CN204788767U - Car barometer sensor - Google Patents
Car barometer sensor Download PDFInfo
- Publication number
- CN204788767U CN204788767U CN201520532564.XU CN201520532564U CN204788767U CN 204788767 U CN204788767 U CN 204788767U CN 201520532564 U CN201520532564 U CN 201520532564U CN 204788767 U CN204788767 U CN 204788767U
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- CN
- China
- Prior art keywords
- silicon
- circuit board
- treatment circuit
- level silicon
- wiring pin
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- 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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 47
- 239000010703 silicon Substances 0.000 claims abstract description 47
- 210000002808 connective tissue Anatomy 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a car barometer sensor, including the casing and set up one -level silicon, secondary treatment circuit board and the sealing washer in the casing, the one end of casing is provided with the plug, and the other end is provided with the gas pocket, the one -level silicon including with the silicon adventitia that the gas pocket is relative, be provided with between one -level silicon and the plug secondary treatment circuit board, the one -level silicon with the secondary treatment circuit passes through the wire and connects, secondary treatment circuit board with the plug passes through the wire and connects. This application is through setting up the one -level silicon in the casing to through silicon adventitia and the wheatstone bridge circuit module on the one -level silicon, and the one -level chip carries the main chip for secondary treatment circuit board to carry on exporting the signal, there is the pointing accuracy of enough effectual improvement car manometer after voltage signal enlargies.
Description
Technical field
The utility model belongs to automotive sensor technology field, refers to a kind of for automobile pressure table sensor especially.
Background technology
Truck brake adopts air-pressure brake form, and whether braking pressure value needs to show on rain glass, make driver's moment pay close attention to braking pressure value size normal.Rain glass sensor is the key components and parts measuring braking pressure.
In order to control cost, traditional rain glass sensor adopts resistance strain type pressure sensor: this sensor is generally made up of sensitive grid, substrate, lead-in wire, cover plate etc.Sensitive grid is a resistive element, is the non-sensitive part that resistance strain gage experiences component strain.Sensitive grid bonding agent is fixed in substrate.The effect of substrate should ensure to be delivered to sensitive grid exactly to get on component strains.Sensitive grid utilizes electrical bridge principle, and when different pressure, sensitive grid deflection is different, and the resistance value that electric bridge exports is different.This kind of sensor is owing to changing resistance value by sensitive grid distortion merely, and precision is poor, and automobile pressure table pointing accuracy is also deteriorated.
Utility model content
The purpose of this utility model is the weak point overcoming existing pressure transducer, and provide a kind of new automobile pressure table sensor, this sensor effectively can improve the pointing accuracy of automobile pressure table.
The utility model is achieved through the following technical solutions:
A kind of automobile pressure table sensor, includes housing, one-level silicon, two stage treatment circuit board and O-ring seal;
Described one-level silicon, described two stage treatment circuit board and described O-ring seal are all arranged in described housing; One end of described housing is provided with plug, and the other end is provided with pore;
Described one-level silicon includes silicon adventitia; Described silicon adventitia is relative with described pore; Described O-ring seal is provided with between described pore and described one-level silicon; Described two stage treatment circuit board is provided with between described one-level silicon and plug; Described one-level silicon is connected by wire with described two stage treatment circuit board;
Described two stage treatment circuit board is connected by wire with described plug.
Described one-level silicon includes wheatstone bridge circuits module.
Described two stage treatment circuit board includes power supply processing module and master chip; Described master chip at least includes voltage signal amplification circuit module.
Described master chip also includes internal memory module.
Include at least three wiring pins in described plug, be respectively the first wiring pin, the second wiring pin and the 3rd wiring pin; Described first wiring pin is connected with car load ground wire; Described second wiring pin is connected with described master chip; Described 3rd wiring pin connects described master chip and described power supply processing module respectively.
The beneficial effects of the utility model are:
The application by arranging one-level silicon in housing, and by the silicon adventitia on one-level silicon and wheatstone bridge circuits, and the master chip that one-level chip transmits signal to two stage treatment circuit board carries out exporting after voltage signal amplifies, and has the pointing accuracy enough effectively improving automobile pressure table.
Accompanying drawing explanation
Fig. 1 is the utility model sensor construction schematic diagram;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is the silicon outer membrane structure schematic diagram on one-level silicon;
Fig. 4 is the utility model plug and power supply processing module circuit theory diagrams;
Fig. 5 is the utility model master chip circuit theory diagrams;
Fig. 6 is the utility model one-level silicon circuit theory diagrams.
Description of reference numerals
1 housing, 2 one-level silicons, 3 two stage treatment circuit boards, 4 O-ring seals, 5 plugs, 6 pores, 21 silicon adventitias, 22INM wiring pin, 23INP wiring pin, 24BDR wiring pin, 51 first wiring pins, 52 second wiring pins, 53 the 3rd wiring pins, 54 the 4th wiring pins, U1 power supply processing module, U2 master chip.
Embodiment
Describe the technical solution of the utility model in detail by the following examples, following embodiment is only exemplary, only can be used for explaining and the technical solution of the utility model being described, and can not be interpreted as being the restriction to technical solutions of the utility model.
The utility model provides a kind of automobile pressure table sensor, as shown in 1 to Fig. 3, includes housing 1, one-level silicon 2, two stage treatment circuit board 3 and O-ring seal 4;
Described one-level silicon 2, described two stage treatment circuit board 3 and described O-ring seal 4 are all arranged in described housing 1; One end of described housing 1 is provided with plug 5, and the other end is provided with pore 6;
Described one-level silicon 2 includes silicon adventitia 21 and wheatstone bridge circuits module; Described silicon adventitia 21 is relative with described pore 6; Described O-ring seal 4 is provided with between described pore 6 and described one-level silicon 2; Air pressure signal enters in sensor housing by pore, air pressure signal compressing silicon adventitia, silicon adventitia is made to produce distortion, this distortion makes the resistance value of wheatstone bridge circuits module change, the change of this resistance value makes the voltage of one-level silicon change, and two stage treatment circuit board is exported in the change of this voltage.
Described two stage treatment circuit board 3 is provided with between described one-level silicon 2 and plug 5; Described one-level silicon 2 is connected by wire with described two stage treatment circuit board 3;
Described two stage treatment circuit board 3 is connected by wire with described plug 5.
Described two stage treatment circuit board 3 includes power supply processing module U1 and master chip U2; Wherein the object of power supply processing module is for sensor provides reliable and stable power supply.Described master chip U2 at least includes voltage signal amplification circuit module, the voltage change signal from one-level silicon amplifies by master chip, adjust zero-bit etc. after export.
Described master chip also includes internal memory module.
In the present embodiment, as shown in Figures 4 to 6, in described plug 5, include four wiring pins, be respectively the first wiring pin 51, second wiring pin 52, the 3rd wiring pin 53 and the 4th wiring pin 54; Described first wiring pin is connected with car load ground wire; Described second wiring pin is connected with described master chip, amplifies the signal after process for exporting master chip; Described 3rd wiring pin connects described master chip and described power supply processing module respectively; 3rd wiring pin provides working sensor voltage for car load, through the process of power supply process chip U1, can the reliable 5 ± 0.5V voltage of stable output, the 3rd wiring pin is corresponding with the VCC wiring pin of master chip U2, and the 3rd wiring pin is connected with the VDD wiring pin on master chip U2 simultaneously.4th wiring pin 54 is the vacant wiring pin of sensor.
VDD wiring pin on master chip U2 provides operating voltage for master chip; VDDF wiring pin is that master chip internal storage (EEPROM) provides operating voltage, and its operating voltage range is 5 ± 0.5V; No. 3 pin VSS are negative pole.No. 2 pin are signal output function, and it carries out in parallel with No. 11 pin DIO, and wherein No. 11 pin are numeral input, output function.
Fig. 6 is one-level silicon circuit symbol schematic diagram, and one-level silicon circuit has three pins to be connected with master chip U2: INM wiring pin 22, BDR wiring pin 24 and INP wiring pin 23.INM wiring pin function is electric bridge negative input end, and BDR wiring pin function is bridge-drive, and INP wiring pin function is electric bridge positive input terminal.
The above is only the description of the preferred implementation of utility model; should be understood that; due to the finiteness of literal expression; and objectively there is unlimited concrete structure; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. an automobile pressure table sensor, is characterized in that: include housing, one-level silicon, two stage treatment circuit board and O-ring seal;
Described one-level silicon, described two stage treatment circuit board and described O-ring seal are all arranged in described housing; One end of described housing is provided with plug, and the other end is provided with pore;
Described one-level silicon includes silicon adventitia; Described silicon adventitia is relative with described pore; Described O-ring seal is provided with between described pore and described one-level silicon; Described two stage treatment circuit board is provided with between described one-level silicon and plug; Described one-level silicon is connected by wire with described two stage treatment circuit board;
Described two stage treatment circuit board is connected by wire with described plug.
2. automobile pressure table sensor according to claim 1, is characterized in that: described one-level silicon includes wheatstone bridge circuits module.
3. automobile pressure table sensor according to claim 1, is characterized in that: described two stage treatment circuit board includes power supply processing module and master chip; Described master chip at least includes voltage signal amplification circuit module.
4. automobile pressure table sensor according to claim 3, is characterized in that: described master chip also includes internal memory module.
5. automobile pressure table sensor according to claim 3, is characterized in that: include at least three wiring pins in described plug, is respectively the first wiring pin, the second wiring pin and the 3rd wiring pin; Described first wiring pin is connected with car load ground wire; Described second wiring pin is connected with described master chip; Described 3rd wiring pin connects described master chip and described power supply processing module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532564.XU CN204788767U (en) | 2015-07-20 | 2015-07-20 | Car barometer sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532564.XU CN204788767U (en) | 2015-07-20 | 2015-07-20 | Car barometer sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204788767U true CN204788767U (en) | 2015-11-18 |
Family
ID=54528787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520532564.XU Expired - Fee Related CN204788767U (en) | 2015-07-20 | 2015-07-20 | Car barometer sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204788767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424272A (en) * | 2015-12-28 | 2016-03-23 | 黄山迈普汽车部件有限公司 | vacuum degree sensor suitable for plateau |
| CN108548630A (en) * | 2018-04-05 | 2018-09-18 | 宁波依诺汽车电子有限公司 | Car force sensor |
-
2015
- 2015-07-20 CN CN201520532564.XU patent/CN204788767U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424272A (en) * | 2015-12-28 | 2016-03-23 | 黄山迈普汽车部件有限公司 | vacuum degree sensor suitable for plateau |
| CN108548630A (en) * | 2018-04-05 | 2018-09-18 | 宁波依诺汽车电子有限公司 | Car force sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190720 |