CN108643987A - Engine motor oil cutout detection switch and temperature detection integrated apparatus - Google Patents
Engine motor oil cutout detection switch and temperature detection integrated apparatus Download PDFInfo
- Publication number
- CN108643987A CN108643987A CN201810377029.XA CN201810377029A CN108643987A CN 108643987 A CN108643987 A CN 108643987A CN 201810377029 A CN201810377029 A CN 201810377029A CN 108643987 A CN108643987 A CN 108643987A
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- Prior art keywords
- thermistor
- control circuit
- probe
- sensor
- external control
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M2250/00—Measuring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a kind of engine motor oil cutout detection switch and temperature detection integrated apparatus, including sensor base and sensor mounting post, it is installed with upper probe and lower step probe respectively in sensor mounting post, on, the connecting wire of lower probe is connect with external control circuit, it is equipped in upper probe on two panels PCB, a piece of PCB and thermistor R is installed2And heating resistor R3, thermistor R is installed on another PCB1, pt100 is installed in lower probe；Electric bridge is connect after the power supply of 15v power modules with differential amplifier inputs on external control circuit, the output of the difference amplifier is connect after analog-to-digital conversion module, signal amplifier with relay, and relay is used to control the working condition of the single-pole double-throw switch (SPDT) on external control circuit.The present invention has output response rapid, and output pulsation is small, and action is accurate, and the high advantage of reliability brings great convenience to the installation and use of user.
Description
Technical field
The invention belongs to electromechanical integration monitoring device and control systems.Especially it is to provide a kind of engine motor oil cutout inspection
Slowdown monitoring switch and temperature detection integrated apparatus.
Background technology
Traditional cutout detection switch has baffle-type flow switch and plug-in type flow switch etc., and also known as mechanical flow is opened
It closes.
Baffle-type flow switch is used to detect the air and liquid of flowing, should not have prehensile sundries in liquid.Work as fluid
When flowing through pipeline, baffle deflection makes single-pole double throw microswitch be acted on setting flow, exports by adjusting bolt is reconciled
Switching signal.Baffle-type flow switch is divided into mechanical part and electronic section, and mechanical part is mounted among the pipeline of fluid, body
Product is big, and installation is complicated, time-consuming and laborious.
Measurement of the differential pressure flow switches for fluid flow is by measuring the pressure drop at the both ends such as valve, orifice plate come real
It is existing, then pressure drop and flow curve by looking into valve or orifice plate can be obtained accurate flow.Differential pressure flow switches are same
With the shortcomings of volume heaviness, installation is complicated, complexity of tabling look-up.
Since there are movable parts for the flow switch of mechanical type, unfailing performance is poor, has had and has been switched by heat type flow quantity
The trend gradually substituted.
Heat type flow quantity detection switch uses thermal diffusion principle, thermal diffusion technology be a kind of function admirable under severe conditions,
The high technology of reliability.When heat type flow quantity detection switch is placed in there are two temperature sensor in medium, one of sensor
It is heated to the temperature of environment temperature or more, another temperature sensor is used for induction medium temperature.Velocity of medium increases, and is situated between
The heat that matter is taken away increases, and the temperature difference of two temperature sensors will change with the change in flow of medium, according to temperature difference with
The proportionate relationship of velocity of medium can obtain the flow of fluid.
General heat type flow quantity detection switch is fine for the fluid flow detection result of steady temperature, but for temperature
The shortcomings of detection of the fluid flow of variation has response speed slow, output pulsation, malfunction.Ship engine oil temperature
Variation is big, and temperature is low when just startup, and temperature is high after steady operation and occasionally has fluctuation, therefore current heat type flow quantity detection
Switch is difficult to apply to engine motor oil flow detection.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of engine motor oil cutout detection switch and
Temperature detection integrated apparatus,
The present invention solves its technical problem and following technical scheme is taken to realize：
A kind of engine motor oil cutout detection switch and temperature detection integrated apparatus, including made of stainless steel material in
Empty hexagonal sensor base is integrally formed with sensor mounting post on the right side of sensor base, in the biography close to sensor base
Sensor mounting post root is formed with installation external screw thread, and there are two tapped installations for system in the right end face of sensor mounting post
Hole is installed with upper probe and lower step probe respectively on two mounting holes, on, the connecting wire of lower probe is pierced by mounting hole
Left bottom be pierced by by sensor base left end face after sensor mounting post and connect with external control circuit, on described
The component side that two chip sizes identical PCB, every PCB are equipped in portion's probe is close to the inner wall of upper probe, on a piece of PCB
Thermistor R is installed2And the heating resistor R for heated thermistor3, thermistor R is installed on another PCB1,
Pt100 is installed in the lower probe；
Three line conductors of the pt100 and the outbound data end of external control circuit connect, institute thermistor R1And temperature-sensitive
Resistance R2With resistance R6, roughly adjusted rheostat R4And fine tuning resistance R5Collectively form electric bridge, electric bridge after the power supply of 15v power modules with difference
Amplifier in connection, 15v power modules is divided to be connect to external power with the 24v of external control circuit after power source protective module
Mouth connection, is connected in parallel on thermistor R2The heating resistor R at both ends3It is powered by 15v power modules, the output of the difference amplifier
It is connect with relay after analog-to-digital conversion module, signal amplifier, the hilted broadsword that relay is used to control on external control circuit is double
The working condition of throw switch, while sensor failure alarm is connected on the output end of analog-to-digital conversion module, the sensing
Device Failure Alarm device monitors the output voltage of analog-to-digital conversion module in real time, alarms after output voltage exceeds setting range.
Moreover, being bonded with gasket on the sensor base right side.
Moreover, being further fitted with waterproof connector in the conducting wire punched out of the sensor base left end face.
Moreover, being further connected with by light emitting diode D on the output end of the analog-to-digital conversion module1, reverser and
Light emitting diode D2The illuminating circuit constituted is concatenated, illuminating circuit is showing the working condition of external control circuit.
The advantages and positive effects of the present invention are：
1, the present invention has carried out Curve guide impeller to heat type flow quantity detection switch, has output response rapid, and output pulsation is small,
Action is accurate, high reliability, and the temperature detection to machine oil is integrated in detection probe, installation to user and
Using bringing great convenience.
2, the present invention is also integrated with input power reverse connecting protection, input power overvoltage protection, defeated for flow measuring valve
Enter line under-voltage alarm, sensor failure alarm.
Description of the drawings
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the circuit diagram in apparatus of the present invention.
Specific implementation mode
The embodiment of the present invention is further described below in conjunction with attached drawing, it is emphasized that, following implementation is to say
Bright property, without being restrictive, it cannot be used as limitation of the invention in this embodiment.
A kind of engine motor oil cutout detection switch and temperature detection integrated apparatus, as shown in Figure 1, including stainless steel
Hollow hexagonal sensor base 13 made of material, is integrally formed with sensor mounting post 10, close on the right side of sensor base
The sensor mounting post root of sensor base is formed with installation external screw thread 11, wherein is bonded on sensor base right side
Gasket 12, there are two tapped mounting holes 9 for system in the right end face of sensor mounting post, are revolved respectively on mounting hole
Equipped with upper probe 3 and lower step probe 8, the left bottom that the connecting wire 1 that top and the bottom are popped one's head in is pierced by mounting hole is pacified through sensor
It is pierced by by left end face after sensor base after dress column and is connect with external control circuit 14, wherein in sensor base left-hand end
Waterproof connector 2 is installed in the conducting wire punched out in face, two chip sizes identical PCB6 is installed in the upper probe, every
The component side of PCB is close to the inner wall of small probe, and thermistor R is equipped on a piece of PCB24 and for heated thermistor
Heating resistor R35, thermistor R is only installed on another PCB1, temperature sensor 7 is installed in the lower probe,
The temperature sensing implement body uses pt100, for the temperature detection to machine oil；
As shown in Fig. 2, three line conductors of the pt100 and the outbound data end of external control circuit connect, institute's temperature-sensitive electricity
Hinder R1And thermistor R2Output and difference amplifier input terminal connect, while difference amplifier pass through by thermistor R1、
Thermistor R2, resistance R6, roughly adjusted rheostat R4And fine tuning resistance R5It is connect with 15v power modules after the electric bridge collectively formed, difference
The amplification factor selection of amplifier is very crucial, and difference amplifier obtains one most after market-ripe software calculates and emulates
Good amplification factor, to ensure that the minor change of medium flow in the case of temperature change can be detected reliably, 15v power supplys
Module connect external power interface with the 24v of external control circuit after power source protective module, and power source protective module realizes electricity
Reverse connecting protection, input power overvoltage protection and the supply voltage under-voltage protection in source, are connected in parallel on thermistor R2The heating electric at both ends
Hinder R3Powered by 15v power modules, the output of the difference amplifier after analog-to-digital conversion module, signal amplifier with relay
Connection, relay are used to control the working condition of the single-pole double-throw switch (SPDT) of external control circuit, while in analog-to-digital conversion module
Output end is connected with sensor failure alarm and is serially connected with light emitting diode D1, light emitting diode D2Reverser, the sensor
Failure Alarm device monitors the output voltage of analog-to-digital conversion module in real time, alarms after output voltage exceeds setting range, the hair
Optical diode D1Or light emitting diode D2It individually shines, shows the working condition of external control circuit.
