CN201859031U - Null point compensation non-signal-amplification electronic type engine oil pressure sensor - Google Patents
Null point compensation non-signal-amplification electronic type engine oil pressure sensor Download PDFInfo
- Publication number
- CN201859031U CN201859031U CN2010202602563U CN201020260256U CN201859031U CN 201859031 U CN201859031 U CN 201859031U CN 2010202602563 U CN2010202602563 U CN 2010202602563U CN 201020260256 U CN201020260256 U CN 201020260256U CN 201859031 U CN201859031 U CN 201859031U
- Authority
- CN
- China
- Prior art keywords
- oil pressure
- engine oil
- signal
- electronic type
- type engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model is an null point compensation non-signal-amplification electronic type engine oil pressure sensor, collecting engine oil pressure signals by a MEMS pressure sensitive chip (4), wherein the signals are outputted directly by an instrument after processing by a signal processing device. The sensor is provided with a screwed joint base (5) connected with the bottom of a housing (2); a filter metal mesh (8), the MEMS pressure sensitive chip (4), a circuit board (7) and a socket board (1) are arranged from bottom to top in a cavity formed by the top of the screwed joint base inside the housing; the screwed joint base (5) is provided with a through hole (6) in the middle, wherein the through hole is communicated with the inner of the housing (2); the MEMS pressure sensitive chip (4) is arranged on the circuit board (7); and the socket board (1) is connected with the circuit board (7) through a conductor. The pressure sensor can directly drive an instrument, and has advantages of stable and reliable performance, high precision, long service life, simple circuit structure, low cost and compact conformation.
Description
Technical field
The utility model relates to automotive electronics detection technique field, the electronic type engine oil pressure pickup that particularly a kind of zero compensation no signal is amplified.
Background technology
The present engine oil pressure pickup that on automobile and diesel vehicle, generally uses, its design concept is to utilize the metallic membrane compressive deformation, promote cursor slide by a cover complicated mechanical devices and slide on slide wire resistance, the slide wire resistance value is changed, the electric current that changes the tensimeter coil is with detected pressures.The defective of its structural design is: because the plasticity and the reminiscence characteristic of sensing element metallic membrane, its stability and fatigue resistence are relatively poor; The slip plate portion adopts Ф 0.08 constantan wire, and brush is Ф 0.12 a silvery white copper, and this structure makes the wearing quality of line plate slipper relatively poor; Pressure alarm partly adopts the sliding contact form, and warning bulb cold-state resistance is very little, and the temporary impact electric current is very big, easily produces electric arc during frequent power on/off and burns out alarm actuating contact.
The inadequate natural endowment of these designs, add influence of various factors such as the engine manufacture level of China and road conditions, caused mechanical type engine oil pressure pickup mechanical fault many (as brush, slide wire resistance wearing and tearing and ablation, alarm actuating contact wearing and tearing, the anti-vibration performance is poor), standardization level is low, and the life-span is limited etc.
Summary of the invention
Technical problem to be solved in the utility model is: the electronic type engine oil pressure pickup that provides a kind of zero compensation no signal to amplify, and with the existing defective of the engine oil pressure pickup that overcomes present use.
The technical scheme that its technical matters that solves the utility model adopts is: by MEMS presser sensor chip harvester oil pressure signal, this engine oil pressure signal directly connects instrument output after signal processing means processes.Concrete structure is: be provided with the threaded connector pedestal that links to each other with outer casing bottom, in the top and the formed cavity of enclosure of threaded connector pedestal, be furnished with filtering metal net, MEMS presser sensor chip, circuit board and socket from bottom to top successively, wherein, there is through hole at threaded connector pedestal middle part, and this through hole is connected with the inside of shell; The MEMS presser sensor chip is installed on the circuit board; Socket is by lead connecting circuit plate.
The utility model is compared with existing electronic type engine oil pressure pickup has following major advantage:
1. owing to adopted the MEMS presser sensor chip, and adopted 10 single-chip microcomputers or 12 single-chip microcomputers, made circuit structure simple, reduced the cost of product as sensor.
2. owing to having adopted the MEMS presser sensor chip to have temperature compensation function, higher more than 10 times than foil gauge to the pressure change sensitivity, improved precision.
3. owing to used single-chip microcomputer that sensor output signal is handled, replace sensor special IC compensating circuit with the software compensation algorithm, but the backoff algorithm online programming, thus make it stable and reliable for performance, long service life.
4. compact conformation rationally, can directly drive conventional instrument, stepper motor instrument or virtual instrument.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is to use the single-chip microcomputer work block diagram of 10 A/D.
Among the figure: 1. socket; 2. shell; 3. pad; 4.MEMS presser sensor chip; 5. threaded connector pedestal; 6. through hole; 7. circuit board; 8. filtering metal net.
Embodiment
The electronic type engine oil pressure pickup that the zero compensation no signal that the utility model provides is amplified, it is by MEMS presser sensor chip harvester oil pressure signal, and this engine oil pressure signal directly connects instrument output after signal processing means processes.
Below in conjunction with accompanying drawing and example the utility model is described in further details.
The electronic type engine oil pressure pickup that zero compensation no signal that the utility model provides is amplified, its structure be as depicted in figs. 1 and 2: be provided with threaded connector pedestal 5, its upper end links to each other with the bottom thread of hollow shell 2.In the top and shell 2 inner formed cavitys of threaded connector pedestal 5, be furnished with filtering metal net 8, MEMS presser sensor chip 4, circuit board 7 and socket 1 from bottom to top successively, wherein: there is through hole 6 at threaded connector pedestal 5 middle parts, and this through hole is connected with the inside of shell 2; Circuit board 7 is placed on the groove the inside of socket 1, adjusts socket 1 position with pad 3; MEMS presser sensor chip 4 is installed on the circuit board 7; Socket 1 is by lead connecting circuit plate 7.There are 6 latches to transmit unlike signal respectively on the socket.
Described circuit board 7 is except being equipped with MEMS presser sensor chip and signal processing apparatus, also be provided with the signal processing apparatus of routine shown in Figure 3, the composition of this signal processing apparatus comprises temperature sensing circuit, amplifying circuit, warning circuit and the instrument that links to each other with signal processing apparatus.Signal processing apparatus is made up of single-chip microcomputer, A/D converter and PWM modulator, and A/D converter is linked to each other with the single-chip data interface respectively by data line with the PWM modulator.The MEMS chip collects the engine oil pressure signal, imports single-chip microcomputer after treatment, by directly driving instrument behind the single-chip microcomputer online programming.Circuit board is transferred to various signals on the socket 1 respectively by lead.
Described filtering metal net 8 can adopt the metal filter screen of one deck, two-layer or multilayer.
Assembling process of the present utility model is: earlier filtering metal net 8 is placed on the threaded connector pedestal 5, up again circuit board 7 and the MEMS presser sensor chip 4 that is attached thereto are placed on the groove the inside of socket 1, adjust socket 1 position with pad 3, then shell 2 is connected with threaded connector pedestal 5 upper ends, and fixes by bayonet lock.Socket 1 usefulness lead connecting circuit plate 7.
When the utility model uses, earlier threaded connector pedestal 5 is installed on the machine oil base by screw thread, machine oil is entered in the MEMS presser sensor chip 4 by through hole 6 then, after 8 filterings of filtering metal net, MEMS presser sensor chip 4 can the machines oil pressure, thereby is transferred on the circuit board 7.The engine oil pressure signal that detects, directly drives instrument and exports corresponding force value after 10 A/D single-chip microcomputers processing or directly using 12 A/D single-chip microcomputers that signal is carried out the pwm modulation by after the signal processing apparatus collection on the circuit board 7 and amplifying.
When the engine oil pressure signal of MEMS presser sensor chip 4 collections was lower than a thresholding, alarm sound was sent in the pressure alarm functional circuit work that sets on the circuit board 7, reminded the driver in time to replenish machine oil, guaranteed the motor car engine operate as normal.
The utility model functional reliability height, the moment can both be reflected the force value of machine oil truly, prevents that motor car engine from causing fault because of lacking machine oil.
Claims (8)
1. the electronic type engine oil pressure pickup that amplifies of a zero compensation no signal, it is characterized in that by MEMS presser sensor chip (4) harvester oil pressure signal, this engine oil pressure signal directly connects instrument output after signal processing means processes, concrete structure is: be provided with the threaded connector pedestal (5) that links to each other with shell (2) bottom, in the top and the inner formed cavity of shell (2) of threaded connector pedestal (5), be furnished with filtering metal net (8) from bottom to top successively, MEMS presser sensor chip (4), circuit board (7) and socket (1), wherein, there is through hole (6) at threaded connector pedestal (5) middle part, and this through hole is connected with the inside of shell (2); MEMS presser sensor chip (4), it is installed on the circuit board (7); Socket (1) is by lead connecting circuit plate (7).
2. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 1 is amplified, it is characterized in that: signal processing apparatus is made up of single-chip microcomputer, A/D converter and PWM modulator, and A/D converter is linked to each other with the single-chip data interface respectively by data line with the PWM modulator.
3. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 2 is amplified is characterized in that: described single-chip microcomputer adopts 10 A/D single-chip microcomputers.
4. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 2 is amplified is characterized in that: described single-chip microcomputer adopts 12 A/D single-chip microcomputers.
5. modified electronic type engine oil pressure pickup according to claim 1 is characterized in that: circuit board (7) is placed on the groove the inside of socket (1), adjusts socket (1) position with pad (3).
6. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 1 is amplified is characterized in that: filtering metal net (8) is the metal filter screen of one deck, two-layer or multilayer.
7. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 1 is amplified is characterized in that: shell (2) fixes by bayonet lock with after threaded connector pedestal (5) links to each other.
8. the electronic type engine oil pressure pickup that zero compensation no signal according to claim 1 is amplified, it is characterized in that: socket (1) is provided with 6 latches that are used to transmit unlike signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202602563U CN201859031U (en) | 2010-07-15 | 2010-07-15 | Null point compensation non-signal-amplification electronic type engine oil pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202602563U CN201859031U (en) | 2010-07-15 | 2010-07-15 | Null point compensation non-signal-amplification electronic type engine oil pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859031U true CN201859031U (en) | 2011-06-08 |
Family
ID=44104835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202602563U Expired - Fee Related CN201859031U (en) | 2010-07-15 | 2010-07-15 | Null point compensation non-signal-amplification electronic type engine oil pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077753A (en) * | 2022-08-11 | 2022-09-20 | 江苏航运职业技术学院 | Overload self-starting pressure sensor and use method thereof |
-
2010
- 2010-07-15 CN CN2010202602563U patent/CN201859031U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115077753A (en) * | 2022-08-11 | 2022-09-20 | 江苏航运职业技术学院 | Overload self-starting pressure sensor and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2008333290B2 (en) | Integrated pressure and level sensor of a cooling fluid and engine comprising said sensor | |
| CN201859031U (en) | Null point compensation non-signal-amplification electronic type engine oil pressure sensor | |
| CN2839604Y (en) | Conjunctive sensor device for monitoring temperature and pressure | |
| CN102798649A (en) | Liquid leakage detector | |
| CN201740620U (en) | Modulated electronic oil pressure sensor adopting hardware PWM | |
| CN201416467Y (en) | Machine oil pressure warning sensor | |
| CN202126325U (en) | Switching value differential pressure sensor | |
| CN207163634U (en) | A kind of differential pressure pickup | |
| CN104614116B (en) | Marine diesel pressure transducer | |
| CN201561837U (en) | Engine oil pressure alarm sensor for automobiles and tractors | |
| CN207541139U (en) | Current sensor | |
| CN201653631U (en) | Electronic oil pressure sensor | |
| CN201946437U (en) | Movable electrode of variable capacitor, pressure sensor and electronic pressure gauge | |
| CN2650097Y (en) | Engine oil pressure sensor | |
| CN201210099Y (en) | Electronic automobile machine oil pressure sensor | |
| CN101368863B (en) | Pressure sensor | |
| CN203879571U (en) | Lubrication indication device of motorcycle engine | |
| CN209570273U (en) | A kind of smaller head mount type temperature transmitting module | |
| CN209240884U (en) | A kind of easy-to-dismount automobile electronic combined instrument | |
| CN205352470U (en) | Detect probe of quality of water | |
| CN202544954U (en) | Compatible step motor instrument and electronic engine oil pressure sensor of moving coil instrument | |
| CN204419289U (en) | Electronic oil pressure sensor | |
| CN201517953U (en) | Pressure sensor of air processing unit for commercial vehicle | |
| CN108645558A (en) | A kind of car force sensor | |
| CN217359705U (en) | Dew point detection device of air compressor and air compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20120715 |