CN109696273B - Automobile brake boosting vacuum pressure sensor device - Google Patents
Automobile brake boosting vacuum pressure sensor device Download PDFInfo
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- CN109696273B CN109696273B CN201910168279.7A CN201910168279A CN109696273B CN 109696273 B CN109696273 B CN 109696273B CN 201910168279 A CN201910168279 A CN 201910168279A CN 109696273 B CN109696273 B CN 109696273B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to an automobile brake boosting vacuum degree pressure sensor device which comprises a shell, wherein a cavity is formed in the shell, and a first air nozzle and a second air nozzle are further arranged on the shell; the surface of the shell is provided with a cavity, the bottom of the cavity is provided with a communication hole communicated with the cavity, and a circuit substrate is arranged in the cavity; the circuit substrate is provided with a gauge pressure chip for measuring the difference value between the internal pressure and the external pressure of the automobile booster and an absolute pressure chip for measuring the absolute pressure value of atmosphere; the cover plate is arranged on the cavity, an accommodating cavity is formed between the cover plate and the cavity, the cover plate is provided with a vent nozzle, and the vent nozzle is provided with a waterproof breathable film and a dustproof cap; the shell is also provided with an electrical connector, and the electrical connector is connected with the circuit substrate. The invention can simultaneously detect the pressure value of the automobile brake booster and the external real-time atmospheric pressure value, and solves the problem that the current pressure value of the automobile brake booster cannot be accurately detected when the external environmental pressure value changes.
Description
Technical Field
The invention relates to a vacuum degree pressure sensor, in particular to an automobile brake boosting vacuum degree pressure sensor device.
Background
In the current vacuum degree detection technical field, a detection object in the field comprises an automobile brake booster, a traditional vacuum degree pressure sensor is directly arranged on a booster of an automobile (or other machines), and the pressure difference value (relative pressure intensity of difference inside and outside the booster) of vacuum inside the booster relative to the external environment of the booster can be directly measured. Although the sensor technology is increasingly perfected, the currently used vacuum degree pressure sensor in the field can only detect the pressure value of the automobile vacuum booster through the pressure difference, namely the pressure difference between the atmospheric pressure and the vacuum booster. However, as the altitude changes, the atmospheric pressure also changes along with the altitude change, so that the current pressure value of the automobile brake vacuum booster cannot be accurately detected. Therefore, the detection of the vacuum degree pressure sensor is not facilitated, and the risk of sensor failure is increased.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a vacuum degree pressure sensor device for automobile brake booster, which can simultaneously detect a pressure value of the automobile brake booster and an external real-time atmospheric pressure value, and solve the problem that the current pressure value of the automobile brake booster cannot be accurately detected when the external environmental pressure value changes.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an automobile brake helping hand vacuum pressure sensor device which characterized in that: the air faucet comprises a shell, wherein a cavity is formed in the shell, a first air faucet and a second air faucet are further arranged on the shell, and the first air faucet and the second air faucet are both communicated with the cavity; the surface of the shell is provided with a cavity, and the bottom of the cavity is provided with a communicating hole communicated with the cavity; a circuit substrate is arranged in the cavity and is bonded to the bottom of the cavity in a sealing mode through glue; the circuit substrate is provided with a through hole communicated with the communicating hole, the circuit substrate is provided with a gauge pressure chip for measuring the difference value between the internal pressure and the external pressure of the automobile booster and an absolute pressure chip for measuring the absolute pressure value of atmosphere, and the gauge pressure chip is hermetically connected to the through hole; the cover plate is arranged on the cavity, the cover plate is hermetically bonded with the shell through glue, a containing cavity is formed between the cover plate and the cavity, the cover plate is provided with a vent nozzle, and the vent nozzle is provided with a waterproof breathable film and a dustproof cap; the shell is also provided with an electrical connector, and the electrical connector is connected with the circuit substrate.
Furthermore, the gauge pressure chip is an integrated chip, integrates a pressure element and a processing element and is used for detecting the difference value of the internal pressure and the external pressure of the automobile brake booster; the absolute pressure chip is an integrated chip, integrates a pressure element and a processing element and is used for detecting the current atmospheric absolute pressure value.
Further, the gauge pressure chip and the absolute pressure chip are both pressure chips and are used for collecting corresponding pressure values; the circuit substrate is also provided with a processing chip for processing the pressure value.
Further, the gauge pressure chip and the absolute pressure chip are both pressure chips and are used for collecting corresponding pressure values; and the circuit substrate is also provided with two processing chips which are respectively used for processing pressure values collected by the gauge pressure chip and the absolute pressure chip.
Furthermore, a protection frame body is arranged on the circuit substrate, the gauge pressure chip and the absolute pressure chip are surrounded by the protection frame body, and the gauge pressure chip and the absolute pressure chip are encapsulated in the protection frame body through protection glue.
Further, the cover plate is also provided with an air vent, and the air vent is sealed by using steel balls.
Furthermore, the second air nozzle and the shell are of a split structure, and a one-way valve is arranged between the second air nozzle and the shell.
Further, the second air tap is a plastic inverted bamboo joint structure or a plastic inverted bamboo joint with an O-shaped ring.
Furthermore, the circuit substrate is connected with the electric appliance connector through a bonding aluminum wire, a welding lead or a welding pin.
Furthermore, the circuit substrate is made of a ceramic plate, an aluminum substrate, a PCB (printed Circuit Board) or a flexible plate.
The invention has the beneficial effects that: the invention can simultaneously detect the pressure value of the automobile brake booster and the external real-time atmospheric pressure value, and solves the problem that the current pressure value of the automobile brake booster cannot be accurately detected when the external environmental pressure value changes. The invention can detect the difference between the internal pressure and the external pressure of the booster and output the pressure value under the current environment, and after the two different data are provided for the ECU, the ECU judges the change of the environmental air pressure, thereby providing different braking strategies and ensuring that the vehicle can meet the braking requirements under the plateau road condition. The vacuum degree sensor has the advantages of simple structure, convenience in installation and strong specialization, and the two sensors are combined into one, so that the vacuum degree sensor is strong in practicability. The invention is a double-module design, and the output signal is a double-path signal.
Drawings
Fig. 1 is a first perspective view of the present invention.
Fig. 2 is a second perspective view of the present invention.
Fig. 3 is a third perspective view of the present invention.
Fig. 4 is a fourth perspective view of the present invention.
Fig. 5 is a disassembled schematic view of fig. 4.
Fig. 6 is a schematic view of the housing.
Fig. 7 is a schematic sectional view taken along line a-a in fig. 4.
Fig. 8 is a schematic sectional view taken along line B-B in fig. 4.
Fig. 9 is a first schematic view of the arrangement of an absolute pressure chip and a gage pressure chip on a circuit substrate.
Fig. 10 is a second schematic view of the arrangement of the absolute pressure chip and the gage pressure chip on the circuit substrate.
Fig. 11 is a first schematic diagram of the chip arrangement on the circuit substrate.
Fig. 12 is a second schematic diagram of the chip layout on the circuit substrate.
Fig. 13 is a first schematic view of the connection between the circuit substrate and the electrical connector (the left side of the figure is a schematic cross-sectional view, and the right side is a corresponding schematic top view).
Fig. 14 is a second schematic diagram (the left side of the figure is a schematic cross-sectional view, and the right side is a corresponding schematic top view) of the connection between the circuit substrate and the electrical connector.
Fig. 15 is a third schematic view (the left side of the figure is a schematic cross-sectional view, and the right side is a corresponding schematic top view) of the connection between the circuit substrate and the electrical connector.
In the figure:
1. the device comprises a shell, 11, a cavity, 12, a cavity, 13 and a communication hole;
2. the device comprises an electrical connector 21, a PIN needle 22, a bonding aluminum wire 23, a welding wire 24 and a welding PIN;
3. a first air tap;
4. a second air nozzle 41, an O-shaped ring 42 and a one-way valve;
5. the cover plate 51, the dustproof cap 52, the vent nozzle 53, the vent hole 54, the steel ball 55 and the waterproof breathable film;
6. the pressure chip comprises a circuit substrate, 61, a gauge pressure chip, 62, an absolute pressure chip, 63, a protective frame body, 64, a through hole, 65, a pressure chip, 66 and a processing chip.
Detailed Description
For a better understanding of the present invention, the technical solutions of the present invention are further described below with reference to the following examples and the accompanying drawings (as shown in fig. 1 to 15).
As shown in fig. 1, 2, 3, 4, and 5, an automobile brake boosting vacuum degree pressure sensor device includes a housing 1 (as shown in fig. 6), a cavity 11 (as shown in fig. 7 and 8) is disposed inside the housing 1, a first air nozzle 3 and a second air nozzle 4 are further disposed on the housing 1, and both the first air nozzle 3 and the second air nozzle 4 are communicated with the cavity 11 (the first air nozzle 3 is used for introducing a fluid to be measured); second air cock 4 is for the components of a whole that can function independently structure (through buckle form or threaded connection, still perhaps through high temperature resistant corrosion resistance glue bonding) with casing 1, be equipped with check valve 42 between second air cock 4 and the casing 1. As shown in fig. 1 and 4, the second air faucet 4 is of a plastic inverted bamboo joint structure or a plastic inverted bamboo joint with an O-ring 41. As shown in FIG. 7, check valve 42 protects the pressure of the fluid in cavity 11, and if the pressure of the fluid in cavity 11 is lower than the pressure of the fluid in second nozzle 4, check valve 42 is closed, and the fluid in cavity 11 will not flow into second nozzle 4.
As shown in fig. 5 and 6, a cavity 12 is arranged on the surface of the housing 1, and a communication hole 13 communicated with the cavity 11 is arranged at the bottom of the cavity 12; the circuit board 6 is arranged inside the cavity 12, and the circuit board 6 is hermetically bonded at the bottom of the cavity 12 through high-temperature-resistant and corrosion-resistant glue.
As shown in fig. 8, a through hole 64 communicated with the communicating hole 13 is arranged on the circuit substrate 6, a gauge pressure chip 61 for measuring the difference between the internal pressure and the external pressure of the automobile booster and an absolute pressure chip 62 for measuring the absolute pressure value of atmosphere are arranged on the circuit substrate 6 (the circuit substrate 6 is made of a ceramic plate, an aluminum substrate, a PCB or a flexible plate, and the corresponding connection modes include a bonding pad and a through hole; as shown in fig. 9 and 10, the gauge pressure chip 61 and the absolute pressure chip 62 can be arranged transversely or longitudinally according to specific requirements), and the gauge pressure chip 61 is hermetically connected to the through hole 64; the circuit substrate 6 is connected with a protective frame 63 through high-temperature-resistant and corrosion-resistant glue in a sealing mode, the protective frame 63 surrounds the gauge pressure chip 61 and the absolute pressure chip 62, and the gauge pressure chip 61 and the absolute pressure chip 62 are encapsulated in the protective frame 63 through protective glue.
As shown in fig. 10, the gauge pressure chip 61 is an integrated chip, and is integrated with a pressure element and a processing element (communicated with the automobile brake booster through the cavity 11) for detecting the difference between the internal pressure and the external pressure of the automobile brake booster; the absolute pressure chip 62 is an integrated chip, and integrates a pressure element and a processing element (communicated with the atmosphere) for detecting the current absolute pressure value of the atmosphere; alternatively, as shown in fig. 11, both the gauge pressure chip 61 and the absolute pressure chip 62 are pressure chips, and are configured to collect corresponding pressure values; the circuit substrate 6 is further provided with a processing chip 66 for processing (including amplifying and compensating) the pressure value; or, as shown in fig. 12, both the gauge pressure chip 61 and the absolute pressure chip 62 are pressure chips, and are configured to collect corresponding pressure values; the circuit substrate 6 is further provided with two processing chips 66, which are respectively used for processing (including amplifying and compensating) the pressure values collected by the gauge pressure chip 61 and the absolute pressure chip 62.
As shown in fig. 5, a cover plate 5 is arranged on the cavity 12, the cover plate 5 is hermetically bonded with the housing 1 through high temperature resistant and corrosion resistant glue, a containing cavity is formed between the cover plate 5 and the cavity 12, a vent nozzle 52 is arranged on the cover plate 5, and a waterproof and breathable film 55 and a dustproof cap 51 are arranged on the vent nozzle 52; the dust cap 51 is connected with the air vent nozzle 52 through an inverted structure. The cover plate 5 is also provided with a vent hole 53, the vent hole 53 is sealed by using a 316L steel ball 54, because glue is adopted in many connection modes of the device and needs to be baked in the manufacturing process, and the vent hole 53 is exhausted in the baking process.
As shown in fig. 8, an electrical connector 2 is further disposed on the housing 1, and the electrical connector 2 is connected to the circuit board 6. As shown in fig. 13, 15 and 15, the circuit substrate 6 is connected to the electrical connector 2 through a bonding aluminum wire 22, a bonding wire 23 or a bonding pin 24.
As shown in fig. 1, 2 and 3, the housing 1 is a rectangular parallelepiped, wherein a cavity 12 is formed in an upper surface of the housing, the electrical connector 2 is disposed on a right side surface of the housing, the second air nozzle 4 is disposed on a side surface of the housing, and the first air nozzle 3 is disposed on any surface of the other three surfaces.
The principle of the invention is as follows: the invention is a double-module design (the output signal is a double-path signal), not only can detect the difference between the internal pressure and the external pressure of the booster, but also can output the pressure value under the current environment, after the two different data are provided for the ECU, the ECU judges the change of the environmental pressure, thereby providing different braking strategies, and ensuring that the vehicle can meet the braking requirements under the plateau road condition.
The above description is only an application example of the present invention, and certainly, the present invention should not be limited by this application, and therefore, the present invention is still within the protection scope of the present invention by equivalent changes made in the claims of the present invention.
Claims (10)
1. The utility model provides an automobile brake helping hand vacuum pressure sensor device which characterized in that: the air faucet comprises a shell (1), wherein a cavity (11) is formed in the shell (1), a first air faucet (3) and a second air faucet (4) are further arranged on the shell (1), and the first air faucet (3) and the second air faucet (4) are both communicated with the cavity (11); a cavity (12) is arranged on the surface of the shell (1), and a communicating hole (13) communicated with the cavity (11) is formed in the bottom of the cavity (12); a circuit substrate (6) is arranged in the cavity (12), and the circuit substrate (6) is sealed and bonded at the bottom of the cavity (12) through glue; the circuit board (6) is provided with a through hole (64) communicated with the communicating hole (13), the circuit board (6) is provided with a gauge pressure chip (61) used for measuring the difference value of the internal pressure and the external pressure of the automobile booster and an absolute pressure chip (62) used for measuring the absolute pressure value of atmosphere, and the gauge pressure chip (61) is hermetically connected to the through hole (64); a cover plate (5) is arranged on the cavity (12), the cover plate (5) is hermetically bonded with the shell (1) through glue, a containing cavity is formed between the cover plate (5) and the cavity (12), a vent nozzle (52) is arranged on the cover plate (5), and a waterproof breathable film (55) and a dustproof cap (51) are arranged on the vent nozzle (52); the shell (1) is also provided with an electrical appliance connector (2), and the electrical appliance connector (2) is connected with the circuit substrate (6); wherein the content of the first and second substances,
the gauge pressure chip and the absolute pressure chip are used for providing two different data to the ECU, and then the ECU determines the change of the ambient air pressure, so that different braking strategies are provided.
2. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the gauge pressure chip (61) is an integrated chip, integrates a pressure element and a processing element and is used for detecting the difference value of the internal pressure and the external pressure of the automobile brake booster; the absolute pressure chip (62) is an integrated chip, integrates a pressure element and a processing element and is used for detecting the current atmospheric absolute pressure value.
3. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the gauge pressure chip (61) and the absolute pressure chip (62) are pressure chips and are used for collecting corresponding pressure values; the circuit substrate (6) is also provided with a processing chip (66) for processing the pressure value.
4. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the gauge pressure chip (61) and the absolute pressure chip (62) are pressure chips and are used for collecting corresponding pressure values; and the circuit substrate (6) is also provided with two processing chips (66) which are respectively used for processing pressure values acquired by the gauge pressure chip (61) and the absolute pressure chip (62).
5. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the gauge pressure chip and the absolute pressure chip are characterized in that a protective frame body (63) is arranged on the circuit substrate (6), the gauge pressure chip (61) and the absolute pressure chip (62) are surrounded by the protective frame body (63), and the gauge pressure chip (61) and the absolute pressure chip (62) are encapsulated in the protective frame body (63) through protective glue.
6. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the cover plate (5) is further provided with a vent hole (53), and the vent hole (53) is sealed through steel balls (54).
7. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the second air nozzle (4) and the shell (1) are of a split structure, and a one-way valve (42) is arranged between the second air nozzle (4) and the shell (1).
8. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 7, wherein: the second air nozzle (4) is of a plastic inverted bamboo joint structure or is provided with an O-shaped ring (41).
9. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the circuit substrate (6) is connected with the electric appliance connector (2) through a bonding aluminum wire (22), a welding lead (23) or a welding contact pin (24).
10. The vacuum degree pressure sensor device for the brake boosting of the automobile as claimed in claim 1, wherein: the circuit substrate (6) is made of a ceramic plate, an aluminum substrate, a PCB or a flexible plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168279.7A CN109696273B (en) | 2019-03-06 | 2019-03-06 | Automobile brake boosting vacuum pressure sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168279.7A CN109696273B (en) | 2019-03-06 | 2019-03-06 | Automobile brake boosting vacuum pressure sensor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109696273A CN109696273A (en) | 2019-04-30 |
| CN109696273B true CN109696273B (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910168279.7A Active CN109696273B (en) | 2019-03-06 | 2019-03-06 | Automobile brake boosting vacuum pressure sensor device |
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| CN (1) | CN109696273B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111256903B (en) * | 2019-12-20 | 2021-05-11 | 浙江零跑科技有限公司 | Plateau vacuum degree sensor for new energy vehicle and testing method |
| CN112061100B (en) * | 2020-08-20 | 2021-11-23 | 东风汽车集团有限公司 | Vacuum booster, brake boosting control system and control method |
| CN112665776B (en) * | 2020-12-25 | 2023-04-18 | 黄山徽熿新能源科技有限公司 | Double-pressure sensor for new energy automobile braking system |
| CN114112183A (en) * | 2021-10-28 | 2022-03-01 | 凯晟动力技术（嘉兴）有限公司 | Vacuum degree pressure sensor for automobile brake power-assisted braking |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7467555B2 (en) * | 2006-07-10 | 2008-12-23 | Rosemount Inc. | Pressure transmitter with multiple reference pressure sensors |
| CN202141557U (en) * | 2011-06-28 | 2012-02-08 | 北京布莱迪仪器仪表有限公司 | Absolute pressure gauge |
| US10067022B2 (en) * | 2016-08-05 | 2018-09-04 | Denso International America, Inc. | Absolute pressure sensor |
| CN106323539B (en) * | 2016-09-23 | 2022-07-22 | 上海立格仪表有限公司 | Sensor base |
| CN107830965A (en) * | 2017-12-06 | 2018-03-23 | 武汉飞恩微电子有限公司 | A kind of automobile canister desorption system pressure sensor |
| CN109186851A (en) * | 2018-09-27 | 2019-01-11 | 江苏德尔森控股有限公司 | A kind of many reference amounts differential pressure pick-up |
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2019
- 2019-03-06 CN CN201910168279.7A patent/CN109696273B/en active Active
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