Claims (4)
1. a kind of engine motor oil cutout detection switch and temperature detection integrated apparatus, it is characterised in that：Including stainless steel
Hollow hexagonal sensor base made of material, sensor mounting post is integrally formed on the right side of sensor base, close to sensing
The sensor mounting post root of device pedestal is formed with installation external screw thread, and there are two in band for system in the right end face of sensor mounting post
The mounting hole of screw thread is installed with upper probe and lower step probe respectively on two mounting holes, on, the connecting wire of lower probe
The left bottom for being pierced by mounting hole is pierced by and external control circuit company after sensor mounting post by sensor base left end face
It connecing, the component side that two chip sizes identical PCB, every PCB are equipped in the upper probe is close to the inner wall of upper probe,
Thermistor R is installed on a piece of PCB2And the heating resistor R for heated thermistor3, it is equipped on another PCB
Thermistor R1, pt100 is installed in the lower probe；
Three line conductors of the pt100 and the outbound data end of external control circuit connect, institute thermistor R1And thermistor R2
With resistance R6, roughly adjusted rheostat R4And fine tuning resistance R5Collectively form electric bridge, electric bridge after the power supply of 15v power modules with differential amplification
Device input terminal connects, and 15v power modules connect external power interface with the 24v of external control circuit after power source protective module
It connects, is connected in parallel on thermistor R2The heating resistor R at both ends3It is powered by 15v power modules, the output of the difference amplifier is through mould
It is connect with relay after number conversion module, signal amplifier, the single-pole double throw that relay is used to control on external control circuit is opened
The working condition of pass, while sensor failure alarm is connected on the output end of analog-to-digital conversion module, the sensor loses
Effect alarm monitors the output voltage of analog-to-digital conversion module in real time, alarms after output voltage exceeds setting range.
2. engine motor oil cutout detection switch according to claim 1 and temperature detection integrated apparatus, feature exist
In：It is bonded with gasket on the sensor base right side.
3. engine motor oil cutout detection switch according to claim 1 and temperature detection integrated apparatus, feature exist
In：It is further fitted with waterproof connector in the conducting wire punched out of the sensor base left end face.
4. engine motor oil cutout detection switch according to claim 1 and temperature detection integrated apparatus, feature exist
In：It is further connected with by light emitting diode D on the output end of the analog-to-digital conversion module1, reverser and light emitting diode D2
The illuminating circuit constituted is concatenated, illuminating circuit is showing the working condition of external control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810377029.XA CN108643987A (en) | 2018-04-25 | 2018-04-25 | Engine motor oil cutout detection switch and temperature detection integrated apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810377029.XA CN108643987A (en) | 2018-04-25 | 2018-04-25 | Engine motor oil cutout detection switch and temperature detection integrated apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108643987A true CN108643987A (en) | 2018-10-12 |
Family
ID=63747692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810377029.XA Pending CN108643987A (en) | 2018-04-25 | 2018-04-25 | Engine motor oil cutout detection switch and temperature detection integrated apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN108643987A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376223A (en) * | 2021-06-10 | 2021-09-10 | 西安爱生技术集团有限公司 | Oil gas real-time monitoring circuit for fuel assembly of small fuel unmanned aerial vehicle |
Citations (7)
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|---|---|---|---|---|
| CN1437697A (en) * | 2000-07-27 | 2003-08-20 | 株式会社日立制作所 | Thermal type air flowmeter |
| CN1834593A (en) * | 2005-03-18 | 2006-09-20 | 株式会社日立制作所 | Thermal flow meter |
| CN202176387U (en) * | 2011-06-16 | 2012-03-28 | 重庆隆鑫机车有限公司 | Engine oil position alarm and engine equipped therewith |
| CN103411644A (en) * | 2013-08-13 | 2013-11-27 | 苏州伊玛传感技术科研有限公司 | Probe of thermal type flow sensor |
| CN103712659A (en) * | 2013-12-28 | 2014-04-09 | 苏州谷之道软件科技有限公司 | Hot type air flow meter |
| CN105008870A (en) * | 2013-03-05 | 2015-10-28 | 日立汽车系统株式会社 | Hot-type fluid measurement device |
| CN107063368A (en) * | 2012-06-15 | 2017-08-18 | 日立汽车系统株式会社 | Thermal flowmeter |
-
2018
- 2018-04-25 CN CN201810377029.XA patent/CN108643987A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437697A (en) * | 2000-07-27 | 2003-08-20 | 株式会社日立制作所 | Thermal type air flowmeter |
| CN1834593A (en) * | 2005-03-18 | 2006-09-20 | 株式会社日立制作所 | Thermal flow meter |
| CN202176387U (en) * | 2011-06-16 | 2012-03-28 | 重庆隆鑫机车有限公司 | Engine oil position alarm and engine equipped therewith |
| CN107063368A (en) * | 2012-06-15 | 2017-08-18 | 日立汽车系统株式会社 | Thermal flowmeter |
| CN105008870A (en) * | 2013-03-05 | 2015-10-28 | 日立汽车系统株式会社 | Hot-type fluid measurement device |
| CN103411644A (en) * | 2013-08-13 | 2013-11-27 | 苏州伊玛传感技术科研有限公司 | Probe of thermal type flow sensor |
| CN103712659A (en) * | 2013-12-28 | 2014-04-09 | 苏州谷之道软件科技有限公司 | Hot type air flow meter |
Non-Patent Citations (1)
| Title |
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| 高振斌 等: "《基于热敏电阻的热式液体流量传感器》", 《仪表技术与传感器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376223A (en) * | 2021-06-10 | 2021-09-10 | 西安爱生技术集团有限公司 | Oil gas real-time monitoring circuit for fuel assembly of small fuel unmanned aerial vehicle |
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Application publication date: 20181012 |
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