machine oil produces is as the input of sensor, and the induction by the TPS13 pressure sensor chip is converted into electric signal, and the electric signal of output then is connected input as single-chip microcomputer by lead with single-chip microcomputer (EM78P211N).Export voltage pulse signal, current pulse signal and the warning pulse signal of corresponding engine oil pressure size after single-chip microcomputer (EM78P211N) routine processes respectively.The voltage pulse signal of output is connected with a RC filter rectifier by lead, and the pulse of different duty is converted into the voltage signal that the instrument of certain limit can be discerned, and the parameter in the adjusting RC circuit can be controlled output area; The current pulse signal of output is connected by the input end of lead with first, second optocoupler transmission circuit (PC817), be coupled by photoelectricity, the quality of balance of the circuit the inside after the coupling is higher than front end, and interference level just can not be transmitted to back-end circuit, has well solved interference problem.The second optocoupler transmission circuit output terminal connects the stabilivolt input end by lead; The optocoupler output signal is converted into the current signal that instrument can be discerned to different duty cycle pulse signals by stabilivolt circuit arrangement output; The warning pulse signal of single-chip microcomputer output is connected by the input end with optocoupler PC817 equally, and through the photoelectricity coupling, optocoupler transmission circuit output signal is converted into the alerting signal that instrument can be discerned to the pulse signal by stabilivolt circuit arrangement output.
This engine oil pressure pickup also has the function of temperature detection.The resistance signal output that the engine oil pressure signal can be discerned by thermistor induction output meter.
Principle of work of the present utility model: engine oil pressure can vary with temperature the resistance signal that changes by thermistor induction output, can read oil temperature thus.Engine oil pressure is converted into electric signal to pressure signal by pressure sensitive chip TPS13, this electric signal changes into voltage signal, current signal and alerting signal for impulse form to the electric signal of corresponding size simultaneously by single-chip microcomputer again, the electric signal of the impulse form of this three road representative pressure is handled via circuit signal respectively again, and output at last can be voltage signal, current signal and the alerting signal of instrument identification.The bottleneck that has only voltage signal output before having broken through, in order successfully to realize multiple signals output, what we used at voltage signal processing circuit is the RC filtering circuit, handles and alerting signal is handled usefulness is that photoelectricity is coupled at current signal, has discharged interference with this.This novel sensor is to output to the automobile ECU control system with electronic watch and stem-winder, has more adapted to the development of automobile industry.
Claims (2)
1, a kind of Electronical Oil Pressure Sensor for Diesel Engine, adopt shell (2) and outer cover (3) to connect to form integral body, printed board parts (1) connect control circuit and are installed in the shell (2), ground loop (4) is installed in shell (2), 0 RunddichtringO (7) is installed in the outer cover (3), it is characterized in that connecting circuit (5) is connected with printed board parts (1), printed board parts (1) output terminal connects four-core connector (8) and two core connectors (9), and four-core connector (8) and two core connectors (9) are connected on the outer cover (3).
2, Electronical Oil Pressure Sensor for Diesel Engine according to claim 1 is characterized in that pressure difference input pressure induction special chip and thermistor that described control circuit is produced by machine oil, thermistor output resistance signal; Pressure sensitive special chip output terminal connects the single-chip microcomputer input end by lead, and the single-chip microcomputer output terminal is connected with first filter rectifier, the first optocoupler transmission circuit and the second optocoupler transmission circuit respectively by lead; The first filter rectifier output voltage signal; The first optocoupler transmission circuit output terminal connects the second filter rectifier input end by lead, the second filter rectifier output current signal; The second optocoupler transmission circuit output terminal connects stabilivolt input end, stabilivolt output alarm signal by lead;
Described pressure sensitive special chip induction is converted into electric signal, and the electric signal of output is exported voltage pulse signal, current pulse signal and the warning pulse signal of corresponding engine oil pressure size respectively as the input of single-chip microcomputer after Single Chip Microcomputer (SCM) program is handled;
Described optocoupler transmission circuit is through the photoelectricity coupling, and output signal is converted into the alerting signal that automobile instrument can be discerned to the pulse signal by stabilivolt circuit arrangement output;
Described filter rectifier is that the pulse signal of different duty passes through the rectification of RC circuit filtering, can export continuous signal, and this continuous signal can be discerned by automobile instrument;
Described automobile instrument is meant and is installed on the automobile, pointer gauge that can the pickup data, and it is converted into pointer data by the signal of receiving sensor output, can directly be read by people.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200370418U CN201210099Y (en) | 2008-05-28 | 2008-05-28 | Electronic automobile machine oil pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200370418U CN201210099Y (en) | 2008-05-28 | 2008-05-28 | Electronic automobile machine oil pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201210099Y true CN201210099Y (en) | 2009-03-18 |
Family
ID=40480836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200370418U Expired - Fee Related CN201210099Y (en) | 2008-05-28 | 2008-05-28 | Electronic automobile machine oil pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201210099Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900624A (en) * | 2010-08-02 | 2010-12-01 | 陈旭财 | Grounded pressure transmitter |
| CN107120157A (en) * | 2017-06-16 | 2017-09-01 | 芜湖瑞德机械科技有限公司 | Engine oil pressure pickup band adjusts sliding equipment |
-
2008
- 2008-05-28 CN CNU2008200370418U patent/CN201210099Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900624A (en) * | 2010-08-02 | 2010-12-01 | 陈旭财 | Grounded pressure transmitter |
| CN101900624B (en) * | 2010-08-02 | 2011-06-01 | 陈旭财 | Grounded pressure transmitter |
| CN107120157A (en) * | 2017-06-16 | 2017-09-01 | 芜湖瑞德机械科技有限公司 | Engine oil pressure pickup band adjusts sliding equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20170528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |